Edgetech Instruments PPM1 Trace Moisture Analyzer (1250 ~ 0.1 ppmv)
Sensor Type: Electrolytic phosphorous pentoxide (P₂O₅) on ceramic wafer
Measuring Range
Trace Moisture: 1250 to 0.1 ppmv
Dew/Frost Point: -20°C to -95°C
Accuracy & Response
Accuracy: ±5% of ppmv reading
Response Time: 90% of step change in one minute (typical)
Hysteresis: None
General Features
Display: 2-line LCD, backlit
Operating Temperature: 32°F to 122°F (0°C to 50°C)
Sample Connection: 1/4” compression fitting (standard model for positive pressure)
Sample Flow Rate: 0.5 to 5 SCFH, regulated
Sample Pressure: 0 to 200 psig, regulated
Sensor Housing: 316 stainless steel, flow-through head, 1/4” compression fittings (VCR optional)
Sampling Options: Configurable for diffusion sampling (glove box or isolation chamber)
Power & Outputs
Power: 18 to 30 VDC, unregulated, 1 A max
Outputs:
Analog: Two 4-20 mA, scalable by user
Alarm: Two dry alarm relays, FORM A, adjustable by user
Digital: RS-232 serial, bi-directional
Weights & Dimensions
Weight: 4 lb (1.81 kg)
Environmental Protection: Plastic IP66/67, NEMA 4 case
Dimensions (L × W × D): 5.1” × 3” × 5.1” (13 cm × 7.6 cm × 13 cm)
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