RayTek MARATHON MM SERIES User manual

MARATHON MM
SERIES
High-Performance Infrared Thermometer
Operating Instructions
Rev. D7 Jul 2017
58201

Contacts
Fluke Process Instruments

Americas
Santa Cruz, CA USA
Tel: [phone] (USA and Canada, only)
[phone]
[e-mail]
EMEA
Berlin, Germany
Tel: [phone]
[e-mail]
China
Beijing, China
Tel: [phone]
[e-mail]
Worldwide Service
Fluke Process Instruments offers services,
including repair and calibration. For more
information, contact your local office.
www.raytek.com
© Fluke Process Instruments
Specifications subject to change without notice.

WARRANTY
The manufacturer warrants this instrument to be free from defects in material and workmanship under normal use
and service for the period of two years from date of purchase. This warranty extends only to the original purchaser.
This warranty shall not apply to fuses, batteries, or any product which has been subject to misuse, neglect, accident,
or abnormal conditions of operation.
In the event of failure of a product covered by this warranty, the manufacturer will repair the instrument when it
is returned by the purchaser, freight prepaid, to an authorized Service Facility within the applicable warranty
period, provided manufacturer’s examination discloses to its satisfaction that the product was defective. The
manufacturer may, at its option, replace the product in lieu of repair. With regard to any covered product returned
within the applicable warranty period, repairs or replacement will be made without charge and with return freight
paid by the manufacturer, unless the failure was caused by misuse, neglect, accident, or abnormal conditions of
operation or storage, in which case repairs will be billed at a reasonable cost. In such a case, an estimate will be
submitted before work is started, if requested.
THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED,
INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS, OR
ADEQUACY FOR ANY PARTICULAR PURPOSE OR USE. THE MANUFACTURER SHALL NOT BE LIABLE
FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, WHETHER IN CONTRACT, TORT,
OR OTHERWISE.
SOFTWARE WARRANTY
The manufacturer does not warrant that the software described herein will function properly in every hardware
and software environment. This software may not work in combination with modified or emulated versions of
Windows operating environments, memory-resident software, or on computers with inadequate memory. The
manufacturer warrants that the program disk is free from defects in material and workmanship, assuming normal
use, for a period of one year. Except for this warranty, the manufacturer makes no warranty or representation,
either expressed or implied, with respect to this software or documentation, including its quality, performance,
merchantability, or fitness for a particular purpose. As a result, this software and documentation are licensed “as
is,” and the licensee (i.e., the User) assumes the entire risk as to its quality and performance. The liability of the
manufacturer under this warranty shall be limited to the amount paid by the User. In no event shall the
manufacturer be liable for any costs including but not limited to those incurred as a result of lost profits or revenue,
loss of use of the computer software, loss of data, the cost of substitute software, claims by third parties, or for other
similar costs. The manufacturer’s software and documentation are copyrighted with all rights reserved. It is illegal
to make copies for another person.
Specifications subject to change without notice.

COMPLIANCE STATEMENT
The device complies with the requirements of the European Directives:
EC –Directive 2014/30/EU –EMC
EC –Directive 2011/65/EU –RoHS II
EN 61326-1: 2013 Electrical measurement, control and laboratory devices -
Electromagnetic susceptibility (EMC)
EN 50581: 2012 Technical documentation for the evaluation of electrical products with respect
to restriction of hazardous substances (RoHS)
Electromagnetic Compatibility Applies to use in Korea only. Class A
Equipment (Industrial Broadcasting & Communication Equipment)
This product meets requirements for industrial (Class A) electromagnetic wave equipment and
the seller or user should take notice of it. This equipment is intended for use in business
environments and is not to be used in homes.

Content
COMPLIANCE STATEMENT .......................................................................................................................... 5
CONTENT ............................................................................................................................................................ 6
1 SAFETY INSTRUCTIONS ........................................................................................................................... 10
2 PRODUCT DESCRIPTION.......................................................................................................................... 13
3 TECHNICAL DATA ...................................................................................................................................... 14
3.1 MEASUREMENT SPECIFICATIONS............................................................................................................... 14
3.2 OPTICAL SPECIFICATIONS.......................................................................................................................... 16
3.2.1 Variable Focus..................................................................................................................................... 16
3.2.2 Fixed Focus ......................................................................................................................................... 17
3.3 ELECTRICAL SPECIFICATIONS .................................................................................................................... 22
3.4 ENVIRONMENTAL SPECIFICATIONS ........................................................................................................... 22
3.5 DIMENSIONS............................................................................................................................................... 23
3.6 SCOPE OF DELIVERY ................................................................................................................................... 23
4 BASICS............................................................................................................................................................. 24
4.1 MEASUREMENT OF INFRARED TEMPERATURE .......................................................................................... 24
4.2 EMISSIVITY OF TARGET OBJECT.................................................................................................................. 24
5 ENVIRONMENT............................................................................................................................................ 25
5.1 AMBIENT TEMPERATURE ........................................................................................................................... 25
5.2 ATMOSPHERIC QUALITY ............................................................................................................................ 25
5.3 ELECTRICAL INTERFERENCE ...................................................................................................................... 25
6 INSTALLATION ............................................................................................................................................ 26
6.1 MECHANICAL INSTALLATION ................................................................................................................... 26
6.1.1 Distance to Object .............................................................................................................................. 26
6.1.2 Variable Focus..................................................................................................................................... 26
6.1.3 Viewing Angles................................................................................................................................... 27
6.2 ELECTRICAL INSTALLATION ...................................................................................................................... 28
6.3 COMPUTER INTERFACING .......................................................................................................................... 30
6.4 MULTIPLE SENSORS IN A NETWORK.......................................................................................................... 32
6.4.1 Wiring ................................................................................................................................................ 32
6.4.2 Addressing.......................................................................................................................................... 33
6.4.3 Configuration Procedure .................................................................................................................... 33
7 OPERATION................................................................................................................................................... 34
7.1 CONTROL PANEL ....................................................................................................................................... 34
7.2 OPERATION MODES ................................................................................................................................... 34
7.3 SIGNAL PROCESSING .................................................................................................................................. 37
7.3.1 Averaging ........................................................................................................................................... 37
7.3.2 Peak Hold............................................................................................................................................ 38
7.3.2.1 Reset ............................................................................................................................................. 38
7.3.2.2 Signal Slope ................................................................................................................................. 39
7.3.3 Advanced Peak Hold........................................................................................................................... 40
7.3.4 Valley Hold ......................................................................................................................................... 41
7.3.5 Advanced Valley Hold ........................................................................................................................ 41

7.4 INPUTS AND OUTPUTS................................................................................................................................42
7.4.1 Milliamp Output.................................................................................................................................42
7.4.2 Relay Output.......................................................................................................................................42
7.4.2.1 Thresholds....................................................................................................................................42
7.4.2.2 Deadband .....................................................................................................................................43
7.4.3 External Input.....................................................................................................................................44
7.4.3.1 Trigger ..........................................................................................................................................44
7.4.3.2 Ambient Background Temperature Compensation ...............................................................45
7.4.3.3 Emissivity Setting........................................................................................................................47
7.5 FACTORY DEFAULTS...................................................................................................................................48
8 OPTIONS .........................................................................................................................................................49
8.1 LASER SIGHTING.........................................................................................................................................49
8.2 VIDEO SIGHTING.........................................................................................................................................50
8.3 AIR/WATER COOLED HOUSING.................................................................................................................53
8.3.1 Avoidance of Condensation .................................................................................................................54
9 ACCESSORIES................................................................................................................................................55
9.1 OVERVIEW...................................................................................................................................................55
9.2 FIXED MOUNTING BRACKET ......................................................................................................................57
9.3 ADJUSTABLE MOUNTING BRACKET ...........................................................................................................57
9.4 AIR PURGE COLLAR....................................................................................................................................58
9.5 SIGHT TUBE.................................................................................................................................................58
9.6 PIPE THREAD ADAPTER..............................................................................................................................59
9.7 RIGHT ANGLE MIRROR...............................................................................................................................60
9.8 INDUSTRIAL POWER SUPPLY ......................................................................................................................61
9.9 TERMINAL BOX ...........................................................................................................................................62
9.10 LOW TEMP CABLE.....................................................................................................................................63
9.11 HIGH TEMP CABLE ...................................................................................................................................64
9.12 PROTECTIVE WINDOW..............................................................................................................................65
9.13 THERMOJACKET........................................................................................................................................66
9.14 {RESERVED}................................................................................................................................................66
9.15 {RESERVED}................................................................................................................................................66
10 PROGRAMMING GUIDE..........................................................................................................................67
10.1 SERIAL INTERFACE VERSUS CONTROL PANEL .........................................................................................67
10.2 STORING OF PARAMETERS........................................................................................................................67
10.3 COMMAND STRUCTURE............................................................................................................................67
10.3.1 Requesting a parameter (Poll Mode).................................................................................................67
10.3.2 Setting a parameter (Poll Mode) .......................................................................................................67
10.3.3 Sensor response .................................................................................................................................68
10.3.4 Sensor notification.............................................................................................................................68
10.3.5 Error Messages..................................................................................................................................68
10.4 TRANSFER MODES ....................................................................................................................................68
10.5 CHECKSUM................................................................................................................................................69
10.6 BURST MODE.............................................................................................................................................70
10.6.1 Speed .................................................................................................................................................70
10.6.2 Minimum Baud Rate.........................................................................................................................71
10.7 SENSOR INFORMATION.............................................................................................................................71
10.8 SENSOR SETUP...........................................................................................................................................72

10.8.1 General Settings ............................................................................................................................... 72
10.8.2 Sample Time ..................................................................................................................................... 72
10.8.3 Temperature Pre-Processing............................................................................................................. 72
10.8.4 Temperature Range........................................................................................................................... 74
10.8.5 Emissivity Setting ............................................................................................................................ 74
10.8.6 Ambient Background Temperature Compensation........................................................................... 74
10.8.7 Temperature Hold Functions............................................................................................................ 74
10.9 SENSOR CONTROL.................................................................................................................................... 75
10.9.1 Current Output ................................................................................................................................ 75
10.9.2 Relay Output .................................................................................................................................... 75
10.9.3 External Input .................................................................................................................................. 76
10.9.4 Lock Mode......................................................................................................................................... 76
10.10 RS485 COMMUNICATION ...................................................................................................................... 77
10.11 MULTIDROP MODE................................................................................................................................. 77
10.12 COMMAND LIST ..................................................................................................................................... 78
11 MAINTENANCE.......................................................................................................................................... 81
11.1 TROUBLESHOOTING MINOR PROBLEMS .................................................................................................. 81
11.2 FAIL-SAFE OPERATION ............................................................................................................................ 82
11.3 CLEANING THE LENS ............................................................................................................................... 83
12 APPENDIX..................................................................................................................................................... 84
12.1 DETERMINATION OF EMISSIVITY.............................................................................................................. 84
12.2 TYPICAL EMISSIVITY VALUES................................................................................................................... 84
13 NOTICES ....................................................................................................................................................... 88

Safety Instructions
10 Rev. D7 Jul 2017 Marathon MM
1Safety Instructions
This document contains important information, which should be kept at all times with the instrument
during its operational life. Other users of this instrument should be given these instructions with the
instrument. Eventual updates to this information must be added to the original document. The
instrument can only be operated by trained personnel in accordance with these instructions and local
safety regulations.
Acceptable Operation
This instrument is intended only for the measurement of temperature. The instrument is appropriate
for continuous use. The instrument operates reliably in demanding conditions, such as in high
environmental temperatures, as long as the documented technical specifications for all instrument
components are adhered to. Compliance with the operating instructions is necessary to ensure the
expected results.
Unacceptable Operation
The instrument should not be used for medical diagnosis.
Replacement Parts and Accessories
Use only original parts and accessories approved by the manufacturer. The use of other products can
compromise the operation safety and functionality of the instrument.

Safety Instructions
Marathon MM Rev. D7 Jul 2017 11
Safety Symbols
AC (Alternating Current)
DC (Direct Current)
Risk of danger. Important information. See manual.
Hazardous voltage. Risk of electrical shock.
Helpful information regarding the optimal use of the instrument.
Earth ground
Protective ground
Fuse
Normally-open (NO) relay
Normally-closed (NC) relay
Switch or relay contact
DC power supply
Conforms to European Union directive.
Disposal of old instruments should be handled according to professional and
environmental regulations as electronic waste.

Safety Instructions
12 Rev. D7 Jul 2017 Marathon MM
To prevent possible electrical shock, fire, or personal injury follow these guidelines:
Read all safety Information before you use the product.
Use the product only as specified, or the protection supplied by the product can be
compromised.
Carefully read all instructions.
Do not use and disable the product if it is damaged.
Do not use the product if it operates incorrectly.
Do not look directly into the laser with optical tools (for example, binoculars, telescopes,
microscopes). Optical tools can focus the laser and be dangerous to the eye.
Do not look into the laser. Do not point laser directly at persons or animals or indirectly off
reflective surfaces.
Do not use laser viewing glasses as laser protection glasses. Laser viewing glasses are used
only for better visibility of the laser in bright light.
Use the product only as specified or hazardous laser radiation exposure can occur.

Product Description
Marathon MM Rev. D7 Jul 2017 13
2Product Description
The Marathon MM is a multi-purpose, high performance single color infrared pyrometer with an
extensive feature set, rugged industrial housing and a high level of functionality. The sensor is available
in different spectral responses to accommodate the wide range of industrial applications requiring non-
contact temperature measurement. It is intended to be simple to operate, with a user-friendly interface
and well suited to a wide variety of industrial applications.
Each sensor has a rugged stainless steel housing, a rear membrane panel with backlit LCD display, and
a standard through the lens sighting with optional laser target sighting. Alternative to the laser sighting,
a video sighting is offered as an option. The Marathon MM is also available with remotely adjustable
precision focus optics. Users can easily adjust the focus of measurement targets, either by push-button
on the rear of the instrument, or remotely via the RS232/RS485 connection from a PC.
Each model operates as a temperature measurement subsystem consisting of optical elements, spectral
filters, detector, and digital electronics. All components are water-tight NEMA-4 (IP65, IEC529) rated
and are built to operate on a 100 percent duty cycle in industrial environments. Simultaneous analog
and digital outputs consist of standardized signals commonly available for use with computers,
controllers, recorders, alarms, or A/D interfaces.

Technical Data
14 Rev. D7 Jul 2017 Marathon MM
3Technical Data
3.1 Measurement Specifications
Temperature Range
LT -40 to 800°C (-40 to 1472°F)
G7 300 to 900°C (572 to 1652°F)
G5L 250 to 1650°C (482 to 3002°F)
G5H 450 to 2250°C (842 to 4082°F)
MT 250 to 1100°C (482 to 2012°F)
3M 100 to 600°C (212 to 1112°F)
2ML 300 to 1100°C (572 to 2012°F)
2MH 450 to 2250°C (842 to 4082°F)
1ML 400 to 1740°C (752 to 3164°F)
1MH 540 to 3000°C (1004 to 5432°F)
Measurements at the low end of the temperature range for the 1M models can be
effected by disturbing day light!
Spectral Response
LT 8 to 14 µm
G7 7.9 µm
G5 5 µm
MT 3.9 µm
3M 2.1 to 2.5 µm
2M 1.6 µm
1M 1 µm
Response Time (95%)
LT, MT, G7 120 ms
G5 60 ms
3M 20 ms
1M, 2M 2 ms
Exposure Time
1
(95%)
1M, 2M 1 ms
1
The exposure time is the minimum time during which the measured object must be present. The output value of the sensor
can be delayed. (VDI/VDE 3511)

Technical Data
Marathon MM Rev. D7 Jul 2017 15
System Accuracy
2
LT ± 1% of reading or ± 1°C for Tmeas > 0°C (32°F)
(whichever is greater)
MT ± 1% of reading for Tmeas > 350°C (662°F)
± 2°C or ± 2% for Tmeas < 350°C (662°F)
(whichever is greater)
G5L, G5H, G7 ± 1% of reading
3M ± 1% of reading for Tmeas > 150°C (302°F)
± 5°C for Tmeas < 150°C (302°F)
2ML ± (0.3% of reading + 2°C)
2MH ± (0.3% of reading + 1°C)
1ML ± (0.3% of reading + 1°C) for Tmeas > 450°C (842°F)
± (2% of reading + 2°C) for Tmeas < 450°C (842°F)
1MH ± (0.3% of reading + 1°C) for Tmeas > 650°C (1202°F)
± (2% of reading + 2°C) for Tmeas < 650°C (1202°F)
Repeatability
3
LT, MT, G5, 3M, G7 ± 0.5% of reading or ± 0.5°C, whichever is greater
2ML, 2MH ± (0.1% of reading + 1°C)
1ML ± (0.1% of reading + 1°C) for Tmeas > 450°C (842°F)
± (1% of reading + 1°C) for Tmeas < 450°C (842°F)
1MH ± (0.1% of reading + 1°C) for Tmeas > 650°C (1202°F)
± (1% of reading + 1°C) for Tmeas < 650°C (1202°F)
Temperature Resolution (mA output)
2MH, 1MH 0.2 K
all other models 0.1 K
Noise Equivalent Temperature (NETD)
LT 0.1 K at Tobj = 23°C (73°F), Tamb = 23°C (74°F)
3M 0.1 K at Tobj = 200°C (392°F), Tamb = 25°C (77°F)
MT, G5, G7 0.5 K at Tobj = 10% of full measurement range, Tamb = 25°C (77°F)
2M, 1M 0.5 K at Tobj = 10% of full measurement range, Tamb = 25°C (77°F)
Response time = Instrument Response time
Emissivity 0.100 to 1.150, in 0.001 increments
Signal Processing Peak hold, valley hold, averaging, advanced peak hold,
advanced valley hold, ambient background temperature
compensation
2
at 23°C ±5°C (73°F ±9°F), emissivity = 1.0, and time response 1.0 s
3
at 23°C ±5°C (73°F ±9°F)

Technical Data
16 Rev. D7 Jul 2017 Marathon MM
3.2 Optical Specifications
In all cases, make sure the target completely fills the measurement spot, see section 6.1.1 Distance to
Object, page 26.
The actual spot size for any distance, when the unit is at focus distance, can be calculated by using the
following formula. Divide the distance D by your model’s D:S number. For example, for a unit with D:S
= 300:1, if the sensor is 2200 mm (86 in.) from the target, divide 2200 by 300 (86 by 300), which gives you
a target spot size of approximately 7.3 mm (0.29 in.).
Figure 1: Spot Size Chart
All target spot sizes indicated in the optical diagrams are based on 90% energy.
3.2.1 Variable Focus
Model
Focus
Focus Range
Optical
Resolution D:S *
Smallest Spot Size
LT, MT, G5, 3M
VF1
200 mm (7.9 in.) to 2200 mm (86.6 in.)
70:1
2.9 mm @ 200 mm
(0.11 in. @ 7.9 in.)
G7
VF1
200 mm (7.9 in.) to 2200 mm (86.6 in.)
100:1
2 mm @ 200 mm
(0.08 in. @ 7.9 in.)
1ML, 2ML
VF1
300 mm (11.8 in.) to 2200 mm (86.6 in.)
160:1
1.9 mm @ 300 mm
(0.07 in. @ 11.8 in.)
1MH, 2MH
VF1
300 mm (11.8 in.) to 2200 mm (86.6 in.)
300:1
1 mm @ 300 mm
(0.04 in. @ 11.8 in.)
* Optical Resolution is achieved for each focal point in the focus range
Mean Time Between Failures (MTBF) 10,000 operations (at Tamb = 23°C/74°F)
D = Distance
S = Spot size

Technical Data
Marathon MM Rev. D7 Jul 2017 17
3.2.2 Fixed Focus
Optical Resolution D:S
LT, MT, G5, 3M 70:1
G7 100:1
Available Optics
LT, MT, G5, 3M, G7 SF1, SF2, SF3
LT, 3M CF1
The focus distance is measured from the front end of the sensor. For units with
Air/Water Cooled Housing you have to subtract 34.5 mm (1.358 in) from the focus
distance. This is very important especially for sensors with close focus optic!

Technical Data
18 Rev. D7 Jul 2017 Marathon MM
SF … Standard Focus, CF … Close Focus
* specified D:S ratio at focus point only
Table 1: Optical Diagrams for D:S = 70:1

Technical Data
Marathon MM Rev. D7 Jul 2017 19
SF … Standard Focus, CF … Close Focus
* D:S = 100:1 at focus point
Table 3: Optical Diagrams for D:S = 100:1

Technical Data
20 Rev. D7 Jul 2017 Marathon MM
SF … Standard Focus, CF … Close Focus
* D:S = 160:1 at focus point
Table 2: Optical Diagrams for D:S = 160:1