Gems Sensors - PRODUCT NEWS

Sensor measures extremely low liquid
flow levels to high accuracy.

The new FT-2 10 liquid flow sensor from Gems Sensors
measures very low flow levels, down to as low as
100 ml 1mm, with typical accuracy ±3% of reading.
Operating with liquids with viscosities of up to I 5cSt,
this means that the unit is ideal for many applications,
including medical equipment.

The FT-2I0 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 features 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 easily transmitted to local or remote electrical

This operating principle provides continuous output, allows bidirectional
operation and means that the unit can be mounted in any orientation.
The full range of the FT-2 10 is 1/mm, at temperatures between
-20 and + 100°C and pressures up to 25 bar. Bursting pressure is 200 bar.

The body of the unit is constructed in Grilamid TR55, an amorphous
thermoplastic which features high chemical and stress crack resistance
combined with excellent transparency. The rotor is PA 12 Ferrit running
in PTFElgraphite 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: G /4 in or /4 NPT.

For more information, please contact :-
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November 2005
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