Product specifications

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DIFFERENTIAL PRESSURE
12
Model 265
ential Pressure Transducer

■ 
■ 
■ 
4 to 20 mA Analog Outputs Are Compatible
with All Energy Management Systems
■ 
■ 
■ 
■ Internal Regulation Permits Use with
Unregulated DC Power Supplies
■ 
■ Meets CE Conformance Standards
APPLICATIONS
■ 

■ Energy Management Systems
■ 
■ Environmental Pollution Control
■ Static Duct and Clean Room Pressures
■ 

The calibration of this product is NIST traceable.
U.S. Patent Nos. 5442962, 6019002, 6014800 and other Patents
Pending.
DESCRIPTION
The Model 265 is designed to reduce installation costs while in-
creasing overall operating eciency. At ±1% full scale accuracy
-
perior positive and negative pressure sensing required for high ef-
ciency air control systems.

tightest matrix. Installation is easy with an integral mounting

the on the face of the unit, and a screw terminal strip for electrical
termination.

Cover Option
SPECIFICATIONS
Performance Data Physical Description Electrical Data (Voltage)
Standard Optional Pressure Fittings 1/4” Fitting Circuit 3-Wire (Com, Out, Exc)
Accuracy RSS
1
(at constant temp)
±1.0% FS ±0.4% FS ±0.22% FS
Case Fire Retardent Glass
Filled Polyester
(UL 94-V Approved)
Excitation/Output
4
9 to 30 VDC / 0 to 5 VDC
5
9 to 30 VAC / 0 to 5 VDC
12 to 30 VAC / 0 to 10 VDC
5
Non-Linearity, BFSL ±0.98% FS ±0.38% FS ±0.22% FS
Weight 3 oz Output Impedance <100 ohms
Hysteresis 0.10% FS 0.10% FS 0.10% FS
Elec. Connection Screw Terminal Strip Bidirectional output at zero pressure 2.5 VDC (±50 mV)
Non-Repeatability 0.05% FS 0.05% FS 0.05% FS
4
Calibrated into 50K ohm load. Operable into 5000 ohms or greater.
5
Zero & Span (FS) output factory set to within ±50mV (±25 mV for optional accuracies).
Thermal Eects
2
Position Eect
3
Electrical Data (Current)
Compensated Range ºF (ºC) 0 to +150 (-18 to +65) Range Zero Oset (%FS/G) Circuit 2-Wire
Zero Shift %FS/100ºF(50ºC) ±0.033 (±0.06)
To 0.5 in. W.C. 0.60
Output
6
4 to 20 mA
7
Span Shift %FS/100ºF(50ºC) ±0.033 (±0.06) To 1.0 in. W.C. 0.50 External Load 0 to 800 ohms
Max. Line Pressure 10 PSI To 2.5 in. W.C. 0.22 Min. Loop Supply Voltage (VDC) 9 + 0.02 x (resistance of receiver plus line)
Overpressure Up to 10 PSI (range depedent) To 5.0 in. W.C. 0.14 Max. Loop Supply Voltage (VDC) 30 + 0.004 x (resistance of receiver plus line)
Long Term Stability 0.5% FS/YR
3
Unit is factory calibrated at 0g eect of vertical
position.
Bidirectional output at zero pressure 12 mA
Warm-Up Shift ±0.1% FS Total
6
Calibrated at factory with a 24 VDC loop supply voltage and a 250 ohm load.
7
Zero & Span (FS) output factory set to within ±0.16 mA (±0.08 mA for optional accuracies.).
1
RSS of Non-Linearity, Non-Repeatability and Hysteresis
2
Units calibrated at nominal 70ºF. Maximum thermal error computed from this datum.
Pressure Media Environmental Data
Typically air or similar non-conducting
gases.
Temperature
NOTE: Setra quality standards are based on ANSI-Z540-1. The calibration of this product is NIST
traceable.
Operating ºF (ºC)8 0 to +150 (-18 to +65)
U.S. Patent Nos. 5442962, 6019002, 6014800 and
other Patents Pending.
Storage ºF (ºC) -40 to +185 (-40 to +85)
Specications subject to change without notice
8
Operating temperature of the electronics only. Pressure media temperatures may be considerably higher or lower.