Thermal Dispersion Mass Flow Meter - Series Scirocco

The Thermal Dispersion Mass Flowmeter, Series Scirocco 1000 measuring principle is based on the fact that heat is drawn from a heated body when a fuid flows past. A Thermal Dispersion Mass Flowmeter contains two Platinum RTD temperature sensors for this purpose. One sensor measures the current fluid temperature as a reference. The second sensor is heated and has a constant temperature differential relative to the first sensor. When the flow of air/gas starts heat is taken away from the warmer sensor. The amount of heat taken away is having a direct relation with the mass velocity of the fluid. This eliminates the need for temperature and pressure compensation. Thermal Dispersion Mass Flowmeter, Series Scirocco 1000 is available with insertion probe type or Complete Spool type with proper end connection. Insertion probe can be installed directly on the pipe carrying compressed air, with the help of clamps supplied along with probe.


  • Direct measurement of mass flow
  • No pressure or temperature compensation required
  • 40:1 turndown ratio
  • Wireless data transfer possible Remote readings available on wireless
  • Pulse, milliamps or RS485 output for networking
Thermal Dispersion Mass Flowmeter

Thermal Dispersion Mass Flowmeter, Scirocco 1000

Available Sizes

Scirocco 1000-1 and Scirocco 1000-2

Nominal Size Range Nm3/Hr. Range SCFM
DN 15 69 40
DN 20 122 72
DN 25 190 112
DN 32 312 184
DN 40 487 287
DN 50 761 448
DN 65 1287 757
DN 80 1949 1147
DN 100 3046 1793
DN 150 6853 4034
DN 200 12184 7171


  1. Nm3/hr is defined at 21.11°C, 101.325 kPa
  2. *This is only for clean and dry compressed air.
  3. For other gases contact factory with more details.
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Scirocco 1000-1 and Scirocco 1000-2

Model No Scirocco 1000-1 & Scirocco 1000-2
Scirocco 1000-1 Sensor and transmitter, can be mounted directly on service pipe just by drilling holes with clamps provided
Scirocco1000-2 Complete with spool with an end connection of flange /BSP(M) Threading
Service Fluid Dry & Clean compressed Air / Gas. (Ex. Biogas, CNG, LPG, PNG & LNG etc.)
Line Size DN15 to DN200 - DN125 not available (For others consult factory)
End Connection Clamp / Flange (DN20-DN200) Threaded (BSP-F) (DN15 - DN20)
Accuracy ±3 % of Actual Flow Rate between 100% to 10% of Flow rate
Flow Velocity Range 5 m/s to 100 m/s max (at NTP Condition)
Flow Range As per Table 1 above
Display Blind/LCD 16/2
Output 4-20 mA/RS 485, Pulse, Wireless Data Transfer
Power Supply 24Vdc/300mA Operating voltage between 20V to 28V 230Vac with Adaptor
Operating Fluid Temp. 0 - 100 C
Operating Fluid Pressure 20 Bar Max (other on request)
Wireless Data on Communication
Mobile (mobile app available) Instantaneous flow rate and total flow display on mobile With or without External antenna - WiFi 2dBi 2.4Ghz flexible Antenna
Operating Ambient Temperature 0 - 50 C
Temperature Drift at Ambient Temp 0.008 % / C maximum of Full Scale in the range 0 to 60 C
Ingress Protection IP 65 for Transmitter (Sensor Excluded)
Scirocco 1000-2(Threaded)
Scirocco 1000-2 (Threaded)
Scirocco 1000-1 (Clamp type)
Scirocco 1000-1 (Clamp type)
Scirocco 1000-2 (Flanged End)
Scirocco 1000-2 (Flanged End)
Scirocco 1000-2 Encloser Gas Group IIB Exd IP66 (Flameproof)
Scirocco 1000-2 Encloser Gas
Group IIB Exd IP66 (Flameproof)


Sample code explained: Scirocco - 1000-1 - DN 25 - RS4 - P O/P WR - 3