Product specifications

Phone: [phone] • Fax: [phone] • setra.com ©2014 Setra Systems, Inc. All rights reserved. The Setra Systems name and logo are registered trademarks of Setra Systems, Inc.
DIFFERENTIAL PRESSURE
18
Model 269
ential Pressure Transducer

■ Installation Time Minimized with DIN Rail
Mounting and Easy- To-Access Pressure Ports
and Electrical Connections
■ Removable Process Head Eliminates the Need
to Cut Tubes for Easy Installation
■ 
Remain In-Situ During Calibration
■ 
Span Adjustments
■ 2-wire 4 to 20 mA Analog Outputs Compat-
ible with Energy Management Systems
■ 
■ Internal Regulation Permits Use with Unregu-
lated DC Power Supplies
■ 
■ Calibration Certs. Available
■ 2:1 Turndown Ratio Available
■ Meets CE Conformance Standards
APPLICATIONS
■ Critical Environments
■ Clean Rooms
■ Isolation Rooms
■ Room Pressure Monitoring
■ Environmental Pollution Control

The calibration of this product is NIST traceable.
U.S. Patent nos. 6019002; 6014800
DESCRIPTION
The Model 269 is a very low dierential pressure transducer of-
fering enhanced accuracies including non-linearity of 0.15%
and 0.35% full scale, terminal-based for improved resolution in
critical environments.
The ultimate solution for in-situ pressure calibration, the Model
269 is provided with a removable process head, allowing for
eld certication without disturbing the process tubing. Simply
-
tion Security Key and verify the performance with its “snap-

Installation is simplied with either the base mount or din rail
easy mount design, and a removable electrical terminal strip
that makes wiring a breeze.
SPECIFICATIONS
Position Eect Performance Data Environmental Data
Range (%FS/G)
Accuracy Class (FS) Code V E G Operating Temperature °F (°C) -20 to +160
Unit is factory calibrated
at 0g eect in the verti-
cal position
To 1.0 in. WC 2.50
(at constant temp.) ±20.5% ±0.50% ±1.00% Storage Temperature °F (°C) -40 to +185
To 0.5 in. WC 1.00
Non-Linearity (Terminal) ±0.15% ±0.35% ±0.75%
Electrical Data (Current)
To 1.0 in. WC 0.50
(BSFL based) ±0.10% ±0.25% ±0.55% Circuit 2-Wire
To 2.5 in. WC 0.22
Non-Repeatability ±0.05% ±0.05% ±0.10% Output
2
4 to 20mA
To 5.0 in. WC 0.14
Zero Setting Tolerance ±0.05% ±0.05% ±0.05% Bidirectional output at zero pressure 12mA
Physical Description
Span Setting Tolerance 16±.04mA 16±.08mA 16±.12mA External Load 0 to 800 ohms
Case Fire-Retardant ABS
Thermal Eects
1
Minimum Supply Voltage (VDC) 13.5 + 0.02 x (Resistance of receiver plus line)
Mounting Base Mount or 35mm DIN Rail
Compensated Range °F 20 to +140 Maximum Supply Voltage (VDC) 30 + 0.004 x (Resistance of receiver plus line)
Electrical Connection Detachable Screw Terminal Strip
Zero/Span Shift %FS/°F 0.01% 0.02% 0.02%
Pressure Media
Pressure Fittings
3/16” O.D Barbed Brass Fittings
on Removable Process Head
Maximum Line Pressure 10 pis Typically air or similar non-conducting gases.
Zero/Span Adjustments External Security Key
Overpressure Up to 2 psi (Range Dependent)
1
Units calibrated at nominal 70˚F. Maximum thermal error computed from this datum.
2
Calibrated at factory with a 24 VDC loop supply voltage and a 250 ohm load.
Specications subject to change without notice.
Long Term Stability 0.5% FS/1 YR