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WDB1 & 2 Series Bearing Sensor

The WDB 1 & 2 series is a range of bearing sensors manufactured to screw directly into a bearing housing through the existing 1/8” NPT threaded grease zerk. Each sensor is fitted with a grease zerk to allow lubrication of the bearing without the need for removal of the sensor.

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	NTC Type Specifications:		Literature:
	• Resistance at 77 °F: 10,000 Ohms		• Product Datasheet
	• Resistance at 140 °F: 2,487 Ohms
	• Resistance at 194 °F: 916 Ohms		Technical:
	• Sensing Voltage: 5 to 24 VDC		• WDB2 Product Manual
	• Current Draw: 1 mA
	• Cable: 9 ft. (3 m) 2 Conductor		Product Dimensions (WDB2):
			• .dwg (AutoCAD) .pdf
	PTC Type Specifications:
	• Resistance at 140 °F: ≤ 250 Ohms
	• Resistance at Trip Point: ≥ 2,000 Ohms
	• Sensing Voltage: 5 to 25 VDC
	• Current Draw: 20 mA
	• Cable: 9 ft. (3 m) 2 Conductor

	PT100 / RTD Type Specifications:
	• Resistance at 32 °F: 100 Ohms
	• Resistance at 212 °F: 138.4 Ohms
	• Sensing Voltage: Via Transducer
	• Current Draw: 1 mA
	• Cable: 9 ft. (3 m) 4 Conductor

	Approvals:
	• WDB2 - CSA Class II Div 1 Groups E, F & G (U.S. & Canada)
	• WDB1 - ATEX



	Part Numbers and Accessories:
	• WDB10V3AI - NTC Type (Continuous)
	• WDB11V3AI - PTC Type (122 °F Trip)
	• WDB12V3AI - PTC Type (140 °F Trip)
	• WDB13V3AI - PTC Type (158 °F Trip)
	• WDB14V3AI - PTC Type (176 °F Trip)
	• WDB15V3AI - PTC Type (194 °F Trip)
	• WDB19V3AI - RTD PT100 Type (Continuous)

	• WDB20V3C - NTC Type (Continuous)
	• WDB21V3C - PTC Type (122 °F Trip)
	• WDB22V3C - PTC Type (140 °F Trip)
	• WDB23V3C - PTC Type (158 °F Trip)
	• WDB24V3C - PTC Type (176 °F Trip)
	• WDB25V3C - PTC Type (194 °F Trip)
	• WDB29V3C - RTD PT100 Type (Continuous)


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	Are the probe depths adjustable on the WDB1 or WDB2?
	No, only the ADB and Milli-Temp series have adjustable depth probes.