Fine Pressure/Draught Measurement; Connection Options - testo 312-2/3 Bedienungsanleitung

Measurement example: testo 312-2
testo 312-2: ∆P range 0 to 40 hPa. Resolution: 0.01 hPa
testo 312-3: ∆P range 0 to 300 hPa. Resolution: 0.1 hPa
1
Connect
probe.
2
Switch on
instrument.
- Segment test (3 s)
3
- Voltage display (3 s)
(See page 6)
- Function check
(See page 7)
Measurement
4
08:38
-----
Measurement
menu
5
Measurement
08:38
menu
selection with
-
arrow button.
-----
Fine pressure / Draught measurement
6
Start measurement.
7
09:25
Wait on calibration
phase (5 s)
2
8
Position probe in flue
09:25
gas duct. The reading
appears in the
display.
- 0.24
9
Save reading.
HOLD appears in the
display
09:25
13.0
10
The saved readings
can be printed.
8
Measurement example: testo 312-2/-3
Mini valve
Connect pressure transducer
directly to instrument. Do not
use extensions. Apply
pressure.
Pressure transducer (for liquid
Remove pressure from pipe
substances); Refer to
before detaching pressure
instructions on page 22.
transducer from instrument.
Observe maximum pressure
range.
Positive pressure destroys the
instrument.
Testing
pump

Connection options

Single-pipe Conical High pressure
counter cap test plugs stepped plugs
Junction Connection hose
Pressure
drop set
Suitable for:
- Pre-test
- Main test
- Testing service ability
- Checking pressure in
water pipelines
Balloon Compressor Inert gas
pump
9