Output - Endress+Hauser Flowphant T DTT31 Operating Instructions Manual

DTT31, DTT35

9. 2 Output

Switching capacity
• Switch status ON: I
• Switch status OFF: I
• Switching cycles: > 10,000,000
• Voltage drop PNP: ≤ 2 V
• Overload protection
Automatic load testing of switching current; output is switched off in event of over current,
the switching current is tested again every 0.5 s; max. capacitance load: 14 μF for max. supply
voltage (without resistive load); periodical protective disconnection in event of over current
(f = 2 Hz) and 'Warning' display.
Analog output: Signal on alarm as per NAMUR NE43
• Under ranging:
Linear drop to 3.8 mA
• Over ranging:
Linear rise to 20.5 mA
• Sensor breakage; sensor short-circuit:
≤ 3.6 mA or ≥ 21.0 mA (output 21.7 mA is guaranteed for setting ≥ 21.0 mA)
• Switch outputs: with safe status (switch open)
9. 3 Operating conditions
• Orientation, → Chap. 3.4.1
• Top housing section can be rotated 310°
9.3.1 Operating conditions: Environment
• Ambient temperature range
–40 to +85 °C (-40 to 185 °F)
• Storage temperature
–40 to +85 °C (-40 to 185 °F)
• Climate class
4K4H as per DIN EN 60721-3-4
• Degree of protection
With M 16x1.5 or ½" NPT valve connector: IP 65
With M 12x1 connector: IP 66
• 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 guidelines of German Lloyd GL
• Electromagnetic compatibility
Interference emission as per IEC 61326, class B equipment
Interference immunity as per IEC 61326, Appendix A (industry) and
NAMUR Recommendation NE21
EMC influence: ≤ 0.5%
Endress+Hauser
≤ 250 mA
a
≤ 1 mA
a
Technical data
31