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MERCAP – INSTRUCTION MANUAL
7ML19981CM01.1
Adjustment using HART
TM
The MST9500 transmitter can be adjusted using HART
TM
, with a HART communicator, a laptop
running Cornerstone or with the Host system (D.C.S.). The local circumstances determine the
manner in which adjustment takes place. If the circumstances allow the product to be
brought up to the 0% and 100% point level, adjustment is simple.
Example of adjustment by means of a Rosemount 275 hand-held communicator, fitted with the
GENERIC device descriptor:
Example 1
In this situation, the level of the product can be easily adjusted to 0 and 100%.
1.
Switch on the 275 and request connection with the MST9500.
a.
Select:
Online
b.
Select:
Device set-up
c.
Select:
Diag service
d.
Select:
Calibration
e.
Select:
Apply values
f.
Select:
4 mA
2.
Bring the level of the product to the level which corresponds with 4mA.
a.
Select:
Read new value
b.
Select:
Set as 4 mA level
3.
The 4 mA point has now been set.
a.
Select:
Exit (you return to Apply values)
b.
Select:
20 mA
4.
Bring the level of the product to the level which corresponds with 20 mA.
a.
Select:
Read new value
b.
Select:
Set as 20 mA level
5.
The 20 mA point has now been set.
