Module M03 · Track 1 Foundations
Pressure, flow & measurement
Measuring gas pressure, understanding pressure loss and working out heat input.
Start 3.1: Pressure and its unitsSyllabus mapping
- CCN17. Checking and/or setting meter regulators
- CCN110. Checking and setting appliance burner pressures and gas rates
- MLPA1.7 Checking and/or setting meter regulators
- MLPA1.10 Checking and setting appliance operating pressures and heat inputs
- Level 3Unit 302 Scientific principles in gas utilisation
- Level 3Unit 303 Combustion and properties of gas
- Level 3Unit 305 Gas safety principles
Learning outcomes
By the end of this module, learners can:
- M03.1Convert between common pressure units and explain gauge pressure.
- M03.2Connect and read a manometer to measure standing, working and operating pressures.
- M03.3Explain why pressure is lost along pipework and the limits that apply.
- M03.4Calculate heat input from a meter gas-rate test.
Topics
- 3.1
Pressure and its units
Millibar, pascal and gauge pressure, and the pressures found in a domestic installation.
Draft - 3.2
Manometers and test points
Connecting, zeroing and reading U-gauge and digital manometers.
Draft1 artefact - 3.3
Standing, working and operating pressure
What each pressure tells you, and where and when to measure it.
Draft - 3.4
Pressure loss and flow
Why pressure falls along pipework and what limits the loss.
Draft1 artefact - 3.5
Gas rate and heat input
Timing the meter to find the gas rate, then calculating heat input.
Draft1 artefact