SERIES A1  Digital Differential Pressure Gauge

§  Mounts in Industry Standard Holes

§  Universal Power 24 – 240 VAC/VDC

§  Optional 4 – 20 mA output

§  Accuracy 1.0%, 0.5% or 0.25%

§  Large LED Display

The Series A1 digital differential pressure gauge is a patented microprocessor based digital

pressure gauge for positive, negative, and differential measurement designed to be a direct

replacement for mechanical gauges. The Series A1 differential pressure gauges utilize an

extremely stable piezoresistive sensing technology to give a standard full scale accuracy of 1%.

For applications requiring better accuracy, the A1 is available with 0.5% or 0.25% accuracy.

The A1 pressure gauge has an optional 4-20 mA output for applications requiring an output

signal. The A1 features a bright ½” LED display, which gives the gauge improved readability

and precision. The A1 digital differential pressure gauges also feature 5 user selectable engineering

units including in.w.c., mm w.c., cm w.c., kPa, and Pa. The Series A1 offers an improved look,

and performance compared to mechanical gauges.

Specifications

Maximum Pressure:

Ranges -00 to -07 = 2 PSI (13.8 kPa)

Ranges -08 to -12 = 10 PSI (68.9 kPa)

Media Compatibility: Air and compatible

non-combustible, non-corrosive gasses

Accuracy: 1.0%, 0.5% or 0.25%

Temperature Ranges:

Compensated and Operating: -10° to 140°F (-23° to 60°C)

Thermal Effect: +/-0.02% FS/°F

Output Signal: 4-20 mA (option)

Loop Resistance: 750 Ω Max (for internally sourced power); 1800 Ω Max (for externally sourced power

of 36 VDC)

Power Supply: Universal 24 - 240 VAC or VDC

Housing Material: Glass Filled Nylon

Enclosure Rating: Designed to meet NEMA 4X (IP 65) face; with optional cover the entire product

is weather-proof

Electrical Connections: screw terminals

Response Time: <100 ms

Display: 4 Digit, red LED, ½” (12.7 mm) digits

Process Connections: Push on connection for 3/16” (5 mm) tubing

Agency Approvals: CE