3.2 Filter setting
The display will then show the currently set filter value (0-3) of the selected channel. The filter
value determines the number of readings, which are averaged for each sample as follows:
0 = 1 reading (fastest response)
1 = 2 readings
2 = 4 readings
3 = 16 readings (heaviest damping)
Each reading takes approximately 10 mSec. (Standard, but see section 8 to change).
When correct press CAL.
3.3 Selecting Units
The display will indicate the current units for the selected channel. 4 units are available, kg, t, lb
and a 4th user programmable unit. Press ENT until the required units are displayed.
3.4 Decimal places
The display will then show the selected number of decimal places (0-3), this can be changed by
pressing the required number. When correct press CAL.
3.5
The
calibration method
(automatic or manual) will now be shown.
Two options are available in automatic mode, one by adding a known weight, the other by entering
mV/V figures. The mV/V method is available for PGA gains of 128 or 64, see section 8.
Manual mode allows for fine adjustment of an input, which has already been calibrated. Press ENT
to select the required mode, then CAL.
3.51 Automatic mode
The display will first show ‘
Use known load
‘. If this is the required method, press CAL and go
to 3.52. If ENT is pressed, and input gain is 64 or 128, the display will show ‘
Use mV/V value
‘.
If this is the required method, press CAL and go to 3.53. Pressing ENT will toggle between the two.
3.52 Using known load
The instrument will request the value of a known test weight to be entered.
When entered the 1st line of the display will show:
No Load then ENT
Without the test load present, the ENT key should be pressed. The display will then change to:
Add Load then ENT
At this point add the specified test load and press ENT. The channel will now be calibrated.
3.53 Using mV/V value
The instrument will request the value of the full-scale range to be entered using the previously
specified decimal places and units. E.g. if 2dp & kg had been selected, the display will show ‘
FS
Range---.--kg
’. Enter the value as a 5-digit value, including leading zeroes if appropriate.
The display will then show ‘
Value -.----mV/V
’ Enter the value from the load cell calibration
certificate.
The instrument then offers the opportunity to tare the input. With the load cell attached and no load
present, or with the signal wires shorted, press the appropriate tare button. If tare is not required,
e.g. if the mV/V value for a previously calibrated load cell is being adjusted, press any other key.
The display will move on to 3.7.