Description
Main Features & Functions
- Calculates the energy used in Heating Systems
- This package falls within the combined component accuracy of Class 1 levels
- ‘On site’ programming facility and digital key option for reprogramming
- Manufactured to EN1434-1-1997
- Suitable for all billing applications – including Renewable Heat Incentive
- Open collector pulsed output (with grab circuit) as standard
- Digital high accuracy temperature sensors with ROM Clip
- Sensors do not need to be in matched pairs
All our heat meter packages include a heat calculator, a pair of temperature sensors (1 x flow and 1 x return) with the brass compression t-pieces or weld boss pieces (depending on the size of your water meter), a flow (water) meter, with pulse cable, and a thermal jacket.

The thermal jacket is optional but we do recommend it, just to ensure that the temperature of the water meter stays consistent.
Data Sheets
SmartHeat45 Manual
Technical Sheet
SmartHeat45 Wiring Diagram
TOMi Water Meter
Temperature Sensor
Installation Diagram
Sam –
Really pleased with my purchase for 10 heat meters, package complete with flow parts, sensor leads and t pieces . Great customer service.
Jacob –
Purchased 2 heat meter packages, arrived next day. Very helpful sales person.
Richard –
Knowledgeable and friendly sales person gave advice prior to my purchase. Complete package arrived the next day. Excellent service – thank you !
TJ –
Great price and fast delivery. Good quality system supplied with sensor leads, immersion pockets and protective jacket for the water meter
Andrew –
Customer service very helpful order arrived quickly. I bought the complete package – heat calculator, sensor leads, flow meter and pockets.
David –
I have been ordering these meters for a number of years, Very satisfied with them, Meters UK Ltd offer a excellent service providing meters very quickly and a very good technical department that have solved any problems with ease.
Joshua –
I have ordered several of the heat calculator systems over the past few years. Great customer service and good quality system.
Stewart –
UK made ! Excellent piece of kit.