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

Order-Nr.  0632 0327

  • Tightness testing and load testing on gas pipes

  • Serviceability testing with air by pressure drop on gas pipes

  • Pressure testing on drinking water and waste water pipes using air

  • Automatic recording of measuring values over several hours

Differential pressure gauge testo 312-4

Product Description

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.

 

Delivery Scope

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 InH₂O / 0 to 200 hPa

Accuracy

±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)

±1 InH₂O or ±1 % of full-scale value (16 to +80 InH₂O) / ±2 hPa or ±1 % of fsv (41 to +200 hPa)

Resolution

0.01 InH₂O / 0.01 hPa

Pressure measurement (external probe)

Measuring range

0 to 363 psi / 0 to 25 bar

Accuracy

±0.6 % of full-scale value (0 to 145 psi) / ±0.6 % of fsv (0 to 10 bar)

±0.6 % of full-scale value (>145 to 363 psi) / ±0.6 % of fsv (>10 to 25 bar)

Resolution

4 InH₂O / 10 hPa

General technical data

Dimensions

9 x 3 x 2 in. / 219 x 68 x 50 mm

Interface printer

Infrared interface

Data transfer

RS232

PC software

Easyheat

Memory

25,000 measuring values

Weight

21 oz. / 600 g

Accessories

RS232 cable

Order Number: 0409 0178

Connection cable

Order Number: 0430 0143

TopSafe (protective case)

Order Number: 0516 0446

Hose set for testo 312-4

Order Number: 0554 3172

Product Brochures

Manuals

Software