77
11 Supplement
MINITRAC 31 • Foundation Fieldbus
41782-EN-211203
Ʋ Max.
Standard: 750 VA AC, 40 W DC (at U < 40 V DC)
USA, Canada: 750 VA AC
If inductive loads or stronger currents are switched
through, the gold plating on the relay contact surface will
be permanently damaged. The contact is then no longer
suitable for switching low-level signal circuits.
Contact material (relay contacts)
AgNi or AgSnO2 each with 3 µm gold plating
Transistor output
Output
Floating transistor output, permanently shortcircuit-proof
Load current
< 400 mA
Voltage loss
< 1 V
Switching voltage
< 55 V DC
Blocking current
< 10 µA
Measurement accuracy (according to DIN EN 60770-1)
Process reference conditions according to DIN EN 61298-1
Ʋ Temperature
+18 … +30 °C (+64 … +86 °F)
Ʋ Relative humidity
45 … 75 %
Ʋ Air pressure
860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)
Non-repeatability
≤ 0.1 %
Deviation with bulk solids
The values depend to a great extent on the application.
Binding specifications are thus not possible.
Deviation under EMC influence
≤ 1 %
Characteristics and performance data
Step response time
5)
≤ 5 s (with damping 1 s)
Ambient conditions
Storage and transport temperature
-40 … +60 °C (-40 … +140 °F)
Process conditions
For the process conditions, please also note the specifications on the type label. The lower value
always applies.
Process pressure
Unpressurized
Process temperature (measured on the
detector tube)
-40 … +60 °C (-40 … +140 °F)
With temperatures of more than 60 °C we recommend
the use of water cooling
Vibration resistance
6)
mechanical vibrations up to 5 g in the frequency range
5 … 200 Hz
5)
Time span after a sudden measuring distance change by max. 0.5 m in liquid applications, max 2 m with bulk
solids applications, until the output signal has taken for the first time 90 % of the final value (IEC 61298-2).
6)
Tested according to the guidelines of German Lloyd, GL directive 2.
