- # 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 boilers
The testo 312-4 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 included testo fast printer 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 meter (e.g. high-pressure probe or thermocouple probe for temperature measurement).
| 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) * |
| 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 +25 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 |
Includes:
- # Testo 312-4 differential pressure meter,
- # Testo 312-4 hose set
- # Balloon pump with release screw
- # Conical test plug 1/2”
- # Conical test plug 3/4”
- # Testo fast printer (0554 0549)
- # Pressure set for gas pressure measurements in heating systems and system case
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