Pressure Transducers

Harwood Engineering Company offers two types of pressure transducers; the Manganin® cell and the strain gage load cell. Both are available for pressure up to 200,000 psi for both liquid and gas service. Pressure transducers are sold with 10-point calibration against a NIST traceable primary or secondary standard.  Also available are Precision Digital panel meters for pressure indication and/or control.

Strain Gage Load Cell

The strain gauge load cell is extremely reliable and durable. This rugged pressure transducer is more suitable for general field applications.

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Manganin® CellPressure Transducers

The Manganin® cell has greater accuracy but is more delicate.  It is predominantly used as a precise calibration instrument in controlled environment laboratory settings.


The Manganin® cell can be used with polar or non-polar fluids.  Accuracy is ±100 psi when calibrated against our secondary standard, and ± .02% of reading when calibrated against our primary standard DWT-1000.

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Harwood’s calibration lab uses a DWT-1000 as its primary standard calibration system. The secondary standard calibration system uses a Manganin® cell as the transfer standard- which itself is calibrated against the DWT-1000. Additional information can be found on both the pressure standards page and calibration services page.