Datasheet

testo 312-4
testo 312-4 differential pressure meter incl.
battery and calibration protocol
Part no. 0632 0327
With the electronic differential pressure gauge testo 312-4,
fine pressure measurements can be carried out quickly and
reliably when checking the resting pressure and flow
pressure of gas, and when setting the correct jet pressure on
gas burners and boilers.
Tests on newly installed gas pipes (load and gas-tightness
tests), or on pipes already in use (serviceability tests) can
also be carried out quickly and in accordance with the law.
The user-friendly menu structure for the respective
measurements considerably eases work.
Time and money can be saved in customer service,
especially when checking the gas pressure regulator, thanks
to the automatic measurement value recording over several
hours by testo 312-4 (max. 25,000 measurement values). The
use of special C-Flex hoses guarantees the gas-tightness of
the hoses, particularly in long-term measurements. The
simultaneous recording of pressure and temperature allows
the detection of unusual pressure fluctuations which are
graphically analyzed by the Easyheat PC software, and can
thus be easily explained to the customer.
Load tests and leakproofness tests on drinking water and
waste water pipes can be carried out without complications
using the handy high-pressure probe. The external probe
provides excellent protection for the instrument from water
and high pressures.
• Gas-tightness and serviceability test by pressure drop on
gas pipes according to DVGW-TRGI 2008
• Load test on gas pipes according to DVGW-TRGI 2008
with the help of the high pressure probe
• Checking the regulator by recording the measurement
values over a defined period
• Checking the gas connection pressure and gas flow
pressure as well as setting the jet pressure on gas
burners and boilers
• Pressure tests on drinking water pipes with water using
the high-pressure probe according to DIN 1988 (TRWI) as
well as with air accoding to the ZVSHK information sheet
• Pressure test on waste water pipes according to DIN EN
1610 using the high pressure probe
testo 312-4
Fulfilling all measurement tasks on gas heating
systems and on gas and water pipes.
Temperature probe
type K and high
pressure probe
Temperature probe type K and high
pressure probeRS232 cable
Mains unit
12 V
Pressure nipple p+
(with fast-action
coupling
connection)
Pressure nipple p- (with fast-
action coupling connection)
We measure it.
testo-312-2-3-4-P06 23.11.2011 14:39 Seite 6