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Oil moisture transmitter PPM-HLW-2A

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Oil moisture transmitter PPM-HLW-2A

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Number of views:

1000

Product serial number

PPM-HLW-2A

Category

Import Series

Product classification:

Other

Process interface:

Other

Output form:

Other,R485

power supply:

Accuracy:

Electrical interface:

Contact medium:

oils

ambient temperature:

Medium temperature:

（-20—80）℃

IP protection class:

IP65

explosion-proof:

Other

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Product description

Background

Moisture in lubricating oil and hydraulic oil will destroy the oil film, cause additives to fail, cause corrosion of metal parts, shorten the service life of oil, and even cause unplanned shutdown of large machinery, resulting in serious safety accidents and economic losses.

For generator sets and transformers, moisture will destroy the insulating properties of oil, posing a threat to the safety of power equipment and personnel.

Description

The PPM-HLW-2A oil moisture sensors adopts advanced water content sensitive element and temperature sensitive element, it can measure water content, water activity and temperature in harsh environment continuously, accurately, fast.

Measuring : lubricant oil, hydraulic oil, engine oil, fuel, insulating oil, turbine oil, etc.

Application: monitoring the moisture content of lubricating oil and hydraulic oil in large continuous operation equipment, heavy machinery equipment and other equipment

Moisture in oil transmitter’s Measurement Metrics

Measurement Index	Range	Resolution	Measurement Accuracy
Temperature	0~100℃	0.1℃	±0.3℃（25℃）
water activity	0～1aw	0.001aw	±0.02aw ( 0～0.6)
			±0.03aw (0.6～0.9)
			±0.04aw (0.9～1)
Moisture content	0～1000ppm	1ppm	±10%
The water content range can be customized within the range of 100-2000ppm.

Note: The sensor is calibrated by 25# transformer oil by default (can be customized for oil sample calibration).The measurement accuracy needs to ensure that the test environment is at 20±5℃ and the flow rate is 30±5ml/min within the range.

Technical parameters

Technical indicators	Parameters
Digital output	RS485 MODBUS RTU (default)
Analog current output	4～20mA (optional)
Refresh time	1 time/S (boot<30S)
Operating Voltage	DC12～32V（RS485） DC20～32V（4～20mA）
Working current	<20mA (RS485 output) <40mA (4～20mA output)
Working temperature	-30～70℃
Fluid temperature	20～85℃
Storage temperature	-40～85℃
Probe allowable pressure	≤ 1MPa
The allowable flow rate of the probe	≤0.5 m/s
Protection	IP65
Probe materia	316 stainless steel
Threaded interface	External thread G 1/2”
Electrical interface	M8*1, 6-core aerial plug
Weight	120g
Standard	EN61326‐1, EN61326‐ 2‐3 ICES‐003 Class B
Applicable oil	Commonly used mineral oils, synthetic and semi-Synthetic lubricating oil, hydraulic oil, variable compressor oil, etc.

Features of The PPM-HLW-2A oil moisture sensors

1. Continuous and rapid detection of water activity (aw) in oil;

2. Accurately measure trace water content (ppm) in oil;

3. Long-term stable operation in harsh environments;

4. Convenient local calibration function;

5. High oil resistance and pressure resistance;

6. Compact structure, easy to integrate;

7. Multiple modes of signal output.

Product Structure Diagram

Installation instructions

The PPM-HLW-2A oil moisture sensors should be installed from top to bottom, make sure the probe passes through the pipeline . For the core wire, it is recommended to use an extended probe or an adapter when installing with a large pipe diameter. The tube brings the probe across the midline.