Data Sheet for Product

Page 2 of 4 Siemens Industry, Inc.
Specifications – Humidity Element
Measurement range
0 to 100% RH
Accuracy
2% RH, 0 to 100% RH @ 73F (23C)
Temperature effect
Less than 0.1% per degree C
Time Constant
< 20 seconds
Output signal
4 to 20 mA or 0 to 10 Vdc, 0 to100%RH, linear, proportional
Specifications–Temperature Element (for combination RH/T units only)
Measurement range (selectable)
32 to 122F (0 to 50C) (Default)
-31 to 95F (-35 to 35C)
-40 to 158F (-40 to 70C)
Jumper Position
R2
R1
R3
Accuracy
0.54F @ 73F (0.3C @ 23C)
Time Constant
8.5 minutes (dependent on airflow and wall coupling)
Output signal
4 to 20 mA or 0 to 10 Vdc, full range, linear, proportional
General Specifications
Installation
18 AWG cable length shared in conduit with other sensor wiring 750 ft
(229 m) max.
Connections
Screw terminals
Voltage requirement
0 to 10 Vdc output types
4 to 20 mA output types
13.5 to 35 Vdc or 24 Vac + 20%
13.5 to 35 Vdc
Power consumption
<1 VA
Material Type
Polycarbonate plastic
CE and UL listed
UL 873 standard for Temperature Indicating and Regulating Equipment
Ordering Information
Part Number
Description
QFA3100
Outdoor air humidity sensor (2%), 0 to 10 Vdc
QFA3101
Outdoor air humidity sensor (2%), 4 to 20 mA
QFA3160
Outdoor air humidity sensor (2%), 0 to 10 Vdc/Temp 0 to 10 Vdc
QFA3160D
Outdoor air humidity sensor (2%), 0 to 10 Vdc/Temp 0 to 10 Vdc with
display
QFA3171
Outdoor air humidity sensor (2%), 4 to 20 mA Temp 4 to 20 mA
QFA3171D
Outdoor air humidity sensor (2%), 4 to 20 mA Temp 4 to 20 mA with
display
QFA4160
Outdoor air humidity sensor (2%), 0 to 10 Vdc/Temp 0 to 10 Vdc
(certified version)
QFA4171
Outdoor air humidity sensor (2%), 4 to 20 mA/Temp 4 to 20 mA
(certified version)
QFA4171D
Outdoor air humidity sensor (2%), 4 to 20 mA/Temp 4 to 20 mA
(certified version) with display