TeeJet Legacy 6000 CAN Guide - Manual (Page 91)

Fieldware for the Legacy 6000
Software Version 2.11
Chapter 3 - Real-time Setup 3-21
Performing a Calibration
NH3 In-Field Calibration
There are two calibration procedures for NH3, Static and In-Field. ! CAUTION ! The Static cali-
bration procedure is not recommended by Mid-Tech, do to the hazardous material being
calibrated (Anhydrous ammonia, and Liquid nitrogen).The recommended procedure is the
NH3 In-Field Calibration process. This procedure is used to calibrate a NH3 flowmeter after a real-
time product application. In-Field calibration involves discharging a know amount of product in a
real-time application and then performing a calibration based on the material discharged. Repeat-
ing the procedure below will ensure an accurate calibration.
1. Load tank with a know amount of product or connect
to an accurately weighed tank of anhydrous. Record
this amount for later use.
2. With the product loaded, apply the product. Make
sure before starting all accumulated volumes are zero.
This can be done by creating a new job when using a
data card or if no data card is in use select field reset
to set volumes to zero. The volume accumulated will
be used in the In-Field Calibration procedure. For best
results apply product at the rate and speed of normal
operation.
3.Once the product has been applied, from the ARM
Launcher page select the Calibration button by using
the function key or by highlighting Calibration and
pressing the green enter button.
4. From the Calibration page select the PCM - NH3
option from the pick list in the middle of the screen.
Press the green forward arrow to continue to the next
calibration step.