Differential Pressure Switches monitor the change in the difference between two pressures. Differential pressure switches are used in applications to signal that a predetermined pressure difference is reached as a result of a widening or increasing difference between the two pressures. Differential pressure switches give the relative pressure between two points. Pressure switches have an electro-mechanical or solid-state switch construction.

Differential Pressure Transducer converts a differential or gauge air pressure signal to a 4-20 mA signal. A signal conditioning circuit runs as a two wire 4-20mA devices. The input pressure signals are mechanically dampened to reduce sensitivity to turbulence and short duration pressure fluctuations. Integral zero and span adjustments are factory calibrated to specified output signal levels and may be field adjusted if required. The circuit design produces very little interaction between span and zero pots. It includes HVAC monitoring of filter differential pressures, fan static pressures, clean room pressures, variable air volume systems and velocity pressures. It provides total of 30 field-selectable variations that include unidirectional and bi-directional pressure ranges. They also provide auto-zero capability and include field-selectable port swap feature. With all cast aluminum housing, transducers are available with optional LCD for on-site indication of line and differential pressure.

Differential pressure transmitter transmits low-level electrical outputs from pressure sensing devices to higher-level signals that are suitable for transmission and processing. It can be used to measure liquid, gas, or steam flow as well as liquid level, density and pressure. It can also be monitored from a remote location by use of digital communications.

Differential Side Bearing Pullers is used to remove differential side carrier bearing. It works on a wide variety of cars and light-duty trucks. It includes four step plate adapters to fit carrier bearings. It has puller with 3-1/4″ maximum reach, 6″ maximum spread. It includes forcing screw and cross block assembly. It contains puller jaws / pins and puller jaws retaining yoke.

Diffuse Reflective Sensors have source and detector within one fitting and are able to distinguish different reflector target types & colors. Diffuse reflective sensors are used for part ejection detection. They feature stainless steel casing for use in the beverage & food industry, durable protection & sealing of the optics, potentiometer, sensitivity adjustment and protection frame. Diffuse reflective sensors detect light-reflecting objects.