© PCE Instruments
11
10 Alarm
-
Inter:
This option triggers an audible signal when the measured value is between the
lower and the upper alarm limit.
„+“ and „-“ will flash in the display.
-
Outer:
This option triggers an audible signal when:
A: the measured value is below the lower limit
(„-“ will flash in the display)
B: the measured value is above the upper limit
(„+“ will flash in the display)
-
Off:
This option deactivates the alarm.
11 Calibration by using weights
You can select either
„cal=2“ (2-point calibration) or „cal=3“ (3-point calibration).
Go to the menu F-3 and either select
„cal=2“ or „cal=3“ by means of the arrow keys. Confirm your
selection with OK. Remove all attachments from the device that affect the measuring cell. Confirm
the zero calibration by pressing the OK key. To calibrate the second point, you can use the pre-
set weight or select the desired weight by using the arrow keys. Confirm with the OK key. Attach
the chosen weight to the device and confirm with OK. The indication in the display will start
flashin
g. When the calibration is finished, the display will “CAL”.
The procedure for the 3-point calibration is the same as for the 2-point calibration, just with one
more calibration point.
12 Rechargeable battery
This product is configured with a 1600 mAh 6 V Ni-Hi rechargeable battery. If it is fully charged,
the product can be running uninterruptedly for 10 hours. When shut down, the battery will
discharge in 3 months. Make sure the battery level is always sufficient. In case of power
shortage, use the delivered DC 12 V/1000 mA power adaptor to charge the product. It will be
fully charged within 8 ~ 10 hours. Remove the power adapter immediately after the product
prompts full charge. Otherwise, longtime charging may cause the battery to overheat. Only
charge the battery when it is completely flat. Frequent charging shortens the battery life.
13 Measurement
13.1
Choosing the sample
Following this procedure before making a measurement is very important to ensure valid readings
which are helpful when it comes to determining the best harvest time. Make sure the samples
represent a typical part of the total harvest (minimum number of samples, sizes, quality, etc.). It
is recommended to create your own sampling protocol. The samples should come from various
areas of the harvest. It is important that the selected fruit has equal average sizes as the firmness
also depends on the size (the firmness increases with the size). I is also crucial that the chosen
samples are completely flawless and undamaged. The measuring interval should be about every
3 … 5 days and approx. 10 pieces of fruit should be measured.
