Brochure

13
www.usa.siemens.com/hvac
Part Number Version Output Range Category Power Housing
Humidity Only Humidity / Temp. 0 to 10 Vdc 4 to 20 mA RTD 1K Pt (385) LCD Display % Relative Humidity Degree F 2% 2% Certied 24 Vac 13.5 to 35 Vdc Polycarbonate
QFA3100
n n
0 to 100 -40 to 158
n n n n
QFA3101
n n
0 to 100 -40 to 158
n n n
QFA3160
n n n
0 to 100 -40 to 158
n n n n
QFA3160D
n n n n
0 to 100 -40 to 158
n n n n
QFA3171
n n n
0 to 100 -40 to 158
n n n
QFA3171D
n n n n
0 to 100 -40 to 158
n n n
QFA4160
n n n
0 to 100 -40 to 158
n n n n
QFA4160D
n n n n
0 to 100 -40 to 158
n n n n
QFA4171
n n n
0 to 100 -40 to 158
n n n
QFA4171D
n n n n
0 to 100 -40 to 158
n n n
Room Relative Humidity and
Relative Humidity/Temperature
Sensors monitor and transmit
changes in humidity and
temperature to the building
control systems. High quality
2% and 2% certified sensors are
not only exact at 73°F room
temperature, but across the
entire operating range of -40°
to 158°F. The humidity only
units are available in either 0 to
10 Vdc or 4 to 20 mA outputs.
Combination humidity and
temperature units are available
in either dual current or voltage
versions, transmitting
proportional signals back to the
controller. Liquid Crystal
Display shows Fahrenheit or
Celsius readings.
QFA3160 QFA3160D
Room Humidity Sensors
Part Number Version Output Range Category Power Housing
Concelaed Setpoint Exposed Setpoint Relay % Relative Humidity Degree F 5% 24 Vac White PC Lexan 940
QFA1000
n n
30 to 90 32 to 122
n n n
QFA1001
n n
30 to 90 32 to 122
n n n
Hygrostats with potential-free
microswitch (SPDT) are used for
controlling and monitoring
minimum or maximum relative
humidity levels in ventilation or
air conditioning facilities. They
ensure room humidity control
within the selectable range of
30 to 90% relative humidity by
controlling humidification or
dehumidification equipment.
The humidity measuring
element is made of stabilized
plastic. Setpoint knob adjusts
and controls the upper
switching point. Mount directly
on the wall or in a recessed
conduit box.
QFA1000
Room Hygrostats