Comark C9040 Installation Manual

C9040 Operator Instructions

1. INTRODUCTION

The C9040 is a handheld, thermocouple simulator. It has

been designed specically for the simple checking of ther­mocouple thermometers by simulating one of ve selectable
temperatures to give a reading on the test instrument. The
C9040 is available in three versions.
C9040K type K sub-miniature plug.
C9040TM type T sub-miniature plug.
C9040TL type T lumberg plug.
The C9040 is highly stable and is supplied with a UKAS
certicate of calibration.

2. PREPARATION FOR USE

A BATTERY TEST must be performed before use to ensure
that enough power is available for temperature simulations.

Switch on the C9040 and set the rotary control to BATTERY
TEST.

The LED on the front of the instrument marked TEST should
glow brightly. If the LED is dim or does not glow at all, then
the battery should be replaced.

Note: Do not leave the instrument in BATTERY TEST mode
as this drains the battery quickly.

3. CONNECTING THE C9040 TO THE
THERMOMETER TO BE TESTED.

Two calibration checks are possible with the C9040:

a) A quick calibration check to an uncertainty +/- 0.5°C

b) A longer test giving readings to an uncertainty +/-

0.2°C

The two types of test are described as follows:

a) Quick Test to +/- 0.5°C

This is the most likely test and will allow the
instrument to be tested for basic functionality to an
uncertainty of +/- 0.5°C. The C9040 and the
instrument on test must have been in the same
ambient conditions for at least 15 minutes. Connect

the C9040 to the thermometer to be tested at least 2

minutes prior to checking the calibration. Switch on
the C9040 using the Blue button on the side of the
instrument once. This will allow 3 minutes of
continuous operation, before auto-switch off. Switch
on the thermometer to be tested. Select the
appropriate output on the C9040 using the rotary
control. Check the reading on the thermometer to be
tested. The reading should be within +/- 0.5°C +/- the
instrument under test specication, of the selected
temperature. No reference to the UKAS certicate
is required.

b) Thorough Test to an uncertainty of +/- 0.2°C

This test is performed exactly as the above except for the
following changes:

The two instruments must be left in the same environment for
at least 2 Hrs and during this time the C9040 should remain

connected. For best results the test should be conducted in a

stable temperature environment.

NOTE (Thorough Test): When assessing the reading on the
thermometer under test, an allowance must be made for the
accuracy of the C9040. Refer to your UKAS certicate for

details.

NOTE (All Tests): Just prior to auto-switch off readings may
become erratic. To continue correct operation simply press
the on/off button once more to provide another 3 minutes of

continuous operation.

4. UKAS CERTIFICATION

The C9040 is supplied complete with a UKAS certicate
of calibration produced in the Comark UKAS accredited
calibration laboratory. To ensure continued correct
operation and optimum performance it is recommended
that the C9040 is returned at least annually for a calibration
check and issue of new UKAS certicate.

5. SPECIFICATION

Temperature Range

Type K -20°C, 0°C, +50°C, +100°C, +500°C
Type T -18°C, 0°C, +5°C, +70°C, +100°C

Each output is calibrated to be accurate to ±0.2°C at +23°C. Refer to the
UKAS certicate of calibration for calibrated results.

Cold Junction
Specication 0.05°C/°C away from +23°C

Ambient Operating

Conditions

Temperature +18°C to +28°C
Humidity 10-90%RH Non-condensing

Storage 0 to +40°C
Battery PP3,6LF22
Battery life 500 hrs normal use.
Note: Extensive use of the BATTERY TEST function will seriously reduce
battery life.
EMC Emission — EN 50081-1
No emissions above EN 55 022
Class B limits
Immunity — EN 50082-1

Performance to Criterion B
Dimensions L 117mm x W 70mm x D 35mm
Weight 120g excluding battery

Comark Instruments,
52 Hurricane Way, Norwich, Norfolk, NR6 6JB England
Telephone: 01603 ([phone]

Fax: 01603 ([phone]

© Comark Instruments

Stock No. 17192 Issue 7 (08/10)