The high precision testo 521-1 differential pressure measuring instrument is ideal for accurate differential pressure measurements in air conditioning and ventilation technology, for pressure drop on filters, for instance, for checking fans and extractors, or for pitot tube measurements.

The high precision testo 521-2 differential pressure measuring instrument is ideal for accurate differential pressure measurements in air conditioning and ventilation technology, for pressure drop on filters, for instance, checking fans and extractors, or for pitot tube measurements.

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Ideal for checking pressure in sensitive industrial processes, the testo 526-1 high precision differential pressure measuring instrument&nbsp;has a measuring accuracy of &plusmn;0.1% of the final value. It also has two probe inputs for additional pressure and temperature probes.

The testo 526-2 high precision differential pressure measuring instrument is ideally suited for checking pressure in sensitive industrial processes, thanks to a measuring accuracy of &plusmn; 0.05% of the final value. Two additional pressure and temperature probes can be attached.

High pressure probe, refrigerant-proof stainless steel, up to 435 psi, without cable

High pressure probe, refrigerant-proof stainless steel - High pressure probe

High pressure probe, refrigerant-proof stainless steel

HVAC Contractors

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Measuring range	-15 to +435 psi / -1 to +30 bar
Accuracy	±1 % of full-scale value
Overload rel. (low pressure)	1740 psi / 120 bar

Operating temperature	-40 to +212 °F / -40 to +100 °C
Zeroing	4.351 psi / 0.3 bar

High pressure probe, refrigerant-proof stainless steel - High pressure probe

High pressure probe, refrigerant-proof stainless steel - High pressure probe

Pressure measurement

General technical data