ABB HVC-02B 3HNA024966-001/03 Output logic module

The MKS Type 223 Baratron® General Purpose Differential Transducer offers a reliable, accurate, inexpensive solution to measuring low differential pressures generated by air flow in HVAC and cleanroom applications. Operating on the variable capacitance technique, the 223 all-metal sensor contains a tensioned metal diaphragm, one side of which is exposed to the gas whose pressure is to be measured (Px side). The other side (reference, or Pr, side) is adjacent to an electrode assembly which is terminated in another like port. The diaphragm deflects with changing differential pressure, causing a capacitance change between the diaphragm and the adjacent electrode assembly. This capacitance change then generates an AC voltage, which the 223’s signal conditioner converts into a high level DC voltage output, linear with pressure, and calibrated against a pressure standard. The MKS Power Supply/Readout Module, or a user-supplied power supply of ±11 to 18 VDC, is required to operate the 223.

Features & Benefits 

• All-metal sensor eliminates handling problems associated with glass, mercury, and liquid gauges • Usable resolution of 1 part in 10,000

 — minimizes the number of transducers required to cover a wide range of pressures • Industry standard power requirements and output signals 

— ±11 to ±18 VDC input voltage 

 — 0 to +1 or +5 VDC output linear with pressure for unidirectional 

 — 0 to ±1 or ±5 VDC output linear with pressure for bidirectional • Three levels of accuracy to meet your specific process control requirements • Can be calibrated for either uni- or bidirectional applications

Professional standards

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