Delta-T Devices AP4 User Manual page 52

Layout and Control
The scroll key >> can be used to step through all the available
options on the screen
PRESS
OFF
Beginners can ignore this.
Use this when replacing the AP4 head.
It gives access to the "Configure AP4 Head Screen"
Use it to install the appropriate calibration for a new light
sensor and to zero the electronics circuit which measures the
cup-leaf temperature difference,
See also :
Light sensor calibration:
Thermistor calibration:
Accessing the SET SCREEN will display three head calibration coefficients, used to
characterise water absorption in the cup. These are automatically used to calculate the
results. Only theoreticians and other experts will be interested in this.
Page 52
SCROLL KEY
.
MAIN MENU:
CALIBRATE
READ
MAIN MENU:
CALIBRATE
READ
Next option
identified
SHIFT OFF (together)
Page 23 in the AP4 Technical Manual
Page 26 in the AP4 Technical Manual
30/5/19 14:20
REVIEW
OUTPUT
30/5/19 14:20
REVIEW
OUTPUT
Bat: 97 %
Mem: 87 %
Bat: 97 %
Mem: 87 %
OFF
SHIFT