ACI
Product Data
Automation Components, Inc.
Uni-Directional Low Differential Pressure Transmitter
Features
* AC/DC Power
* 4-20mA, 0-5VDC, and 0-10 VDC Outputs
* +/- 1% FSO Accuracy
* Easy Installation, Polarity Sensitive
* 2 Year Warranty
PS-27Px Series
Product Description
The PS-27Px Series low differential pressure
transmitters are offered in ranges from
0 to 0.25” up to 0 to 10” WC (Water Column). Each
pressure transmitter uses a high quality, variable
capacitive pressure sensor in each of the units.
Variable capacitance sensors have a good signal to
noise ratio and are not plagued by temperature drift.
The transmitters can be powered by a regulated, +15
to 36 VDC or 24 VAC supply voltage, and the units
are polarity sensitive. The pressure transmitters will
provide a linear output signal using a two or three-wire
configuration, depending on the model number of the
unit being ordered. The overall accuracy of the unit is
+/- 1% of the Full Scale Output (FSO) over the
compensated temperature range.
When used in combination with a pitot tube or orifice
plate, flow can be measured and controlled in ducts or
plenums. The PS-27Px Series pressure transmitters
use a durable and proven sensor technology to provide
lengthy and stable performance.
The PS-27Px Series pressure transmitters may be used
in many different applications including:





Static Pressure Control
Monitoring Filter Blockage
Pneumatic Controls
Variable Air Volume Systems (VAV’s)
Monitoring Air Flow
All PS-27Px Series low differential pressure
transmitters are factory calibrated using an NIST
Traceable manometer with a five year warranty. For
more information regarding any of these products,
please contact ACI at the numbers listed below, or
visit our website at www.workaci.com.
Product Specifications
Supply Voltage
Input Pressure
Ranges
Output Ranges
Accuracy
Linearity
Response Time
250 Ohm Load: +15 to 36 VDC / 24 VAC
500 Ohm Load: +19 to 36 VDC / 24 VAC
0 - 0.25” WC, 0 - 0.5” WC, 0 - 1” WC,
0 - 2” WC, 0 - 3” WC, 0 - 5” WC, 0 - 10” WC
PS-27xx-AT-D1-AA Series: 0 to 10 VDC*
PS-27xx-AT-D5-AA Series: 0 to 5 VDC*
PS-27xx-AT-MA-AA Series: 4 to 20 mA*
+/- 1% FSO
+/- 0.5% of Span
15 msec for a 63% Full Scale Step change
Operating Temperature
Range
Compensated
Temperature Range
Temperature Error
Zero
Span
Position Effect
Connections
Pressure Fittings
14 to 140 °F (-10 to 60°C)
50 to 104°F (10 to 40°C)
Span < 2” WC
Span > 2” WC
+/- 3.0% FSO
+/- 1.5% FSO
+/- 4.0% FSO
+/- 1.5% FSO
2% Null shift from vertical to horizontal
Screw Terminals, 18-22 AWG wires
¼” Brass Barbed Fitting (Accepts 3/16”
(0.476 cm) I.D. poly tubing
UL94V-0 / Black
Pressure Overload
Enclosure Rating/Color
Positive Pressure
5X
Negative Pressure
3X
* The Series PD, PE, PF, PG, PH, PI, and PJ may be included in place of the xx in the model number. See next page.
2305 Pleasant View Rd.  Middleton Industrial Park  Middleton, WI 53562
PH: (608) 831-2585  FAX (608) 831-7407
www.workaci.com
Filename: C0000011 Rev 8
Dimensions
0.53” (13.46 mm)
(4) 0.19” (4.83 mm)
Mounting Holes (Ref)
ALERTON
R
Technical Support
Phone: (608) 831-2585
Fax: (608) 831-7407
(2) ¼” Brass Barbed
Fittings
5.77”
(146.56 mm)
Pressure Transmitter
Model: PS-27Px Series
Input: 24 VAC/+15-36 VDC
Range: 0 to x.xx” WCD
Output: x to xx xxx
1.88”
(47.75 mm)
Lo (Front)
L
HI
HI
3.12”
(79.25 mm)
3.66”
(92.96 mm)
2.25”
(57.15 mm)
Ordering Information
Alerton Model Number
PS-27PD-AT-D5-AA
PS-27PD-AT-D1-AA
PS-27PD-AT-MA-AA
PS-27PE-AT-D5-AA
PS-27PE-AT-D1-AA
PS-27PE-AT-MA-AA
PS-27PF-AT-D5-AA
PS-27PF-AT-D1-AA
PS-27PF-AT-MA-AA
PS-27PG-AT-D5-AA
PS-27PG-AT-D1-AA
PS-27PG-AT-MA-AA
PS-27PH-AT-D5-AA
PS-27PH-AT-D1-AA
PS-27PH-AT-MA-AA
PS-27PI-AT-D5-AA
PS-27PI-AT-D1-AA
PS-27PI-AT-MA-AA
PS-27PJ-AT-D5-AA
PS-27PJ-AT-D1-AA
PS-27PJ-AT-MA-AA
Pressure Range
0 to 0.25” WC
0 to 0.25” WC
0 to 0.25” WC
0 to 0.50” WC
0 to 0.50” WC
0 to 0.50” WC
0 to 1.00 WC
0 to 1.00 WC
0 to 1.00 WC
0 to 2.00 WC
0 to 2.00 WC
0 to 2.00 WC
0 to 3.00 WC
0 to 3.00 WC
0 to 3.00 WC
0 to 5.00 WC
0 to 5.00 WC
0 to 5.00 WC
0 to 10.00 WC
0 to 10.00 WC
0 to 10.00 WC
Output Range
0 to 5 VDC
0 to 10 VDC
4 to 20 mA
0 to 5 VDC
0 to 10 VDC
4 to 20 mA
0 to 5 VDC
0 to 10 VDC
4 to 20 mA
0 to 5 VDC
0 to 10 VDC
4 to 20 mA
0 to 5 VDC
0 to 10 VDC
4 to 20 mA
0 to 5 VDC
0 to 10 VDC
4 to 20 mA
0 to 5 VDC
0 to 10 VDC
4 to 20 mA
These units are manufactured for Alerton by Automation Components, Inc.
2305 Pleasant View Rd.  Middleton Industrial Park  Middleton, WI 53562
PH: (608) 831-2585  FAX (608) 831-7407
www.workaci.com
Filename: C0000011 Rev 8