Land 4500 MKII Premier, Operation And Maintenance Manual

Page: 116 / 139

Model 4500 Premier Dust and Opacity Monitor
116
Dust Offset
On selection press the
‘
ENTER' (
↵ ↵↵ ↵↵
) key (notice the underlined character).
The Dust Offset value sets a base line offsets in dust calibration) It is
recommended that this value is set to zero . Press the
↑
or
↓
key to
select the required value then press the
‘
ENTER' (
↵ ↵↵ ↵↵
) key to set the
option (notice no underlined character). It is now possible to scroll through
the ‘Miscellaneous sub-menu’ by pressing the
↑ ↓
keys.
Output Zero Limit (OP0 Limit)
On selection press the
‘
ENTER' (
↵ ↵↵ ↵↵
) key (notice the underlined character).
The Output Zero Limit value sets the minimum opacity value to be
displayed (default setting of 0.04 or 4%). This complies with EPA
legislation (USA). See Error Message No 4 in Fault Finding section of the
Reference manual. Press the
↑
or
↓
key to select the required value
then press the
‘
ENTER' (
↵ ↵↵ ↵↵
) key to set the option (notice no underlined
character). It is now possible to scroll through the ‘Miscellaneous sub-
menu’ by pressing the
↑ ↓
keys.
Station Number (Station No.)
On selection press the
‘
ENTER' (
↵ ↵↵ ↵↵
) key (notice the underlined character).
The Station Number indicates the location of the instrument to the user
control system via the MODBUS communication protocol. Press the
↑
or
↓
key to select the required value then press the
‘
ENTER' (
↵ ↵↵ ↵↵
) key to set
the option (notice no underlined character). It is now possible to scroll
through the ‘Miscellaneous sub-menu’ by pressing the
↑ ↓
keys.
Link (Not fitted)
On selection press the
‘
ENTER' (
↵ ↵↵
↵↵
) key (notice the underlined character).
The User interface requires indication no link has been fitted. Press the
↑
or
↓
key to select the required value then press the
‘
ENTER' (
↵ ↵↵
↵↵
) key to set
the option (notice no underlined character). It is now possible to scroll
through the ‘Miscellaneous sub-menu’ by pressing the
↑ ↓
keys. Do not
change this value without authorisation from Land Instruments
International.
Show negative values (show -ve)
On selection press the
‘
ENTER' (
↵ ↵↵
↵↵
) key (notice the underlined character).
Negative opacity values may be shown for diagnostic purposes and are
required by certain regulatory agencies. Press the
↑
or
↓
key to select
the required value then press the
‘
ENTER' (
↵ ↵↵
↵↵
) key to set the option
(notice no underlined character). It is now possible to scroll through the
‘Miscellaneous sub-menu’ by pressing the
↑ ↓
keys.
Dust Offset: x
OP0 Limit: x
Station No.: x
Link: Not fitted
Show -ve: No