1 Electronic Flow Meter FC01 - FlowVision GmbH

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FC01 - Monitoring TST-..HM2Monitoring head with turbine-type sensorDescriptionThread mounted monitoring head with turbine-type sensor for FlowMeter FC01. Recommended for high medium temperature applications.The unit consists of the turbine HM2 and a pre-amplifier which isconnected with the HM2 by means of a 2 m cable.1Features● Medium temperature 0 °... +250 °CTST-..HM2Technical dataType of headNominal thread dia.Length of shankLength of sensorSuitable forthread-mounted monitoring headG1/2A36 mm19 mmwaterairTemperature rangeMedium: 0...+250 °C air *)Monitoring head (to medium): 0...+250 °C(to electrical connection): 0...+250 °CPreamplifier: -10...+50 °CMeasuring range air: 1...20 m/swater: 0.1...5 m/sPressure resistance (1)10 bar/147 PSI(please enquire for higher pressure)Degree of protectionMonitoring head/cableIP68Monitoring head/cable connector IP67PreamplifierIP65Material fitting stainless steel 1.4571/AISI 316 TiMaterials of wetted parts- housing and turbine: chrome nickel/molybdenum steel VUA- bearings: jewel bearing sapphirepivot bearing NivadurCable to LifYCY 3 x 0.35 mm 2 (AWG 24)electronic control unitOrdering informationTypeTSTthread-mounted monitoring head with turbine-type sensorProcess connection01 G1/2A threadApplication range - Material of the area exposed to mediumHM2 +250 °C, air 20 m/s, water 5 m/s - stainless steel,jewel bearing, hardened tips, incl. 2 m connecting cableto the pre-amplifierLength of shank/threadL10 36 mm (standard)Accuracy0 ±1 % of final value, ±3 % of measured value(standard)Electrical connection to FM 1E10 round connector with tinned contacts(plug and cable to separate order)TST - 01 HM2 L10 0 E10 ordering exampleDimensions of monitoring head TST-..HM2G1/2A(1) Admissible operating pressure to DIN 2401, measured at max. temperature(= max. medium temperature)(2) with mating connector*) Please observe that ice build up on the sensor at water temperatures ≤ 0 °C will destroythe sensor.501.97ø11.433361.42SW 271.06 in.approx. 2 mto preamplifierThis is a metric design and millimeter dimensions take precedence ( mm )inch1 - 62www.e-t-a.comIssue A(010108)
FC01 - Turbine-type monitoring heads (TST)Preamplifier for monitoring head TST-..HM2Advantages of mechanical flow rate sensing● Wide medium temperature range: 0 °C to +250 °C,independent of temperature variations● Short reaction time35641.38 2.52ground GND23 1582.28Limitations:● not suitable for media with solid particles● can be overloaded only to a limited extent● measuring signals depend on the viscosity of the medium● shock-sensitive1output Uafrom monitoring head HM2Installation of monitoring headDescriptionElectronic flow meters with mechanical sensing rely upon a turbinemounted in the pipeline. The rotational speed of the turbine in theflowstream is proportional to the flow rate. Turbine rotation is remotelymeasured by an inductive proximity switch and transmitted as afrequency signal to the electronic control unit.Mechanical sensing by means of turbine-type sensors isrecommended:● where temperatures may be above the temperature range of thecalorimetric heads (>130 °C),● where the media may change,● where the properties (thermal conductivity) of the medium mayvary significantly,● for media with air bubbles,● where an immediate response to flow rate changes is required.Flow monitoring is often necessary in places that are not accessibleand where practical difficulties may prevent the correct alignment ofthe sensors with respect to flow direction. The special aerodynamicshape of the E-T-A sensors reduces this danger. The followingdiagram clearly shows that the “streamlined” E-T-A sensors have avery good alignment angle.error(at 10 m/s) Streamline sensors are largely insensitive tooblique streaming (symmetrical to 0° line)± 1.5 % system+10 % tolerance band +25° -25°0-10 %-20 %streamline sensorMonitoring head with turbine-type sensor+40° +30° +20° +10° 0 -10° -20° -30° -40°oblique streamingpipeturbineIssue A(010108)www.e-t-a.com 1 - 63
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1 Electronic Flow Meter FC01 - FlowVision GmbH

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