The Q-Series Duct Relative Humidity and Relative
Humidity & Temperature Sensors monitor and transmit
changes in humidity and temperature to the building
control systems. These units are especially suited for
applications where precise, stable humidity sensing is
required. Certified units are also available where
certification is required. Several models are available ?
for humidity only (in 5%, 2% and certified) or for humidity
and temperature sensing (also in 5%, 2% and certified
versions). The humidity only units are available in either
4 to 20 mA or 0 to 10 Volt signal versions. Combination
humidity and temperature units are also available in
either dual current or voltage versions, transmitting
proportional signals back to the controller. Nickel 1000
ohm or Platinum 1000 ohm RTD temperature outputs on
combination versions are also offered.
2% and certified versions are equipped with a
removable, replaceable sensing tip. The removable
sensing tips have a Lumberg connection that allows the
user to screw off the tip without disrupting the installation
or wiring. Siemens sensors with replaceable tips are
ideal for applications where measurement accuracy is
critical and sensor replacement is not an option.
Replaceable sensing tips eliminate the need for
All certified sensors include a certificate of calibration.
Humidity calibration and certification is based on a
3-point process at 20, 50, and 85% rh @ 23°C.