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    testo 312-4 - Differential pressure measuring instrument up to 200 hPa

    0632 0327
    testo 312-4
    testo 312
  1. Tightness testing and load testing on gas pipes
  2. Serviceability testing with air by pressure drop on gas pipes
  3. Pressure testing on drinking water and waste water pipes using air
  4. Automatic recording of measuring values over several hours
  5. Differential pressure gauge testo 312-4
    A measuring instrument for carrying out all necessary tests on gas heaters and pipes as well as water pipes. Inherently safe thanks to the use of C-Flex hoses with high impermeability. Legally compliant measurement procedure for pre-test, main test and leakage quantity measurement on gas pipes. Recording of measurement values over a defined period (e.g. 24 h) and data transfer and analysis on PC software incl. graphic presentation.

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

    Temperature - Type K TC

    Measuring range
    dependent on probe type used
    Accuracy
    ±0.7 °F (-148° to 392 °F)* / ±0.4 °C (-100 to +200 °C)*
    ±2 °F (Remaining Range)* / ±1 °C (Remaining Range)*
    Resolution
    0.01 °F t1 / 0.01 °C
    *Accuracy information applies only to instrument without probes connected

    Differential pressure (internal sensor)

    Measuring range
    0 to 80 InHâ‚‚O / 0 to 200 hPa
    Accuracy
    ±1 InH₂O or ±1 % of full-scale value (16 to +80 InH₂O) / ±2 hPa or ±1 % of fsv (41 to +200 hPa)
    ±0.01 InH₂O (0 to +1 InH₂O) / ±0.03 hPa (0 to +3 hPa)
    ±1.5 % of mv (+1.2 to +16 InH₂O) / ±1.5 % of mv (+3.1 to +40 hPa)
    Resolution
    0.01 InHâ‚‚O / 0.01 hPa

    Pressure measurement (external probe)

    Measuring range
    0 to 363 psi / 0 to 25 bar
    Accuracy
    ±0.6 % of full-scale value (>145 to 363 psi) / ±0.6 % of fsv (>10 to 25 bar)
    ±0.6 % of full-scale value (0 to 145 psi) / ±0.6 % of fsv (0 to 10 bar)
    Resolution
    4 InHâ‚‚O / 10 hPa

    Accessories

  6. Accessories
    RS232 cable
      :
      0409 0178
      $ 107.00
    • Accessories
      Connection cable
      Connection cable.
        :
        0430 0143
      • Accessories
        9V rech. battery for instrument
        9V rechargeable battery for instrument
          :
          0515 0025