Magnetrol Kotron 805 Istruzioni per l'uso

Categoria
Misurazione, test
Tipo
Istruzioni per l'uso
RF
Capacitance
Level
Measurement
7xxx
6xxx
5xxx
4xxx
3xxx
2xxx
1xxx
Installation and Operating Manual
Kotron
®
Model 805 Smart RF
Level Transmitter
Read this Manual Before Installing
This manual provides information on the Kotron
®
Model
805 Smart RF Transmitter. It is important that all
instructions are read carefully and followed in sequence.
The QuickStart Installation instructions are a brief guide
to the sequence of steps for experienced technicians to
follow when installing the equipment. Detailed instruc-
tions are included in the Complete Installation section of
this manual.
Conventions Used in this Manual
Certain conventions are used in this manual to convey
specific types of information. General technical material,
support data, and safety information are presented in
narrative form. The following styles are used for notes,
cautions, and warnings.
Notes
Notes contain information that augments or clarifies
an operating step. Notes do not normally contain
actions. They follow the procedural steps to which
they refer.
Cautions
Cautions alert the technician to special conditions that
could injure personnel, damage equipment, or reduce
a component’s mechanical integrity. Cautions are also
used to alert the technician to unsafe practices or the
need for special protective equipment or specific mate-
rials. In this manual, a caution box indicates a poten-
tially hazardous situation which, if not avoided, may
result in minor or moderate injury.
Warnings
Warnings identify potentially dangerous situations or
serious hazards. In this manual, a warning indicates an
imminently hazardous situation which, if not avoided,
could result in serious injury or death.
Safety Messages
The KOTRON Model 805 system may be properly
installed in Category II, Pollution Degree 2 installations.
Follow all standard industry procedures for servicing elec-
trical and computer equipment when working with or
around high voltage. Always shut off the power supply
before touching any components. Although high voltage is
not present in this system, it may be present in other sys-
tems.
Electrical components are sensitive to electrostatic dis-
charge. To prevent equipment damage, observe safety
procedures when working with electrostatic sensitive
components.
Low Voltage Directive
For use in Category II installations. If equipment is used
in a manner not specified by manufacturer, protection
provided by equipment may be impaired.
WARNING! Explosion hazard. Do not connect or dis-
connect equipment unless power has been switched off or
the area is known to be non-hazardous.
Notice of Trademark, Copyright, and Limitations
KOTRON is a registered trademark of Magnetrol
International, Incorporated. KOTRON Model 805 Smart
RF Transmitter is a tradename of Magnetrol International,
Incorporated.
Copyright © 2019 Magnetrol International,
Incorporated. All rights reserved.
Magnetrol
®
reserves the right to make changes to the
product described in this manual at any time without
notice. MAGNETROL makes no warranty with respect
to the accuracy of the information in this manual.
Warranty
All MAGNETROL electronic level and flow controls
are warranted free of defects in materials or workmanship
for eighteen months from the date of original factory
shipment.
If returned within the warranty period; and, upon factory
inspection of the control, the cause of the claim is deter-
mined to be covered under the warranty; then,
MAGNETROL will repair or replace the control at no cost
to the purchaser (or owner) other than transportation.
MAGNETROL shall not be liable for misapplication,
labor claims, direct or consequential damage or expense
arising from the installation or use of equipment.
There are no other warranties expressed or implied,
except special written warranties covering some
MAGNETROL products.
Quality Assurance
The quality assurance system in place at MAGNETROL
guarantees the highest level of quality throughout the
company. MAGNETROL is committed to providing
full customer satisfaction both in quality products and
quality service.
The MAGNETROL quality assurance system is
registered to ISO 9001 affirming its commitment to
known international quality standards providing the
strongest assurance of product/service quality available.
Table of Contents
1.0 QuickStart Installation
1.1 Getting Started .......................................................4
1.1.1 Equipment and Tools...................................4
1.1.2 Configuration Information ..........................4
1.2 QuickStart Mounting .............................................5
1.2.1 Probe ...........................................................5
1.2.2 Transmitter ..................................................5
1.3 QuickStart Wiring..................................................6
1.4 QuickStart Configuration and Calibration
(LCD version) ........................................................6
2.0 Complete Installation
2.1 Unpacking ..............................................................8
2.2 Electrostatic Discharge (ESD)Handling Procedure...8
2.3 Before You Begin ....................................................9
2.3.1 Site Preparation............................................9
2.3.2 Equipment and Tools...................................9
2.3.3 Operational Considerations .........................9
2.4 Mounting .............................................................10
2.4.1 Installing a Rigid Probe..............................11
2.4.2 Installing the Transmitter ...........................11
2.5 Wiring ..................................................................12
2.5.1 General Purpose or Non-incendive
(CI I, Div 2) ..............................................12
2.5.2 Intrinsically Safe .........................................12
2.6 Configuring & Calibrating the Transmitter
(LCD Version)......................................................13
2.6.1 Operating Parameters .................................13
2.6.2 LCD Transmitter Display and Keypad .......13
2.6.3 Password Protection (Default = 0) .............14
2.6.4 LCD Menu: Step-By-Step Procedure .........14
2.7 Configuration Using HART
®
...............................16
2.7.1 Connections...............................................16
2.7.2 HART Display Menu ................................16
2.7.3 HART Device Description (DD)...............16
2.7.4 HART Menu .............................................17
3.0 Reference Information
3.1 Description...........................................................18
3.2 Theory of Operation ............................................18
3.3 Troubleshooting....................................................19
3.3.1 Troubleshooting System Problems (LCD)..20
3.3.2 Error Messages (LCD) ...............................20
3.3.3 Troubleshooting Flowchart (LCD).............21
3.4 Agency Approvals .................................................24
3.4.1 Agency Specifications – Intrinsically
Safe Installation .........................................25
3.5 Parts......................................................................26
3.5.1 Replacement Parts......................................26
3.6 Specifications ........................................................27
3.6.1 Functional..................................................28
3.6.2 Performance...............................................28
3.6.3 Physical......................................................29
3.7 Model Number.....................................................29
Configuration and Calibration Data Sheet........................30
KOTRON
®
Model 805 Smart RF
Level Transmitter
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
4
1.0 QuickStart Installation
The QuickStart Installation procedures provide the key
steps for mounting, wiring, and configuring the
KOTRON Model 805 Level Transmitter. These proce-
dures are intended for experienced installers of electronic
level measurement instruments. See Complete Installation,
Section 2.0, for detailed installation instructions.
1.1 Getting Started
Before beginning the QuickStart Installation procedures,
have the correct equipment, tools, and information
available.
1.1.1 Equipment and Tools
•1
1
8" open-end wrench or adjustable wrench to fit the probe
process connection size and type.
•1
1
4" open-end wrench or adjustable wrench to fit adaptor
on transmitter housing.
Flat-blade screwdriver
Digital multimeter or digital volt/ammeter
24 VDC power supply, 23 mA
1.1.2 Configuration Information
Some key information is needed to configure the Model
805 transmitter. Complete the following operating
parameters table before beginning configuration.
Display Question Answer
Units What units of measurement will be
used? (inches or centimeters) _____________
Set What is the 0% reference point for the
4.0 mA 4.0 mA value? _____________
Set What is the 100% reference point for
20.0 mA the 20.0 mA value? _____________
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
5
1.2 QuickStart Mounting
NOTE: Confirm the configuration style and process connection size
and type of the KOTRON Model 805 transmitter. Ensure it
m
atches the requirements of the installation before continuing
with the QuickStart installation.
Confirm the model and serial numbers.
1.2.1 Probe
Carefully place the probe into the vessel. Align the probe
process connection with the threaded or flanged mounting
on the vessel.
Tighten the probe using the flats of the probe process con-
nection or flange bolts.
1.2.2 Transmitter
Loosen screw on top of the probe and attach white wire to
probe, making sure that spade lug is at a 90° upward
angle. Tighten probe screw securely. (See figure below)
Place the transmitter on the probe.
Tighten the connection by using the flats on the adaptor.
90° Bend
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
6
1.3 QuickStart Wiring
WARNING! Explosion hazard. Do not connect or disconnect equip-
ment unless power has been switched off or the area is
k
nown to be safe.
NOTE: Make sure the electrical wiring to the KOTRON Model 805
transmitter is complete and in compliance with all regulations
and codes.
1. Remove the cover of the wiring compartment of the
transmitter.
2. Attach a conduit fitting and mount the conduit plug in
the spare opening. Pull the power supply wire (twisted,
shielded pair of at least 22 AWG) through the conduit
fitting.
3. Connect shield to an earth ground at power supply and
leave floating at the transmitter.
4. Connect an earth ground to the nearest green ground
screw. (Not shown in illustration.)
5. Connect the positive supply wire to the (+) terminal and
the negative supply wire to the (-) terminal.
6. Replace the cover and tighten.
1.4 QuickStart Configuration and Calibration
(LCD version)
NOTE: The KOTRON Model 805 transmitter is equipped with a 2-line
by 8-character LCD.
1. Power-up the transmitter.
The display changes every 5 seconds to show one of the
three measured values: Level, %Output, and Loop current.
2. Remove the cover of the electronic compartment.
3. Use the Up ( ) or Down ( ) Arrow keys to move from
one step of the configuration program to the next step.
4. Press the Enter Arrow ( ) key. The last character in the
first line of the display changes to an exclamation point (!).
For example:
5. Use the Up ( ) or Down ( ) keys to increase or decrease
the value in the display or to scroll through the choices.
R
ed (+)
Black (-)
(+)
(
-)
Units!
xxx
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
7
Units
lu
Set 4mA
xxx.x
Set 20mA
xxx.x
Scroll down to the Units display. Press the Enter
Arrow ( ) key. Select the Units of measurement
for the level readout (cm or inches). Press the
Enter Arrow ( ) key.
Scroll down to the Lo Cal display. Press the Enter
Arrow ( ) key. Enter the current level (in or cm) of
media on the probe by using the Up and Down
Arrow ( ) keys. Holding either key down causes
the values to change first by 1s and then by 10s.
Single depression of either key causes the values to
change by 0.1s. Once the desired value is displayed,
press the Enter Arrow ( ) key.
Move the media in the tank to a higher level. The
greater the amount of level change, the more accu-
rate the level measurement. Scroll down to the Hi Cal
display. Press the Enter Arrow ( ) key. Enter the
new current media level in the same manner as
above. Press the Enter Arrow ( ) key.
NOTE: If calibrating the 805 for interface measurement,
enter the level of the interface rather than the
upper level.
Scroll down to the Set 4 mA display. Press the
Enter Arrow ( ) key. Enter the minimum level
value for the desired 4 mA point. Press the
Enter Arrow ( ) key.
Scroll down to the Set 20 mA display. Press the
Enter Arrow ( ) key. Enter the maximum level
value for the desired 20 mA point. Press the
Enter Arrow ( ) key.
Hi Cal
20mA Level
(100%-point)
4mA Level
(0%-point)
In or Cm
1
5
4
3
Lo Cal
2
6. Press the Enter Arrow ( ) key to accept a value and
move to the next step of the configuration program.
7. The default password is 0. (No password is required.)
Lo Cal
xxx.x lu
Hi Cal
xxx.x lu
The transmitter is now calibrated for this probe in this
medium in this tank (or vessel) and it provides a 4–20 mA
output over the desired range. Damping factor and Fault
output will automatically default to factory set values of
1 second and 22 mA. Changing these values and those for
other parameters are covered in detail in the next section,
Complete Installation.
The following parameter entries are the minimum
required for initial setup and calibration. The default
password is 0.
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
8
2
.
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2.2 E
lectrostatic Discharge (E
SD)
Han
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ure
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foil. Do not place boards on foam packing materials.
Use a grounding wrist strap when installing and removing
circuit boards. A grounded workstation is recommended.
Handle circuit boards only by the edges. Do not touch
components or connector pins.
Make sure that all electrical connections are completely
made and none are partial or floating. Ground all
equipment to a good, earth ground.
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
9
2.3 Before You Begin
2.3.1 Site Preparation
Each KOTRON Model 805 transmitter is built to match
the specific physical specifications of the required installa-
tion. Make sure the probe connection is correct for the
threaded or flanged mounting on the vessel or tank where
the transmitter will be placed. See Mounting, Section 2.4.
Make sure that the wiring between the power supply and
Model 805 transmitter is complete and correct for the type
of installation. See Specifications, Section 3.6.
When installing the Model 805 transmitter in a general
purpose or hazardous area, all local, state, and federal
regulations and guidelines must be observed. See Wiring,
Section 2.5.
2.3.2 Equipment and Tools
No special equipment or tools are required to install
the Model 805 transmitter. The following items are
recommended:
•1
1
8" Open-end wrench or adjustable wrench to fit the
probe process connection size and type
Flat-blade screwdriver
Digital multimeter or digital volt/ammeter
24 VDC power supply, 23 mA
2.3.3 Operational Considerations
The Model 805 transmitter should be located for easy
access for service, configuration, and monitoring. There
should be sufficient headroom to allow the probe to be
inserted into the tank. Special precautions should be made
to prevent exposure to corrosive atmosphere, excessive
vibration, shock, or physical damage.
The transmitter electronics should not be exposed to
ambient temperatures above +175 °F (+80 °C) or below
-40 °F (-40 °C). The proper operating temperature range
for the display is -10 to +160 °F (-20 to +70 °C).
The temperature limits for the probe depend on the
style and part number of the specific probe used.
See Brochure 50-125, KOTRON
®
RF Sensing Probes.
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
10
2.4 Mounting
The Model 805 transmitter can be mounted to a tank
using a variety of process connections. Generally, either a
threaded or flanged connection is used. For information
about the sizes and types of connections available, see
Brochure 50-125, KOTRON
®
RF Sensing Probes.
Make sure all mounting connections are properly in place
on the tank before installing the probe. Make sure the
KOTRON probe is correct for the intended installation.
It is common practice to use the metal tank wall as the ref-
erence electrode. In such cases, it is required that the probe
housing makes a good electrical connection to the tank
wall. If there is any doubt about this connection or to the
use of PTFE thread tape gaskets, paint, rust, or any other
reason, a separate strap should be installed between the
probe housing and the tank.
Caution: This unit contains CMOS electronics which may be dam-
aged by static electricity. Do not touch any semi-conduc-
tor devices unless you are properly grounded.
Metal Walled Tanks
On water-based liquids, there should be no problem with
sensitivity or linearity. With non-conductive, low dielectric
media, sensitivity can be enhanced by locating the probe
close to and parallel with the tank wall. If this is not prac-
tical, a concentric ground tube surrounding the probe
(sometimes called a stilling well), may be the solution.
NOTE: These comments are also true for glass-lined metal
walled tanks.
Tanks/Silos with Non-Conductive Materials of
Construction
With plastic, concrete, wood, or any other non-conductive
walled vessels, the reference electrode mentioned above
needs clarification. Most commonly, this electrode will be
in the form of a concentric ground tube (i.e. stilling well).
In questionable circumstances, consult the factory. In all
cases, a good electrical connection must be made between
the ground surface and the probe housing.
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
11
Transmitter/Probe Assembly
Transmitters with probes up to and including 12 inches
(305 mm) in length are shipped pre-assembled. All other
transmitters are shipped unassembled to avoid damage
during transit. These transmitters must be assembled prior
to mounting. Choose your particular configuration from
the following sections and follow the instructions carefully.
2.4.1 Installing a Rigid Probe
Before installing, ensure the:
Probe has adequate headroom for installation and has
unobstructed entry to the bottom of the vessel.
Process temperature, pressure, dielectric, and viscosity are
within the probe specifications for the installation. See
Specifications, Section 3.6.
To install a probe:
Make sure the process connection is at least
3
4" NPT or a
flanged mounting.
Carefully place the probe into the vessel. Align the gasket
on flanged installations.
Align the probe process connection with the threaded or
flanged mounting on the vessel.
Tighten the threaded probe process connection using
only the flats on the probe.
Caution: Packing glands used on all MAGNETROL rigid probe
assemblies have been sealed at the factory under con-
trolled conditions. Care must be exercised when installing
probe assemblies to avoid breaking the pressure tight
gland seal, which destroys the seal.
2.4.2 Installing the Transmitter
Loosen screw on top of the probe and attach white wire to
probe, making sure that spade lug is at a 90° upward
angle. Tighten probe screw securely.
Slide white wire through the adaptor while placing the
transmitter on the probe. Tighten the connection by using
the flats on the adaptor.
90° Bend
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
12
2.5 Wiring
C
aution: The KOTRON Model 805 transmitter operates at voltages
of 11–36 VDC (GP) and 11–28.6 VDC (IS). Higher voltages
will damage the transmitter.
All wiring between the power supply and the Model 805
transmitter should be made using 18–22 AWG shielded
twisted pair instrument cable. Within the transmitter
enclosure, connections are made to the terminal strip and
the ground connections. The directions for wiring the
Model 805 transmitter depend on the application:
General Purpose or Non-incendive (Cl I, Div. 2)
Intrinsically Safe
WARNING! Explosion hazard. Do not disconnect equipment
unless power has been switched off or the area is
known to be safe.
2.5.1 General Purpose or Non-incendive (Cl I, Div. 2)
A general purpose installation does not have flammable
media present. Areas rated non-incendive (Cl I, Div. 2)
have flammable media present only under abnormal
conditions. No special electrical connections are required.
If flammable media is contained in the vessel, the trans-
mitter must be installed per Cl I, Div. 1 standards of
area classification.
To install General Purpose or Non-incendive wiring:
1. Remove the cover to the wiring compartment of the trans-
mitter. Install the conduit plug in the unused opening.
2. Install a conduit fitting and pull the supply wires.
3. Connect shield to an earth ground at power supply and
leave floating at the transmitter.
4. Connect an earth ground wire to the nearest green ground
screw. (Not shown in illustration.)
5. Connect the positive supply wire to the (+) terminal and
the negative supply wire to the (-) terminal.
6. Replace the cover to the wiring compartment of the
transmitter.
2.5.2 Intrinsically Safe
An intrinsically safe (IS) installation potentially has flam-
mable media present. An approved IS barrier must be
installed in the nonhazardous (safe) area. See Agency
Drawing – Intrinsically Safe Installation, Section 3.4.1.
Red (+)
B
lack (-)
(
+)
(-)
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
13
To install Intrinsically Safe wiring:
1. Make sure the IS barrier is properly installed in the safe
area (refer to local plant or facility procedures). Complete
the wiring from the barrier to the Model 805 transmitter.
See Agency Specifications – Intrinsically Safe Installations,
Section 3.4.1.
2. Remove the cover to the wiring compartment of the trans-
mitter. Install the conduit plug in the unused opening.
3. Install a conduit fitting and pull the supply wires.
4. Connect shield to an earth ground at power supply and
leave floating at the transmitter.
5. Connect an earth ground wire to the nearest green ground
screw. (Not shown in illustration.)
6. Connect the positive supply wire to the (+) terminal and
the negative supply wire to the (-) terminal.
7. Replace the cover to the wiring compartment of the
transmitter.
2.6 Configuring and Calibrating the
Transmitter (LCD version)
Before configuring the Model 805 transmitter, collect the
operating parameters information. Then, power-up the
transmitter. Information on configuring the transmitter
using a HART
®
communicator is given in Configuration
Using HART, Section 2.7.
2.6.1 Operating Parameters
Some key information is needed to calibrate the Model
805 transmitter. Complete the configuration information
table. See Configuration Information, Section 1.1.2.
2.6.2 LCD Transmitter Display and Keypad
The Model 805 LCD transmitter has a liquid-crystal dis-
play (LCD) capable of showing two lines of 8 characters
each. Transmitter measurements and configuration menu
screens are shown on the LCD.
The transmitter default display is the measurement screen.
It cycles every 5 seconds to display LEVEL, %OUTPUT,
and LOOP information. The transmitter defaults to this
display after 5 minutes if no keystrokes are sensed.
The keypad has three arrows used to scroll through the
displays and to calibrate the transmitter the Up ( ) or
Down ( ) Arrow keys and the Enter ( ) key.
Either the Lo Cal or Hi Cal point levels can be entered
first. It is not necessary to do the Lo Cal first. In addition,
the 4 mA and 20 mA setpoints can be entered for either
DIRECT action or REVERSE action as desired.
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
14
Arrows Function in Function in
D
isplay Mode Configuration Mode
Up and Down Moves forward and backward Increases or decreases the
in the configuration program value displayed or moves to
from one display to another. another choice.


Enter Enters the configuration mode Accepts a value and moves
(noted by an exclamation point to the next step of the
as the last character in the top configuration program.
display line).
2.6.3 Password Protection (Default = 0)
The Model 805 transmitter includes optional password
protection to restrict access to certain portions of the
menu structure that affect the operation of the system.
The password can be changed to any numerical value up
to 255. The password is required whenever configuration
values are changed.
The default password installed in the transmitter at the
factory is 0. The last step in the configuration menu pro-
vides the option to enter a new password. With 0 as the
password, the transmitter is no longer password protected
and any value in the menu can be altered without entering
a confirming password.
NOTE: If the password is not known, the menu item New Password
displays an encrypted value representing the present pass-
word. Call the factory with this encrypted value to determine
the present password.
2.6.4 LCD Menu: Step-By-Step Procedure
The following table provides a complete explanation of the
software menus displayed by the Model 805 transmitter.
Use this table as a step-by-step guide to configure the
transmitter.
The first column presents the menus shown on the trans-
mitter display. The displays are in the order they would
appear if the arrow keys were used to scroll through the
menu. The numbers are not shown on the display. They
are provided as a reference.
The second column provides the actions to take when con-
figuring the transmitter. Additional information or an
explanation of an action is given in the third column.
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
15
Display Action Comment
1
2
3
4
5
6
7
8
9
10
11
12
13
*Level*
*
%Output*
*Loop*
Transmitter Display Transmitter default display.  and 
values cycle every 5 seconds (two seconds each value).
Transmitter Display Level measurement in cm or in.
Transmitter Display Level as percentage of loop current (20 mA) span.
Transmitter Display Loop current output.
Select units for level lu = cm or in.
measurement display.
Enter level value for the Use Up and Down keys to set reading to present level of
lower calibration point. medium in vessel. See .
Transmitter Display Measured capacitance at low calibration point.
Enter level value for the Move the level in the tank. Use Up and Down keys to set
higher calibration point. reading to present level of medium in vessel. See .
Transmitter Display Measured capacitance at high calibration point.
Enter the level value for the Use Up and Down keys to set reading to level corresponding
4 mA point. to 4 mA loop current.
Enter the level value for the Use Up and Down keys to set reading to level corresponding
20 mA point. to 20 mA loop current.
Enter damping factor. Choose the damping factor (1–45 sec) for smoothing the
level/output/loop displays.
Enter the desired loop current Select 22 mA, 3.6 mA or Hold. (3.6 mA is not valid if unit
in presence of a fault. includes digital display and HART)
Enter HART poll address. Select a HART poll address (0–15). Enter 0 for a single
transmitter installation.
Trim loop current to 4.00 mA. With a meter in the loop, use Up and Down keys to adjust
current to 4.00 mA.
Trim loop current to 20.00 mA. With a meter in the loop, use Up and Down keys to adjust
current to 20.00 mA.
Enter test value of loop current Use Up and Down keys to set loop current to a desired value
(3.5–22.0 mA) for testing.
Transmitter Display Measured capacitance at present level of medium in vessel.
Transmitter Display Internal timing count with known capacitance in circuit
(factory diagnostic).
Transmitter Display Internal timing count with probe disconnected (factory
diagnostic).
Transmitter Display Internal timing count at present level of medium in vessel
(factory diagnostic).
Select Yes to reinitialize Resets all configuration parameters to factory default
all values values.
Transmitter Display Shows version number of firmware.
Enter new password Use Up and Down keys to select desired value (0–255).
Level
xx.x lu
%Output
xx.x%
Loop
xx.xx mA
Units
lu
Lo Cal
xxx.x lu
Lo Cap
xxxx pF
Hi Cal
xxx.x lu
Hi Cap
xxxx pF
Set 4mA
xxx.x lu
Set 20mA
xxx.x lu
Damping
xx sec
Fault
Choice
Poll Adr
xx
Trim 4
xxx
Trim 20
xxxx
14
15
16
17
18
Loop Tst
xx.x mA
Prb Rdg
xxxx pF
19
20
Osc Tst
xxxx tk
Opn Prb
xxxx tk
21
22
# Ticks
xxxxx tk
Reinit
xx
23
24
Ver n.nAa
New Pass
xxx
RUN  MODE
CALIBRATION/CONFIGURATION
DIAGNOSTICS
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
16
2.7 Configuring and Calibrating the
Transmitter Using HART
A HART (Highway Addressable Remote Transducer)
remote unit can be used to provide a communication link
to the Model 805 transmitter. When connected to the
control loop, the same system measurement readings
shown on the transmitter are shown on the communicator.
In addition, the communicator can be used to configure
the transmitter.
The HART communicator may need to be updated to
include the Model 805 software (Device Descriptors).
Contact your local HART Service Center for additional
information.
2.7.1 Connections
A HART communicator can be operated from a remote
location by connecting to a remote junction or by con-
necting directly to the terminal block in the electronics
housing of the Model 805 transmitter.
HART uses the Bell 202 frequency shift key technique of
high-frequency digital signals. It operates on the 4–20 mA
loop and requires 250 Ω of minimum load resistance.
A typical connection between a communicator and the
Model 805 transmitter is illustrated.
2.7.2 HART Display Menu
When connected, the top line of each online menu
displays the model (Model 805) and its tag number or
address. For detailed operating information, refer to the
instruction manual provided with the HART communicator.
The Model 805 transmitter online menu tree is shown in
the following illustration. Open the menu by pressing the
alphanumeric key 1, Device Setup, to display the second-
level menu.
2.7.3 HART Device Description (DD)
Device Version 1 (Dev v1), Device Description 2
(DD v2) was registered with HART Communication
Foundation in May, 1999 and is available on the
CD-ROM 1999–2 issued in July, 1999.
+
+
-
-
Junction
R
L
> 250 1
Control
Room
Display
Power
Supply
Current
Meter
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
17
1 Calibration
2
Basic Setup
3 Advanced Setup/
Configuration
4 Diagnostics
5 Review
1 Units
2 Empty Calibration
3 Full Calibration
4 4 mA Set Point
5 20 mA Set Point
6 Damping
7 Fault State
8 Date/Time/Initials
1 Device Setup
2 Level
3 % Level Output
4 Loop
1 Tag
2 Descriptor
3 Date
4 Message
5 Final Asmbly Num
6 Poll Address
7 New Password
1 Loop Test
2 Error Codes
3 Probe Reading
4 Cap at Empty Cal
5 Cap at Full Cal
1 3.6 mA
2 4 mA
3 20 mA
4 22 mA
5 Other
1 Model
2 Manufacturer
3 Dev id
4 Tag
5 Descriptor
6 Date
7 Message
8 Units
9 Cap at Empty Cal
10 Cap at Full Cal
11 4 mA Set Point
12 20 mA Set Point
13 Damping
14 Fault State
15 Date/Time/Initials
16 FinalAsmbly Num
17 Universal Rev
18 Fld Dev Rev
19 Software Rev
20 Poll Address
21 Num Req Preams
22 Firmware Version
1 Adjust 4 mA Trim
2 Adjust 20mA Trim
3 4mA Trim Value
4 20mA Trim Value
5 Enter Password
6 Set Magnetrol S/N
7 Set Dev ID Number
2.7.4 HART Menu
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
18
3.0 Reference Information
This section presents an overview of the operation of the
KOTRON Model 805 transmitter, information on trou-
bleshooting common problems, listings of agency
approvals, lists of replacement and recommended spare
parts, and detailed physical, functional, and performance
specifications.
3.1 Description
Model 805 is a two wire, 24 VDC, level transmitter based
on the concept of RF Capacitance.
The Model 805 electronics are housed in an ergonomic
housing comprised of two tandem compartments angled at
45 degrees for ease of wiring and calibration. These two
compartments connect via an explosion-proof and water-
tight feed-through.
3.2 Theory of Operation
RF capacitance electronic level measurement utilizes the
same fundamentals as any electronic capacitor (Figure A).
A capacitor is formed when an AC signal is applied across
two conductive plates separated by an insulating medium,
or dielectric. The value of a capacitor is determined by the:
1. Area of the conductive plates (A);
2. Distance between the plates (D), and;
3. Dielectric of the insulating medium between the
plates (E). Refer to Figure A.
Capacitance = EA/D
(The AC frequency is fixed as part of the design.)
Current Meter
+
Test
C
urrent Meter
Power Supply
24 Vdc
+
Conductive
Plate
Conductive
Plate
Insulating
Medium
AC
Figure A
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
19
Capacitance is measured in Farads. The value we utilize in
industrial measurement is an extremely small unit called a
pico Farad (pF). A pico Farad is one trillionth of a Farad
(10
-12
).
Capacitance value increases as the dielectric increases,
the plate size increases, or the distance between the
plates decreases.
In industrial applications (Figure B), the probe is one plate
of the capacitor, the tank wall is the other plate (ground
reference). The insulating material that separates them is
the dielectric. A tank that is empty is actually filled with
air that has a dielectric of 1, the baseline of the dielectric
scale. All materials have a dielectric higher than air, e.g.
oil = 2.5, alcohol = 18, tap water = 80, etc. As a tank is
filled with media, the air (dielectric = 1) is being displaced
by the media having a higher dielectric; consequently, the
amount of capacitance being generated between the probe
and the tank wall increases.
3.3 Troubleshooting
The Model 805 transmitter is designed and built for
trouble-free operation over a wide range of operating con-
ditions. Common transmitter problems are discussed in
terms of their symptoms and recommended corrective
actions. In addition, information on how to handle mater-
ial build-up on the probe is provided in this section.
WARNING! Explosion hazard. Do not connect or disconnect
equipment unless power has been switched off or the
area is known to be safe.
B
are
m
etal
p
robe
Metal
tank wall
(ground
r
eference)
A
ir
Non-conductive
(
insulating)
medium
Figure B
50-660 Kotron
®
Model 805 Smart RF Level Transmitter
20
OUTPUT signal always HART Poll address Change HART Poll Address to 0.
at 4 mA. is not 0. See Secion 2.6.4, Step 14.
LEVEL, % OUTPUT and LOOP values Basic configuration data is Check values and recalibrate if
are all inaccurate. questionable. necessary (either or both points).
LEVEL readings are repeatable but Configuration data does not Recalibrate if necessary.
consistently high or low from actual accurately match tank height.
by a fixed amount.
L
EVEL, % OUTPUT and LOOP Turbulence. Increase the Damping factor until the
values fluctuate. readings stabilize.
LOOP value jittery, usually in tenths Factory settings corrupted. Check # of Ticks. If the number is
or hundredths digit. also jittery, consult the Factory.
HART device only: handheld will only Most current Device Descriptors Contact local HART service center for the
read Universal Commands. (DDs) are not installed in handheld latest DDs.
HART device only; reads Product Early HART software does not Contact manufacturer of your HART
information (e.g., Mfgs. ID, Device #, account for Mfgs. ID #’s greater master software for upgrade. This is a
Serial #, etc.) but will not read any than 63. The Magnetrol ID is 86. shortcoming of early HART master
process variables. software.
Symptom Problem Solution
3.3.1 Troubleshooting System Problems
805 FAULT Open probe. Check probe wiring and electronics
(Open) module connector.
805 FAULT Shorted probe. Check probe wiring and integrity of
(Shorted) insulated probe in conductive liquid.
OSC FAIL Malfunctioning analog board and/or Check connection between boards and
(HART error code = 0x40) 32 pin connector. replace electronic module if necessary.
ABV RNG Above range. Measured capacitance > 12,000 pF.
Contact factory.
CORRUPT PARAMTRS Configuration parameters may Check all Configuration parameters and.
(HART error code = 0x10) have been lost. recalibrate if necessary.
SFWR ERROR Software error. Bad internal state, unexpected condition.
Contact factory.
LEVEL Unit is not calibrated. Make sure that both Lo Cal and Hi Cal
(Uncal) points have been entered.
3.3.2 Error Messages
Symptom Problem Solution
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Magnetrol Kotron 805 Istruzioni per l'uso

Categoria
Misurazione, test
Tipo
Istruzioni per l'uso