Install Instructions

H7725A, H7726A, H7735A, H7736A WALL HUMIDITY/ TEMPERATURE SENSORS
3 31-00447M—01
3. Refer to OPERATION section to change offsets as
needed. Setting an offset of zero restores factory cal-
ibration.
SPECIFICATION BY MODEL
(TABLE 2).
Table 2. Models.
WASTE ELECTRICAL AND
ELECTRONIC EQUIPMENT
(WEEE)
Correct disposal of this product (applicable in
the European Union and other European
countries with separate collection systems).
This product should be disposed of, at the end
of its useful life, as per applicable local laws,
regulations, and procedures.
PROP-65 WARNING
This product can expose you to chemicals
including 1, 3-Butadiene, which is known to the
state of California to cause cancer and
reproductive harm. For more information, go to
www.P65Warnings.ca.gov.
SPECIFICATIONS
Table 3. Specifications.
1
One side of transformer secondary is connected to signal
common. Dedicated transformer is recommended.
2
Time for reaching 63% of reading at 25°C and 1 m/s air-
flow.
3
Long term exposures to conditions outside normal range
or high humidity may temporarily offset the RH reading
(+3%RH after 60 hours).
4
15-30VDC/24VAC power supply voltage required for
10 volt output.
Product Number
Humidity
Accuracy
Temperature
Sensor
H7726A2020 2% 1097 Ohm
H7725A2010 2% 20 kOhm
H7736A2022 3% 1097 Ohm
H7735A2012 3% 20 kOhm
H7725A2010-C 2% NIST Certified 20 kOhm
Power supply
AC Supply/
DC Supply
24VAC, 100mA max.
12-30VDC, 50mA max.
Outputs RH
3-wire 0-5V/10V
4
,
3-wire or 2-wire 4-20mA (Selectable)
Output scaling RH 0-100%RH
Thermistor/
RTD
Nominal
resistance @ 25 °C
20 kOhm
1097 kOhm
Relative
Humidity
Accuracy
2% models: ±2% max 0 to 100% RH,
±1.5% typ 0 to 80% RH @25°C
3% models: ±3% max 0 to 100% RH,
±2% typ 0 to 100% RH @25°C
Resolution 0.01% RH
Hysteresis ±0.8% RH
Repeatability 0.08% RH
Non-linearity Factory linearized <1%RH
Temperature
coefficient
Fully compensated by on-board
sensor
Response time
2
8s
Output update 0.5s
Operating range 0 to 100% RH (non-condensing)
Long term drift <0.25% RH per year
Operating
conditions
3
41 to 140°F
(5 to 60°C)
@ 20-80% RH
Enclosure
Materials ABS/Polycarbonate
Dimensions
5.66”h x 3.00”w x 0.36”d (1.69”
depth including recessed
components)
Enclosure Rating IP20/NEMA 1
Unit Temp Rating -40°F to 158°F (-40 to 70°C)