Omega Products CL552 Installation Manual

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CL552

Portable Temperature Calibrato

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The information contained in this document is believed to be corrected but OMEGA Engineering Inc. accepts no liability for any errors it

WARNING: These products are not designed for use in, and should not be used for, patient connected applications.

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2

INTRODUCTORY NOTE

TTENTION: THIS MANUAL MUST BE REFERRED TO INSTRUMENTS WITH SERIAL N. 015298 ONWARDS.

A

This publication contains operating instructions, as well as a description of the principles of operation, of the
CL552 portable temperature calibrator. The information covers all models of the instrument, including the
basic equipment and its options and accessories.
The instructions reported in this manual, for the above mentioned equipment, are those relevant to:

• Start-up preparation

• Operation description

• Start-up instructions

• Shut-down instructions

• Typical faults and their remedies

OMEGA has used the best care and efforts in preparing this book and believes the information in this
publication are accurate. The OMEGA Products are subjected to continuous improvement, in order to pursue
the technological leadership; these improvements could require changes to the information of this book.

OMEGA reserves the right to change such information without notice.
OMEGA makes no warranty of any kind, expressed or implied, with regard to the documentation contained in

this book. OMEGA shall not be liable in any event - technical and publishing error or omissions - for any
incidental and consequential damages, in connection with, or arising out of the use of this book.

The instrument uses sophisticated analog and digital technologies. Repair and service require highly
qualified personnel. OMEGA Engineering, inc will supply, on request, all pertinent instructions and
procedures for service and calibration. OMEGA Engineering, inc specialists will be glad to give any
technical support you may require.

No part of this document may be stored in a retrieval system, or transmitted in any form, electronic or
mechanical, without prior written permission of OMEGA.

WARNING

THE CALIBRATOR CONTAINS CERAMIC FIBRE. AVOID COMING INTO CONTACT WITH THIS MATERIAL AND, IN ANY CASE, TAKE THE

NECESSARY PRECAUTIONS WHEN HANDLING THE CALIBRATOR.

WARNING

HAZARDOUS VOLTAGE IS PRESENT IN THIS ELECTRICAL EQUIPMENT DURING OPERATION.

NON-OBSERVANCE OF THE SAFETY INSTRUCTION CAN RESULT IN SEVERE PERSONAL INJURY OR PROPERTY DAMAGE.

ONLY QUALIFIED PERSONNEL SHOULD WORK ON OR AROUND THIS EQUIPMENT AFTER BECOMING FAMILIAR WITH ALL WARNINGS,

SAFETY NOTICES, AND MAINTENANCE PROCEDURES CONTAINED HEREIN.

ONLY QUALIFIED PERSONNEL OR OUR PERSONNEL SHOULD WORK ON THIS EQUIPMENT FOR MAINTENANCE OPERATION.

THE SUCCESSFUL AND SAFE OPERATION OF THIS EQUIPMENT IS DEPENDANT ON PROPER HANDLING, OPERATION AND MAINTENANCE

3

TABLE OF CONTENTS

1 GENERAL PERFORMANCE ............................................................................................................... 5

1.1 Specifications................................................................................................................................................... 6

2 GENERAL FEATURES........................................................................................................................ 7

2.1 Main switch ...................................................................................................................................................... 7

2.2 Thermal characteristics.................................................................................................................................... 7

2.3 Temperature sensors....................................................................................................................................... 7

2.4 Temperature protection.................................................................................................................................... 7

2.5 Ventilation holes............................................................................................................................................... 7

2.6 External digital indicator ................................................................................................................................... 7

2.7 Serial communication....................................................................................................................................... 7

2.8 Carrying handle................................................................................................................................................ 7

3 PHYSICAL DESCRIPTION .................................................................................................................. 8

4 FUNCTIONAL DESCRIPTION............................................................................................................. 9

2.4 Heating resistance ........................................................................................................................................... 9

2.5 Equalizing block ............................................................................................................................................... 9

4.1 Temperature controller..................................................................................................................................... 9

4.2 Temperature sensors..................................................................................................................................... 10

4.3 Keyboard........................................................................................................................................................ 10

4.4 Display ........................................................................................................................................................... 10

5 PRE-OPERATIONAL CHECK ........................................................................................................... 11

5.1 Unpacking ...................................................................................................................................................... 11

5.2 Supply ............................................................................................................................................................ 11

5.3 Thermocouple wires....................................................................................................................................... 11

6 OPERATION & APPLICATION ......................................................................................................... 13

6.1 Recommendations ......................................................................................................................................... 13

6.2 Start-up .......................................................................................................................................................... 13

6.2.1 Preparation for the start-up........................................................................................................................ 13

6.2.2 How to fit the equalizing block ................................................................................................................... 14

6.2.3 Start-up instructions .................................................................................................................................. 14

6.3 Cooling........................................................................................................................................................... 16

7 SERIAL INTERFACE ......................................................................................................................... 17

8 MAINTENANCE ................................................................................................................................. 18

8.1 Typical faults ..................................................................................................................................................18

8.2 Safety recommendations ...............................................................................................................................18

8.3 Protections ..................................................................................................................................................... 19

8.4 Calibration...................................................................................................................................................... 19

8.5 Storage ..........................................................................................................................................................19

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1 GENERAL PERFORMANCE

An highly accurate and powerful system to test and calibrate temperature sensors built into a transportable and compact
instrument.
The temperature parameter represents the most important factor to fulfil quality, operational safety and reliability of
industrial processes.
Thermocouples, resistance thermometers and any other temperature sensor, when installed in an industrial process,
should be inspected as they undergo mechanical, thermal and chemical stresses which accelerate their aging.
Therefore, it is a recommended procedure to inspect, check and calibrate each sensor during the commissioning phase
and at regular-programmed time intervals.

The temperature calibrator series CL552 is a transportable unit designed to obtain a controlled temperature with high
stability, high uniformity in a range from +200 °C to +1100 °C.

The internal metal block, designed with a self-lock feature to avoid dangerous undesired block drop , is interchangeable
and standard equipped with a multiple hole block with an immersion depth of 155 mm.

The portable temperature calibrator CL552 is a multifunction instrument designed to meet the needs of instrumentation
engineers, both in laboratory and in fieldwork.

Accurate, compact, rugged, easy to use; the ideal solution to test and calibrate:

• thermocouples

• resistance thermometers

• thermostats

• gas filled thermometers

• mercury thermometers

• material thermal test

CL552 has been designed using the most advanced thermal and electronic technologies to provide high stability and
accuracy with easy operation combined with a powerful operating flexibility.

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1.1 Specifications

• Range:

from +200 to +1100 °C

• Stability:

±

±0.3 °C at 1100°C. Data recorded with ambient temperature of 20°C

thermocouples type N and type K inserted inside the block.

• Reading accuracy:

± (0.2% + 1 digit) at 1000°C

• Radial Uniformity:

± 0.2 °C at 800°C

• Axial Uniformity:

± 0.3 °C at 100mm depth

• Heating rate:

17 °C/min (from +250 °C to + 1000 °C). Data recorded with ambient temperature of 20°C

Vac

±

10% and thermocouples type N and type K inserted inside the block.

• Cooling rate

6 °C/min (from +1000 to +300 °C). Data recorded with ambient temperature of 20°C

±

10% and thermocouples type N and type K inserted inside the block.

• Stabilising time:

approximately 20 min.

• Internal metal block:

standard INCONEL600 ø44x175mm depth with n. 6 holes ø 6.5 / 9.5 / 4.75 / 19 / 3.25 / 8.0 mm x 155mm depth

• Dimensions:

Oven: ø44 mm x 200 mm
Metal Block: ø44 mm x 175 mm

• Display:

LED display 2 lines of 4 digits

• Display resolution:

1 °C

• Regulating System:

PID microprocessor

• Tc Reference:

Type N connected to the PID regulator

• Thermal protection.

Thermostat with type K thermocouple

• Digital interface:

RS 232

• Power:

1200 VA

• EMC:

EN50081-I / EN50082-2

• Chassis:

separate shell for thermal and electronic sections with a carrying handle

• Size and Weights:

200 x 330 x 420 mm

Net 12 kg Gross 17 kg

3°C, power supply of 230 Vac ±10% and

±

3°C, power supply of 230

±

3°C, power supply of 230 Vac

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2 GENERAL FEATURES

2.1 Main switch

The main switch can be found on the rear of the instrument; it is fitted with a socket for the voltage cable, a main switch
and two fuses of 6A for 230V mod. & 8A for 115V models.

OTE: USE ONLY FUSES F. 6,3X32 MM

N

All the electrical part can be found below the main switch; we recommend allowing calibrator cooling before switching it
off.

2.2 Thermal characteristics

The Inconel 600 block is inserted in to a resistor heated quartz tube ; the special alloy block insert , provides uniform
temperature all over it. The fan fitted inside the regulating block, expels the hot air from the rear of the equipment ; in this
way the head connection of the probe is always at ambient temperature. The internal microcontroller system handles,
through the keyboard, man-machine communications, the internal logic and grants the stability of the internal thermal
equalizing metal block of ±0.3 °C. The temperature control uses a sophisticated PID algorithm with memory stored
optimized tuning constants.

2.3 Temperature sensors

The temperature sensor used to adjust the instrument is an N thermocouple; the sensor used for protection is a K
thermocouple. Both are inserted directly into the equalizing block in order to supply a temperature value close to the real
value in the block. However, there could be some differences due to the tolerance of the sensors themselves.

2.4 Temperature protection

A light has been fitted on the rear part of the calibrator in order to warn that the safety device has been triggered by
reaching maximum temperature. When the temperature inside the calibrator is over 1150°C the lamp is on while the
heating has been switched off; the safety device is automatically reset at a temperature of about 1100°C. If the light is
on only temporarily and this situation is not going to repeat, there are no problems; if, however, this situation should be
repeated, the technical assistance service should be contacted in order to detect a possible fault.

2.5 Ventilation holes

Holes have been made on the base and on the rear of the calibrator so that air may circulate inside the calibrator; do not
obstruct these ventilation holes.

2.6 External digital indicator

When high accuracy is required, the portable temperature calibrator CL552 can be used in combination with high
accuracy and with an external high accuracy calibrated resistance thermometer (ask OMEGA for the pertinent literature).

2.7 Serial communication

CL552 is standard equipped with a full bi-directional RS232 digital interface for communication with a Personal

Computer. The transportable temperature calibrator can be part of an automatic calibration system with a programmable
cycle and the acquisition of all data can be required to generate a full calibration report. OMEGA engineers are ready to
support you with components, accessories and software that can fulfil your application requirements.

2.8 Carrying handle

The calibrator is fitted with a multi-position carrying handle which makes it easy to use as the handle can be placed so as
not to get in the way of the user. Never leave the handle lifted with the calibrator switch on at high temperatures

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