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3.2
Test Mode
A very powerful test mode, especially useful during
commissioning and plant fault finding, enables all external
devices connected to the MagMaster to be tested over the full
range of flow rates (see WARNING below).
This mode can be used regardless of flow conditions in the
sensor, or even with the sensor disconnected, and does not
require the use of additional equipment.
To access the Test Mode, connect a terminal device to the
Programming Connector as described in APPENDIX A .
Select ‘Engineer’ security level (see Configuration Section).
Set ‘Test Mode’ parameter to ‘1’ and enter an appropriate flow
rate in the ‘Test Flow’ parameter.
Output responses may now be viewed from the various ‘Test’
parameters. (See Configuration Section for full details of
operation.)
Warning. Refer to Safety Measures if a data
terminal is to be used to diagnose faults in hazardous
locations.
Warning.
• Observe all safety measures (See INTRODUCTION).
• Take all precautions to avoid risk to personnel, plant and
risk of explosion in hazardous areas.
• Do NOT open the transmitter main casing. There are no
user serviceable parts or adjustments inside.
• Service access is restricted to the termination area
Should the MagMaster fail to operate, first check the power
supply, then the power supply connections and fuse located in
the termination area. If necessary, replace the fuse with the
one of the correct rating as listed in the Table below.
Check that all external connections are made correctly.
3.1
Alarms
The transmitter has built in diagnostics with alarm indication
which interrupts the transmitter local display. A data terminal
connected to the transmitter will display these alarms in ‘Read
Alm’ parameter; ‘16’ from Main Menu (see Warning in next
column).
The table below shows possible alarm indications and Fig. 2.1
Fault Finding Flow Chart indicates checking procedures to find
the problems causing the alarms.
For method of interrogating the local display see the
OPERATION section in the MagMaster Installation Manual.
