testo 312-4 - Differential pressure measuring instrument - Part No. 0632 0327 - Pressure Measuring Instruments - Measurecon Instruments

Testo 312-4 – Differential pressure measuring instrument

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

You can carry out all the necessary tests on gas heating systems as well as water and gas pipes with the testo 312-4 electronic differential pressure measuring instrument. Preset measuring processes, for example for load and tightness tests as well as serviceability testing on gas pipes, provide you with ideal support for your work.

Details

Product Description

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.

Advantages of Testo 312-4

These measurements are possible with the testo 312-4 differential pressure measuring instrument– Tightness and serviceability testing by pressure drop on gas pipes in accordance with DVGW TRGI 2008
– Load testing on gas pipes in accordance with DVGW-TRGI 2008 using our high-pressure probe (can be ordered as an option)
– Pressure testing on drinking water pipes using water and with the support of the optional high-pressure probe in accordance with DIN 1988 (TRWI) and using air in accordance with the ZVSHK information sheet
– Pressure testing on waste water pipes using our high-pressure probe (can be ordered as an option)
– Checking the gas pressure regulator by recording the readings over a defined period (max. 25,000 readings)
– Checking the gas connection and gas flow pressure, as well as setting the nozzle pressure on gas burners and boilersPractical features of the differential pressure measuring instrument
The testo 312-4 differential pressure measuring instrument offers a high level of operating convenience in order for you to carry out pressure measurement efficiently – for instance through preset measuring processes or the clear presentation of readings on the large display.

The testo fast printer, which can be ordered as an extra, means you can produce measurement data printouts directly on site.

The easyheat PC software is available to you as an option for data transfer and evaluation.

Furthermore, probes which are also available for various measuring tasks can be attached to the differential pressure measuring instrument (e.g. high-pressure probe or thermocouple probe for temperature measurement).

Delivery Scope

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

Technical Data

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

Downloads

Product Brochures

Datasheet testo 312-4 (application/pdf, 512 KB)

Manuals

Instruction manual testo 312-4 (PDF, 1.4 MB)

Product Enquiry

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