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SENTRY Compressed Air Monitor and Alarm
Brand: Edgetech InstrumentsThe Edgetech Instruments SENTRY turn-key measurement and alarm system features a smart multi-sense probe that continuously monitors the dew/frost point and pressure of compressed air systems to detect compressor or dryer failures and system pressure leaks.
The SENTRY features a strobe lamp and pulsing horn plus an alarm relay contact that activate when a programmable, low pressure or high dew/frost point alarm trip point is detected.
Either condition triggers the alarms. It also has a local display of the measured pressure and dew/frost point of the compressed air system plus 4 to 20 mA analog outputs, one each for measured pressure and dew/frost point at atmospheric pressure.
The SENTRY is a complete system, ready for out-of-the-box installation.
All Edgetech Instruments dew/frost point monitors are manufactured and supported in the USA in a modern, ISO 9001:2015 registered facility with ISO/IEC 17025:2005 accredited calibration laboratory.
Features- Detects upset conditions in compressed air systems
- Constantly monitors pressure and dew/frost point temperature
- Strobe lamp and pulsing audible alarms for low pressure or high dew/frost point alert
- Displays dew/frost point and pressure on panel meter
- NIST traceable calibration certificate
- Field replaceable Smart Sensor Tip
- Alarm relay and 4 to 20 mA outputs
- Complete system, ready for installation
Specifications
Brand
Models
- SENTRY 85: Provides strobe lamp and 85 dB pulsing audible alarm when high dew/frost point or low pressure condition is detected
- SENTRY 100: Provides strobe lamp and 100 dB pulsing audible alarm when high dew/frost point or low pressure condition is detected
Measuring Range (HPP125 Sensor Probe)
- Standard Dew/Frost Point: -40° C to +95° C (-40° F to 203° F)
- Low Dew/Frost Point: -60° C to +95° C (-76° F to 203° F)
- Pressure: Up to 400 psia (0 to 27.6 bar)
Accuracy
- Dew/Frost Point: ± 1° C for -10° C to 95° C and ± 2° C for -60° C to -10° C
- Pressure: At 25° C, ± 1 mbar from 600 to 1200 mbar, over -40° C to +125° C range, ± 5 mbar
General
- Enclosure: IP65 water resistant/dust tight
- Dimensions: 5 in H x 5 in W x 4 in D (127 mm H x 127 mm W x 102 mm D)
- Weight: 3 lb (1.4 kg)
- Display: 2 Line LCD display of pressure and dew/frost point, LED Backlit
- Operating Temperature: 32° F to 122° F (0° to 50° C)
- Smart Sensor Probe: Connected to control module via 1 meter cable with quick connect
- Sample Connection: 1/2” Male NPT pipe fitting, Optional 3/4” or 1” male NPT pipe fitting
- Sample Pressure: Up to 400 psia (27.6 bar)
Power & Outputs
- Power: 90 to 230 Vac ± 10 %, 50 to 400 Hz, 3 meter power cord provided
- Analog Outputs: Two, 4-20 mA outputs: Pressure of compressed air at sensor probe in psia
- Dew/frost point at 1 atmosphere pressure Alarm Relay, 1 Form C, 3 A at 250 Vac, Alarm mode is low pressure or high dew/frost point
Accessories
- CAM: Compressed Air Module sample chamber for probe, provides sample flow to sensor probe, includes a ball valve to isolate the probe from the pressurized air source during service, 3/4 inch NPT female pipe threaded port to compressed air system take-off point
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