ISHIDA NOVA-II Setup Manual page 11

Follow the steps in the table below to calibrate the MTX/MTB Series scales.
NOTE:
Configuration settings must be set prior to calibrating the MTX/MTB series scale.
2.1.2 Calibration
Step
1 Press and hold the ZERO and TARE keys, then press the ON/OFF key.
2 Release the ON/OFF key first, then release both the ZERO and TARE keys.
the ON/OFF key for at least 2 seconds.
3 The displays shows CA–9. If CA–9 does not appears, press the ZERO key until the display shows
CA–9. Press the COUNT key to go to the next step.
4 Select the desired calibration weight using the ZERO or TARE key. Possible values are shown below:
DO NOT USE L–1.0 THROUGH L–5.0. THE SCALE WILL NOT CALIBRATE.
Use a test weight of 100% capacity for greatest accuracy. Press the COUNT key to go to the
NOTE:
next step.
The initial A/D value displays:
5 Press the ZERO key twice to obtain the value 2000.
6 Add weights to equal the value selected in Step 4. After the scale stabilizes, press the TARE key. The
scale should show 17000.
7 Remove the calibration weights. Repeat Steps 6 & 7 until the correct readings are obtained.
8 Remove the brass hex bolt on the rear of the indicator (see graphic below). Use a non-metallic
device to press the NVRAM switch on the circuit board, accessible through the bolt hole.
Using a metallic device can damage the unit. The display flashes P–EP.
9 Turn the unit off, then on. Check the calibration by placing a known weight on the scale.
10 Replace the brass hex bolt.
Model Capacity
MTX only 12 lb (6 kg)
60 lb (30 kg)
MTX/MTB 60 lb (30 kg)
300 lb (150 kg)
30 lb (15 kg)
150 lb (75 kg)
24 lb (12 kg)
120 lb (60 kg)
NVRAM switch
for setting calibration
Remove bolt
Figure 2-1. MTX/MTB calibration switch detail
Action
Display
G–5.0
G–1.0
G–2.0
G–2.5
Rear View of Display Unit
For the MTB, hold
NOTE:
(then 1700)
:
NOTE
Industrial Scales
Display
CA–9
G–1.0
nnnn
2000
CAL
2000
P–EP
7