Vane Wheel Flow Sensors FA
Sensors for measuring in air/gases and water/liquids for stationary and mobile use
 
Vane wheel flow sensors FA  
principle of measurement
 
Instrumentation  
 
Cylinder probes  
 
Inline-sensors / measuring tubes  
 
Evaluation units  
 
Housings  
 
principle of measurement up

The principle of measurement is based on the fact that a vane wheel rotates at a speed proportional to the flow velocity of a fluid into which it is immersed. The rotational speed is almost independent of density, pressure and temperature of the medium.

The sensing of the vane wheel rotation is by means of a proximity switch without the slightest braking effect on the vane wheel. By fitting a further proximity switch, sensing of the direction of the vane wheel rotation and the indication of the +/-direction of flow is made possible.

Determined by its light weight, the vane wheel rotational speed adapts in milliseconds to velocity increases, even when
being used in gases.


All vane wheel flow sensors are calibrated on the same frequency, so that sensors of the same type are interchangeable.

Instrumentation up
A combination of vane wheel flow sensor FA and a suitable evaluation unit is necessary for successful measuring.
Cylinder probes up
Cylinder probes ZS
   
Cylinder probes ZS  
   
Cylinder probe ZSR
Insertion probe for ± direction sensing
   
  Flowtherm cylinder probe FT
Insertion probe with integrated Pt100 probe for measuring temperature
   
  Special specifications
   
Special specifications
 
  such as cylinder probe with protective mesh or T-probes for achieving
a higher rate of indirect oncoming flow indifference
   
Types of cylinder probes
 
  initial smallest measurable flow rate dependent on type of vane wheel:
in gases 0.2...1.6 m/s; in liquids 0.01...0.08 m/s
   
  terminal flow rate dependent on type of vane wheel:
in gases 3 m/s; 20 m/s; 40 m/s; 80 m/s;120 m/s; in liquids: 3 m/s; 7.5 m/s; 10 m/s; condition: no cavitation
   
  probe diameter: 14/15 mm; 16 mm; 18 mm; 18/20 mm; 25 mm; 25/27 mm and 30 mm
   
  working temperature range: up to +100° C; +140 °C; +260 °C; +370 °C; +450 °C and +500 °C
   
  maximum working pressure: up to 25 bar overpressure
   
  explosion-proof type of protection: Category 1G and 1D Zone 0 and Zone 20; Category 2G and 2D Zone 1 and Zone 21
   
  probe tube material: aluminium, stainless steel, titanium
   
  special designs on request
   
Accessories for cylinder probes    
   
  Probe tubes/extension rods  
probe tubes/extension rods for screwing onto extendable
cylinder probes
   
  Probe guide pieces  

probe guide pieces with flange or screw thread connection for installing cylinder probes in pipelines and ducts

   
  Direction indicators  
direction indicator for clamping onto the probe tube;
may also be used as a depth indicator
Inline-sensors / measuring tubes up
FA·Di measuring tubes
for recording volume flow / flow velocity
  FAR·Di
 
  for measuring volume flow/flow velocity
for ± direction sensing
 
  FAR·Di
   
  Special specifications
   
   

also available with integrated temperature
probe Pt100 and / or built-in absolute pressure gauge
   
Types of FA·Di measuring tubes
 
  measuring tube inside diameter: 9.7 mm; 18.2 mm; 25 mm; 32 mm; 40 mm; 50 mm ...
   
  alternative forms of connection depending on inside diameter of measuring tube:
tube fittings; cutting ring fittings; flange connection;
flat tube ends; internal screw thread for connecting nipples
   
  alternatively with / without input / output section
   
  initial smallest measurable flow rate dependent on type of vane wheel: in gases from 0.08 m³/h,
in liquids 0.007 m³/h
   
  terminal flow rate dependent on type of vane wheel: in gases 20 m/s; 40 m/s; 80 m/s;120 m/s;
in liquids: 3 m/s; 7.5 m/s; 10 m/s
   
  working temperature range: -20° C...+100 °C; -20 °C...+240 °C and above
   
  maximum working pressure: up to 25 bar above atmospheric
   
  materials: stainless steel; PVDF; aluminium ...
   
  explosion-proof type of protection: Category 1G and 1D Zone 0 and Zone 20; Category 2G and 2D Zone 1 and Zone 21
   
  special designs on request
Evaluation units up
     
HFA
     
  HFA   hand-held instrument for connection to all Höntzsch standard vane wheel flow probes and +/- directional sensing probes as well as those with integrated temperature probe
     
    input (8-pin flange socket) with software selection for connection of designated sensor type
     
    high-contrast LCD liquid crystal display, measured value display 13 mm high four-digit with decimal point as well as affiliated display unit, display of duration of measurement in seconds 6 mm high, adjustment and configuration instructions, operator´s information, status displays 3 mm high
     
    interface RS232 for direct transfer of the stored measured values to a PC
     
    instantaneous values every second. Display of actual velocity v, actual volume flow V/t or temperature (dissipation 0.1 °C,), selectable. Display of instantaneous value in the START and also START/STOP mode also with long-term measurement. Display units: m/s, m³/h, l/min, °C
     
    power supply by 9V compound battery or alternatively by mains supply circuit
     
    analog output FA:
0 ... 4 V = 0 ... x m/s, FAR: 0 ... 2 ... 4 V = - x ... 0 ... + x m/s, x = variable
Data and measured value storage for 1000 data records. When being stored the data records are automatically marked with a group number (up to 99 maximum) and serial number.
       
   
HFA-Ex
       
HFA-EX   hand-held instrument in ATEX EEx ia IIC T4 type of protection to which all Höntzsch standard vane wheel probes, including those sensing ± flow direction and with integrated temperature probe, can be connected
     
    input (8-pin flange socket) software commutable for connection of designated type of sensor
     
    high-contrast LCD liquid crystal display, measured value display 13 mm high four-digit with decimal point as well as affiliated display unit, display of duration of measurement in seconds 6 mm high, adjustment and configuration instructions, operator's information, status displays 3 mm high
     
    interface RS232 for direct transfer of the stored measured values to a PC
     
    instantaneous values every second. Display of actual velocity v, actual volume flow V/t or temperature (resolution 0.1 °C), selectable.
Display of instantaneous value in the START and also START/STOP mode
also with long-term measurement. Display units: m/s, m³/h. l/min, °C
     
    power supply by Li-Ion accumulator. Charge by using the appropriate charger in the 6-pin flange socket. Charging time approx. 4 hours, running time approx. 50 hours
     
    analog output
FA: 0 . 4 V = 0 . x m/s
FAR: 0 . 2 . 4 V = - x . 0 . + x m/s, x = variable
     
    Data and measured value storage for 1000 data records. When being stored the data records are automatically marked with a group number (max. 99) and serial number
     
Transducers U1a / U2a
     
  Umformer U1a   for connection of vane wheel flow sensors FA with and without direction sensing without display and keypad
     
    analog output: 4-20 mA, 0-20 mA, 0-4 V, 0-10V; optional
     
    optional relay output for direction of flow
     
    power supply: 230 VAC, 110 VAC, 24 VAC, 24 VDC and 12 VDC; optional
     
    designs: LDG16 miniature housing (W/H/D = 55/75/110) for 35 mm standard assembly rails, aluminium housing AS102 IP65 (W/H/D = 100/75/110 mm)
     
    factory settings: type of vane wheel, type of medium, scaling the output
     
Transducer UFA integrated in AS080 sensor connection housing
     
  Umformer AS80   Configurable digital transducer with IP65 type of protection
     
integrated in the sensor connection housing of vane wheel flow probes FA / FAR or measuring tubes FA Di
    PC interface for changing the calibration and parameter data
     
    analog output: 4-20 mA, 0-10 V; optional
     
    relay output optional for flow direction, limit value or quantity pulse configurable
     
    power supply: 24 VDC
     
    design: aluminium housing AS080 IP65 (W/H/D = 80/80/60 mm)
conversion from actual to standard flow velocity or, alternatively, flow rate
optional LCD display for instantaneous value and counter
     
Transducer UFA integrated in Ex-d sensor connection housing
     
  Umformer Sensor   integrated transducer in Ex-d sensor connection housing for vane wheel flow probes FA / FAR or measuring tubes FA Di
     
    Hart interface for changing the calibration and parameter data
     
    Ex-protection: Category I Zone 0 and 20, Category II Zone 1 and 21
     
    analog output: 4-20 mA
     
    relay output optional for flow direction, limit value or quantity pulse configurable
     
    optional LCD display for instantaneous value and counter
power supply: 24 VDC
     
Transducer UFA / LDG16
     
  Umformer LDG16   Configurable digital transducer
     
for vane wheel flow sensors FA with and without
directional sensing
    PC interface for changing calibration and parameter data analog output: 4-20 mA, 0-10 V; optional
     
    relay output optional for flow direction, limit value or quantity pulse configurable
     
    power supply: 230 VAC; 24 VDC and 12 VDC; optional
     
    design: LDG16 surface mounting housing (W/H/D = 55/75/110) for 35 mm
standard assembly rail
     
    conversion from actual to standard flow velocity
or, alternatively, flow rate
     
Transducer UFA / AS102
     
  Umformer AS102   Configurable digital transducer with IP65 type of protection
     
for vane wheel flow sensors FA with and without directional sensing
    PC interface for changing calibration and parameter data analog output: 4-20 mA, 0-10 V; optional
     
    relay output optional for flow direction, limit value or quantity pulse configurable
     
    optional LCD display with instantaneous value and counter
     
    power supply: 230 VAC; 24 VDC and 12 VDC; optional
     
    design: aluminium housing AS102 IP65 (W/H/D = 100/75/110 mm)
conversion from actual to standard flow velocity
or, alternatively, flow rate
         
LDX1A / LDX2
     
LDX1A ATEX isolation/supply unit for connection of vane wheel flow sensors FA with and without direction sensing in EEx ia IIC T6 type of protection
operation only permissible with non-Ex evaluation units: transducer U1a or transducer U2a or system instrument in LDG30 housing (see below)
 
LDX1A ATEX and secondary evaluation unit are to be placed in a non-hazardous space
 
power supply: 230 VAC, 24 VAC; optional; DC supply with series connected DC/AC converter possible!
LDG16 miniature housing (W/H/D = 55/75/110) for 35 mm standard
assembly rails
     
System instruments with display and keypad
     
  System instruments with display and keypad   µP-ASD
for connection of vane wheel flow sensors FA
     
    µP-ASD-R
for connection of ± direction sensing vane wheel flow sensors FA
     
    VT-FA
for connection of vane wheel flow sensors FA and Pt100 temperature probes, pressure as input value
     
    VP-FA
for connection of vane wheel flow sensors FA and absolute pressure gauges, temperature as input value
     
    VTP-FA
for connection of vane wheel flow sensors FA, Pt100 temperature probes and absolute pressure gauges
   
Types available
 
  optional with Ex-inputs for connection of vane wheel flow sensors FA. Pt100 temperature probes and pressure gauges with explosion-proof type of protection (not in LDG30 housing; in addition LDX1A ATEX isolation/supply unit (see above) needed here)
   
  analog output flow (in the case of V(T)(P) instruments pressure, temperature optional): 0/4-20 mA, 0-5 V, 0-10 V, optional
   
  optional RS232 / V24 output (not in LDG30 housing, see below)
   
  optional relay output for flow direction or quantity impulse
   
  power supply: 230 VAC, 24 VAC, 24 VDC; optional; in the case of system instruments in table housing Ti-SRF supply by accumulator also possible
   
  housing variants as in the drawings below
   
  software options: quantity measurement, long-term measurement, limit value, password, data logger,
failure monitoring and more
   
  multi-channel instruments and special designs on request
Housings up
system instruments µP-ASD, µP-ASD-R, VT-FA, VP-FA and VTP-FA for connection of vane wheel flow sensors FA
   
   
  LDG30
  LDG30: miniature housing W/H/D = 100/75/110 mm for 35 mm standard assembly rails
   
   
  EMV-AH162
  EMV-AH162:
for wall mounting, IP65 type of protection, with screwed cable glands, for
installation of 1 evaluation unit in LDG16 housing as well as 1 evaluation
unit in LDG30 housing W/H/D = 240/160/134 mm
   
   
  EMV-AH160
  EMV-AH160:
for wall mounting, IP65 type of protection, with screwed cable glands, for
installation of 1 evaluation unit in LDG30 housing
   
   
  Wa-IP65
  Wa-IP65: wall-mounted W/H/D = 306/241/264 mm
   
   
  Ti-SRF
  Ti-SRF: free-standing W/H/D =365/155/315 mm
   
   
  19
  19”3HE: slide-in housing W/H/D = 443/133/317 mm
   
   
  Cassette
  Cassette: 3HE 28TE, 3 cassettes in one empty 19" housing
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