Table of Contents
Advertisement
11. Calibration
Your transmitter has been factory calibrated to meet or exceed the
specifications outlined in this manual. To maintain original
specifications it is generally recommended that your transmitter be re-
calibrated on an annual basis depending on operating conditions.
12. Calibration Procedure for HX93AC (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 "P1" for a output reading of 5.76 mA
6. Place unit in a 75% RH environment and allow to stabilize for 15 min.
7. Adjust potentiometer "P2" for a output reading of 16.0 mA
8. Repeat steps 4, 5, 6, and 7 as necessary until proper readings are maintained.
9. Calibration complete.
NOTE:
Do not adjust
P3. This is a
factory
setting.
HX93A, HX93DA SERIES
RH/Temperature Transmitter
P1 P3
SENSOR HEAD
Figure 6 - HX93AC Calibration Procedure
Relative Humidity Adjustment
Model No.: HX92-CAL
®
Model No.: HHM29
®
Model No.: PSU-93
®
P2
+
HX92-CA
CALIBRATION BOTTLE
HHM29
16.00 mA
10A uAmA COM V
24V
–
PSU-93
11
7
Advertisement
Table of Contents
