Land 4500 MKII Premier, Operation And Maintenance Manual

Page: 103 / 139

Model 4500 Premier Dust and Opacity Monitor
103
Interval
On selection of ‘Interval xxh’ press the
‘
ENTER' (
↵ ↵↵ ↵↵
) key (notice the
underlined ‘x’). Use the
↑
and
↓
keys to select the time interval (in hours)
between automatic calibrations. The default setting is 24 hours.
Once a time interval has been selected it is set by pressing the ‘EXIT’
key which returns the display to the ‘Cal Setup’ screen.
NOTE
If 0 (zero) is entered for the cal interval, the internal automatic
calibration facility is disabled. Calibration check sequences
can be initiated by placing a contact closure across terminal 36
and 37 inside the Termination Box or via Modbus.
Time to Next Calibration
On selection of ‘Time to next cal’ press the
‘
ENTER' (
↵ ↵↵
↵↵
) key (notice the
underlined ‘x’ next to the ‘h’ on the bottom line). The time interval before
the first calibration can now be set.
First select the hours using the
↑
and
↓
keys and then press
‘
ENTER'
(
↵ ↵↵ ↵↵
) (notice the underlined ‘x’ has moved under character next to ‘mins’).
Use the
↑
and
↓
keys again to select the minutes required. Once a time
interval has been selected it is set by pressing the
‘
ENTER' (
↵ ↵↵
↵↵
) key.
Press the ‘EXIT’ key to return the display to the ‘Cal Setup’ screen.
↵ ↵↵
↵↵
↑↓
↵ ↵↵
↵↵
↵ ↵↵
↵↵
↑↓
↵ ↵↵
↵↵
↑↓
Time to next cal.
xxh
xxmins
Cal. Setup
Interval:
24h
Cal. Setup
Interval:
24h
Cal. Setup
Interval:
5h
Time to next cal.
xx h
xx mins
Time to next cal.
2 h
xx mins
Time to next cal.
2 h
10 mins