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SMART WiO
Brand: Rivertrace Limited
The working principle is a capacitive measurement operating on absorption of water in oil. The physical measured value is % Humidity.
New oil has the ability to hold a certain amount of dissolved water. The maximum water amount oil can hold is called “saturation point”. Above the “saturation point” free water will fall out which can cause corrosion inside of the engine.
The “saturation point” is influenced by temperature and other different factors like the composition of oil mineral or synthetic, formulation of additives and will change during the lifetime of the oil. The Water in Oil Sensor (WiO) is not measuring free water or emulsion, which is detectable by regular Water in Oil test kits, it measures the absolute water content in oil.
>The PAV (Pre Alarm Value) is set to 50% humidity. The MAV (Main Alarm Value) is set to 90% humidity. More than 100% humidity means free water is present. From this point regular Water in Oil test kits begin to measure.
Normally in the field, the water in oil content is measured by a Water in Oil test kit. The results are mostly <0.02% (or 100.02% humidity), this value means free water content.
If the WiO Sensor shows the main alarm, the value is higher than 90% humidity and damage could be caused to the engine if 100% humidity is reached.
Features- Measures the absolute water content in oil.
- Early warning by using pre alarm and alarm
- The PAV (Pre Alarm Value) is set to 50% humidity.
- The MAV (Main Alarm Value) is set to 90%
- Takes the oil temperature into consideration in order to measure the saturation
- The sensor measures the saturation of the oil independent from the oil type and oil age
- No cleaning of the sensor is needed.
Specifications
Brand
Power Supply
- 18…32 Vdc
Current Consumption
- 60 mA
Polarity Protection
- Yes
Alarm Relays
- Pre-alarm at 50 % humidity
- Main alarm at 90 % humidity
Output Current
- < 300 mA
Operating Temperature
- -25° C to +85° C
Protection Degree
- IP67
Analog Output: Water in Oil
- 4…20 mA (equiv. 0…100 % Humidity Linear)
Analog Output: Temperature
- 4…20 mA (equiv. 0…1000° C Linear)
Dimensions
- 125 mm x 80 mm x 57 mm
Local Indication
- LED Indicators
Wrong Polarity Protection
- Yes
Pressure Resistance Against Medium
- 10 bar
Connection Type
- G3/4” Male Thread
Material
- Stainless Steel AISI 303, 1.4305
Cable Length to Controller
- 15 m
Insertion Length
- 120 mm
- Condition Monitoring Lubrication Oil including:
- 2 and 4 Stroke Engines
- Compressors
- Pumps
- Gear Boxes
- Turbines
- Condition Monitoring for Hydraulic Oil including;
- All Machines using Hydraulic Oil up to 10 bar