PAGE 9
T E C A L 4 2 5 H O P E R A T O R ’ S M A N U A L
Programs that are created and saved on th calibrator can be modified and
deleted from the calibrator or from a PC.
Data that is saved on the calibrator can be created only whilst running a
program from the calibrator. This data can only be viewed from a PC, and
can only be deleted by the PC.
The calibrator can hold up to 10 programs and 25 sets of data. The number
of programs is restricted to 10 and the number of data sets is restricted to
25. They can both be as short or as long as you like. The longer they are
the less memory is available for saving other programs or data.
Switch test
In a switch test, the contacts of a thermostat are connected to the calibrator,
with the thermostat placed in the temperature controlled block. A temperature
change is then initiated by one of the above methods. When the switch point
of the thermostat is reached, the contacts switch over (either making or
breaking the circuit). The switch must be connectd prior to starting a run.
Warning
HIGH TEMPERATURES ARE DANGEROUS: they can cause serious burns
to operators and ignite combustible material.
Techne have taken great care in the design of these units to protect
operators from hazards, but operators should pay attention to the following
points:
•
USE CARE AND WEAR PROTECTIVE GLOVES TO PROTECT
HANDS;
•
DO NOT put hot objects on or near combustible objects;
•
DO NOT operate the unit close to inflammable liquids or gases;
•
DO NOT place any liquid directly in your Tecal unit;
•
DO NOT place the unit into its carrying case if the block temperature
exceeds 50
°
C;
•
If you are using a cooling probe, make sure that water is flowing
through the cooling probe BEFORE inserting the probe into the block;
•
At all times USE COMMON SENSE.
Packing
When you receive your unit, make sure you keep the original packing in case
you ever need to return it for service or repair. When returning a unit,
remember to remove the insert from the temperature controlled block.
The unit must be transported in the original packing to avoid damage. The
packing comprises; the unit in the soft carrying case, packed with foam into
an outer cardboard box. Techne accepts no responsibility for damage
incurred unless the unit is correctly packed and transported in this way.
