Starting at $631.10
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  • ±0.25% full scale accuracy
  • Hysteresis ≤ ±0.1% of full scale
  • 621: 316 stainless steel threaded connection
  • 622S: 316 Stainless steel flush diaphragm
  • Pressure ranges: vacuum to 15000 psi
  • 1/2 inch NPT conduit connection
  • Explosion-Proof, entity approval
    • Class I, Division 1, Groups A, B, C, & D
  • Dust ignition-proof
    • Class II and III, Division 1, Groups E, F, & G
  • FM and CSA approved
  • ANSI/ISA 12.27.01 single seal approved


The NOSHOK Series 621 and 622 pressure transmitters combine the reliability and long life of diffused semiconductor and sputtered thin film strain gauge sensors with safe electronics for outstanding performance and value. These transmitters were designed for applications that require pressure measurement in hazardous environments. Welded 316 stainless steel, and Elgiloy construction with no internal O-rings, gaskets or seals. The 621 transmitter includes an internal diaphragm while the 622 transmitter utilizes a front flush diaphragm.

The NOSHOK Series 621 and 622 pressure transmitters are available with a wide variety of pressure ranges to suit most applications. All units undergo extensive testing during the manufacturing process to ensure that the highest performance is achieved in the demanding environments found in today's applications.

NOSHOK transmitters are available with a standard threaded connection as well as a flush diaphragm configuration and are Factory Mutual approved. All models incorporate significant levels of RFI, EMI and ESD protection.

Applications for the NOSHOK 621 / 622 Pressure Transmitter

  • Hydraulic and pneumatic systems
  • Pumps and compressors
  • Test equipment and systems
  • HVAC systems
  • Power generation
  • Water and wastewater
  • Refrigeration equipment
  • Laboratory / Test equipment
  • Chemical / Petrochemical
  • Marine
  • Pipeline gas compressors
  • Oil field
  • Offshore