Using A Hart® For Tuning Of Signal Strength - Simtronics GD1 MK3 Operating Manual

3.3.2. Using a HART® for tuning of signal strength
For tuning of signal strength and setting of transmission reference level, use the Alignment
Interface Unit and a HART® terminal.
# Step description
Clean the lenses of both transmitter (TX) and
receiver (RX) for any dirt before proceeding.
1 The optical path should be clear at the time
of aligning (avoid fog, mist, steam, rain,
snow, etc.).
Connect the HART® terminal between
terminal 7 and 2, in parallel with a resistor as
shown in the figure to the right.
2
See section 0 for a more detailed description
on HART®.
On the HART® terminal start the "Alignment
procedure". This can be found in the
3
following path:
ConfigurationSetupAlignment
On the HART® terminal enter the command:
4
#SM
The system is now entering Service Mode. Using HART®, it is necessary to go through
Service Mode to enter or exit Alignment Mode.
GD1
Terminal response:
SM
Analogue loop 1 (terminal 7) and
loop 2 (terminal 8) will output
2 mA.
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Illustration / response
850-816926-EN R06