Key Performance
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Stability: ±0.25% FS/year
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Output Signal: 4–20 mA, 2-wire
Product Introduction
The A4 Series Differential Pressure Transmitter is designed for accurate measurement of positive, negative, or differential pressure.
It is not position-sensitive, allowing installation in any orientation without affecting accuracy.
Its compact and lightweight design makes installation simple and convenient, especially in space-limited applications.
Specifications
Pressure
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Maximum Pressure:
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Ranges ≤ 5 PSI: Max 15 PSI
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Ranges > 5 PSI: Max 30 PSI
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Media Compatibility
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Air and compatible non-combustible, non-corrosive gases
Accuracy
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Ranges ≤ 4″ w.c.: 1.0% FS
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Ranges ≤ 5″ w.c.: 0.5% FS or 0.25% FS (optional)
Temperature
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Compensated Range:
15°F to 120°F (-10°C to 50°C) -
Operating Range:
-10°F to 155°F (-25°C to 70°C)
Thermal Performance
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Thermal Effect: ±0.028% FS/°F
Electrical
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Output Signal: 4–20 mA, 2-wire
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Loop Resistance: 250 Ω @ 24 VDC
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Power Supply: 12–30 VDC
Mechanical
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Housing Material: ABS Plastic
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Electrical Connection: Screw terminals
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Process Connection: Push-on connection for 1/8″ I.D. tubing
Order Information – Available Models & Ranges
Unidirectional Models
| Model No. | DP Range |
|---|---|
| A4-125Pa | 0 ~ 125 Pa |
| A4-250Pa | 0 ~ 250 Pa |
| A4-500Pa | 0 ~ 500 Pa |
| A4-1KPa | 0 ~ 1 kPa |
| A4-2.5KPa | 0 ~ 2.5 kPa |
| A4-7KPa | 0 ~ 7 kPa |
| A4-35KPa | 0 ~ 35 kPa |
| A4-100KPa | 0 ~ 100 kPa |
| A4-200KPa | 0 ~ 200 kPa |
Bidirectional (±) Models
| Model No. | DP Range |
|---|---|
| A4/Z-120Pa | ±60 Pa |
| A4/Z-250Pa | ±125 Pa |
| A4/Z-500Pa | ±250 Pa |
Zero-Based Z Models
| Model No. | DP Range |
|---|---|
| A4/Z-1KPa | 0 ~ 1 kPa |
| A4/Z-2.5KPa | 0 ~ 2.5 kPa |
| A4/Z-100KPa | 0 ~ 100 kPa |
| A4/Z-200KPa | 0 ~ 200 kPa |
