Brochure

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www.usa.siemens.com/hvac
Dew Point Sensor
Part Number Version Output Range Power Housing
Humidity Temperature 0 to 10 Vdc 4 to 20 mA Relay Contact LCD Display % Relative Humidity Degree F 24 Vac 13.5 to 35 Vdc Polycarbonate
QXA2000
n n
0 to 100
n n
Accessories
Part Number Description
AQY2010 10' Cable for Remote Mounting of QFA31xx, QFA41xx, QFM31xx and QFM41xx Removable Sensor Tip
AQY2030 30' Cable for Remote Mounting of QFA31xx, QFA41xx, QFM31xx and QFM41xx Removable Sensor Tip
AQF3100 Sun Shield — for use with Outdoor Air Humidity Sensors
AQF3150 Replacement Tip Duct Relative Humidity & Temperature Sensors
QXA2000
Used to monitor condensation
on chilled ceilings, this sensor
provides potential-free relay
output with a switching point
at 95% ± 4% RH and a fast
response time.
Whether you’re looking for
remote mounting cable or a
sun shield to protect a sensor
from damaging rays, find what
you need from Siemens.
AQF3150 AQF3100
Part Number Version Output Range Category Power Housing
External Setpoint Internal Setpoint Relay % Relative Humidity Degree F 5% 24 Vac White PC Lexan 940
QFM81.2
n n
15 to 95 32 to 158
n n n
QFM81.21
n n
15 to 95 32 to 158
n n n
On/off hygrostats with
potential-free microswitch
(SPDT) are used for controlling
humidification and
dehumidification equipment.
The temperature-compensated
humidity sensor obtains
temperature-independent
humidity measurements.
Stabilized sensing strip
provides good linearity,
remains very stable even at
high humidity, and is
insensitive to dust and
contaminated air. Field
calibration possible.
QFM81.21
Duct Hygrostats