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Measured variable
Measuring range
Input
Output
Signal on alarm
Transmission behavior
Supply voltage
Cable entry
Reference operating
conditions
Maximum measured error
Influence of ambient
temperature
Installation instructions
12
Technical data
12.0.1
Input
Current
4 to 20 mA (reverse polarity protection)
• Line voltage drop < 4 V at 3 - 22 mA
• Max. line voltage drop < 6 V at max. short-circuit current 200 mA
12.0.2
Output
Digital limit switch
Passive, open collector:
I
= 200 mA
max
U
= 35 V
max
U
= < 2 V at 200 mA
low/max
Max. reaction time to limit value = 250 ms
No measured value visible on the LC display, no background illumination.
The indicator allows the HART
12.0.3
Power supply
Supply by means of the 4 to 20 mA current loop.
The following cable entries are available:
• 3x thread NPT1 + 1x blind plug
• 3x thread M20 + 1x blind plug
• 2x gland M20 + 1 x blind plug
• 3x thread G1/2 + 1 x blind plug
12.0.4
Performance characteristics
T= 25 °C (77 °F)
< 0.1% of scaled display range
Effect on the accuracy when ambient temperature changes by 1 K (1.8 °F): 0.01%
12.0.5
Installation
Mounting location
Wall or pipe mounting (see 'Accessories')
Orientation
No restrictions
®
transmission protocol to pass unimpeded.
Technical data
61
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