Watts HF scientific 28052, Руководство владельца и пользователя, Страница: 46 / 67

Catalog No. 29290 39
Rev 3 06/2020
•
If the MTOL+ finds a flash drive with a previous version of software it will
show the word FILE. You will need an updated file on the flash drive.
• Once installed the system will automatically turn off and restart. The entire
process takes up to 90 seconds to complete.
Be certain to check the configuration as changes may have taken
place either with new software or a new range.
•
You most likely will need to calibrate the instrument. You will see a screen
similar that shown below. See the next section to recalibrate the
instrument.
4.3 Calibrating the MTOL+, CAL Mode
•
The instrument was calibrated for the 0-100 NTU range and tested prior to
leaving the factory. Therefore, it is possible to use the instrument directly
out of the box. Under normal conditions, re-calibration is required once
every three months. Quarterly calibration ensures performance within
accuracy specifications.
The EPA and ISO recommend that on-line turbidimeters
be calibrated with a primary standard at least once
every three months if they are to be used for reporting purposes.
• Relay contacts and the 4-20mA will be frozen (held at the current state)
while the instrument is in the calibration mode. While in the calibration
mode, the instrument has a time-out feature that automatically returns the
system operation to the AUTO mode after a fifteen (15) minute period of
inactivity.