The device provides accurate digital pressure measurement with built-in digital compensation for
temperature variations and non-linearity in readings. It is specifically designed for hydraulic
balancing in heating and cooling systems. This device can measure static pressure, differential
pressure and flow within these systems and further supports flow correction to account for
antifreeze mixtures used in cooling systems. The device calculates flow rates in system branches by
measuring the differential pressure across the balancing elements. Measurements can be taken in all
branches of the hydronic system, allowing for comprehensive system balancing. T650 is operated
via a mobile application compatible with Android and iOS. The app displays real-time pressure and
flow values at the measuring point. It also allows for flow correction when using antifreeze
mixtures in cooling systems. T650 is operated through a mobile application compatible with both
Android and iOS devices. The app provides real-time readings of pressure and flow at the
measuring point.
Features
Precise pressure measurement
Separated measuring unit
True differential pressure sensor
24-bit AD conversion
Digital compensation for temperature effects and measurement non-linearity
Precise zeroing of differential pressure measurement via mechanical bypass
Measurement of relative (static) and differential pressure in systems
User-friendly application for mobile devices with Android or iOS
Transfer of measurement data to the mobile application via Bluetooth Low Energy
Optional correction for calculating the flow rate of antifreeze liquids
Database of balancing valves from leading manufacturers
Easy selection of balancing valves using visual identification
Project-based workflow support
Autonomous recording of measured values, with a capacity of up to 2,000 records
Technical parameters
Pressure Sensor
Piezoresistive true differential pressure sensor
Full Scale Range
1 MPa (2 MPa available on request)
Allowed Overpressure
120 % of FS
Non-linearity, Hysteresis and Repeatability Error
0.15 % of FS
Zeroing Error (under 5 kPa)
± 50 Pa (FS 1 MPa), ± 100 Pa (FS 2 MPa)
Zeroing Time
Max. 10 seconds when media temperature exceeds 50 °C
Temperature Error*
0.25 % of FS
Allowed Media Temperature
0 °C to 90 °C (water), -20 °C to 90 °C (antifreeze), measured at the end of 1.5 m hoses
Ambient Temperature Range
-5 °C to 50 °C
Storage Temperature Range
+5 °C to 50 °C
Wireless Data Transfer
Bluetooth® Low Energy 5.0
Radiated Power
Max. +6 dBm (4 mW)
Power Supply
2× AAA alkaline or NiMH rechargeable
batteries (Eneloop AAA HR-4UTGB or
BK-4HCC recommended)
Supply Current
Max. 25 mA
Operating Time
Up to 45 hours
Pressure Measurement Zeroing
Manual zeroing with mechanical bypass of the pressure sensor
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