Download umatr - Atkinson Electronics Inc

UNIVERSAL 2-WIRE CURRENT LOOP TRANSMITTER
UMATR
FEATURES
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Easy mounting to single gang box
Accepts standard or custom sensors
Wide power supply range 12 to 40V DC
Field calibration potentiometers provided
APPLICATIONS
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Transmit Temp. signals long distances
Narrow Temperature ranges
Voltage to 4-20mA loop conversion
Remote Temperature sensing
DESCRIPTION
SPECIFICATIONS
The UMATR is a 2-wire, 4 to 20mA, DC transmitter
designed for converting RTD’s, Solid State Temperature
transducers (AD590's), Thermistors and other low level
signals to a 4 to 20mA current loop signal. This enables
signals to be transmitted long distances. The transmitter is
compact in size and is mounted in 2.19 inch snap track that
can be mounted to single gang electrical box cover, or to a
Vandal resistant wall sensor (VRWM).
SIZE:
2.190" L x 1.85" W x .75" H
MOUNTING:
2.187" RDI snap-track (supplied).
Mounted to single gang cover.
POWER:
+12 to 40V DC regulated
INPUTS:
AD590K (1mA/8C),
RTDs (100 - 10K RTDs)
Thermistors,
Custom voltage signals
OUTPUTS:
4-20mA into 50 to 1500V load
(See resistance to current chart)
ACTION:
Direct or Reverse (Factory set)
ACCURACY:
1% with linear input signal.
ADJUSTMENT:
ZERO & SPAN 6 20%minimum
AMBIENT TEMP:
0 to 508C.
OPERATION
The UMATR can be powered by a 12 to 40V DC supply.
The current drawn from the power supply through a
dropping resistor is proportional to the selected input signal
differential. The UMATR uses a NSC LN10CN IC chip
which provides a voltage reference to power a variety of
sensors. Each UMATR is factory calibrated for the sensor
type and the temperature range specified. ZERO and
SPAN potentiometers are included to permit signal
calibration. Shielded wire is not required on the output 4 to
20mA circuit. However, shielded wire should be used on
the sensor input if the sensor is not mounted in the same
enclosure as the UMATR. The UMATR’s output load
resistor should be selected between 50 and 1500V based
on the power supply (see resistance to current chart).
WIRING CONFIGURATION
RESISTANCE TO CURRENT CHART
ATKINSON ELECTRONICS, INC.
14 West Vine Street
Distributed by:
Murray, UT 84107
Phone (801) 262-6400, 1-800-261-3602
Fax (801) 261-3796, E-MAIL: [email protected]
REV 4/99
UNIVERSAL 2-WIRE CURRENT LOOP TRANSMITTER
ORDERING INFORMATION
UMATR
PHYSICAL CONFIGURATION
UMATR/XXX/X/XXX-XXX
Temperature Range
Mounting Option Code
Input Option Code
INPUT CODE OPTIONS
AD590K
RTD-100*
RTD-1K*
RTD-CUS
VOLTAGE
-
Analog Devices Temperature sensor
RTD - 100V Temperature sensor
RTD - 1000V Temperature sensor
Custom RTD (specify sensor type)
Voltage input (specify voltage range)
* NOTE: Specify the temperature coefficient for all RTD
sensors. (0.00375 or 0.00385 V/V/8C )
MOUNTING OPTIONS
S
P
D
W
V
-
Standard 2.19" Square snap track only
Standard galvanized single gang cover
Standard cover with duct probe housing
Standard cover with 3" well housing
VRWM Stainless steel wall plate
ORDERING CODE EXAMPLES
UMATR / VDC / P / 3.75 to 2.25V DC
UMATR / AD590 / D / 45 to 1458F
UMATR / RTD-100 / W / 80 to 2208F
UMATR / RTD-1K / V / 50 to 1008F
-
Voltage conversion
Discharge air sensor
Well mount sensor
Wall sensor
- 3.75 to 2.25V DC to 4 to 20mA two wire current loop.
- AD590 sensor with 4 to 20mA scaled for 45 to 1458F.
- RTD 100V sensor w/ 4 to 20mA scaled for 80 to 2208F.
- RTD 1000V sensor with 4 to 20mA scaled for 50 to 1008F.
MOUNTING OPTIONS
STANDARD COVER W/ DUCT PROBE
STANDARD COVER W/ 3" WELL
VRWM W/ UMATR
Call for other calibration ranges and versions.
If you have a different application or need, please call 1-800-261-3602 and discuss your needs with our Sales Engineers.
ATKINSON ELECTRONICS, INC.
14 West Vine Street
Distributed by:
Murray, UT 84107
Phone (801) 262-6400, 1-800-261-3602
Fax (801) 261-3796, E-MAIL: [email protected]
REV 4/99
APPLICATIONS AND INSTALLATION INSTRUCTIONS
UMATR
APPLICATION 1 - AD590 TEMPERATURE SENSOR INPUT WITH AN ISOLATED POWER SUPPLY
The UMATR / AD590 / X / X-X is configured for an AD590 temperature sensor and is powered by an IPS2. The UMATR provides
a voltage reference for the AD590 sensor on terminal “A” and a load resistance to circuit ground on terminal “B”. The AD590
is a current limiting device that produces an output current proportional to absolute temperature ( See AD590 Product Sheets).
The UMATR selects the temperature range and converts that signal into a 4 to 20mA output for the controller. ZERO and SPAN
potentiometers are provided for field calibration.
APPLICATION 2 - RTD TEMPERATURE SENSOR WITH AN ISOLATED POWER SUPPLY
The UMATR / RTD / X / X-X is configured for a specific type of RTD temperature sensor and is powered by an IPS2. The UMATR
provides a voltage reference and pull-up resistor for the RTD sensor on terminal “A” and circuit ground on terminal “B”. The RTD
is a resistance element that increases resistance as temperature increases. There are many types of RTDs and the UMATR
must be configured and set-up for the specific type to be used. The UMATR selects the temperature range and converts that
signal into a 4 to 20mA output for the controller.
APPLICATION 3 - UMATR WITH A VOLTAGE INPUT
The UMATR / VDC / X / X-X is configured for a specific voltage input signal and is powered by an IPS2. The UMATR converts
the voltage signal into a 4 to 20mA output for long distance transmission to the controller. ZERO and SPAN potentiometers are
provided for field calibration.
Call for other calibration ranges and versions
If you have a different application or need, please call 1-800-261-3602 and discuss your needs with our Sales Engineers.
ATKINSON ELECTRONICS, INC.
14 West Vine Street
Distributed by:
Murray, UT 84107
Phone (801) 262-6400, 1-800-261-3602
Fax (801) 261-3796, E-MAIL: [email protected]
REV 4/99
FIELD CALIBRATIONS FOR A UMATR WITH AD590 OR RTD SENSOR
UMATR
FIELD CALIBRATIONS FOR AD590 SENSOR
The output signal of the AD590 temperature sensor is 1mA / 8C starting at absolute ZERO. Some calibration values are:
255.4 micro-Amps = -17.8 8C = 0 8F
273.2 micro-Amps =
0 8C = 32 8F
283.2 micro-Amps = 10 8C = 50 8F
298.2 micro-Amps = 25 8C = 77 8F
311.2 micro-Amps = 38 8C = 100.4 8F
348.2 micro-Amps = 50 8C = 122.0 8F
353.2 micro-Amps = 80 8C = 176.0 8F
373.2 micro-Amps = 100 8C = 212.0 8F
The UMATR / AD590 transmitter can be factory configured for temperature differentials as narrow as 50 8F and as wide as 150
8F, and levels as low as a -50 and as high as 150 8F. The ZERO and SPAN potentiometers allow for field calibration of the
specified temperature range.
1.
2.
3.
4.
5.
To calibrate UMATR, first turn off power and then disconnect the AD590 from terminals “A” & “B”. Connect in series a 50KV
potentiometer and a digital multi meter with a micro-Amp current range to terminals “A” & “B”. Connect a second multi
meter in series with the output (-) terminal and the load.
Apply power and adjust the 50KV potentiometer to the desired low end micro-Amp signal, and adjust the ZERO
potentiometer to read 4mA on the output multi meter.
Adjust the 50kV potentiometer to the desired high end micro-Amp signal, and adjust the SPAN potentiometer to read 20mA
on the output multi meter.
Repeat steps 3 and 4 as required to achieve the desired output. There is a slight interaction between the ZERO and SPAN
potentiometers.
Power down the UMATR and disconnect the 50kV potentiometer and reconnect the AD590 Sensor. Apply power and adjust
the ZERO potentiometer for any minor level shift for the desired output current at the measured temperature.
FIELD CALIBRATIONS FOR RTD SENSOR
The output signal of the RTD temperature sensor is based on the sensor element type and it’s resistance rate of change per 8C
(Temperature Coefficient of Resistance TCR-V/V/8C). Some calibration values for 100 and 1000V Platinum RTDs are:
100V Platinum / 1000V Platinum RTD (TCR .00385)
86.485 V
93.025 V
100.0 V
103.902 V
109.734 V
/
/
/
/
/
864.85 V
930.25 V
1000.0 V
1039.02 V
1097.34 V
@ -34.4 8C =
@ -17.8 8C =
@
0 8C =
@
10 8C =
@
25 8C =
-30 8F
0 8F
32 8F
50 8F
77 8F
114.535 V
121.087 V
125.387 V
131.732 V
138.500 V
/
/
/
/
/
1145.35
1210.87
1253.87
1317.32
1385.00
V
V
V
V
V
@
38 8C =
@ 54.4 8C =
@ 65.6 8C =
@ 82.2 8C =
@ 100 8C =
100 8F
130 8F
150 8F
180 8F
212 8F
The UMATR / RTD transmitter can be factory configured for temperature differentials as narrow as 50 8F and as wide as 150
8F, and levels as low as a -50 and as high as 250 8F. The ZERO and SPAN potentiometers allow for field calibration of the
specified temperature range.
1.
2.
3.
4.
5.
6.
7.
8.
To calibrate UMATR, first turn off power and then disconnect the RTD from terminals “A” & “B”. Connect a resistance
decade box to terminals “A” & “B”. The decade box must be able to span the resistance values for the low and high
temperature range you are calibrating for.
Connect a multi meter in series with the output (-) terminal and the load.
Set the decade box to the resistance value of the RTD sensor at the low end temperature of the desired range. Apply
power to the UMATR.
With the decade box set for the low temperature, adjust the ZERO potentiometer to read 4mA on the output multi
meter.
Adjust the decade box to the resistance value at the high end of the desired temperature range, and adjust the SPAN
potentiometer to read 20mA on the output multi meter.
Repeat steps 5 and 6 as required to achieve the desired output. There is a slight interaction between the ZERO and
SPAN potentiometers.
Power down the UMATR and disconnect the decade box and reconnect the RTD Sensor.
Apply power and adjust the ZERO potentiometer for any minor level shift for the desired output current at the measured
temperature.
Call for other calibration ranges and versions
If you have a different application or need, please call 1-800-261-3602 and discuss your needs with our Sales Engineers.
ATKINSON ELECTRONICS, INC.
14 West Vine Street
Distributed by:
Murray, UT 84107
Phone (801) 262-6400, 1-800-261-3602
Fax (801) 261-3796, E-MAIL: [email protected]
REV 4/99