• This product is not intended for life or safety applications.
• Do not install this product in hazardous or classied locations.
•
Read and understand the instructions before installing this product.
• Turn o all power supplying equipment before working on it.
• The installer is responsible for conformance to all applicable codes.
If this product is used in a manner not specied by the manufacturer, the protection
provided by the product may be impaired. No responsibility is assumed by the
manufacturer for any consequences arising out of the use of this material.
Product Overview
The HW2 Series of humidity sensors for living space is a exible 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.
Product Identication
User InterfaceOutputRH Accuracy*Temperature
HW2
T = Color touchscreen
L = 3-button LCD display
X = None
* Replaceable 1% with NIST certicate, 2% with NIST certicate and 2% elements availab le.
** Available in HW2XA2G only.
*** Available in HW2XA2R only.
A = Analog output 2 = 2%A = Transmitter only
C = 1000 PT RTD
D = 10K T2 thermistor
G = 10K CPC thermistor**
H = 10K T3 thermistor
K = 10K curve G/11K shunt
M = 20K NTC thermistor
N = 1.8K TAC thermistor
R = 10K curve G***
Specications
OPERATING ENVIRONMENT
Input Power Class 2; 20 to 30 Vdc, 24 Vac, 50 to 60 Hz
Analog Output Select able 4 to 20 mA, 0 to 5 V, 0 to 10 V
Operating Temp. Range 0 to 50 °C (32 to 122 °F)
Operating Humidity Range 0 to 95% RH non- condensing
Housing Material High-imp act ABS plastic
Terminal Block Torque 0.5 to 0.6 N-m (0.37 to 0.44 in-lbf)
RH TRANSMITTER
HS Sensor Thin-lm capacitive, replaceable
Accuracy ±2% from 10 to 80 % RH @ 25°C (77 °F)
Hysteresis 1.5 % typ ical
Stability ±1% @ 20°C (68 °F) annually for 2 year s
Output Range 0 to 100% RH
Temperature Coecient ±0.1% RH/°C above or below 25 °C (77 °F ) typical
The HW2 Series sensor measures the RH and temperature in a room and provides analog outputs to a controller.
1. Remove the cover from the base at the bottom of the device.
2. Position the sensor base vertically on the wall 1.35 m (4.5 ft.) above the oor with the “UP” arrow facing upward. Locate away
from windows, vents and other sources of draft. If possible, do not mount on an external wall, as this may cause inaccurate
temperature readings.
24
(0.9)
3. Pull 18 or 22 AWG cable(s) through the hole in the backplate.
2Voltage output range*ON - 0-5V output range enabled
OFF 0-10V output range enabled
3UnusedUnused
4UnusedUnused
5Setpoint output typeON - Temperature setpoint enabled (temp range selected on DIP switch 6)
OFF - RH or Fan Speed setpoint enabled (specic setpoint output type to be
selected on DIP switch 6)
Models without RH option select only temp or fan setpoint
6Setpoint output temperature range or
RH/Fan Speed output type
7Display times out and turns o after
6-10 seconds of touchscreen/button
press
8Touchscreen touch functions and
buttons are disabled
* Only used with voltage output mode enabled.
Temperature setpoint (must be enabled on DIP switch 5)
ON - Temp range 1, 50 to 95 °F (10 to 35 °C) enabled
OFF - Temp range 2, 32 to 122 °F (0 to 50 °C) enabled
RH or Fan Speed setpoint (must be enabled on DIP switch 5)
ON - RH setpoint enabled
OFF - Fan Speed setpoint enabled
Models without RH option, set to OFF
ON - Display Timeout enabled
OFF - Display Timeout disabled
ON - Touchscreen touch/button functions disabled
OFF - Touchscreen touch/button functions enabled
7. With sensor base fully installed, align top of cover to mounting tabs on top of sensor base. Swing cover downward until it
latches at the bottom.
8. Install locking screw to secure cover in closed position.
Main Screen
The touchscreen user interface displays applicable sensor output values (temperature and RH), setpoint value and menu button.
Menu button
Menu Screen
The menu screen opens when pressing the Menu button on the main screen. Integrator’s submenu, occupancy/override,
Fahrenheit/Celsius, settings and setpoint submenu (temp, RH or fan, determined by DIP switch settings) are displayed on the
menu screen.
Temperature setpoint
DIP switch selected
Menu Button Functions
Press this icon to access the
Integrator’s menu.
Occupied Override Button
Press this icon to provide
momentary ground output to
the controller
O: indicates that the concentraon of hazardous substance in all of the homogeneous materials
for this part is below the limit as spulated in GB/T 26572.
X: indicates that concentraon of hazardous substance in at least one of the homogeneous
materials used for this part is above the limit as spulated in GB/T 26572