DTT31, DTT35
Endress+Hauser 9
Operating conditions: Environment
Ambient temperature range –40 up to +85 °C (-40 to +185 °F)
Storage temperature –40 up to +85 °C (-40 to +185 °F)
Climate class 4K4H as per DIN EN 60721-3-4
Degree of protection IP 65 (complete housing)
Shock resistance 50 g as per DIN IEC 68-2-27 (11 ms)
Vibration resistance • 20 g as per DIN IEC 68-2-6 (10-2000Hz)
• 4 g as per German Lloyd GL Guidelines
Electromagnetic compatibility • 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 %
Operating conditions: Process
Process temperature limits -20 to +85 °C (-4 to +185 °F)
!
Note!
The sensor can be exposed up to 130 °C (266 °F) without damage; monitoring switches off automatically at
T ≥ 85 °C (185 °F) and starts again at T ≤ 85 °C (185 °F).
Process pressure limits Maximum permitted process pressure p
max
≤ 10 MPa = 100 bar (1450 psi)
"
Caution!
The maximum process pressure for the conical metal-metal process connection (MB option) for the DTT35 is
1.6 MPa = 16 bar (232 psi)!
Process flow limit Liquids: 0 up to 3.0 m/s (0 up to 9.84 ft/s)
Operating range Liquids: 0.03 up to 3.0 m/s (0.1 up to 9.84 ft/s)