Fluke 7312, Руководство пользователя

Страница: 45 / 77

Press the “SET” button once more to reset the cutout.
S
Reset cutout
This action also switches the display to the set temperature function. To return
to displaying the temperature, press the “EXIT” button. If the cutout is still in
the over-temperature fault condition, the display continues to flash “cutout”.
The bath temperature must drop a few degrees below the cutout set-point be-
fore the cutout can be reset.
9.3 Temperature Set-point
The bath temperature can be set to any value within the range and with resolu-
tion as given in the specifications. The operator must know the temperature
range of the particular fluid used in the bath and the bath should only be oper-
ated well below the upper temperature limit of the liquid. In addition, the cutout
temperature should also be set below the upper limit of the fluid.
Setting the bath temperature involves three steps: 1) selecting the set-point
memory, 2) adjusting the set-point value, and 3) adjusting the vernier (if
desired).
9.3.1 Programmable Set-points
The controller stores 8 set-point temperatures in memory. The set-points can be
quickly recalled to conveniently set the bath to a previously programmed tem-
perature set-point.
To set the bath temperature, first select the set-point memory. This function is
accessed from the temperature display function by pressing the “SET” button.
The number of the set-point memory currently being used is shown at the left
on the display followed by the current set-point value.
25.00 C
Bath temperature in degrees Celsius
S
Access set-point memory
1, 25.0 Set-point memory 1, 25.0°C currently used
To change the set-point memory press the “UP” or “DOWN” button.
U
Increment memory
Press the “SET” button to accept the new selection and access the set-point
value.
S
Accept selected set-point memory
43
9 Controller Operation
Temperature Set-point