Data Sheet for Product

Technical Specification Sheet
Document No. 149-103
September 18, 2013
Siemens Industry, Inc. Page 1 of 2
Series 2300 Relative Humidity and
Temperature Room Units
Figure 1. Series 2300 Relative Humidity and Temperature
Room Unit.
The Series 2300 Relative Humidity and Temperature
Room Units from Siemens Industry, Inc. offer a simple
temperature sensing functionality. These devices work
with virtually any building automation control system to
deliver exceptional occupant comfort. All room units
incorporate precision humidity and temperature
sensing elements to accurately and reliably measure
room temperature. Their compact, low-profile design
results in an attractive, inconspicuous installation.
Strategically placed ventilation slots in the housing
optimize airflow through the cover for fast
measurement response and superior control.
These room units provide accurate, reliable sensing of
room humidity and temperature. Various models can
be used with all equipment controllers that accept the
respective NTC thermistor or RTD inputs for primary
control.
Applications
These room units connect to the controller's input
points via free wire cabling, which is terminated on the
controller's terminal block connector.
Specifications
Temperature Specifications
Signal Selectable Models:
Operating Range, Selectable*
32°F to 122°F (0°C to 50°C)
55
°F to 95°F (13°C to 35°C)
40
°
F to 90
°
F (4
°
C to 32
°
C)
Output Signal
Select 0-5V, 0-10V, 4-20 mA
Setpoint Output Range
55°F to 95°F (13°C to 35°C)
selectable, 0-10V or 0-5V,
4-20 mA
Sensing Element Type
Digital Sensor IC (band gap)
(QFA33SS types)
Sensing Element Accuracy
Voltage Mode
Current Mode
± 0.9°F (± 0.5°C)
+ 1.8°F (+ 1°C)
2° to 4°F (1° to 3°C) low
Override Signal
Relay/dry contact
(1 amp @ 30 Vdc max.)
* Selectable operating range is only possible on display
versions (QFA3332.FWNN, QFA3330.FWNN,
QFA3312.FWNN, and QFA33SS.FWN). Sensing only versions
(QFAxxSS.E types) measure a fixed range of 32°F to 122°F
(0°C to 50°C) over the selected output signal.
Resistive Output Models:
Operating Range
32°F to 122°F (0°C to 50°C)
Output Signal
Changing resistance
Setpoint Output Range
55°F to 95°F (13°C to 35°C)
0-10V
Sensing Element Type 1K Ohm Platinum RTD
(QFA3312 types)
10K Ohm NTC Type II
thermistor (QFA3330 types)
Sensing Element Accuracy
10K ohm Thermistor
55°F to 80.6°F (13°C to 27°C)
±
0.5
°
F (±0.3
°
C)
80.6
°
F to 95
°
F (27
°
C to 35
°
C)
±
1.0
°
F (
±
0.5
°
C)
1K ohm RTD mid-range
75°F (24°C)
±0.75°F (± 0.4°C)
Override Signal
Relay/dry contact
(1 amp @ 30 Vdc max.)