Air Velocity Transmitter for measurement down to ?0? m/s
EE 66 SERIES
EE66 air velocity transmitter series are designed for high accuracy measurement of lowest air velocities. It is the ideal solution for laminar flow control and special ventilation applications. The E+E thin film sensor is operating on an innovative hot film anemometer principle. This guarantees excellent accuracy for air velocity down to almost 0 m/s, which is not possible for conventional anemometers with commercial temperature sensors or NTC bead thermistors EE66 series are available with current or voltage output, the measuring range and the response time can be selected with jumpers by the user.
| Technical data |
| Measuring range: |
0...1 m/s; 0...1.5m/s; 0...2m/s (adjustable by jumpers) |
| Response time: |
typ. 4s or typ. 0.2s (adjustable by jumpers) |
| Outputs: |
0...10 V or 4...20 mA (adjustable by jumpers) |
| Supply: |
24V AC/DC |
|
High-Precision Air / Gas Velocity Transmitter for Industrial Applications
EE 75 SERIES
The EE75 series air velocity transmitters were developed to obtain accurate measuring results over a wide range of velocities and temperatures.
A high-quality hot film sensor element based on cutting- edge thin film technology ensures maximum sensitivity, even at lowest mass flows.
At the same time, the innovative probe design produces reliable measuring results at high flow velocities of up to 40m/s (8000ft/min). The integrated temperature compen- sation minimises the temperature cross-sensitivity of the EE75 series which, combined with the robust mechanical design, allows it to be used at process temperatures between -40 to +120°C (-40 to 248°F).
| Technical data |
| Measuring range: |
0...2m/s (0...400ft/min)
0...10m/s (0...2000ft/min)
0...40m/s (0...8000ft/min)
-40...120°C (-40...248°F) |
| Response time: |
< 1.5s...40s (can be configured) |
| Outputs: |
freely scaleable in the ranges of 0...10V and 0...20mA (e.g. 4...20mA) |
| Accuracy: |
+/-0.05m/s (+/10ft/min)
+/-0.1m/s (+/20ft/min)
+/-0.2m/s (+/40ft/min)
+/-0.5°C (+/0.9°F) |
| Supply: |
24V AC/DC |
| Operating range: |
0...40m/s (0...8000ft/min)
-40...120°C (-40...248°F)
pressure-tight models up to max. 10bar |
|
In addition to air velocity and temperature values, the transmitter calculates the volumetric flow rate in m³/h or ft³/min. The cross section of the duct needs to be determined for this purpose and the volumetric flow rate can be displayed and directed to one of the analogue outputs.
The EE75 series can be used to measure the velocity of other gases as well, although a correction has to be applied to the unit at the factory. |
