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BT72i Relative Humidity Sensor User’s Guide
Technical Specifications
Sensor kind
Analog, generates an output voltage
0 – 5 V
Measurement range
0 -‐ 100%
Resolution using
12 bit AD converter
0.04 % RH
Calibration function
RH (%) = 32.26 * V
out
(V) -‐ 25.81
Supplied current
0.5 mA
Response time
(for 90% change in reading)
15 s in slowly moving air at 25
°
C
Specification for Honeywell HIH 4000
Integrated Circuit Humidity Sensor at 25
°
C and 5 VDC
RH Accuracy
RH Interchangeability
RH Linearity
Operating temperature
Temperature compensation
Effect at 0% RH
Effect at 100% RH
±
2% RH (after individual calibration)
±
5% RH, 0-‐60% RH;
±
8% RH @ 90% RH typical
(with stand. cal.)
±
0.5% RH typical
0 -‐ 85
°
C
True RH=(Sensor RH)/(1.0546-‐0.00216T) T in
°
C
±
0.007% RH/
°
C (negligible)
-‐ 0.22% RH/
°
C
Connection
IEEE1394 connector for BT-‐IEEE1394 sensor cable.
Sensor cable
not
delivered with the sensor.
Warranty:
The Relative Humidity sensor BT72i is warranted to be free from defects in materials
and workmanship for a period of 12 months from the date of purchase provided that
it has been used under normal laboratory conditions. This warranty does not apply if
the sensor has been damaged by accident or misuse.
Note:
This product is to be used for educational purposes only. It is not appropriate
for industrial, medical, research, or commercial applications.
Rev. 13
/10/2016
