VEGA AM12 User Manual
Operating Instruction
Retrofitting of the display
Indicating module 12 (AM12)
Level and Pressure
8888
Contents
Safety information ........................................................................ 2
Note Ex-area ............................................................................... 2
1 Product description
1.1 Function and configuration ................................................. 3
1.2 Technical data ...................................................................... 3
2 Electrical connection ................................................................ 4
3 Set-up
3.1 Indicating and adjustment elements .................................. 5
3.2 Retrofitting of the display .................................................... 6
3.3 Adjustment ........................................................................... 7
Contents
Safety information
The described module must only be inserted
and operated as described in this operating
instruction. Please note that other action can
cause damage for which VEGA does not take
responsibility.
2 Indicating module 12
Note Ex-area
Please note the enclosed approval documents
(yellow binder) and especially the attached
safety data sheet.
Product description
1 Product description
1.1 Function and configuration
The display is a digital indicating instrument
without auxiliary energy for mounting to pressure transmitters D84 / D85 with LC-display
for digital and quasianalogue demonstration.
Function
The display enables the indication of values
between -9999 and 9999. The decimal point
can be shifted. The indicated unit can be
chosen individually.
Configuration
The display can be connected to any active
4 … 20 mA-output.
It is suitable for looping into the 4 … 20 mAsignal line of sensors or for connection to all
signal conditioning instruments VEGAMET
with analogue output 4 … 20 mA or to the
processing system VEGALOG with analogue
output card (AA).
1.2 Technical data
Ambient conditions
Ambient temperature -10°C … +70°C
Storage and transport temperature -40°C … +85°C
Temperature er ror ≤ 0,1%/10K (∆I= 16 mA)
Input
Transmission analogue, 4 … 20 mA
Max. input current 150 mA
Connection line to the sensor 2-wire
Voltage loss 4,5 V at 20 mA
Deviating data for certified instruments
The digital indication type AM12 can be mounted in pressure transmitter type D7. Ex,
D8. Ex with integral oscillator E22 HEx, E23 HEx (2. supplement to EC-type approval TÜV
97 ATEX 1250) as well as in pr essure transmitter type D8.Ex0 with integral oscillator E22
HEx0, E 23 HEx0 (2. supplement to EC-type appr oval TÜV 97 A TEX 1249 X). The Ex-technical data of the pressure transmitters with integral digital indication type AM12 change as
follows:
Ci ≤ 7 nF (instead of ≤ 4 nF as previously)
Indicating module 12 3
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