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0632 0327

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

testo 312-4
testo 312
Differential pressure gauge testo 312-4
  • 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
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.

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

Product sets

Basis-Set testo 312-4

: 0563 1327

Basic set testo 312-4

Differential pressure gauge testo 312-4

Hose set for testo 312-4

Balloon pump with release screw

Conical test plug 1/2"

Conical test plug 3/4"

IR report printer

Pressure set for gas pressure measurements on heating systems

System case

Hochdruck-Set testo 312-4

: 0563 1328

High-pressure set testo 312-4

Differential pressure gauge testo 312-4

Hose set for testo 312-4

Balloon pump with release screw

Conical test plug 1/2"

Conical test plug 3/4"

IR report printer

Pressure set for gas pressure measurements on heating systems

High-pressure plug 3/8" and 3/4"

High-pressure plug 1/2" and 1"

High-pressure probe 1up to 5 bar

System case

Accessories

Image

: 0409 0178

Data cable and USB adapter kit - for testo 350 XL

RS232 cable

$ 107.00
Connection cable

: 0430 0143

Connection cable - Connection cable, 1.5m long, (For testo 400, 445, 645, 650)

Connection cable.

9V rech. battery for instrument

: 0515 0025

9V rechargeable battery for instrument - 9V rechargeable battery for instrument

9V rechargeable battery for instrument

TopSafe

: 0516 0446

TopSafe (protective case)

TopSafe (protective case)

testo 320-330 case

: 0516 3300

System case (height: 130 mm) for instrument, probes and acce... - System case (height: 130 mm) (Discontinued)

System case (height: 130 mm) for instrument, probes and accessories

$ 157.00
Pressure set

: 0554 0449

Pressure connection hose, single, diameter: 4/6 mm, 50 cm lo... - for gas pressure measurement on heating systems

Pressure connection hose, single, diameter: 4/6 mm, 50 cm long, with connection adapter

Headquarters
Testo Inc.
40 White Lake Road
07871Sparta
New Jersey
800-227-0729

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