16
Illustration 11
Calibration
English or Metric?
Illustration 12
The MT-NH3
TM
II is capable of displaying information in
American English or standard Metric measurement. The
MT-NH3
TM
II is shipped from the factory programmed for
English.
Note that the following procedures will also load
factory default calibration values.
To simply change units
without loading defaults, see the
"Special Calibration"
section.
ENGLISH:
To activate the English mode, turn power OFF and place the
rotary switch at "TOTAL NH3". Hold down both the "CAL"and
"-" keys and turn power ON. The console will display "Load".
Release the two keys.
See Illustration 11.
To "lock-in" English
mode you must enter and exit calibration. Press and hold
the CAL key until "CAL" icon turns on. The console is now in
calibration. Exit CAL by pressing and holding the CAL key
until the "CAL" icon disappears from the display. English
units are now locked in.
METRIC
To activate the Metric mode, turn power OFF and place the
rotary switch at "AREA". Hold down both the "CAL" and "-"
keys and turn power ON. The console will display "LOAd".
Release the two keys.
See Illustration 11.
To "lock-in" Metric
mode you must enter and exit calibration. Press and hold
the CAL key until "CAL" icon lights on the display. The console
is now in calibration. Exit CAL by pressing and holding the CAL
key until "CAL" icon disappears from the display (approxi-
mately 3 seconds). Metric units are now locked in.
NOTE: In metric, the width will have a decimal point, in
English there is no decimal point. Also, changing from
English to Metric mode may change or alter any
previously entered calibration values. After switch-
ing measurement modes, confirm that all calibration
values are correct.
IN ALL CALIBRATION OPERATIONS
To enter or change any of the system’s calibration values,
you must enter calibration mode. To enter calibration mode,
STOP the vehicle, place the Run/Hold Switch into Hold and
press and hold the CAL button until “CAL” lights up
(approxi-
mately one second). See Illustration 12.
(NOTE: Calibration may be entered while moving, but it is
not recommended to attempt calibration while the vehicle
is moving.)
The console will remain in calibration mode,
with the RED warning light illuminated until you exit calibra-
tion or turn power OFF.
Once in calibration mode, you may change any one, all or
none of the values, in any order. To select a calibration
position, simply turn the rotary selector to the desired posi-
tion. Calibration positions are identified in white type on
each side of the rotary selector. All values are entered and
adjusted using the “+” and “-” buttons on the front panel.
To save new values, you must exit CAL mode
(by pressing
the CAL button until the CAL icon turns off )
prior to turning
power off.
MT-NH3 II
™
AUTO
MAN
CAL
RESET
RATE
ACTUAL “N”
TOTAL NH3
(1) (2) (3)
AREA
(1) (2) (3)
NH3 PER
MINUTE
TANK (NH3)
DISTANCE
AREA/
HOUR
SPEED
FLOW
CAL
MIN
FLOW
ADJUST
RATE
TARGET
RATE
WIDTH
CAL
SPEED
CAL
Run/Hold Switch in
HOLD position
MT-NH3 II
™
AUTO
MAN
CAL
RESET
RATE
ACTUAL “N”
TOTAL NH3
(1) (2) (3)
AREA
(1) (2) (3)
NH3 PER
MINUTE
TANK (NH3)
DISTANCE
AREA/
HOUR
SPEED
FLOW
CAL
MIN
FLOW
ADJUST
RATE
TARGET
RATE
WIDTH
CAL
SPEED
CAL
CAL
Run/Hold Switch in
HOLD position
Press to enter or exit
Calibration Mode.
Red warning light will
be lit when in CAL.
PRESS both and turn
power on to load Units
Press to increase or
decrease values.
