mag-flux HTL

Mobile flow meter with free flowthrough - compact and robust.

The mag-flux HTL hydrant tester is used in both the fire protection and the water industries and is used to test the performance of hydrants quickly and easily – e.g. according to W 405 and DIN 14462. This mobile flow and pressure meter is extremely robust. Because it has no moving parts, there is no pressure loss. The splash-proof housing means it is easy to clean and can also be used in rainy weather without any problems.

Flow pressure measurement and GPS positioning of the hydrant

Equipped with state-of-the-art software, water pressure, flow rate and total flow rate are displayed for each measurement from the outset. The device measures leak flow quantities and can carry out measurements on firefighting water and well water. At the same time, the hydrant tester uses GPS to determine the exact position of the hydrant, thereby avoiding the incorrect assignment of measurement data.

Data transfer to PC via Bluetooth and evaluation of the results with LOG Control software

The measuring process itself is controlled using the easy-to-read display. Longer measurements can also be carried out thanks to a battery life of up to 24 hours. All measurement data is automatically stored in the hydrant tester, and can then be transferred to a PC via Bluetooth for further processing. The optional, powerful LOG Control software can be used to document and evaluate measurements.



The main application of the mobile, battery-operated mag-flux HTL hydrant tester is the measurement of the flow and pressure in hydrants, both above and below ground.

The device is used in the following industries:

  • Reliability (long-term stability, service life)
  • Minimal maintenance requirements
  • No moving parts in the measuring section (no wear)
  • Free flow (no additional pressure losses)
  • Easy commissioning and operation using three button displays
  • High measuring accuracy including a calibration certificate on test bench equipment according to EN 17025
  • Compact design
  • Excellent stability
  • Long battery life (up to 24 hours) and short charging times
  • GPS functionality for exact determination of location (optional)
  • Extensive evaluation options including data export to GIS (optional)
  • Short delivery times

Special features of the flow and pressure meter:

  • Nominal diameters from DN 40 (Storz C) from 0 ... 905 l /min. up to DN 150 (Storz 150) 0 ... 12,723 l /min.
  • Rotatable and exchangeable Storz process connections
  • Data memory for 2,000,000 measured values
  • Data transmission via Bluetooth (in conjunction with LOG Control evaluation software)
  • CE marking according to EMC Directive 2014/30/EU and RED Directive 2014/30/EU.

Measuring principle

Measuring principle

Magnetic inductive synchronised DC field

Measuring accuracy Measurement error ±0.5% of the measured value, repeatability ±0.15% of the measured value
Media temperature range +1°C to +40°C
Ambient temperature range +1°C to +50°C
Process connection DN 40 - DN 150
Storz C - Storz 150
Flow range DN 40 (Storz C rotatable) 0 … 905 l /min. (0 … 54,3 m³/h)
DN 50 (Storz C rotatable) 0 … 1,413 l/min. (0 … 84,8 m³/h)
DN 80 (Storz B rotatable) 0 … 3,619 l/min. (0 … 217.2 m³/h)
DN 100 (Storz A rotatable) 0 … 5,655 l/min. (0 … 339.3 m³/h)
DN 150 (Storz C rotatable) 0 … 723 l /min. (0 … 763.4 m³/h)


Pressure measurement

Measuring principle


Measuring accuracy Linearity ±0.25% of range value
Compensated area -10°C to +80°C
  • Calibration
  • Service deployment (on-site inspection / maintenance)
  • Repair
  • Customer consulting by phone
  • Extended warranty (on request if required)

Product advice

If you have any questions or require a custom solution please call us or write us.
We look forward to hearing from you.

Your contact partner

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Herr Henning
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Röntgenstraße 105
50169 Kerpen

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Phone: +49 (0)2237 600 06-0
Fax: +49 (0)2237 600 06-40


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