MINIMUM FLOW:
Enter a minimum flow rate of 10.0 lbs.
per minute (5.0 kg per
minute) of NH3. This
will prevent the system
from applying below
the recommended minimum rate for the
Micro-Trak NH3 flowmeter.
In NH3 mode, the console calculates rates and totals in lbs.
(kg) of nitrogen (N) or anhydrous ammonia (NH3) as shown
below.
Calibration Factors for NH3
To enter standard calibration mode, put the switch in the
MASTER HOLD position and press the CAL button for 1
second. Some of the calibration factors are the same as a
liquid system, but there are some important differences:
lbs. (kg) NH3 (scale tickets are in
NH3 for easy comparison)
lbs. (kg) NH3/Minute
lbs. (kg) NH3
remaining in tank
lbs. (kg) N per acre /(hectare)
provides application rate of
actual nitrogen
WIDTH
CAL
FLOW
CAL
MIN
FLOW
ADJUST
RATE
TARGET
RATE
SPEED
CAL
INLINE
BYPASS
TEST
SPEED
VOLUME /
MINUTE
DISTANCE
AREA /
HOUR
VOLUME
(1) (2) (3)
RATE
SPEED
AREA
(1) (2) (3)
CAL
CONT
SEL
RESET
TANK
___
HOLD
FLOW CAL:
This po si tion is used to cal i brate the flow me-
ter for ac cu rate liquid
mea
sure
ment. The
flowmeter has been
calibrated at the factory
to read in pounds of actual “N”.
ADJUST RATE:
Enter the desired amount of change in pounds
(kg) of actual “N” applied per acre (hectare)
for on-the-go adjustments to the Target
Rate when operating in AUTOmatic mode.
Enter 0 to disable this
feature.
ADJUST
RATE
TANK
MIN
FLOW
VOLUME /
MINUTE
FLOW
CAL
VOLUME
(1) (2) (3)
TARGET RATE:
Use the “+” and “-” buttons to
enter the desired application rate in pounds
(kg) of actual “N” applied per acre (hectare).
TARGET
RATE
RATE
Your Micro-Trak NH3 flowmeter has been tested at the factory
and assigned a “FLOW CAL” value (pulses/lb N) to make it
operate properly with the MT-3405D console. This number
is stamped on the metal tag attached to the flowmeter.
See Illustration below.
This is a starting point only. The value
must be fine tuned.
See Fine-Tuning Flowmeter Calibration
for NH3 on page 68.
When entering the flow cal value, take
note of decimal point placement.
64
Appendix F
(cont)
MT-3405D - NH3 Specific
(cont)
MT-3405D Console Functions in NH3 Mode
(cont)
Summary of Contents for DUAL CONTROL MT-3405D
Page 1: ...REFERENCE MANUAL DUAL CONTROL AUTOMATIC RATE CONTROLLER MT 3405D ...
Page 47: ...Appendices 47 ...
Page 82: ...82 NOTES ...
Page 83: ......