Hardness Tester DHT-200
PLUS
18
6.8 Deleting of wrong measuring data
During measurements, some measuring values are obviously error data;
press the key
to delete these values conveniently.
7. Repairing and Maintenance
In order to keep the accuracy and reliability of the instrument, it is
necessary of timely evaluation and maintenance.
7.1 Maintenance of battery
The battery of DHT-200PLUS should be charged timely to avoid damage.
The proper charging time is about 5 to 6 hours. If this instrument is not used
for long time, it is suggested to charge once per month to keep live of
batteries.
Prompt: During measurements, if the battery power is too low, 4 AA
standard batteries can be used temporarily.
7.2 Maintenance of impact body tip
Owing to the abrasion of impact body tip,
if it shows within the range of
tolerance (±6HLD) on testing the block comes with the delivery, but out of
range of repeatability (the maximum value minus the minimum value less
than 12HLD), please replace the impact body and do calibration again. If it
does not show within the range of tolerance, but repeatability is good, please
make change through the Menu CALIBRATION. For details please refer to
“6.5.3 calibration”.
7.3 Maintenance of impact device cable
During measurements, the impact cable may be damaged, just replace it
with a new one.
7.4 Maintenance of printer ribbon
The ribbon of printer should be changed periodically for clear printing.
Users can get the ribbon from local suppliers or from us.
7.5 Maintenance of instrument
The Leeb Hardness Tester DHT-200PLUS has endured strict checking. It
completely conforms to the national standards and our company standards.
The following after sales services are guaranteed:
1. In the first 3 months after purchasing, we supply complete free repairing
and exchanging.
