WDB7 Surface type bearing temperature sensors
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WDB7 Surface type bearing temperature sensors - 1

WDB7 SeriesLug Style Surface Temperature Sensor APPLICATION For use on any application where surface temperature monitoring is desired or required. METHOD OF OPERATION The WDB7 series is a lug style NTC thermistor or platinum RTD (PT100) type for continuous temperature monitoring. It is designed to bolt directly onto a bearing housing, motor, gearbox, or machine casing. The mounting hole is M8 which can be drilled out up to M10 diameter. The sensor can be connected to a PLC or to a hazard monitoring system, such as 4B's T500 Hotbus Elite, Watchdog Elite, or T400 Elite. The connections are not polarity sensitive therefore special connections requirements are eliminated. The WDB7 series is approved for use in hazardous locations. FEATURES ► Surface Mount Installation ► M8 Bolt Mounting Hole ► 1/2” NPT Conduit Entry ► NTC Version - Continuous Temperature ► PT100 Version - Platinum RTD ► PTC Version - Trip Points from 50°C to 90°C ► Continuous Temperature Monitoring ► ATEX, IECEx, EAC Ex, CCC Zone 20 Approved ► CSA Class II Div. 1 Approved Part Number Note: * 100°C, 110°C and 120°C Trip Point PTC sensors available on request. ATEX Zone 22; no IECEx ** /x denotes special fixing hole diameter WDB79V3CAI/B = 10.5mm DIA lug fixing hole Please refer to instruction manual for correct installation. Detailed specification, wiring diagrams and installation/operating instructions available upon request. Information subject to change or correction. June 2021

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WDB7 Surface type bearing temperature sensors - 2

$erre^ f>y Dfs/cw %” NPT CONDUIT ENTRY WDB70V3C Installed on Bearing Housing TECHNICAL SPECIFICATIONS WDB7 Series Surface Temperature Sensor Temperature Sensors can be used with the following 4B Hazard Monitoring Systems Detailed specification, wiring diagrams and installation/operating instructions available upon request. Please refer to instruction manual for correct installation. Information subject to change or correction. June 2021

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