Calibration Procedure For Hx93Av; Relative Humidity Adjustment; Figure 8 Hx93Av Calibration Procedure - Omega Engineering RH/Temperature Transmitter HX93A User Manual

14. Calibration Procedure for HX93AV (all styles)

Relative Humidity Adjustment

Recommended equipment:
• Humidity Calibration Kit, OMEGA
• Handheld Digital Multi-meter, OMEGA
• Dc Power Supply, OMEGA
1. Remove enclosure cover.
2. Connect transmitter as shown in figure below.
3. Apply power to transmitter and allow to warm up for 15 min.
4. Place unit in a 11% RH environment and allow to stabilize for 15 min.
5. Adjust potentiometer "P3" for a output reading of .110 Vdc.
6. Place unit in a 75% RH environment and allow to stabilize for 15 min.
7. Adjust potentiometer "P2" for a output reading of .750 Vdc.
8. Repeat steps 4, 5, 6, and 7 as necessary until proper readings are
maintained.
9. Calibration complete.
HX93A, HX93DA SERIES
RH/Temperature Transmitter
P3
P1
SENSOR HEAD
Figure 8 - HX93AV Calibration Procedure

Relative Humidity Adjustment

® Model No.: HX92-CAL
® Model No.: HHM29B
® Model No.: PSU-93
P2
+
HX92-CA
CALIBRATION BOTTLE
HHM29
.750 V
10A uAmA COM V
24V –
PSU-93
14
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