MiniCal III Bypass Fitting

The bypass fitting was designed for monitoring ammonia leaks in pressure lines. It is an innovative system that enables commissioning, service and maintenance work without interrupting the process.

A partial flow of the medium is guided through the MiniCal III bypass fitting and pumped back into the pipeline. This will give you more flexibility regarding the installation location. Depending on the local conditions, the fitting is mounted either below the pipeline or on the wall.

The medium in the measuring chamber must be exchanged regularly to ensure early detection of any ammonia leaks. A partial flow of the medium is passed through the fitting as soon as the upstream solenoid valve opens. A regular exchange of the medium can thus be achieved by setting the interval and the opening time of the solenoid valve. After the measurement has been taken, the medium is pumped back into the circuit by a high-pressure pump to avoid coolant losses.

The flow can be controlled by monitoring the pump and the solenoid valve. The bypass fitting is designed for a pressure range of 1 to 6/10 bar and a temperature range of -10°C to +50°C.

Key features at a glance:


  • Flow control
  • Regular medium exchange
  • No loss of coolant
  • Simple installation and operation
  • Measurement in pipelines from 1 to 6/10 bar
  • Signal preamplifier/microprocessor mounted on fitting in housing
  • Service and maintenance without process interruption
  • Output signal 4-20 mA

Extensions and accessories

MiniCal III

Ion-selective ammonia measurement of cooling circuits
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MiniCal III
Flow Fitting

Fitting for use on unpressurised pipelines
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MiniCal III
Immersion Fitting

Fitting for measurements in basins, containers or canals
» more

MiniCal III

Especially for monitoring synthetic refrigerants
» more

Accessories MiniCal III

Here you'll find the complete list of accessories for the MiniCal III
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