Differential pressure measuring instrument

A variety of directives describe the tests which have to be carried out before commissioning water and gas pipes. The testo 312-4 differential pressure measuring instrument offers measuring processes for load and tightness tests as well as serviceability tests on gas pipes using air. It also enables the checking of static gas and gas flow pressures, as well as the nozzle pressure setting on gas burners or boilers.

Temperature - TC Type K (NiCr-Ni)

• Measuring range: dependent on probe type used
• Accuracy:
• ±0.4 °C (-100 to +200 °C)*
• ±1 °C (Remaining Range)*
• Resolution: 0.01 °C
• *Accuracy information applies only to instrument without probes connected Differential pressure (internal sensor)
• Measuring range: 0 to 200 hPa
• Accuracy: ±0.03 hPa (0 to +3 hPa)
• ±1.5 % of mv (+3.1 to +40 hPa)
• ±2 hPa or ±1 % of fsv (41 to +200 hPa)
• Resolution: 0.01 hPa

Pressure measurement (external probe)

• Measuring range: 0 to 25 bar
• Accuracy:
• ±0.6 % of fsv (0 to 10 bar)
• ±0.6 % of fsv (>10 to 25 bar)
• Resolution: 10 hPa

General technical data

• Dimensions: 219 x 68 x 50 mm
• Interface printer: Infrared interface
• Data transfer: RS232
• PC software: Easyheat
• Memory: 25,000 measuring values
• Weight: 600 g

Delivery:

testo 312-4 differential pressure measuring instrument, including battery and calibration protocol.