Omega Speaker Systems RH/Temperature Transmitter HX93A - Manual (Page 14)

10
15. Calibration Procedure for HX93AV (all Styles)
Temperature Adjustment
Recommended equipment:
• 100 Ohm RTD Simulator OMEGA
® Model No.: CL510-1
• Handheld Digital Multi-meter, OMEGA ® Model No.: HHM29
• Dc Power Supply, OMEGA ® Model No.: PSU-93
1. Remove enclosure cover
2. Connect the power supply and multimeter as shown in the figure
below.
3. Disconnect the 2-wire Connector “J4” from the main Board.
4. Connect the RTD simulator to the “J4” header on the main board as
shown below.
5. Apply power to transmitter and allow to warm up for 10 min.
6. Set the RTD simulator to the 0ºF position.
7. Adjust potentiometer “P5” on the main board for a output reading
of 0.023 Vdc
8. Set the RTD simulator to the 150ºF position.
9. Adjust potentiometer “P4” for a output reading of 0.901 Vdc
10. Repeat steps 6, 7, 8 and 9 as necessary until proper readings are
maintained.
11. Calibration complete.
Figure 9 - HX93AV Calibration Procedure
Temperature Adjustment
.901 V
HHM29
10A
24V
PSU-93
+
CL-301
P4
J4
TB1
P5
TB2
–
COM uAmA V
SENSOR HEAD
13
2
3
2
1
15
HX93A, HX93DA SERIES
RH/Temperature Transmitter