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Series A3
Digital Differential Pressure Gauges

Series A3 Digital Differential Pressure Gauges

The series A3 is a patent pending microprocessor based controller for positive, negative, and differential pressure as well as velocity and flow. The Series A3 includes (2) 8A SPDT relays and an associated software package that allows full configuration of variables such as setpoints, dead band, engineering units, flow coefficients, and more. The programming is done from a user friendly menu on the LCD display or uploaded using an Opti optilinkLinkô programming key. The LCD also displays the exact setpoints or other user defined variables during normal operation. Furthermore, the menu structure can be customized by moving variables to different menu levels to accommodate many applications. Compared to other mechanical products, the Series A3 has a significantly reduced depth, an improved look, and better performance at a lower price.

PDF File DATA SHEET PDF File INSTALLATION MANUAL
Specifications
Maximum Pressure: 4" w.c. and less = 2 PSI; 5" w.c. and above = 10 PSI
Media compatibility: Air and compatible non combustible, non corrosive gasses
Accuracy: Axxx0-xx - 1.00%; Axxx1-xx - 0.50%

Temperature Ranges:
Compensated and Operating:

-10° to 140°F (-23° to 60°C)
Thermal Effect*: +/- 0.012% FS/°F
Output Signal: 4-20 mA (option)
Loop Resistance:

750 Max (for internally sourced power)
1800 Max (for externally sourced power of 36 VDC)

Power Supply: Universal 16-265 VAC or VDC
Housing Material: Glass Filled Nylon
Enclosure Rating: Designed to meet NEMA 4X face; with optional
cover the entire product is weatherproof
Relays: (2) SPDT 8 Amps @ 250 VAC, 5A @30 VDC
Electrical Connections: screw terminals
Response Time: <100 ms
Display: 4 Digit, red LED, ½" digits ; LCD programming display
Process Connection: Push on connection for 3/16" tubing
Agency Approvals: Pending - UL, C-UL, CE
Dimensional Drawings
series S2000 - Dimesional Drawing
Gauge
 
Gauge with Weather-proof Cover
 
EXAMPLE
A
1
0
1
0
-
03
Description
Model
A
Round Panel Mount Housing
Display
1
LED display
2
LED display, process arch
3
LED display, process arch, and LCD
4
LED display, process arch, and OLCD
Function
0
Indication only
1
Control 2 SPDT relays (A3 or A4 only)
Transmitter
0
None
1
4-20 mA
Accuracy
0
1%
1
0.50%
2
0.25%
Range
-
01
0 - 0.5"
-
02
0 - 1"
-
03
0 - 2"
-
04
0 - 3"
-
05
0 - 4"
-
06
0 - 5 "
-
07
0 - 8 "
-
08
0 - 10 "
-
09
0 - 15 "
-
10
0 - 20 "
-
11
0 - 30 "

 


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