Features/Benefits:
· Continuous and measurement of moisture in oil
· Measures in lubrication, hydraulic and transformer oils
· Excellent pressure and temperature tolerance
· Measures water activity - ppm-calculation available for transformer oil
· Small size, easy to integrate
· Convenient local & remote calibration
· IEC61010-1 traceable calibration (certificate included)
Reliable CST Technology:
The sensor is developed for demanding moisture measurement in liquid hydrocarbons and has been successfully used in oil applications for over a decade. The sensor's excellent chemical tolerance provides accurate and reliable measurement over the measurement range.
Water Activity Measurement:
The CST measures moisture in oil in terms of the water activity (aw) and temperature (T). Water activity directly indicates whether there is a risk of free water formation. The measurement is independent of oil type, age and temperature. The ppm calculation for mineral oil based transformer oil is optional in the OMT300.
Specifications:
Measured Values | ||||
Water activity | ||||
Measurement range | 0 ... 1 aw | |||
Accuracy (including non-linearity, hysteresis and repeatability) | ||||
0 ... 0.9 | ±0.03 | |||
0.9 ... 1.0 | ±0.05 | |||
Response time in oil flow (typical) | <1min (dry-wet) | |||
Moisture | Calculated moisture content in ppm for mineral transformer oil | |||
Temperature | ||||
Accuracy at +20℃(+68℉) | ±0.3℃(0.54℉) | |||
Operating Environment | ||||
Operating temperature | -40 ... +60℃ (-40 ... +140 ℉) | |||
Oil temperature | -40 ... +80 ℃ (-40 ... +176℉) | |||
Pressure range:up to 20 bar | ||||
Oil flow | some flow recommended | |||
Outputs | ||||
Analog outputs (two channels) | ||||
current output | 0 ... 20 mA, 4 ... 20 mA | |||
voltage output | 0 ... 5 V, 0 ... 10 V | |||
Digital outputs | RS-485/RS232 | |||
General | ||||
Housing material: AISI 316L | ||||
Weight | 220g | |||
Total weight | 350g | |||
Protection grade | IP66 | |||
Mechanical connections with bonded seal ring (washer) | ||||
metal version | G 1/2'' ISO or NPT 1/2'' | |||
Supply voltage | DC24V±20% | |||
Supply current | <40mA | |||
Package size | 172*117*53mm | |||
Cable specification | M8 4 cores shielded 2m | |||
Standard applied | IEC61010-1 | |||
