Endress+Hauser Flowphant T DTT31 - Environmental Conditions and Safety

Flowphant T DTT31, DTT35 Technical data
Endress+Hauser 39
Behavior in the event of overvoltage (>30 V)
• The device works continuously up to 34 V
DC
without any damage
• No damage in event of transient overvoltage up to 1 kV (according to EN 61000-4-5)
• If the supply voltage is exceeded, the specified characteristics are no longer guaranteed
Behavior in the event of undervoltage
If the supply voltage falls below the minimum value, the device switches off in a defined
manner (status as if not supplied with power = switch open)
The device may be powered only by a power supply unit that operates using a limited
energy circuit in accordance with UL/EN/IEC 61010-1, Section 9.4 and the requirements
in Table 18.
11.3.2 Current consumption
< 100 mA (no-load) at 24 V
DC
, max. 150 mA (no-load); with reverse polarity protection
11.4 Environment
11.4.1 Ambient temperature range
–40 to +85 °C (–40 to +185 °F)
11.4.2 Storage temperature
–40 to +85 °C (–40 to +185 °F)
11.4.3 Operating altitude
Up to 4 000 m (13 123.36 ft) above sea level
11.4.4 Degree of protection
IP65 M16 x 1.5 or NPT ½", valve connector
IP66 M12 x 1 connector
11.4.5 Shock resistance
50 g as per DIN IEC 68-2-27 (11 ms)
11.4.6 Vibration resistance
• 20 g as per DIN IEC 68-2-6 (10-2000 Hz)
• 4 g as per marine approval
11.4.7 Electromagnetic compatibility (EMC)
EMC to all relevant requirements of the IEC/EN 61326-series and NAMUR Recommendation
EMC (NE21). For details, refer to the Declaration of Conformity.
Maximum fluctuations during EMC-tests: < 1 % of measuring span.
Interference immunity to IEC/EN 61326-series, requirements for industrial areas
Interference emission to IEC/EN 61326-series, electrical equipment Class B