Ametek JOFRA CTC-1200 A User manual

User manual
Temperature Calibrator
JOFRA CTC-140/320/650 A/B
JOFRA CTC-1200 A
Copyright 2005 AMETEK DENMARK A/S (123199-UK)
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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123199 04 1
List of contents
1.0 Introduction..................................................................... 2
1.1 List of equipment received................................................. 2
2.0 Safety instructions ......................................................... 3
3.0 Operating the calibrator ................................................. 8
3.1 Before use......................................................................... 8
3.2 Keyboard......................................................................... 11
3.3 Display ............................................................................ 11
3.4 Connections .................................................................... 12
3.5 Calibrator functions - overview......................................... 12
3.6 Selecting the set-temperature.......................................... 12
3.7 SWITCH TEST ................................................................ 13
3.8 AUTO STEP.................................................................... 14
3.9 MENU.............................................................................. 15
4.0 Setting the main voltage and replacing the fuses .... 16
5.0 After use........................................................................ 18
5.1 Switching off the calibrator............................................... 19
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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2 123199 04
1.0 Introduction
CTC-calibrators are temperature calibrators designed to calibrate
temperature sensors and temperature switches.
Read this manual carefully before using the instrument and make
sure that all safety instructions and warnings are observed.
1.1 List of equipment received
When you receive the instrument, the following should be enclosed:
1 calibrator
1 mains cable
1 set of test cables (1 black, 1 red)
1 insertion tube
1 tool for insertion tube
1 traceable certificate
1 reference manual
1 User manual
1 RS232 serial cable
1 CD-ROM containing software package “JOFRACAL”
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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4 123199 04
To ensure the connection to protective earth any
extension cord used must also have a protective earth
conductor.
Only use a mains power cord with a current rating as
specified by the calibrator and which is approved for the
voltage and plug configuration in your area.
Before switching on the calibrator make sure that it is
set to the voltage of the mains electricity supply.
Always position the calibrator to enable easy and quick
disconnection of the power source (mains inlet socket).
The calibrator must be kept clear within an area of 20
cm on all sides and 1 metre above the calibrator due to
fire hazard.
Never use heat transfer fluids such as silicone, oil,
paste, etc. in the dry-block calibrators. These fluids may
penetrate the calibrator and cause electrical hazard,
damage or create poisonous fumes.
The calibrator must be switched off before any attempt
to service the instrument is made. There are no user
serviceable parts inside the calibrator.
When cleaning the well or insertion tube, REMEMBER
to wear goggles when using compressed air!
About the front panel:
The connections used to test thermostats must NEVER
be connected to a voltage source.
Thermostats must not be connected to any other
voltage source during a test.
About the insertion tubes, insulation plug, well
and sensor:
Never leave hot insertion tubes which have been
removed from the calibrator unsupervised – they may
constitute a fire hazard or personal injury.
If you intend to store the calibrator in the optional
aluminium carrying case after use, you must ensure
that the instrument has cooled down to a temperature
below 100°C/212°F before placing it in the carrying
case.

123199 04 7
The humidity in the air may cause corrosion oxidation
on the insertion tube inside the instrument. There is a
risk that the insertion tube may get stuck if this is
allowed to happen.
If the calibrator is to be transported, the insertion tube
must be removed from the well to avoid damage to the
instrument. If the insertion tube is not removed from the
CTC-1200 A the ceramic well might crack.
Note…
The product liability only applies if the instrument is
subject to a manufacturing defect. This liability becomes
void if the user fails to follow the instructions set out in this
manual or uses unauthorised spare parts.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com

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Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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