Flow levels checked down to 100ml/min

A Gems Sensors product story
Edited by the Engineeringtalk editorial team Jan 18, 2006

The FT-210 liquid flow sensor from Gems Sensors measures flow levels down to 100ml/min, with typical accuracy +/-3% of reading.

The FT-210 liquid flow sensor from Gems Sensors measures flow levels down to 100ml/min, with typical accuracy +/-3% of reading.

Operating with liquids with viscosities up to 15mm2/s means the unit suits various applications, including medical equipment.

It is based on the Hall effect, in which a transverse voltage is produced if a conductor with current passing through it meets a magnetic field.

The unit has a bladed ferrite rotor which turns in the liquid flow.

Each pass of a blade past the sensor generates a frequency pulse which is equivalent to a discrete volume of liquid, and directly proportional to the rotor angular velocity and hence the flow rate.

The waves are transmitted to local or remote electrical instrumentation.

This operating principle provides continuous output, allows bidirectional operation and means the unit can be mounted in any orientation.

The full range is 0.1 to 2.5 l/min, at temperatures between -20 and +100C and pressures up to 25bar.

Bursting pressure is 200bar.

The body of the unit is constructed in Grilamid TR55, an amorphous thermoplastic with high chemical and stress crack resistance and transparency.

The rotor is PA12 Ferrit running in PTFE/graphite bearings.

All units are 100% tested before despatch, and the FT-210 is maintenance free once installed.

Electrical connection is via a mini Din connector to EN60529, supplied as standard, and two end connections are available.

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