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The WDB series bearing sensors are designed to screw directly into a bearing housing. Each sensor is fitted with a grease zerk to allow lubrication of the bearing without the need for removal of the sensor.
The WDB8 series have a 1/4” BSPT thread. The WDB2 series have a 1/8” NPT thread. Three versions are available; an NTC thermistor or Pt100 RTD type for continuous temperature monitoring, and a PTC thermistor model with the following trip points (specify when ordering): 60°C, 70°C, 80°C, 90°C for step (Cold/Hot) temperature monitoring.
The sensor is supplied with a three meter attached cable and can be connected to a hazard monitoring system, such as 4B’s T500 Hotbus Elite, Watchdog Super Elite, or T400 Elite or to a PLC. The connections are not polarity sensitive therefore special connection requirements are eliminated, and the cable can be extended in the field.
- Screw in positive mount installation
- Grease zerk for bearing lubrication
- WDB8 - 1/4” BSPT with cable entry (stainless steel body)
- WDB2 - 1/8” NPT with conduit entry (stainless steel body)
- WDB1 (Obsolete, use WDB8) - 1/8” NPT with cable entry (brass body)
- NTC version - continuous temperature
- Pt100 version - platinum RTD - continuous temperature
- PTC version - trip points from 50°C to 90°C - step response
- For use with T400, T400 Elite, T500 Elite, Watchdog Super Elite control modules or PLCs
Specifications
| | Part Number | Description | Thermistor Type | Thread | ATEX Zone | IECEx |
| # | ||||||
| WDB810V3AI | Continuous Temperature Monitoring | NTC | 1/4” BSPT | 20 | yes | |
| WDB819V3AI | Continuous Temperature Monitoring | PT100 | 1/4” BSPT | 20 | yes | |
| WDB812V3AI | 60°C Trip Point | PTC | 1/4” BSPT | 20 | yes | |
| WDB813V3AI | 70°C Trip Point | PTC | 1/4” BSPT | 20 | yes | |
| WDB814V3AI | 80°C Trip Point | PTC | 1/4” BSPT | 20 | yes | |
| WDB815V3AI | 90°C Trip Point | PTC | 1/4” BSPT | 20 | yes |
| . | ||||||
| Part Number | Description | Thermistor Type | Thread | ATEX Zone | IECEx | CSA |
| WDB20V3CAI | Continuous Temperature Monitoring | NTC | 1/8” NPT | 20 | yes | Class II Div. 1 |
| WDB29V3CAI | Continuous Temperature Monitoring | PT100 | 1/8” NPT | 20 | yes | Class II Div. 1 |
| WDB22V3CAI | 60°C Trip Point | PTC | 1/8” NPT | 20 | yes | Class II Div. 1 |
| WDB23V3CAI | 70°C Trip Point | PTC | 1/8” NPT | 20 | yes | Class II Div. 1 |
| WDB24V3CAI | 80°C Trip Point | PTC | 1/8” NPT | 20 | yes | Class II Div. 1 |
| WDB25V3CAI | 90°C Trip Point | PTC | 1/8” NPT | 20 | yes | Class II Div. 1 |
| | Part Number | Description | Thermistor Type | Thread | ATEX Zone | IECEx |
| # | ||||||
| WDB10V3AI | Continuous Temperature Monitoring | NTC | 1/8” NPT | 20 | yes | |
| WDB19V3AI | Continuous Temperature Monitoring | PT100 | 1/8” NPT | 20 | yes | |
| WDB12V3AI | 60°C Trip Point | PTC | 1/8” NPT | 20 | yes | |
| WDB13V3AI | 70°C Trip Point | PTC | 1/8” NPT | 20 | yes | |
| WDB14V3AI | 80°C Trip Point | PTC | 1/8” NPT | 20 | yes | |
| WDB15V3AI | 90°C Trip Point | PTC | 1/8” NPT | 20 | yes |
* The WDB1 is no longer stocked and available on request only. We recommend the WDB8 as a replacement sensor.
TECHNICAL SPECIFICATIONS
WDB8 Series Bearing Temperature Sensors
Note: WDB8 sensors have stainless steel bodies and do not have conduit entries.
TECHNICAL SPECIFICATIONS
WDB1 and WDB2 Series Bearing Temperature Sensors
NOTE:
WDB Series 1 sensors have brass bodies and do not have conduit entries.
WDB Series 2 sensors are stainless steel bodies with 1/2” NPT conduit entries and are CSA / NRTL Class II Div.1 / ATEX and IECEx Zone 20 approved.
