Operating Conditions: Environment - Endress+Hauser Flowphant T DTT31 Technical Information

DTT31, DTT35
Inlet and outlet run
Ambient temperature range
Storage temperature
Climate class
Degree of protection
Shock resistance
Vibration resistance
Electromagnetic
compatibility
Endress+Hauser
NOTICE
The thermal measuring principle is sensitive to disturbed flow conditions.
‣ As a general rule, install the measuring device as far away as possible from any flow disturbances.
For further information → ISO 14511.
‣ If possible, install the sensor upstream from fittings such as valves, T-pieces, elbows, etc.
‣ To attain the specified level of accuracy of the measuring device, the inlet and outlet runs
mentioned below must be maintained at the very minimum.
‣ If there are several flow disturbances present, the longest specified inlet run must be maintained.
1
5 × DN
4
15 × DN
1 Reduction
2 Expansion
3 90° elbow or T-section
4 Pump
5 Control valve
6 2x 90° elbow 2- or 3-dimensional

Operating conditions: Environment

–40 to +85 °C (-40 to +185 °F)
–40 to +85 °C (-40 to +185 °F)
4K4H as per DIN EN 60721-3-4
IP65 (optional IP66, depending on used connector)
50 g as per DIN IEC 68-2-27 (11 ms)
• 20 g as per DIN IEC 68-2-6 (10-2000Hz)
• 4 g as per German Lloyd GL Guidelines
• Interference emission as per IEC 61326 Series, class B electrical equipment
• Interference immunity as per IEC 61326 Series, appendix A (industrial use) and NAMUR
Recommendation NE 21
EMC influence: ≤ 0.5 %
2
3 × DN 5 × DN
5
3 × DN 10 × DN
3
3 × DN 5 × DN
6
3 × DN 5 × DN
3 × DN
3 × DN
A0023225
9