The FLOWSIC200 is used for the contact-free and accurate measurement of flow velocity and flow direction inside tunnels or exhaust ventilation ducts. Ultrasonic technology provides the cross-sectional mean average value of the flow velocity. This device is used for measurement necessary for optimal ventilation control and reducing running costs to a minimum when air flow is dictated by climatic conditions or by traffic.
In case of fires in tunnels the accurate, reliable and representative measurement of air velocity and direction across the tunnel is mandatory. This is the only way to check reliably the smoke propagation and to achieve the necessary information for optimal control of the ventilation system.
At a glance
| Very large measuring distance possible |
| Contact-free measurement |
| Extremely rugged compounds made of titanium, stainless steel or die cast |
| Versions for very corrosive atmospheres |
| Determination of flow direction |
| No mechanically moving parts |
Your benefits
| Representative measurement across total tunnel width |
| Very reliable measurement, compared with punctual measurement methods |
| Accurate measurement of low flow velocities |
| Long maintenance intervals up to 5 years |
| Low operational costs due to reliable operation and low maintenance |
| High availability of devices and therefore also of measurement data |
Fields of application
| Measurement in road and railway tunnels |
| For control of tunnel ventilation |
| For detection of smoke propagation |
| Technical data | |||
| Measurement principle: | Ultrasonic transit time difference measurement | ||
| Max. number of measurands: | 1 | ||
| Measuring ranges: | Flow velocity: -20 ... 20 m/s | ||
| Comment: | Continuously adjustable | ||
| Length of measuring path: | 5 ... 40 m depending on device version; larger measuring paths on request |
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| Ambient temperature: | -40 ... +60 °C | ||
| Ambient humidity: | 0 ... 100 % relative humidity |
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| Conformities: | ASTRA "Guideline - Ventilation of Road Tunnels" (2004, V1.2) RABT 2006 RVS 09.02.22 |
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| Electrical safety: | CE | ||
| Enclosure rating: | Sender/receiver units: IP 66 MCU control unit: IP 65 |
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| Analog outputs: | 1 output: 0/2/4 ... 22 mA, 750 Ω additional outputs if using I/O modules |
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| Analog inputs: | 2 inputs: 0 ... 20 mA , 0 ... 10 V additional inputs if using I/O modules |
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| Digital outputs: | 5 outputs: 120 V AC, 1 A 30 V DC, 2 A floating; for status signals; extendible by additional I/O modules |
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| Digital inputs: | 4 inputs for connection of floating contacts; extendible by additional I/O modules |
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| Interfaces: | RS-232 RS-485 (option) USB (service interface) |
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| Bus protocol: | Ethernet TCP/IP (option) Modbus (on request) PROFIBUS DP (option) |
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| Operation: | Via LC-display or software SOPAS ET | ||
| Device version: | Aluminium cast housing, Stainless steel housing | ||
| System components: | Connection unit Sender/receiver units MCU control unit |
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| Diagnostics functions: | Internal zero and reference point check | ||
| Mounting: | Typical hight above lane: 4,2 m; 45° ... 60° to tunnel axis | ||
The FLOWSIC200 is used for the contact-free and accurate measurement of flow velocity and flow direction inside tunnels or exhaust ventilation ducts. Ultrasonic technology provides the cross-sectional mean average value of the flow velocity. This device is used for measurement necessary for optimal ventilation control and reducing running costs to a minimum when air flow is dictated by climatic conditions or by traffic.
In case of fires in tunnels the accurate, reliable and representative measurement of air velocity and direction across the tunnel is mandatory. This is the only way to check reliably the smoke propagation and to achieve the necessary information for optimal control of the ventilation system.
At a glance
| Very large measuring distance possible |
| Contact-free measurement |
| Extremely rugged compounds made of titanium, stainless steel or die cast |
| Versions for very corrosive atmospheres |
| Determination of flow direction |
| No mechanically moving parts |
Your benefits
| Representative measurement across total tunnel width |
| Very reliable measurement, compared with punctual measurement methods |
| Accurate measurement of low flow velocities |
| Long maintenance intervals up to 5 years |
| Low operational costs due to reliable operation and low maintenance |
| High availability of devices and therefore also of measurement data |
Fields of application
| Measurement in road and railway tunnels |
| For control of tunnel ventilation |
| For detection of smoke propagation |
| Technical data | |||
| Max. number of measurands: | 1 | ||
| Measurement principle: | Ultrasonic transit time difference measurement | ||
| Measuring ranges: | Flow velocity: 0 ... ± 20 m/s | ||
| Diagnostics functions: | Internal zero and reference point check | ||
| Ambient temperature: | -40 ... +60 °C | ||
| Ambient humidity: | 0 ... 100 % relative humidity |
||
| Conformities: | ASTRA "Guideline - Ventilation of Road Tunnels" (2008) RABT 2006 RVS 09.02.22 |
||
| Electrical safety: | CE | ||
| Enclosure rating: | Sender/receiver units: IP 66 MCU control unit: IP 65 |
||
| Analog outputs: | 1 output: 0/2/4 ... 20 mA, 750 Ω additional outputs if using I/O modules |
||
| Analog inputs: | 2 inputs: 0 ... 20 mA , 0 ... 10 V additional inputs if using I/O modules |
||
| Digital outputs: | 5 relay outputs (change-over contacts), potential-free: 48 V AC, 1 A safety extra-low voltage; for status signals "operation/malfunction", "limit value", "warning", "maintenance" and "check cycle" |
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| Digital inputs: | 4 potential-free contacts additional inputs if using I/O modules |
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| Interfaces: | RS-232 (via clamp terminal; service interface) RS-485 (for connection of sender/receiver unit(s)) USB 1.1 (virtual COM port; service interface) |
||
| Bus protocol: | Ethernet TCP/IP (via optional interface module) Modbus (via optional interface module) Modbus TCP (via optional interface module) PROFIBUS DP (via optional interface module) |
||
| Operation: | Via LC-display or software SOPAS ET | ||
| Device version: | FLSE200-H-M/-H: stainless steel enclosure, titanium sensor FLSE200-M: aluminium cast housing, aluminium sensor |
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| System components: | Connection unit Sender/receiver units MCU control unit |
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| Mounting: | Typical hight above lane: 4,2 m; 45° ... 60° to tunnel axis | ||