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Humidity Sensors
H7625A
H7635A
H7655A
H7625B
H7635B,C
H7655B
H7625, H7635, and H7655 Humidity and Temperature Transmitters
The H7625, H7635, and H7655 are highly accurate, stable humidity
transducers designed for use with HVAC controllers such as the
T7350 Thermostat, T775U Remote Humidity Controller, and W7760
Direct Digital Controllers. The Ceramic Technology humidity
sensor is not affected by condensation and provides excellent
long-term stability.
• Ceramic Technology overcomes the limitations of other resistance
based humidity sensors that use water soluble polymer coatings.
• Ceramic Technology allows sensors to recover fully from
condensation, fog, and high humidity.
• Highly accurate, repeatable, stable output with negligible hysteresis.
• Temperature compensated output.
• Zero and span trimmers, and increment/decrement recalibration
feature.
• All units have selectable 4-20 mA, 0-10 Vdc, or 0-5 Vdc output.
• NIST traceable 2%, 3%, and 5% calibration, every sensor calibrated
at 3 different points.
• All humidity sensors use the same enclosure as the T7770 sensor,
except the H7655A, which uses the T7047-like enclosure.
Application: Humidity and Temperature
Dimensions, Approximate: 4 9/16 in. high, 3 in. wide, 7/8 in. deep
(116 mm high, 76.5 mm wide, 22 mm deep)
Voltag e: 18 – 40 VDC / 18 - 28 VAC
Product Number
H7625A010/U Wall mount ± 2% from
H7625B2006/U Duct mount ± 2% from
H7626A2020/U Wall mount ± 2% from
H7626B2024/U Duct mount ± 2% from
H7635A2012/U Wall mount ± 3% from
H7635B2018/U Duct mount ± 3% from
H7635C2015/U Outdoor
H7636A2022/U Wall mount ± 3% from
H7636B2026/U Duct mount ± 3% from
H7655A1001/U Wall mount ± 5% from
H7655B2014/U Duct mount ± 5% from
H7656B2029/U Duct mount ± 5% from
Application
Type
mount
Accuracy
(% RH)
20-95% RH
20-95% RH
20-95% RH
20-95% RH
20-95% RH
20-95% RH
± 3% from
20-95% RH
20-95% RH
20-95% RH
30-70% RH
25-95% RH
25-95% RH
Temperature
Output Humidity Output Comments Used With
20K ohm NTC 4-20mA, 0-5Vdc, or
20K ohm NTC 4-20mA, 0-5Vdc, or
1097 ohm at 77F 4-20mA, 0-5Vdc, or
1097 ohm at 77F 4-20mA, 0-5Vdc, or
20K ohm NTC 4-20mA, 0-5Vdc, or
20K ohm NTC 4-20mA, 0-5Vdc, or
20K ohm NTC 4-20mA, 0-5Vdc, or
1097 ohm at 77F 4-20mA, 0-5Vdc, or
1097 ohm at 77F 4-20mA, 0-5Vdc, or
none 0-10Vdc Uses different enclosure (same as
20K ohm NTC 4-20mA, 0-5Vdc, or
1097 ohm at 77F 4-20mA, 0-5Vdc, or
0-10Vdc selectable
0-10Vdc selectable
0-10Vdc selectable
0-10Vdc selectable
0-10Vdc selectable
0-10Vdc selectable
0-10Vdc selectable
0-10Vdc selectable
0-10Vdc selectable
0-10Vdc selectable
0-10Vdc selectable
Operating Temperature Range: -10 to 140 F (23 to 60 C)
H7625A only: 32 to 122 F (0 to 50 C)
Shipping Temperature Range: -40 to 160 F (-40 to 71 C)
Operating Humidity Range (% RH): 0 to 95% RH non-condensing
H7625A only: 0 to 100% RH
Excel 10, Excel 15, T7350
— Excel 10, Excel 15, T7350
— Excel 10, Excel 15, T7350,
— Excel 10, Excel 15, T7350,
— Excel 10, Excel 15, T7350
— Excel 10, Excel 15, T7350
— Excel 10, Excel 15, T7350
— Excel 10, Excel 15, T7350,
— Excel 10, Excel 15, T7350,
T7047 Sensor). Polym er
capacitance humidity sensor
— Excel 10, Excel 15, T7350
— Excel 10, Excel 15, T7350,
T775 Series 2000
T775 Series 2000
T775 Series 2000
T775 Series 2000
Excel 10, Excel 15, T7350
T775 Series 2000
Commercial
Components
70-6910 453
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