KT-300 Moisture in Oil Sensor

Unique Features Specification Option & Parts Order Info Unique Features

• 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

Specification

Water activity
Measurement range	0 … 1 aw
Accuracy	0 … 0.6:  ± 0.02 aw
	0.6 … 0.9: ± 0.03 aw
	0.9…1: ±0.04 aw
Resolution	0.001 aw
Response time (typical)	< 1 min
Water in oil
Measurement range	0…100ppm, 500ppm, 1000ppm, 2000ppm or customized
Accuracy	±10% or 10ppm (choose the higher one)
Temperature
Measurement range	-40 … 120 °C
Accuracy (at +25 °C)	± 0.2 °C
Working temperature	-40 … +80 °C
Storage temperature	-40 … +80 °C
Oil temperature permitted	-40 … +120 °C
Output
Digital signal	RS485 MODBUS RTU
Analog signal	4~20mA, resistive load 500Ω
Others
Housing material	316 stainless steel
Weight	200g (transmitter), 270g(package)
Package size	172×117×53 mm carton
Ingress Protection	IP66
Mechanical connections	G 1/2″ ISO or 1/2″ NPT
Pressure range	Max 100 bar (confirm with Kongter for other ranges)
Resistance load	200 … 500 Ω
Supply voltage	DC 9V-36V(RS485 communication), DC15V-36V(@4-20mA)
Supply current	<5mA+load current
Cable specification	M8*1, 6 pin
Cable length	2 m
Standard applied	CE certified, EN61326-1，EN61000-3，EN61010 class B

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 light
Display and control unit: KT-200D (optional)

Order Info

KT-300 Moisture in Oil and Temperature Transmitter
Measurement parameters	aw + T	A
	ppm + T 1)	B
	aw + ppm + T 1)	C
Signal output	4-20mA + RS485			1
	0-20mA + RS485			2
	0-5V + RS485			3
	RS232			4
Analog output channel 1	0 … 1 aw				D
	0 … 100 ppm				E
	0 … ___ ppm				F
Analog output channel 2	‐40 … 120°C					5
	___ … ___°C					6
Mechanical connector	1/2” NPT						H
Cable length	2 meters							7
	3 meters							8

• ppm is only applicable to mineral transformer oil. If you need to measure ppm value in other oil, please contact us.

Example for order: KT-300 B1E5H7
Measurement parameters: ppm + T                 
Signal output: 4‐20mA + RS485 
Ppm range: 0 … 100 ppm 
Temperature range: ‐40 … 120°C
Mechanical connections: 1/2” NPT
Cable length: 2 meters

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