Figure 5 HMD60 Adjustment Trimmer
1 Use a Phillips head screwdriver to
rotate the RH or T adjustment trimmer.
To increase the measurement output
value, rotate the trimmer clockwise. To
decrease, rotate counterclockwise.
Note that there is a slight delay before
the measurement output changes
after rotating the trimmer.
You can adjust the transmitter's RH (HMD62) or T (HMD62 and TMD62) measurement output
with the trimmers on the component board. During trimmer adjustment, the output of the
transmitter is corrected using the trimmers until the output matches the known value of a
reference.
±0 %RH
−1 %RH
−2 %RH
−3 %RH
−4 %RH
−5 %RH
+1 %RH
+2 %RH
+3 %RH
+4 %RH
+5 %RH
±0 °C
−0.06 °C
−0.12 °C
−0.18 °C
−0.24 °C
−0.3 °C
+0.06 °C
+0.12 °C
+0.18 °C
+0.24 °C
+0.3 °C
HMD62: −5 %RH ... +5 %RH TMD62, HMD62: −0.3 °C ... +0.3 °C
RH T
Figure 6 RH and T Trimmer Adjustment Ranges (Indicative)
You can only calibrate the relative humidity measurement (RH) and temperature
measurement (T). Other parameters (available for HMD62) are calculated
internally based on RH and T. Check that the output selection DIP switch is set to
RH when making adjustments with the physical trimmer; when using the Insight
PC software, set all DIP switches to the OFF position.
If you use the Insight PC software to adjust the measurement or to
restore the factory settings, always return the physical trimmer to the middle
position before starting. When you make an adjustment with Insight, the
position in which the trimmer is at that point is set as the ±0 point.
CAUTION!
HMD62 TMD62 User Guide M212016EN-A
10
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