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KT-200 Moisture in Oil Transmitter

KT-200 is a fast, reliable and accurate online transmitter for water activity (aw) in oil and temperature (T). It is very suitable for integration in OEM application with its rugged housing and excellent performance.
KT-200 is ideal for online monitoring of moisture in lubrication, hydraulic or insulation oil, which is significant for the long-term performance and preventive maintenance of plant and machinery.



  • Continuous measurement of water activity in oil and temperature
  • Professional calculation of moisture content in ppm for transformer oil
  • Accurate and reliable, robust design under hostile environments
  • Convenient local & remote calibration
  • Excellent pollution & pressure tolerance
  • Compact, easy for integration
  • Analog and Digital Signals Output
Water activity  
Measurement range0 … 1 aw
Accuracy0 … 0.6     ± 0.02
0.6 … 1   ± 0.03
Response time (typical)< 1 min
Water in oil 
Measurement range 1) 0 … 100 ppm (suitable for Mineral transformer oil)
Accuracy ±10% or 10ppm max
Measurement range -40 … 120 °C
Accuracy (at +25 °C)± 0.3 °C
Working temperature-40 … +80 °C
Storage temperature-40 … +80 °C
Oil temperature permitted -40 … +120 °C
Digital signal RS485 MODBUS, RS232 (optional)
Analog signal 4~20mA, resistive load=500Ω 
Housing material 304 stainless steel
Weight220g (transmitter), 270g(package)
Package size172×117×53 mm carton 
Ingress Protection IP66
Mechanical connectionsG 1/2″ ISO or 1/2″ NPT
Pressure range Max 100 bar
Resistance load 250 … 500 Ω
Supply voltageDC 9V-36V, >DC15V ( use 4-20mA)
Cable specification M8 6 pin
Cable length 2 m 
Standard appliedCE certified, EN61326-1 EN61326-2-3 standard
 ICES-003 B

1) other measurement range is optional

Option & Parts
Stainless steel filter
USB-RS485 converter
USB-RS232 converter
Seal washer: ISO G1/2”
Connecting cable: 5m, M8 screw thread, 90°bend angle
              10m, M8 screw thread, 90°bend angle
              2m, M8 screw thread, with LED
PC software: OW600
Display and control unit: KT200D (optional)

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