H7625A, H7635A HUMIDITY/TEMPERATURE SENSORS
5
62-0208—3
APPENDIX
RH Test and Configuration DIP Switch Settings (Table 4)
IMPORTANT
• Only adjust these switches for troubleshooting or
• recalibrating the sensor. (Adjustment is not
normally necessary.)
• For normal operation, always keep DIP switch 3
in the ON position. When DIP switch 3 is off, the
RH transmitter cannot read the sensor. This
inability-to-read forces the output to never
change.
Table 4. Test and Calibration Settings (6-Switch Block).
0% RH Output (for Testing Only)
Transmitter always outputs a signal of 4 mA or 0 Vdc. The
sensor does not affect the transmitter output.
50% RH Output (for Testing Only)
Transmitter always outputs a signal of 12 mA, 2.5 VDC, or
5 VDC. The sensor does not affect the transmitter output.
100% RH Output
Transmitter always outputs a signal of 20 mA, 5 VDC, or
10 VDC. The sensor does not affect the transmitter
output. Sensor doesn’t affect the transmitter output.
Normal Operating Condition
DIP switch 3 must be set in the On position for normal
operation. All other DIP switches must be set Off.
Setting
6
5
4
3
2
1
Normal Operation (Default)
— — — On — —
0% RH Output
On — — — — —
50% RH Output
— On — — — —
100% RH Output
— — On — — —
Increment RH Output
— — — — On —
Decrement RH Output
— — — — — On
Reset to Original Calibration
— — — — On On
