PR-20 Pneumatic Pressure Indicator
HIGH ACCURACY READINGS
RANGES UP TO 10000 KPA
EASY TO USE
The PR-20 is a pneumatic pressure indicators designed to read pneumatic piezometers
The PR-20 portable readouts are mounted in a strong watertight case that contains all the circuitry for reading the transducers, and for refilling the self-contained nitrogen-gas cylinder.
The circuitry consists of the following:
- A nitrogen-gas filled cylinder with a maximum pressure of 14 000 kPa. The cylinder pressure is indicated by a pressure gauge
- A pressure regulator, with the maximum regulated pressure adjusted in the factory to equal the upper limit of the main readout pressure gauge
- An automatic constant low-flow control valve that gives precise and highly repeatable results (available only below the 0–1000 kPa measurement range)
- Either a 105 mm diameter test gauge (model PR-20) featuring an anti-parallax mirror, or a high-precision digital test gauge (model PR-20D)
- A high-flow circuit, for the quick filling of the transducer tubing leads
Reading and Interpretation:
The same circuitry is used in both readout units. The only difference is in the test gauge: the PR-20 has a dial gauge while the PR-20D has a digital gauge. Readings are taken once the transducer tubings are filled with gas and the pressure has stabilized.
Specifications
| MODEL | PR-20 | PR-20D |
| Range | From 200 to 10 000 kPa | From 200 to 10 000 kPa |
| Accuracy | ±0.25% F.S. | ±0.05% to ±0.25% F.S. |
| Resolution | Gauge-dependent | Gauge-dependent |
| Maximum pressure | 1 × F.S. | 1.5 × F.S. |
| Operating temperature | −20 to +60°C | Gauge-dependent |
| Dimensions | 45 × 30 × 18 cm | 45 × 30 × 18 cm |
| Weight | 9 kg | 9 kg |
Ordering Info
Please specify:
- Model
- Range
