Measured Values

Water activity
Measurement range
Accuracy (including non-linearity, hysteresis and repeatability)
0 ... 0.9
0.9 ... 1.0
Response time
in oil flow (typical)

Moisture

Temperature
Accuracy at +20 °C (+68 °F)

0 ... 1 aw



± 0.02
± 0.03

<1 min (dry-wet)

Calculated moisture content in ppm for mineral transformer oil


± 0.2 °C (± 0.36 °F)

Operating Environment

Operating temperature
Oil temperature
Pressure range
   metal version
   plastic version
Oil flow

-40 ... +60 °C (-40 ... +140 °F)
-40 ... +80 °C (-40 ... +176 °F)

up to 200 bar
up to 40 bar
some flow recommended

Outputs

Analog outputs (two channels)
   current output
   voltage output
Digital outputs

0 ... 20 mA, 4 ... 20 mA
0 ... 5 V, 0 ... 10 V
RS-485

General

Housing material
   metal
   plastic
Mechanical connections with bonded seal ring (washer)
   metal version
   plastic version

AISI 316L
PPS + 40% GF


G 1/2’’ ISO or NPT 1/2’’
G 1/2’’ ISO

Calibration services

Calibrated quantities
Traceability

relative humidity, temperature
NIST

Calibration services are available at Vaisala service centers for a fixed price.
-Factory calibrations (ISO9001)

Calibration price includes:
-calibration and certificate before adjustment
-adjustment to meet specifications
-calibration and certificate after adjustment
-replacement of wearing parts

Spare parts

Common spare and wearing parts are available. For availability contact sales.

Repair

Repair services are available at Vaisala service centers for a fixed price.

Repair price includes:
-repair work
-required parts
-calibration certificate
-service report

Technical support

Technical support for your installed units, contact helpdesk@vaisala.com.