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5

3.0

CALIBRATING THE TRANSMITTER

Calibration Setup:

1.

Insert the reference RTD.

2.

Connect RTD simulator.

3.

Connect DMM monitor and power supply. 

Figure 3-1.  Calibration Setup (Resistance Source) 

To calibrate the transmitter, follow these steps (refer to Figure 3-1):

1.

Locate the model number in Table 3-1 or 3-2 and set the resistance source to
the LO-IN value.

2.

Adjust the Zero potentiometer until the milliammeter reads 4.00 mA.

3.

Set the resistance source to the HI-IN value (in your appropriate table) and read
the output current on the milliammeter. 

4.

Adjust the Span potentiometer to obtain the 20 mA on the milliammeter.

5.

Set the resistance source to LO-IN resistance. If the output current is not 4.00
mA, repeat steps 2 through 7.

6.

When calibration is complete, remove the transmitter from the setup.

1

2

3

4

5

ZS

RESISTANCE

SOURCE

DC SUPPLY

24 VDC

DMM

(4–20 mA)
MONITOR

(–)

(+)

(–)

(–)

(+)

(+)

COPPER

WIRE

250 Ohms

INPUT
RTD
WIRE

SPAN

ZERO

Summary of Contents for TX92A

Page 1: ...e mail info omega com For latest product manuals www omegamanual info TX92A Miniature Temperature Transmitters Shop online at omega com User sGuide TM...

Page 2: ...pecifications without notice omega com info omega com Servicing North America U S A Omega Engineering Inc Headquarters Toll Free 1 800 826 6342 USA Canada only Customer Service 1 800 622 2378 USA Cana...

Page 3: ...RATING THE TRANSMITTER 5 4 0 SPECIFICATIONS 7 LIST OF FIGURES AND TABLES Figure 2 1 Power Input Setup 4 Figure 2 2 Pin Assignment 4 Figure 3 1 Calibration Setup Resistance Source 5 Figure 3 2 Calibrat...

Page 4: ...ii...

Page 5: ...an issue always use shielded cables Never run signal and power wires in the same conduit Use signal wire connections with twisted pair cables Install Ferrite Bead s on signal wires close to the instru...

Page 6: ...t temperature within 25 for Fahrenheit and 10 for Celsius of nominal span refer to Section 3 0 Calibrating the Transmitter for more details Models TX92A L are transmitters with the 4 20mA output linea...

Page 7: ...ult factory To order additional transmitters specify TX92A followed by the model number For example TX92A 2 RTD Transmitter with a temperature range of 0 to 200 F or TX92A 2 L RTD Transmitter with the...

Page 8: ...ower on switch so it will be in operation as soon as you apply power Figure 2 1 Power Input Setup PS and PS screws accept 2mm 13 gauge or lighter wire Input range is 8 50 Vdc Table 2 1 Screw Terminal...

Page 9: ...Adjust the Zero potentiometer until the milliammeter reads 4 00 mA 3 Set the resistance source to the HI IN value in your appropriate table and read the output current on the milliammeter 4 Adjust the...

Page 10: ...hms INPUT WIRE SPAN ZERO RTD CALIBRATOR DC SUPPLY 24 VDC V Va al lu ue e M Mo od de el l N Nu um mb be er r R Ra an ng ge e T TX X9 92 2A A 7 7 8 8 9 9 1 10 0 0 to 100 C 0 to 150 C 0 to 250 C 0 to 400...

Page 11: ...tage 8V 20 mA A AC CC CU UR RA AC CY Y Hysteresis and repeatability Within 0 1 of FS Linearity with respect to input 0 1 of FS For L models linearity with respect to temperature 0 2 of FS Power supply...

Page 12: ...IONS Continued 1 650 650 1 650 1 650 1 750 44 45 DIA 750 19 05 1 150 29 21 2 3 4 5 1 2 3 4 5 Z S IN IN PS M PS 5 4 V V 1 2 REGULATOR CURRENT CONTROL AMP Figure 4 1 Case Dimensions Figure 4 2 Transmitt...

Page 13: ...NOTES 9...

Page 14: ...NOTES 10...

Page 15: ...GA if the unit is found to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limited to...

Page 16: ...s M U Turbine Paddlewheel Systems M U Totalizers Batch Controllers pH CONDUCTIVITY M U pH Electrodes Testers Accessories M U Benchtop Laboratory Meters M U Controllers Calibrators Simulators Pumps M U...

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