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Humidity Monitoring | Analog Humidity Sensors
HW2 SERIES
Wall Mount Humidity Sensors
HW2Txxxx HW2Lxxxx HW2Xxxxx
The HW2 Series of humidity sensors for living space is a flexible
multisensor platform for use with BAS controllers designed to accept
4 to 20mA, 0 to 5Vdc or 0 to 10Vdc outputs. HW2 Series sensors are
available with three user interface options: touchscreen, LCD with three
buttons and blank. Humidity and temperature sensors are included
with all HW2 Series sensors.
SPECIFICATIONS
OPERATING ENVIRONMENT
Input Power Class 2; 20 to 30 Vdc, 24 Vac, 50 to 60 Hz
Analog Output Selectable 4 to 20 mA, 0 to 5 V, 0 to 10 V
Operating Temperature Range 0 to 50 °C (32 to 122 °F)
Operating Humidity Range 0 to 95% RH non-condensing
Housing Material High-impact ABS plastic
Terminal Block Torque 0.5 to 0.6 N-m (0.37 to 0.44 in-lbf)
RH TRANSMITTER
HS Sensor Thin-film capacitive, replaceable
Accuracy ±2% from 10 to 80% RH @ 25°C (77 °F)
Hysteresis 1.5% typical
Stability ±1% @ 20°C (68 °F) annually for 2 years
Output Range 0 to 100% RH
Temperature Coefficient
TEMPERATURE TRANSMITTER OPTION
Sensor Type Solid state, integrated circuit
Accuracy ±0.2 °C (±0.4 °F) typical
Resolution 0.1 °C (0.1 °F)
Range 0 to 50 °C (32 to 122 °F)
DISPLAY MODELS
Touchscreen
LCD
±0.1% RH/°C above or below 25 °C
(77 °F) typical
61 mm (2.4 in), color, backlit, capacitive,
240x300 px
Setpoint: 0-10 Vdc. Temperature, humidity
or fan speed selectable
Timeout override: Display timeout*
Lockout override: Touchscreen/button
lockout*
52mm (2.05 in), segmented with 3 buttons
Setpoint: 0-10Vdc. Temperature, humidity
or fan speed selectable
Timeout override: Display timeout*
Lockout override: Touchscreen/button
lockout*
Sensor element
Thin-lm capacitive sensor
element recovers from
100% saturation
Interchangable
element
Fully interchangeable element
to 1% or 2% accuracy with
NIST calibration certicate…no
calibration
Flexible
Polarity insensitive, two-wire
4 to 20 mA or 3-wire 0-5/0-10
Vdc versions…exible systems
compatibity…save time in the
eld, stock fewer devices
Field replaceable
Replace element in the eld…
maintain accuracy and minimize
downtime
Easy to install
Large wiring terminals on
baseplate and snap-on covers
with security screw simplify
installation and service
Calibration free
Calibration-free interchangeable
NIST traceable HS element
APPLICATIONS
• Controlling HVAC systems for
improved comfort and energy
savings
• Museums, schools, printing
shops, and other locations
requiring humidity control
SETPOINTS**
Temperature Setpoint
Humidity
Setpoint
Fan Speed
Setpoint
OVERRIDE
Override Button
WIRING TERMINALS
Terminal Blocks Screw terminals, 18-24 AWG
Screw Terminal Torque 0.2 N-m (2.0 in-lbF) max.
WARRANTY
Limited Warranty 5 years
COMPLIANCE INFORMATION
Agency Approvals
• Facilitating compliance
with ASHRAE standards for
environmental control and
indoor air quality
0 to 10V output
Scale: 10 to 35 °C (50 to 95 °F) /
0 to 50 °C (32 to 122 °F)
0 to 10V output
Scale: 0 to 100% RH
0 to 10V output
Off 0V, Low 3.3V, Med. 6.7V, High 10.0V
Display models feature
momentary-to-ground override button
UL 916, European conformance CE:
EN61000-6-2
EN61000-6-3
EN61000 Series - industrial immunity
EN 61326-1
FCC Part 15 Class B, REACH, RoHS, RCM
(Australia), ICES-003 (Canada)
*DIP switch selectable..
** One setpoint type is selectable via DIP
switch on display models only.
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POWER (+24)
Humidity Monitoring | HW2 SeriesHumidity Monitoring | Analog Humidity Sensors
(4.5)
(3.3)
OR OUT
POWER (+24)
OR OUT
DIMENSIONAL DRAWING USER INTERFACE TYPES
115
85
24
(0.9)
HW2L/HW2T DISPLAY MODELS WITH TEMP TRANSMITTER
Wiring Diagram
OVERRIDE
SETPOINT OUT
RH OUT
TEMP OUT
COMMON
10 9876 5432 1
HW2X WITH TEMP TRANSMITTER
Wiring Diagram
RH OUT
TEMP OUT
COMMON
Touchscreen
LCD with Buttons
Blank
HW2L/HW2T DISPLAY MODELS WITH RTD/THERMISTOR
Wiring Diagram
OVERRIDE
SETPOINT OUT
RH OUT
RTD/THERMISTOR OUT
RTD/THERMIST
COMMON
POWER (+24)
10 9876 5432 1
HW2X WITH RTD/THERMISTOR
Wiring Diagram
RH OUT
RTD/THERMISTOR OUT
RTD/THERMIST
COMMON
POWER (+24)
54321
54321
ORDERING INFORMATION
User Interface TemperatureOutput RH Accuracy*
HW2
T
=
Color touchscreen
L
=
3-but ton LCD display
X
=
None
A = Analog output 2 = 2%
A
=
Transmitter only
C
=
1000 PT RT D
D
=
10K T2 therm istor
G
=
10K CPC therm istor**
H
=
10K T3 therm istor
K
=
10K curve G/11K shunt
M
=
20K NTC ther mistor
N
=
1.8K TAC thermist or
R
=
10K curve G** *
Example:
HW2
* Replace able 1% with NIST cert icate, 2% with NIS T certicate and 2 % elements availa ble.
** Availab le in HW2XA2G onl y.
*** Avail able in HW2XA2R o nly.
2
AAT
REPLACEABLE RH ELEMENTS
MODEL RH ACCU RACY
HS1N ±1% X Replaceable RH sensor, 1% with NIST certication
HS2N ±2% X Replaceable RH sensor, 2% with NIST certication
HS2X ±2% Replaceable RH sensor, 2%
Find Quality Products Online at: sales@GlobalTestSupply.com
CALIBRATION
CERTIFICATE
www.GlobalTestSupply.com
DESCRIPTION
Replaceable RH Element
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