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--- en:datasheets:tfl-usx [2024-02-28 21:52] – [Features] jesadmin
+++ en:datasheets:tfl-usx [2026-05-21 23:06] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 ~~NOTOC~~
+[[this>doku.php?id=en:datasheets:tfl-usx&do=export_pdf&tpl=datasheet_en&book_title=JES t/FL-USX Data Sheet|PDF]]
 {{ :media:tfl-usx:d-fl220t.png?nolink&600 | t/FL-USX Air Flow Monitoring System}}
 <pagebreak>
-====== JES t/FL-USX Air Flow Monitoring System ======
+====== JES t/FL-USX Ultrasonic Cross Section Air Flow Monitoring System ======
 <columns 100% 33% 33% ->
@@ Line 12: / Line 14: @@
   *Sensor setup via service interface
   *Suitable for tunnel cross sections up to 18 m \\ (Measuring path up to 25 m)
-  *Connection to tunnel control system either via analogue output and relays or via RS 485 MODBUS RTU
+  *Connection to tunnel control system either via analogue output and relays or via RS-485 MODBUS RTU
   *Visible LEDs to indicate sensor status
   *Optional, remote smart/HUB touch operation unit to display measured values and to modify parameters
+  *Certified according IEC/CSA/UL 61010-1 (cCSAus marking)
 ===== System setup =====
   *Two sensors (master & slave) with mounting clamps mount-ed below the tunnel ceiling in an angle of 30° to 60° to the tunnel axis
   *Terminal box for master to connect the power supply and the connections to the tunnel control system and the slave
-  *Terminal box for Slave
+  *Terminal box for slave
   *Optional remote smart/HUB touch operating unit
@@ Line 26: / Line 29: @@
 ===== Operation =====
-The air flow monitoring system measures the air flow based on different transmission times of ultrasonic pulses sent in one or the other direction. This cross section measurement delivers the average air speed more reliable and mean-ingful than methods that measure only one or two points on the tunnel wall.
+The air flow monitoring system measures the air velocity and direction based on different transmission times of ultrasonic pulses sent in one or the other direction. This cross section measurement delivers the average air velocity more reliable than methods that measure only one or two points on the tunnel wall.
 Two sensors are mounted below the tunnel ceiling, cross section with an angle of 30° to 60° (usually 45°) such that a vector component of the air flow overlaps the direction of the ultrasonic sound pulses exchanged by the two sensors.
-Air flow in the tunnel influences the transition time of the pulses be-tween sender and receiver. Based on the difference in transition times of ultrasonic pulses sent in one or the other direction the measured values are calculated.
+Air flow in the tunnel influences the transition time of the pulses between sender and receiver. Based on the difference in transition times of ultrasonic pulses sent in one or the other direction the measured values are calculated.
-Measured values are air speed, air flow rate, direction of air flow and air temperature.
+Measured values are air velocity, air flow rate, direction of air flow and acoustic virtual air temperature.
 ===== Advantanges =====
@@ Line 40: / Line 43: @@
   *Easy configuration
   *Corrosion resistant against aggressive tunnel atmosphere
-  *Sensors can be replaced quickly with no tools and no re-alignment required
+  *Sensors can be replaced quickly with no special tools, easy re-alignment
   *Minimised spare requirements
   *Extremely low maintenance requirements
@@ Line 48: / Line 51: @@
 ===== Application =====
-~~SNIPPET_O1709157144~~en:snippets:datasheet:application~~
+~~SNIPPET_O1788987440~~en:snippets:datasheet:application~~
 Tunnels are important infrastructure elements in road networks and facilitate the connection of regions.
@@ Line 64: / Line 67: @@
   * Visibility (extractive or in-situ)
-  * Toxic gases like CO, NO, NO2 (extractive or in-situ)
+  * Toxic gases like CO, NO, NO<sub>2</sub> (extractive or in-situ)
   * Air velocity, direction and temperature
   * Luminance (access, threshold and interior zone)
@@ Line 79: / Line 82: @@
-~~SNIPPET_O1709070954~~en:snippets:techdata:tfl-usx:tfl-usx_airflow-measurement~~
+~~SNIPPET_O1788987440~~en:snippets:techdata:tfl-usx:tfl-usx_airflow-measurement~~
 {|class="techdata"
 !colspan="2"|Air flow measurement
@@ Line 89: / Line 90: @@
 |-
 |Measuring method
-|Determination of direction dependant differential transi-tion times of ultrasonic pulses
+|Determination of direction dependant differential transition times of ultrasonic pulses
 |-
 |Measured values
-|Air speed \\ Air flow rate \\ Direction of air flow \\ Air temperature
+|Air velocity\\ Air flow rate \\ Direction of air flow \\ Acoustic virtual air temperature
 |-
 |Measuring range
-| -40 .. 40 m/s
+| -20 .. 20 m/s
 |-
 |Resolution
-|0.1 m/s, accuracy depending on measuring distance, flow profile, installation, typically <±0.2 m/s at 3 m/s
+|0.1 m/s
+|-
+|Accuracy
+|2% end of measuring range
 |-
 |Response time
@@ Line 109: / Line 113: @@
 |30 - 60° to tunnel longitudinal axis, typically 45°
 |}
 ~~SNIPPET_C~~en:snippets:techdata:tfl-usx:tfl-usx_airflow-measurement~~
-~~SNIPPET_O1709070972~~en:snippets:techdata:tfl-usx:tfl-usx_outputs~~
+~~SNIPPET_O1788987440~~en:snippets:techdata:tfl-usx:tfl-usx_outputs~~
 {|class="techdata"
 !colspan="2"|Outputs
@@ Line 132: / Line 134: @@
 |1x RS 485 MODBUS RTU to control system, bidirectional \\ 1x Intercom RS 485 master-slave
 |}
 ~~SNIPPET_C~~en:snippets:techdata:tfl-usx:tfl-usx_outputs~~
@@ Line 383: / Line 384: @@
 ==== Conformities ====
-~~SNIPPET_O1709155386~~en:snippets:techdata:tfl-usx:tfl-usx_conformities~~
+~~SNIPPET_O1788987440~~en:snippets:techdata:tfl-usx:tfl-usx_conformities~~
 {|class="techdata"
 !colspan="2"|Conformities
@@ Line 394: / Line 395: @@
 /30/EU Electromagnetic compatibility (EMC) \\
 EN 61010-1 Safety requirements for electrical equipment for measurement, control and laboratory use \\
-EN 61326-1 Electrical equipment for measurement, control and laboratory use - EMC requirements
+EN IEC 61326-1:2021 Electrical equipment for measurement, control and laboratory use - EMC requirements
 |-
 |Tunnel safety standards
-|AT: RVS 09.02.22 \\
+|Austria: RVS 09.02.22 \\
-DE: RABT 2006 \\
+Germany: RABT 2006 \\
-CH: ASTRA RL 13001, Fachhandbuch BSA \\
+Switzerland: ASTRA RL 13001, Fachhandbuch BSA \\
-NO: Norwegian Public Roads Administration Handbook No. 021 Road Tunnels
+Norway: Norwegian Public Roads Administration Handbook No. 021 Road Tunnels \\
+International: ISO 23431 Measurement of road tunnel air quality
 |}
 ~~SNIPPET_C~~en:snippets:techdata:tfl-usx:tfl-usx_conformities~~