If the shield is physically damaged

Technicians should check for continuity across the leads when the heater is disconnected or use an ammeter to verify current draw when the compressor is in the off-cycle and the heater is energized

Avoid top-mounting where air pockets could lead to inaccurate temperature monitoring and potential system failures

and all necessary body O-rings for a leak-proof seal

effectively replacing legacy foot-mounted

Dwyer Instruments 2000-00N Pressure Gage 320819-301 If the shield is physicallyThe Dwyer 2000 00N Magnehelic Differential Pressure Gage is the industry standard for monitoring fan and blower pressure, filter resistance, and furnace draft in precise HVACR environments. This zero center gage features a . 05 0 . 2" w. c. range, making it indispensable for measuring both positive and negative pressures in cleanroom monitoring and low pressure air systems. Engineered with a large 4" diameter dial face, it provides high visibility