PTH60 Probe-Type Oil Dissolved Water Content Transmitter

In the lubricant system, the oil parameters such as particle in oil, turbidity and dissolved water content are directly related to the wear degree and mechanical life of the gear. In addition, the dissolved water content of the transformer insulating oil determines the insulation performance; if the dissolved water in the oil seriously exceeds the standard, at least the insulation performance degrades, and worst of all the transformer produces arc, which will damage the equipment and cause serious accidents.

      PTH60 Probe-Type Oil Dissolved Water Content Transmitter can monitor the dissolved water content of various labels of lubricants, transformer oils and most oil products. The humidity-sensitive element of its probe is a hydrophilic and high molecular humidity-sensitive capacitor, together with PT1000 temperature-sensitive element, which can provide temperature compensation to ensure accurate measurement. The probe uses a small package to facilitate to install on the equipment, and the pore filter is used to buffer the fluid and protect the sensitive element.

Technical Features

Output signal: 4 ... 20mA or RS485

   Filter: pore filter

Shell Material: 316 stainless steel

Temperature range: -40 ... 80℃


Typical Applications

Lubricant

Monitoring of dissolved water in transformer oil and other mineral oils


Technical Data

Input and output

Operating voltage

24V DC ±20%

Current output

4 ... 20mA  RL < 500 Ohm

Power consumption

< 30mA (current output)

Channel precision: ±0.2%FS

<15mA (digital output)

Digital output

RS485 (Modbus RTU)

Measurement Parameter

Relative humidity

  

Temperature

Measurement range 

... 1aw

Measurement range 

−40 … +80°C

Measurement precision

±0.02 (0 … 0.9aw & 20℃)

Measurement precision 

±0.2°C

Calibration error

±0.005aw (0 … 0.9aw)

Calibration error

±0.1°C (20°C)

±0.008aw (0.4 … 0.95 aw)

τ63 response time

10mins (in immobile oil)

- -

- -

Humidity sensitive element

High molecular polymer humidity-sensitive capacitor

Temperature sensitive element

Pt1000 (Grade 1/3B, DIN EN 60751)






The above precisions are comprehensive precisions, including repeatability, linearity and hysteresis of the measurement, and can be traced to the CNAS standard.

Technical Specification

Wiring connection

The maximum cable diameter of the terminal is  1.0mm2

Operating temperature

Circuit: -20 ... 60℃

Shell material

316 stainless steel

Probe: -40 ... 80℃

Cable connector

8 core thread joint

Storage temperature

-20 ... 60℃

Probe protection

Stainless steel pore filter

Electromagnetic compatibility

EN61326-1  EN61326-2-3

Protection grade

IP65



Data download: 

PTH60 Probe-Type Oil Dissolved Water Content Transmitter Product Manual



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