Precision monitoring
Accurate flow measurement
The Flow Check with Thread provides precise, real-time measurements of compressed air and gas flow rates, helping optimise system performance.
User-friendly
Easy installation & operation
The Flow Check with Thread's inline design and rotatable display allow quick installation and easy access to key data in various pipeline setups.
Smart connectivity
Seamless system integration
With digital interfaces like Modbus RTU and Ethernet, it integrates smoothly into energy management systems for streamlined monitoring and analysis.
General specifications
Technical data Flow Check with Thread |
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Parameters |
m³/h, l/min (1000 mbar, 20 °C) at compressed air or Nm³/h, Nl/min (1013 mbar, 0 °C) for gases |
Units adjustable via keys at display |
m³/h, m³/min, l/min, l/s, ft/min, cfm, m/s, kg/h, kg/min, g/s, lb/min, lb/h |
Sensor |
Thermal mass flow sensor |
Measuring medium |
Air, gases |
Gas types are adjustable over PMH service software or PMH data logger |
Air, nitrogen, argon, helium, CO2 , oxygen, vacuum |
Accuracy |
± 1.5 % of m.v. ± 0.3 % of f.s. on request ± 1.0 % of m.v. ± 0.3 % of f.s. |
Operating temperature |
-30-80 °C |
Operating pressure |
-1 to 16 bar optional to PN 40 |
Digital output |
RS 485 interface (Modbus-RTU), optional: Ethernet-Interface PoE), M-Bus |
Analog output |
4-20 mA for m³/h e. g. l/min |
Pulse output |
1 Pulse per m³ or per liter galvanically isolated. Pulse value can be set on the display. Alternatively, the pulse output can be used as an alarm relay |
Supply |
18-36 VDC, 5 W |
Burden |
< 500 Ω |
Housing |
Polycarbonate (IP 65) |
Measuring section |
Stainless steel, 1.4301 or 1.4571 |
Process connection |
R 1/4“ to R 2“ (BSP British Standard Piping) or 1/2“ to 2“ NPT-thread |
Mounting position |
Any |
- Digital interfaces such as Modbus RTU, Ethernet (PoE) and M-Bus enable connection to higher-level systems such as energy management systems, building management systems, SPS
- Easy and affordable installation
- Units freely selectable via keys at the display m³/h, m³/min, l/min, l/s, kg/h, kg/min, kg/s, cfm
- Compressed air counter up to 1.999.999.999 m³. Resetable to „zero“ via keypad
- Analogue output 4-20 mA, pulse output (galvanically separated)
- High measuring accuracy also in the lower measuring range (ideal for leakage measurement)
- Negligibly small loss of pressure
- Calorimetric measuring principle, no additional pressure and temperature measurement necessary, no mechanically moved parts
- Comprehensive diagnosis functions can be read out at the display or by remote access via Modbus-RTU like e. g. exceeding Max./Min values °C, calibration cycle, error codes, serial number. All parameters can be read out and changed via Modbus
