Model 2640 pages

800-257-3872
159 Swanson Rd., Boxborough, MA 01719/Telephone: 978-263-1400/Fax: 978-264-0292
U.S. Patent nos. 4093915; 4358814; 4434203; 6019002; 6014800.
Other Patents Pending.
Model 264
Very Low Differential Pressure Transducer
Unidirectional Ranges: 0 - 0.1 to 0 - 100 in. W.C.
Bidirectional Ranges: 0 - ±0.5 to 0 - ±50 in. W.C.
Air or Non-Conducting Gas
NOTE: Setra quality standards are based on ANSI-Z540-1.
The calibration of this product is NIST traceable.
Visit Setra Online:
http://www.setra.com
The Model 264 utilizes an improved all
stainless steel micro-tig welded sensor. The
tensioned stainless steel diaphragm and
insulated stainless steel electrode, positioned
close to the diaphragm, form a variable
capacitor. Positive pressure moves the
diaphragm toward the electrode, increasing
the capacitance. A decrease in pressure
moves the diaphragm away from the
electrode, decreasing the capacitance. The
change in capacitance is detected and
converted to a linear DC electrical signal by
Setra’s unique electronic circuit.
The tensioned sensor allows up to 10 PSI
overpressure (range dependent) with no
damage to the unit. In addition, the parts that
make up the sensor have thermally matched
coefficients, which promote improved
temperature performance and excellent long
term stability.
Applications
œ Heating, Ventilating and
Air Conditioning (HVAC)
œ Energy Management
Systems
œ Variable Air Volume and
Fan Control (VAV)
œ Environmental Pollution
Control
œ Lab and Fume Hood Control
œ Oven Pressurization and
Furnace Draft Controls
Features
¡ Up to 10 PSI Overpressure
(Range Dependent)
¡ Installation Time
Minimized with Snap Track
Mounting and Easy- To-
Access Pressure Ports and
Electrical Connections
¡ 0 to 5 VDC or 2-wire 4 to
20 mA Analog Outputs Are
Compatible with Energy
Management Systems
¡ Reverse Wiring Protection
¡ Internal Regulation Permits
Use with Unregulated DC
Power Supplies
¡ Fire Retardent Case
(UL 94 V-0 Approved)
¡ Meets CE Conformance
Standards
Setra Systems 264 pressure transducers
sense differential or gauge (static)
pres sure and convert this pressure
difference to a proportional electrical output
for either unidirectional or bidirectional
pressure ranges. The 264 Series is offered
with a high level analog 0 to 5 VDC or 4 to
20 mA output.
Used in Building Energy Management
Systems, these transducers are capable of
measuring pressures and fl ows with the
accuracy necessary for proper building
pressurization and air fl ow control.
The 264 Series transducers are available for
air pressure ranges as low as 0.1 in. W.C. full
scale to 100 in. W.C. full scale. Static standard
accuracy is ±1.0% full scale in normal ambient
temperature environments, but higher
accuracies are available. The units are
temperature compensated to 0.033% FS/oF
thermal error over the temperature range of
0oF to +150oF.
3-year
Unconditional
Warranty
HIGH OVERPRESSURE
CAPABILITY
Up to10 PSI
GUARANTEED
3 DAY
SHIPMENT
FOR STANDARD PARTS
(less than 10 pieces)
When it comes to a product to
rely on - choose the Model 264.
When it comes to a company to
trust - choose Setra.