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• Proven ultrasonic transit time measurement technology
• Measurement independent of temperature, pressure and composition of the tunnel atmosphere
• Choice of interface options enabling easy integration into tunnel control system
• CROSSFLOW-T model with integrated temperature sensor
• Optional extended warranty and 5 year refurbishment programs are available
• Rugged construction design to withstand corrosive tunnel atmospheres and regular tunnel washing
• Pre-calibrated “Fit and Forget” transceiver
• Prewired interconnecting cable and termination points saves time during the installation
• No moving parts and low maintenance requirements
• The CROSSFLOW is designed to tolerate high sided vehicles momentarily passing through the Ultrasonic signal path ensuring uninterrupted air flow readings.
Specification
Measurement Performance – Air Flow
|
No. |
Parameter |
Units |
Min |
Max |
Comment |
|
1 |
Measuring Principle |
Ultrasonic transit time (open path) |
|||
|
2 |
Measurement Path |
m |
5 |
25 |
CROSSFLOW |
|
3 |
Measurement Range |
m/s |
-20 |
+20 |
User selectable |
|
4 |
Measurement Angle |
deg |
30 |
60 |
|
|
5 |
Resolution |
m/s |
0.1 |
Display resolution |
|
|
6 |
Accuracy |
m/s |
-0.1 |
+0.1 |
|
|
7 |
Damping |
seconds |
1 |
999 |
User selectable |
Measurement Performance – Air Temperature
(Crossflow-T only)
|
No. |
Parameter |
Units |
Min |
Max |
Comment |
|
8 |
Measuring Principle |
RTD |
|||
|
9 |
Measurement Range |
°C |
-20 |
+70 |
User selectable (also available as °F) |
|
10 |
Resolution |
°C |
0.1 |
Display resolution |
|
|
11 |
Accuracy |
°C |
-0.5 |
+0.5 |
|
|
12 |
Damping |
seconds |
1 |
999 |
User selectable |
Power
|
No. |
Parameter |
Units |
Min |
Max |
Comment |
|
13 |
Voltage |
Vdc |
+24 |
||
|
14 |
Voltage Tolerance |
% |
-10 |
+10 |
|
|
15 |
Nominal Current Consumption |
mA |
300 |
||
|
16 |
Power Up Current Consumption |
mA |
300 |
Interface Options
|
No. |
Parameter |
Units |
Min |
Max |
Comment |
|
17 |
Serial Outputs |
Modbus RTU via RS485 |
|||
|
18 |
Analogue Outputs (two) |
mA |
0 /2 /4 |
20 |
Isolated and scalable (user selected) |
|
19 |
Digital Relay Contacts (three) |
A |
0 |
3 |
@30Vdc (signal level and data valid) |
Physical
|
No. |
Parameter |
Units |
Min |
Max |
Comment |
|
20 |
Ingress Protection |
IP67 |
|||
|
21 |
Operating Temperature |
°C |
-25 |
+55 |
|
|
22 |
Operating Humidity |
% |
100 |
||
|
23 |
Operating Pressure |
hPa |
600 |
1100 |
|
|
24 |
Materials |
|
|||
|
25 |
Dimensions |
mm |
96 x 158 x 197 Each head (without dust tube) |
||
|
26 |
Weight |
kg |
2.5 |
Each head |
|
|
27 |
Regulatory Compliance |
2014/30/EU (Electromagnetic Radiation) |
|||
|
28 |
Design Life |
Years |
20 |
||
|
29 |
MTBF |
Years |
>20 |
||
|
30 |
Warranty |
Months |
24 |
Return to base warranty. Extensions available |
Do you have any questions?
We would be more than happy to help you.
• Proven ultrasonic transit time measurement technology
• Measurement independent of temperature, pressure and composition of the tunnel atmosphere
• Choice of interface options enabling easy integration into tunnel control system
• CROSSFLOW-T model with integrated temperature sensor
• Optional extended warranty and 5 year refurbishment programs are available
• Rugged construction design to withstand corrosive tunnel atmospheres and regular tunnel washing
• Pre-calibrated “Fit and Forget” transceiver
• Prewired interconnecting cable and termination points saves time during the installation
• No moving parts and low maintenance requirements
• The CROSSFLOW is designed to tolerate high sided vehicles momentarily passing through the Ultrasonic signal path ensuring uninterrupted air flow readings.
Specification
Measurement Performance – Air Flow
|
No. |
Parameter |
Units |
Min |
Max |
Comment |
|
1 |
Measuring Principle |
Ultrasonic transit time (open path) |
|||
|
2 |
Measurement Path |
m |
5 |
25 |
CROSSFLOW |
|
3 |
Measurement Range |
m/s |
-20 |
+20 |
User selectable |
|
4 |
Measurement Angle |
deg |
30 |
60 |
|
|
5 |
Resolution |
m/s |
0.1 |
Display resolution |
|
|
6 |
Accuracy |
m/s |
-0.1 |
+0.1 |
|
|
7 |
Damping |
seconds |
1 |
999 |
User selectable |
Measurement Performance – Air Temperature
(Crossflow-T only)
|
No. |
Parameter |
Units |
Min |
Max |
Comment |
|
8 |
Measuring Principle |
RTD |
|||
|
9 |
Measurement Range |
°C |
-20 |
+70 |
User selectable (also available as °F) |
|
10 |
Resolution |
°C |
0.1 |
Display resolution |
|
|
11 |
Accuracy |
°C |
-0.5 |
+0.5 |
|
|
12 |
Damping |
seconds |
1 |
999 |
User selectable |
Power
|
No. |
Parameter |
Units |
Min |
Max |
Comment |
|
13 |
Voltage |
Vdc |
+24 |
||
|
14 |
Voltage Tolerance |
% |
-10 |
+10 |
|
|
15 |
Nominal Current Consumption |
mA |
300 |
||
|
16 |
Power Up Current Consumption |
mA |
300 |
Interface Options
|
No. |
Parameter |
Units |
Min |
Max |
Comment |
|
17 |
Serial Outputs |
Modbus RTU via RS485 |
|||
|
18 |
Analogue Outputs (two) |
mA |
0 /2 /4 |
20 |
Isolated and scalable (user selected) |
|
19 |
Digital Relay Contacts (three) |
A |
0 |
3 |
@30Vdc (signal level and data valid) |
Physical
|
No. |
Parameter |
Units |
Min |
Max |
Comment |
|
20 |
Ingress Protection |
IP67 |
|||
|
21 |
Operating Temperature |
°C |
-25 |
+55 |
|
|
22 |
Operating Humidity |
% |
100 |
||
|
23 |
Operating Pressure |
hPa |
600 |
1100 |
|
|
24 |
Materials |
|
|||
|
25 |
Dimensions |
mm |
96 x 158 x 197 Each head (without dust tube) |
||
|
26 |
Weight |
kg |
2.5 |
Each head |
|
|
27 |
Regulatory Compliance |
2014/30/EU (Electromagnetic Radiation) |
|||
|
28 |
Design Life |
Years |
20 |
||
|
29 |
MTBF |
Years |
>20 |
||
|
30 |
Warranty |
Months |
24 |
Return to base warranty. Extensions available |
Contact Information
LOCATIONS
Office 3, Dynamic Business Center, Abdulkambar, Hor Al Anz, DUBAI, UAE
Get Directions To Our Office
P.O.Box: 55879
info@fmit-instruments.com
Tel: (+971) 4 5284003
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