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PVR

Your are now in the overview of an article: PVR
Choose a version from the table underneath, please.

Description:
Direct measurement principle for thermal mass flow meter with
sensor working according to constant temperature anemometer
principle. Only PVR11 measures the flow directly.

Features:
Low pressure drop and immune to dirt and humidity. Measurement
unaffected by pressure and temperature changes. No moving parts,
installation in virtually any position.

Principle:
Two stainless steel probes – a heater and temperature probe
– protrude inside the bore. A constant difference in temperature
is created. The energy required is proportional to flow.

Media: compressed air, nitrogen, argon and oxygen as standard;
calibration is necessary for other gases.

Mechanical_design:
PVR11/23: flow regulator and flow meter in the same housing
PVR25: flow regulator and flow meter on the same measurement body
PVR27: flow regulator and flow meter are individual components assembled jointly.

Conversion_factors:
The flow meter is normally calibrated on air. For other gases, a
conversion factor must be applied. This factor is determined by
applying a complex formula. The value is given below.

Temperature_range: 0 °C to 50 °C / 32 °F to 122 °F
Operating_pressure: max. 10 bar
Differential_pressure: max 5 bar

Body: aluminium, optionally SST 316L
Elastomer: FKM, optionally EPDM or Kalrez
Sensor: stainless steel 316L
Filter/strainer: stainless steel

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