Heating technology

Measuring differential pressure in heating systems

When you carry out servicing work on residential heating systems, differential pressure measurement is part of the standard repertoire. These include:

  • Measurement of gas flow pressure and static pressure on gas boilers

  • Differential pressure measurements in the adjustment and servicing of gas heating systems

  • Pressure testing of water pipes using air

The measurement of gas flow and static gas pressure in the system are especially important. Because the burner can only operate well at a flow pressure between approximately 18 to 25 mbar. Outside this range, explosive flame formation can occur. The consequences are malfunctions or even breakdown of the heating system. For this reason, the acquisition of a reliable, easy-to-operate differential pressure measuring instrument is worthwhile.

Measuring differential pressure in heating systems with the testo 512-1

Measuring differential pressure with the testo 512-1 digital differential pressure measuring instruments

With app integration, measuring range 0 to 200 hPa

Differential pressure measuring instruments

testo Smart App

Welcome to the testo Smart World: The whole world in one App.

Faster, easier, smarter: The testo Smart App brings all tools and measurements together - and documentation can also be dealt with conveniently using a smartphone or tablet. Benefit from intelligent connectivity and the unique all-in-one solution for all applications. So that not only the jobs on all heating systems are carried out smartly and effortlessly.

testo Smart App

Parallel measurement

Efficient and safe

Documentation

Uncomplicated and safe

Customer data management

Quick and easy

Data transfer

Professional and comfortable

Second Screen

Simply comfortable

Remote Control

Simple and flexible

Other applications

Flue gas analysis

Exhaust and flue gas measurement on heating systems and other small combustion plants is used to determine the level of pollutants emitted and the heat energy lost.

  • The atmosphere should be contaminated by pollutants as little as possible.

  • Energy should be used as efficiently as possible.

Measuring differential pressure with the testo 512-1
Tips & tricks

Carry out measuring tasks on heating systems efficiently and safely

Download the exclusive practical guide for free now.

Measuring tasks on heating systems

Checking the gas connection pressure

Setting the gas-air ratio

Preparing the flue gas analyzer

Determining the flue gas loss

Calculating the efficiency (η)

And much more ...

All about heating measuring technology

No results found.

Our services

Contact us

Do you have any queries, or would you like a personal consultation?
We would be happy to help you.

Calibration

Our subsidiary company Testo Industrial Services supports you daily in ensuring quality while always adhering to the relevant norms and guidelines. You get all the services you need from one provider.

Address
Testo South Africa (Pty) Ltd.
1 Glen Eagle Office Park
Cnr Braambos & Monument Rd.
Glen Marais, 1619Kempton Park, South Africa
Jhb: +27 11 380 8060

Opening hours:

Mon-Thur: 08:00 - 17:00Fri: 08:00 - 16:00

© 2026