Ontrol provides some of the best products for measuring pressure. Typical application in HVAC systems are pump and fan speed control, filter condition monitoring, system pressure monitoring for emergency overrides...

Differential pressure switch

Adjustable differential pressure switch for monitoring overpressure, vacuum and differential pressure of air or other non-combustible, non-aggressive gases.

The switching pressure can be adjusted without a pressure gauge using a scaled adjustment knob. Various versions with overlapping adjustment ranges between 0.2 mbar and 50 mbar are available for this purpose. As standard, the pressure switch is equipped with a transparent cover of protection class IP54.

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Applications

  • Monitoring air filters and ventilators
  • Monitoring industrial cooling-air circuits
  • Overheating protection for fan heaters
  • Monitoring flows in ventilation ducts
  • Controlling air and fire-protection flaps
  • Frost protection for heat exchangers
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Differential Pressure Transmitter

The differential pressure transmitters of the 984 series are used to measure differential pressure, overpressure and vacuum. They provide up to 8 pressure ranges and 2 output signals, which are easily selectable by jumper or rotary selector switch.

For an optimum adaptation to the application, the transmitter can be switched between various pressure ranges. The factory setting is the most sensitive range. For the series 984M and 984A the less sensitive second range will be selected by simply removing a jumper. For the series 984Q the available eight ranges can be selected by a rotary selector switch.

Applications

  • Building automation and air conditioning systems
  • Overpressure measurement in clean rooms and laboratories
  • Measurement of constant pressure in VAV applications
  • Dynamic filter and ventilator monitoring
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Product Range
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Differential Pressure Transmitter (air)

The differential pressure transmitters of the 984 series are used to measure differential pressure, overpressure and vacuum. They provide up to 8 pressure ranges and 2 output signals, which are easily selectable by jumper or rotary selector switch.

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Differential Pressure Switch (air)

Adjustable differential pressure switch for monitoring overpressure, vacuum and differential pressure of air or other non-combustible, non-aggressive gases.

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Pressure Transmitter (water)

Water pressure transmitter VPL 16 is designed to detect pressures at the HVAC automation systems. The pressure is measured with ceramic sensor element. Allowed mediums are water, water/glycol mixtures, air and oils

VPL 16 has four selectable ranges up to 16 bar, and VPL 60 has four selectable ranges up to 60 bar.

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Differential Pressure Transmitter (water)

VPEL differential pressure transmitter is designed for measuring water/glycol pressures in heating and cooling systems. The transmitters can measure differential pressure and over/under pressures.

Each unit has two measurement ranges, selectable at the time of commissioning.

Air Pressure
Pressure switches
Pressure sensors
Water Pressure
Water Pressure Transmitters
Water Differential Pressure Transmitters