HX93A, HX93DA SERIES | 11 |
RH/Temperature Transmitter |
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® Model No.:
•Handheld Digital
•Dc Power Supply, OMEGA® Model No.:
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 | 23 | 1 2 |
setting. | 1 | 3 |
TB1 | P1 P3 | TB2 |
|
| P2 |
HHM29
16.00 mA
SENSOR HEAD
10A uAmA COM V
+ 24V –
CALIBRATION BOTTLE
Figure 6 - HX93AC Calibration Procedure | 7 |
Relative Humidity Adjustment |