9
is at the same temperature. As with calibration it is most important not to
introduce any air.
When the desired temperature has been reached, remove the temperature
probe.
Press the “READ” key and the paddle will start to rotate.
At this time a value will appear on the display. After approximately 20 seconds the
paddle will stop rotating, but the measured value will remain on display for a further
10 seconds. At any time during this 30 second period the value may be stored by
depressing the “STORE” key.
The instrument will confirm that the value has been stored by showing the number 1
on the left of the display. The second reading to be stored will be indicated by the
number 2 and so on. The maximum number of readings which can be stored is 9.
The 9 stored values will remain in the memory (even if the instrument is switched off)
until the memory is cleared. If more than 9 readings are stored the instrument will
sound a warning tone.
This stored value will over write the last value held in memory. Holding the read key
will keep the paddle rotating until the key is released. This allows a longer test to be
performed.
Clearing the memory
Once this operation has been carried out, the memory should be cleared. Simply
depress the two centre keys “CLEAR” simultaneously. The instrument will confirm
that the memory
has been cleared by displaying “0” on the left hand side of the
display.
Microprocessor warning messages
“TOO HIGH- CHECK SAMPLE VALUE”
This message indicates that the sample of material to be tested has a viscosity beyond
the range of the instrument. The paddle will stop rotating to prevent damage to the
instrument by overloading the motor.
“PLEASE LOWER HANDLE”
This message will appear on the display if the “READ” key is depressed, but the
instrument head has not been lowered into the correct position. It also prevents the
instrument from being started with the paddle above the top of the recommended paint
tin and consequent throwing of sample material from the paddle.
Содержание SH1349
Страница 1: ...V2 1 0719 DIGITAL KREBS VISCOMETER 480 SH1349 Operating Manual ...
Страница 13: ...12 7Spares Calibration key required for instrument calibration SH7120 ...
Страница 15: ...14 ...