Ametek Land RT8B Manuel utilisateur
Low Temperature Standalone Thermometer
i
RT8B THERMOMETER
USER GUIDE
PUBLICATION NO815692
LANGUAGE: ENGLISH
ISSUE: 1
DATE: 14 SEPTEMBER 2022
QUALITY CUSTOMER SOLUTIONS
Health and Safety Information
Read all of the instructions in this booklet - including all the WARNINGS and CAUTIONS
- before using this product. If there is any instruction which you do not understand, DO
NOT USE THE PRODUCT.
Safety Signs
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result in death or
personal injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, could result in minor or
moderate injury to the user or users, or result in damage to the product or to property.
NOTE
Indicates a potentially hazardous situation which, if not avoided, could result in damage or loss of data.
Signs and Symbols used on equipment and Documentation
Caution, risk of electric shock.
Caution, attention to possibility of risk of damage to the product, process or surroundings. Refer
to instruction manual.
Caution, hot surface.
Protective Conductor Terminal.
Observe precautions for handling electrostatic discharge sensitive devices.
Equipment Operation
Use of this instrument in a manner not specied by AMETEK Land may be hazardous. Read and
understand the user documentation supplied before installing and operating the equipment.
The safety of any system incorporating this equipment is the responsibility of the assembler.
Protective Clothing, Face and Eye Protection
It is possible that this equipment is to be installed on, or near to, machinery or equipment operating at
high temperatures and high pressures. Suitable protective clothing, along with face and eye protection
must be worn. Refer to the health and safety guidelines for the machinery/equipment before installing
this product. If in doubt, contact AMETEK Land.
Wear Protective Gloves Wear Protective Clothing
Wear Eye Protection Wear Ear Protection
Wear Safety Boots Wear Face Protection
Electrical Power Supply
Before working on the electrical connections, all of the electrical power lines to the equipment must
be isolated. All the electrical cables and signal cables must be connected exactly as indicated in these
operating instructions. If in doubt, contact AMETEK Land.
IMPORTANT INFORMATION - PLEASE READ
For further details on all AMETEK Land offices, distributors and representatives, please visit our website.
Storage
The instrument should be stored in its packaging, in a dry sheltered area.
The maximum storage temperature is 10 °C (18 °F) higher than the maximum operating temperature. The
minimum storage temperature is 10 °C (18 °F) lower than the minimum operating temperature. Refer to
the Technical Specification for details of the operating temperature limits.
Unpacking
Check all packages for external signs of damage. Check the contents against the packing note.
Lifting Instructions
Where items are too heavy to be lifted manually, use suitably rated lifting equipment. Refer to the
Technical Specification for weights. All lifting should be carried out in accordance with local and national
regulations.
Return of Damaged Goods
IMPORTANT If any item has been damaged in transit, this should be reported to the carrier and to the
supplier immediately. Damage caused in transit is the responsibility of the carrier not the supplier.
DO NOT RETURN a damaged instrument to the sender as the carrier will not then consider a claim. Save
the packing with the damaged article for inspection by the carrier.
Return of Goods for Repair
If you need to return goods for repair please contact our Customer Service Department for details of the
correct returns procedure.
Any item returned to AMETEK Land should be adequately packaged to prevent damage during transit. You
must include a written report of the problem together with your own name and contact information,
address, telephone number, email address etc.
Design and Manufacturing Standards
The Quality Management System of Land Instruments International is approved to BS EN ISO 9001 for
the design, manufacture and on-site servicing of combustion, environmental monitoring and non-contact
temperature measuring instrumentation.
Registered ISO 9001 Management System approvals apply in the USA.
UK Calibration Laboratory: UKAS 0034.
USA Calibration Laboratory: ANAB Accredited ISO/IEC 17025.
National Accreditation Board for Testing and Calibration Laboratories approvals apply in India.
Operation of radio transmitters, telephones or other electrical/electronic devices in close proximity
to the equipment while the enclosure doors of the instrument or its peripherals are open, may cause
interference and possible failure where the radiated emissions exceed the EMC directive.
The protection provided by this product may be invalidated if alterations or additions are made to the
structural, electrical, mechanical, pneumatic, software or firmware components of this system. Such
changes may also invalidate the standard terms of warranty.
Copyright
This manual is provided as an aid to owners of AMETEK Land’s products and contains information
proprietary to AMETEK Land. This manual may not, in whole or part, be copied, or reproduced without the
expressed written consent of AMETEK Land.
Low Temperature Thermometer
RT8B
User Guide
Contents
1 Introduction 1
1.1 General Introduction 1
1.2 About the RT8B thermometer 1
2 Instrument Specications 2
2.1 Specication Table 2
2.2 Thermometer Dimensions 3
2.3 Target Spot Size 3
2.4 Thermometer Installation 4
3 Electrical Connections 5
3.1 General Connections 5
3.2 Loop Resistance 6
4 Thermometer Operation 7
4.1 General 7
4.2 Location of Controls 7
4.3 Adjusting the ‘Emissivity’ Setting 8
4.4 Adjusting the Averager ‘Response Speed’ Setting 9
4.5 Settings Archive 9
5 Mountings and Accessories 10
5.1 General 10
5.2 Services 11
6 Maintenance 12
6.1 General 12
7 Emissivity 13
7.1 Refractories 13
7.2 Alloys 14
7.3 Miscellaneous 14
7.4 Metals 15
Low Temperature Thermometer RT8B
User Guide 1
1.1 General Introduction
This publication provides the necessary information required to safely operate the
AMETEK Land RT8B Thermometer.
It is important to fully check all equipment with which you have been supplied.
The equipment must only be used, maintained and serviced by suitably trained
personnel, capable of carefully following the procedures and guidelines given in this
User Guide.
This User Guide should be read thoroughly before proceeding with any operations
detailed within it and it is advisable that it is kept readily available, for reference when
the equipment is in general use.
1.2 About the RT8B thermometer
The AMETEK Land RT8B Thermometer is a highly accurate, non-contact infrared
thermometer, designed for independent or ‘stand alone’ applications.
The thermometer features include:
• stand alone operation
• adjustable response speed
• 4 to 20mA loop powered output, linear over the temperature span of
the instrument
• built-in emissivity controls
INTRODUCTION
1
Fig. 1 AMETEK Land RT8B thermometer
Low Temperature Thermometer
RT8B
User Guide
2
Operating Temperature Range:
(focused at innity)
RT80B
RT81B
RT82B
RT83B
0 to 250°C
0 to 500°F
0 to 500°C
0 to 1000°F
Specied Temperature Range: RT80B
RT81B
RT82B
RT83B
0 to 250°C
30 to 500°F
0 to 500°C
30 to 1000°F
Output: Linear 4 to 20mA over temperature range
Field of view: See section 2.2
Emissivity: 0.1 to 1.09 adjustable in steps of 0.01
Waveband: 8 to 14μm (nominal)
Response time(3t): 1 to 10s (adjustable)
Resolution: <0.2°C
Accuracy: <2°C
Ambient temperature limits: -5 to 50°C/23 to 122°F (specied)
-5 to 70°C/23 to 158°F (storage)
Drift with ambient temperature: <1.5° per 10° change in ambient temperature
Drift with time: <1°C (2°F) per year
Power supply voltage limits: 11 to 45V d.c. (26V d.c. nominal)
Maximum load resistance: 1KΩ
EMC: EN 50 082-2 (immunity)
EN 50 081-1 (emission)
IEC 61010 (electrical safety)
Sealing: Designed to meet IP65/NEMA4 requirements
Vibration: 3g any axis (10 to 300Hz)
Weight: 0.5kg/1.1lb
2.1 Specification Table
INSTRUMENT
SPECIFICATIONS
2
Low Temperature Thermometer RT8B
User Guide 3
2.2 Thermometer Dimensions
Fig. 2 RT8B thermometer dimensions
2.3 Target Spot Size
Fig. 3 RT8B thermometer target spot size table
114/4.49
80.5/3.17 158/6.22
Mounting pad: 2 holes, 1/4in BSW,
7/0.3 deep on 25/0.98 centres
All dimensions in mm/in
Not to scale
0.83 1.02 1.34 2.13 3.39 4.80 6.14
Minimum Target Size (mm)
Distance to Target (mm)
Minimum Target Size (in)
Distance to Target (in)
0 300 500 1000 1500 2000 2500
21 26 34 54 86 122 156
0 11.8 19.7 39.4 59.1 78.7 98.4
Low Temperature Thermometer
RT8B
User Guide
4
The AMETEK Land RT8B thermometer operates by sensing radiation from within a well
dened ‘eld of view’. The intersection of this eld of view with the intended target,
determines the ‘target spot’, the area where the temperature is measured. Fig. 3 shows
the RT8B thermometer target spot size table.
2.4 Thermometer Installation
The location of the RT8B thermometer should be carefully chosen, such that it is
easily accessible and in a position not unnecessarily exposed to heat, fumes or liquid
spray. The sight path between the thermometer and the target, should be as free as
possible from smoke, liquid spray and from the intrusion of machinery. The axis of
the thermometer should be at right angles to the target surface, however, an angle of
up to 45° from the normal is acceptable. It is also important that the intended target
completely lls the thermometer eld of view at the selected installed distance and
that no part of the sight path is obstructed.
NOTE
In some RT8B applications, a sighting tube may be required to eliminate any
unwanted reections from entering the thermometer and to keep the sight path
clear from obstructions. Sighting tubes can also be used to create a ‘stand-o’,
between the thermometer and the process under observation.
When selecting a suitable sighting tube, it is important to ensure that the internal
bore of the tube is at least 25% greater than the largest target spot size over the
tubes length. All distances must be measured from the thermometer datum, which
is located at the front of the thermometer.
When choosing a suitable location for mounting the RT8B thermometer, the following
criteria should be considered:
• If the installation area is not clean or free from dust, smoke or water spray,
then an AMETEK Land air purge system must be utilised to ensure that the
thermometer lens is kept free from such airborne contaminants. Ensure that a
suitably conditioned air supply is available.
• If the surrounding ambient temperatures of the installation area are outside
the thermometer specication, then an AMETEK Land water cooled protective
jacket must be utilised to ensure that the thermometer operates at the specied
ambient temperature. Ensure that a suitably conditioned water supply is available.
Low Temperature Thermometer RT8B
User Guide 5
3.1 General Connections
The electrical connections for the RT8B thermometer power supply and temperature
output are made via the 6-way socket on the rear of the thermometer (see Fig. 6).
The connection to the thermometer can be made via any of the following:
• Pre-wired 4m cable (AMETEK Land Part No. 029.673)
• 6-way plug (AMETEK Land Part No. 206.551)
• 6-way plug housed in protective jacket end cap (AMETEK Land Part No. 091.562)
Thermometer Pin Function Cable Colour End Cap Pin No.
1- - -
2- - -
3 V+, 4 to 20mA Red 5
4- - -
5- - -
6 V-, 4 to 20mA Black 6
To connect the 6-way plug to the RT8B thermometer (see Fig. 4):
• Align the red marker near the lugs of the plug, with the red marker
located above the keyway in the thermometer socket.
• Push the plug into the socket, ensuring that the locking sleeve slides
forwards, locking the plug to the socket.
To disconnect the 6-way plug to the RT8B thermometer:
• Grip the locking sleeve portion of the plug.
• Slide the locking sleeve rearwards to release the locking mechanism and
disconnect the plug from the thermometer socket.
ELECTRICAL
CONNECTIONS
3
Locking Sleeve
Lugs Keyway
Red Markers
Fig. 4 Connecting the 6-way plug to the RT8B Thermometer
Low Temperature Thermometer
RT8B
User Guide
6
3.2 Loop Resistance
The maximum allowable loop resistance in the RT8B thermometer current loop, for a
given power supply voltage, is illustrated in Fig. 5.
NOTE
The system load resistance includes the cable resistance and the indicator resistance.
Fig. 5 Graph showing load resistance versus power supply voltage
0 5 10 15 20 25 30 35
1000
900
800
700
600
500
400
300
200
100
0
Power Supply Voltage (V)
Maximum Loop Resistance (ohms)
Ce manuel convient aux modèles suivants
4
Table des matières
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