Fluke endurance series User manual

Endurance® Series
Innovative High Temperature Fiber Optic Infrared Pyrometers
Users Manual
PN 59517
July 2017, Rev. E1, 07/2017
© 2017 Fluke Process Instruments, All rights reserved. Printed in Germany. Specifications subject to change without notice.
All product names are trademarks of their respective companies.

Warranty
The manufacturer warrants this instrument to be free from defects in material and workmanship
under normal use and service for the period of four 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
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)
EN 60825-1:2015-07 Safety of laser products –
Part 1: Equipment classification and requirements
Contacts
Fluke Process Instruments
Fluke Process Instruments North America
Santa Cruz, CA USA
Tel: [phone] (USA and Canada, only)
[phone]
[e-mail]
Fluke Process Instruments Europe
Berlin, Germany
Tel: [phone]
[e-mail]
Fluke Process Instruments 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 or e-mail
[e-mail]
www.flukeprocessinstruments.com
© Fluke Process Instruments
Specifications subject to change without notice.
The device complies with the requirements of the European Directives.
EC –Directive 2014/30/EU -- EMC
EC –Directive 2011/65/EU -- RoHS II
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.

i
Table of Contents
Title Page
1. Safety Instructions.................................................................................... 1
2. Product Description.................................................................................. 3
2.1. Theory of Operation for Ratio (2-Color) Sensors.......................................... 5
2.1.1. Partially Obscured Targets ...................................................................... 5
2.1.2. Targets Smaller Than Field of View......................................................... 5
2.1.3. Emissivity and 1-Color (single wavelength) measurements .................... 5
2.1.4. Slope (2-Color ratio) measurements........................................................ 6
3. Technical Data........................................................................................... 7
3.1. General Specifications.................................................................................. 7
3.2. Electrical Specifications................................................................................ 8
3.3. Measurement Specifications ........................................................................ 9
3.4. Optical Specifications................................................................................... 10
3.4.1. Measurement spot size regarding the selected focus and model options11
3.5. Dimensions................................................................................................... 18
3.6. Scope of Delivery ......................................................................................... 19
4. Sensor Location........................................................................................ 19
4.1. Ambient Temperature................................................................................... 19
4.2. Atmospheric Quality ..................................................................................... 19
4.3. Electrical Interference................................................................................... 19
4.4. Distance to Object........................................................................................ 20
4.5. Sensor Placement (1-Color Mode)............................................................... 20
4.6. Sensor Placement (2-Color Mode)............................................................... 21
4.7. Viewing Angles............................................................................................. 22
5. Installation ................................................................................................. 23
5.1. Mounting the Sensor .................................................................................... 23
5.2. Mounting the Sensor Head of Laser sighting devices.................................. 24
5.3. Aiming and Focusing.................................................................................... 25
5.4. Fiber Optic Cable.......................................................................................... 26
5.5. Electrical Installation of the Electronics Housing.......................................... 27
5.5.1. Standard (1) electronics housing variant with M16 and M12 connector.. 27
5.5.2. Standard (2) electronics housing variant with cable gland / grommet ..... 29
5.5.3. Accessory Cables and Terminal Block .................................................... 30
5.5.4. Power Supply........................................................................................... 31
5.5.5. Computer Interfacing via RS485 link....................................................... 32
5.5.6. Addressing the Endurance®sensor in a RS485 Multidrop Network ........ 33
6. Device Control........................................................................................... 34
6.1. Control Panel................................................................................................ 34
6.1.1. The Object / Target Temperature Display (green 7-segment LED type). 35
6.1.2. The Screen / Menu Display ..................................................................... 35
6.1.3. The LASER Sighting Indicator LED (red) ................................................ 35
6.1.4. The Status Indicator LED (green)............................................................ 35
6.1.5. The 4 Control Panel Pushbuttons............................................................ 35
6.2. The control panel menu structure and their associated entries.................... 36
6.2.1. The INFORMATION MENU..................................................................... 38
6.2.2. The CONFIGURATION MENU................................................................ 40
6.2.3. The UNIT SETUP MENU......................................................................... 42

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6.2.4. The INTERFACE MENU.......................................................................... 45
6.2.5. The ANALOG MENU............................................................................... 47
7. Signal Processing ..................................................................................... 48
7.1. Averaging ..................................................................................................... 48
7.2. Peak Hold..................................................................................................... 48
7.2.1. Reset Peak Hold by Peak Hold Time expiration...................................... 48
7.2.2. Reset Peak Hold by external Trigger signal ............................................ 49
7.2.3. Signal Slope (decay) in case of Peak Hold Reset ................................... 50
7.3. Advanced Peak Hold.................................................................................... 51
7.4. Valley Hold ................................................................................................... 51
7.5. Advanced Valley Hold .................................................................................. 52
7.6. Setpoint ........................................................................................................ 52
7.7. Deadband..................................................................................................... 52
7.8. Air Purge Collar............................................................................................ 53
7.9. Protection Tube............................................................................................ 53
7.10. Fitting System............................................................................................... 54
7.11. Outputs......................................................................................................... 55
7.11.1. Analog Output (current loop) ................................................................... 55
7.11.2. Relay Outputs.......................................................................................... 55
7.11.3. Trigger ..................................................................................................... 55
7.12. Factory Defaults ........................................................................................... 56
8. Device Options.......................................................................................... 58
8.1. Focus (3 focus options available)................................................................. 58
8.2. Laser Sighting (Sighting Option L)................................................................ 58
8.3. PROFINET IO (Communication Option 1).................................................... 59
8.3.1. Description............................................................................................... 59
8.3.2. I/O Device Configuration.......................................................................... 59
8.3.3. Parameter Setting.................................................................................... 60
8.3.4. Structure of the input/output data ............................................................ 61
8.3.5. Diagnostics.............................................................................................. 61
8.4. Ethernet/IP (Communication Option 2)......................................................... 62
8.4.1. Description............................................................................................... 62
8.4.2. I/O Device Configuration.......................................................................... 62
8.4.3. Parameter Setting.................................................................................... 63
8.4.4. Structure of the input/output data ............................................................ 63
8.4.5. Diagnostics.............................................................................................. 63
8.5. ISO Calibration Certificate, based on DAkkS (German accreditation body). 63
9. Accessories............................................................................................... 64
9.1. Electrical Accessories................................................................................... 64
9.1.1. High Temp. Multi-conductor cable with M16 connector (E-2CCBxx)....... 65
9.1.2. Low Temp. Multi-conductor cable with M16 connector (E-2CLTCBxx) ... 66
9.1.3. High Temp. Ethernet cable with M12 connector (E-ETHCBxx)............... 67
9.1.4. Low Temp. Ethernet cable with M12 connector (E-ETHLTCBxx)............ 67
9.1.5. Endurance®Terminal Block Accessory (E-TB)........................................ 68
9.1.6. Endurance®Terminal Block in a NEMA 4 enclosure (E-TBN4)............... 68
9.1.7. 24VDC, 1.2A industrial power supply, DIN rail mount (E-SYSPS) .......... 69
9.1.8. 24VDC, 1.1A, 100-240VAC power supply in NEMA 4/IP65 case (E-PS) 70
9.1.9. PoE Injector to provide power over a single Ethernet hub (E-POE)........ 71
9.1.10. 12-socket DIN Cable connector (E-2CCON) for multi-conductor cable... 72
9.1.11. USB to RS232/422/485 converter (E-USB485)....................................... 72
9.2. Accessories for Fiber Optic Sensors only..................................................... 73
9.3. Air Purge Collar............................................................................................ 73
9.4. Protection Tube............................................................................................ 73
9.5. Fitting System............................................................................................... 74

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10. Programming Guide.................................................................................. 75
10.1. Remote versus Manual Considerations........................................................ 75
10.2. Command Structure ..................................................................................... 75
10.3. Transfer Modes ............................................................................................ 76
10.3.1. Poll Mode................................................................................................. 76
10.3.2. Burst Mode .............................................................................................. 76
10.4. Command List .............................................................................................. 77
10.5. Command Examples.................................................................................... 80
11. Maintenance............................................................................................... 81
11.1. Troubleshooting Minor Problems.................................................................. 81
11.2. Fail-Safe Operation ...................................................................................... 81
11.2.1. Fail-Safe Error Codes (displayed or transmitted via electrical interfaces)81
11.2.2. Analog Output current values in dependence of Fail-Safe Error Codes.. 82
11.3. Cleaning the Lens......................................................................................... 83
11.4. Replacing the Fiber Optic Cable................................................................... 84
11.4.1. Removing the Fiber Optic Cable.............................................................. 84
11.4.2. Mounting the Fiber Optic Cable............................................................... 86
11.4.3. Fiber Calibration ...................................................................................... 87
12. Addendum.................................................................................................. 88
12.1. Determination of Slope (for 2 –color operation)........................................... 88
12.2. Percentage of allowed signal reduction........................................................ 88
12.3. Determination of Emissivity (for 1-Color operation)...................................... 89
12.4. Typical Emissivity Values............................................................................. 89

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List of Tables
Title Page
Table 1: General Symbols 2
Table 2: Fiber optic head models and their assigned sensor spectral range 3
Table 3: Dimensions of available sensor heads 18
Table 4: Factory Defaults 56
Table 5: Electrical Accessories 64
Table 6: Command List 77
Table 7: Assignment of Error-Codes 79
Table 8: Command Examples 80
Table 9: Troubleshooting 81
Table 10: Error Codes in 1-Color Mode 81
Table 11: Fail-safe Error Codes 82
Table 12: Current Output Values in accordance to an Error 82
Table 13: Typical Emissivity Values (Metals) 90
Table 14: Typical Emissivity Values (Non-Metals) 90

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List of Figures
Title Page
Figure 1: Identification matrix for Endurance®fiber optic infrared pyrometers............ 4
Figure 2: Example of Spot size propagation for a F2 (Standard Focus) option model
............................................................................................................................. 11
Figure 3: Spot size charts for Endurance®with external optical sensor head........... 17
Figure 4: Dimensions of the Endurance®Electronics Housing ................................. 18
Figure 5: Dimensions of the adjustable mounting bracket........................................ 18
Figure 6: Proper Sensor Placement in 1-Color Mode............................................... 20
Figure 7: Sensor Placement in 2-Color Mode........................................................... 21
Figure 8: Acceptable Sensor Viewing Angles ........................................................... 22
Figure 9: Connecting the Fiber Optic Cable.............................................................. 23
Figure 10: Mounting the Fiber Optic Cable for Laser sighting devices ..................... 24
Figure 11: Caution / Attention hint for devices with ordered LASER sighting option 25
Figure 12: Schematic diagram of the target and measurement spot ........................ 26
Figure 13: Standard electronics housing with M16 and M12 connector on left side. 27
Figure 14: M16 connector, the corresponding socket and the wire coding table...... 28
Figure 15: M12 Socket (left) and the corresponding cable plug (right) ..................... 28
Figure 16: Ethernet Cable with M12 Plug and RJ45 Connector ............................... 29
Figure 17: Internal signal assignment of the cable gland/grommet variant............... 29
Figure 18: M16 12-Conductor shielded cable with colored wire/signal assignments 30
Figure 19: M12 4-Conductor shielded cable with RJ45 on counter side................... 31
Figure 20: Endurance®series labeled terminal block ............................................... 31
Figure 21: USB/RS485 Converter (E-USB485) ........................................................ 32
Figure 22: Control Panel........................................................................................... 34
Figure 23: Upper Object/Target Temperature Display.............................................. 35
Figure 24: Lower Screen / Menu Display.................................................................. 35
Figure 25: Upper LASER Sighting Activation LED (red) ........................................... 35
Figure 26: Lower Status Indicator LED (green)......................................................... 35
Figure 27: Overview about the menu structure with five (5) sub-menus................... 37
Figure 28: The INFORMATION MENU with sensor type related variations.............. 38
Figure 29: The CONFIGURATION MENU with sensor type related variations......... 40
Figure 30: The UNIT SETUP MENU with sensor type related variations ................. 42
Figure 31: The static (fixed) INTERFACE MENU ..................................................... 45
Figure 32: The static (fixed) ANALOG MENU........................................................... 47
Figure 33: Averaging................................................................................................. 48
Figure 34: Peak Hold reset by Peak Hold Time expiration ....................................... 49
Figure 35: Peak Hold reset by external Trigger signal.............................................. 49
Figure 36: Perpendicular Signal Drop (default mode)............................................... 50
Figure 37: Linear Signal Drop (decay mode) ............................................................ 50
Figure 38: Average Time Dependent Signal Drop (averaging mode)....................... 51
Figure 39: Advanced Peak Hold ............................................................................... 51
Figure 40: Valley Hold............................................................................................... 52
Figure 41: Deadband Example ................................................................................. 55
Figure 42: LASER Sighting Indication....................................................................... 58
Figure 43: High Temp. Multi-Conductor Cable with M16 Connector (E-2CCBxx) .... 65
Figure 44: Low Temp. Multi-Conductor Cable with M16 Connector (E-2CLTCBxx). 66
Figure 45: High Temp. Ethernet Cable with M12, RJ45 Connector (E-ETHCBxx)... 67
Figure 46: Low Temp. Ethernet Cable with M12, RJ45 Connector (E-ETHLTCBxx) 67
Figure 47: Endurance®Terminal Block (E-TB) with wire color assignment .............. 68
Figure 48: Endurance®Terminal Block in a NEMA 4 Enclosure (E-TBN4)............... 68
Figure 49: 24VDC, 1.2A Industrial Power Supply (E-SYSPS).................................. 69
Figure 50: 24VDC, 1.1A, 100-240VAC power supply in NEMA 4/IP65 case (E-PS) 70
Figure 51: PoE Injector to provides power over a single Ethernet hub (E-POE) ...... 71

viii
Figure 52: 12-socket DIN Cable connector (E-2CCON) for multi-conductor cable... 72
Figure 53: USB to RS232/422/485 converter (E-USB485)....................................... 72
Figure 54: Accessories (Selection) ........................................................................... 73
Figure 55: Air Purge Collar and Protection Tube (E-FOHAPA) ................................ 73
Figure 56: Protection Tube for Optical Head............................................................. 74
Figure 57: Flexible Fitting System............................................................................. 74
Figure 58: Dimension for 4-Bolt Mounting Flange..................................................... 74
Figure 59: Removing the Fiber optic Cable from the Optical Head........................... 85
Figure 60: Removing the Fiber optic Cable from the Electronics Housing................ 85
Figure 61: Attaching the Fiber optic Cable to the Optical Head................................ 86
Figure 62: Attaching the Fiber Optic Cable to the Electronics Housing .................... 87
Figure 63: Model L Percentage of Allowed Signal Reduction................................... 88
Figure 64: Model H Percentage of Allowed Signal Reduction .................................. 89

Innovative High Temperature Fiber Optic Infrared Pyrometers
Safety Instructions
1
1. Safety 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.
Instrument Disposal
Disposal of old instruments should be handled according to professional and
environmental regulations as electronic waste.
Operating Instructions
The following symbols are used to highlight essential safety information in the operation
instructions:
Helpful information regarding the optimal use of the instrument.
Warnings concerning operation to avoid instrument damage and personal injury.
The instrument can be equipped with a Class 2 laser. Class 2 lasers shine only
within the visible spectrum at an intensity of 1 mW. Looking directly into the laser
beam can produce a slight, temporary blinding effect, but does not result in physical
injury or damage to the eyes, even when the beam is magnified by optical aids. At
any rate, closing the eye lids is encouraged when eye contact is made with the laser
beam. Pay attention to possible reflections of the laser beam. The laser functions
only to locate and mark surface measurement targets. Do not aim the laser at
people or animals.
Pay particular attention to the following safety instructions.
Use in 115/230 V~ electrical systems can result in electrical hazards and personal
injury, if not properly protected. All instrument parts supplied by electricity must be
covered to prevent physical contact and other hazards at all times.

Endurance® Series
Users Manual
2
Table 1: General Symbols
Symbol
Definition
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.

Innovative High Temperature Fiber Optic Infrared Pyrometers
Product Description
3
2. Product Description
These Endurance®series pyrometers with an external, via fiber optic cable, attached sensor
head are infrared noncontact temperature measurement systems. Such devices have a fixed
focus, a laser beam pointing capability through the lens to the target, and different fiber optic
cable types for specific wavelength infrared temperature measurements. The Endurance®
devices come in an industrial aluminum die-cast electronics enclosure. A ruggedized fiber
optic cable for the external sensor head attachment to the electronics enclosure is protected
by a flexible stainless steel sheath. The external attached sensor head on the one hand and
the electronics enclosure on the other hand, allow the installation of the electronics enclosure
away from a hot, hostile environment. They are energy transducers, designed to measure
accurately and repeatedly the amount of heat energy emitted from an object, and then
convert that energy into a measurable electrical signal. Each model operates as an integrated
temperature measurement subsystem consisting of optical elements, spectral filters,
detectors, digital electronics and an IP65 (NEMA-4) rated housing. Each is built to operate on
a 100 percent duty cycle in industrial environments. Various output types are offered for easy
integration into industrial monitoring and control environments.
Endurance®series pyrometers are available for different kind of temperature measurement
applications and are separated into the following variants:
Table 2: Fiber optic head models and their assigned sensor spectral range
Model
Description
EF1ML, EF1MM, EF1MH
-Monochrome (1-Color)-
1-C-sensor in spectral range of 1.0 µm for different
temperature ranges
EF2ML, EF2MH
-Monochrome (1-Color)-
1-C-sensor in spectral range of 1.6 µm for different
temperature ranges
EF1RL, EF1RM, EF1RH
-Ratio (2-Color)-
2-C-sensor in spectral range of 1.0 µm (nominal) for
different temperature ranges
EF2RL, EF2RH
-Ratio (2-Color)-
2-C-sensor in spectral range of 1.6 µm (nominal) for
different temperature ranges
Monochrome (1-Color mode) types for standard temperature measurement applications
The 1-Color mode is best for measuring the temperature of targets in areas where no sighting
obstructions, either solid or gaseous, exist. Such 1-Color mode is also best where the target
completely fills the measurement spot.
Ratio (2-Color mode) types for specific temperature measurement applications
Such pyrometers determine the object temperature by the ratio of two separate and overlapping
infrared bands. The 2-Color mode is best for measuring the temperature of targets that are
partially obscured, either intermittently or permanently by other objects, openings, screens, or
viewing windows that reduce energy, and by dirt, smoke, or steam in the atmosphere. Possible
emissivity alterations should affect both detector wavelengths in an identical manner.
Unfortunately is such identical influence on both detectors in general use not verifiable.
The 2-Color mode can also be used on targets that do not completely fill the measurement spot,
provided the background is much cooler than the target. Ratio pyrometer types are able to
measure and determine the object temperature in either one of both modes (1-Color / 2-Color),
in which always 2 infrared detectors are active.

Endurance® Series
Users Manual
4
Figure 1: Identification matrix for Endurance®fiber optic infrared pyrometers
Y
L H 6
Y
B 3
X
1 0 2
X
0 1 2
---
X
0 1 2
---
X
0 1
---
X
0 1
---
X
0 1 2
Y
F F F
---
Y
L M H
Y
M R
X
1 2
F
F
E
E
Fixed defined "E" for Endurance® series devices
High Temperature Range
→→→
Bundle - Fiber optic cable type (contains numerous fibers in one bundle)
Low temperature fiber optic cable type for ambient temperatures up to 315°C (stainless steel armored, no protection sleeve)
Laser sighting option, to point through the lens to the measurement spot
No sighting capability integrated
Fixed defined "F" for Endurance® series devices with fiber optical attached sensor head
Infrared sensor wavelength = 1.6µm
Infrared sensor wavelength = 1µm
R = Ratio (2-color) pyrometer type
M = Monochrome (single color) pyrometer type
Medium Temperature Range
Low Temperature Range
Standard fixed focus, optical head focused at infinity (∞)
Close fixed focus, optical head focused at 300mm (12")
Close fixed focus, optical head focused at 100mm (4")
Fiber Cable Length in meter (decade pos.)
Fiber Cable Length in meter (unit pos.)
Fiber Type Identifier (B=Bundle)
FOC Temp. Range
Unique Endurance® Fiber Optic Device Identifier
Model Identification Matrix For Endurance®-Series Devices With Fiber Optical Attached Sensor Head By Defined Numbering Tree
X= Number Y = Capital
Low temperature fiber optic cable type for ambient temperatures up to 200°C (stainless steel armored with PTFE protection sleeve)
Designated fiber optic cable length (01 = 1m, 03 = 3m, 06 = 6m)
Designated fiber optic cable length (10 = 10m)
Designated fiber optic cable length (22 = 22m)
M16 Connection, to connect a standard M16-cable (12 wires) with M16-Connector to the Electronics Box
Electronics Box with sealed cable gland for cable feed-through, to connect to the inside terminal connection
Communication Interface
EtherNet/IP (EtherNet Industrial Protocol) communication protocol stack and installed M12 fieldbus connector
Electronics Enclosure Configuration
Sighting Identifier (0, 1)
Focus Identifier (0, 1, 2)
Focus Distance (F)
PROFINET communication protocol stack and installed M12 fieldbus connector
Ethernet communication protocol stack and installed M12 fieldbus connector, built-in HTTP-Server (ASCII, MJPEG-Video 720p, Web)
Temperature Range (L, M, H)
Pyrometer Type (M = monochrome, R = ratio)
Infrared sensor wavelength (1, 2 ~ 1µm, 1.6µm)
Unique Endurance® Identifier

Innovative High Temperature Fiber Optic Infrared Pyrometers
Product Description
5
2.1. Theory of Operation for Ratio (2-Color) Sensors
The 2-Color ratio technology allows accurate and repeatable temperature measurements,
which don’t depend on absolute radiated energy values. In use, a 2-Color sensor determines
temperature from the ratio of the radiated energies in two separate wavelength bands (colors).
The benefits of 2-Color sensors are that accurate measurements can be made under the
following conditions:
When the field of view to the target is partially blocked or obscured.
When the target is smaller than the sensor’s field of view.
When the target emissivity is low or changing by the same factor in both wavelength
bands.
Another benefit is that 2-Color sensors measure closer to the highest temperature within the
measured spot (spatial peak picking) instead of an average temperature. A 2-Color sensor can
be mounted farther away, even if the target does not fill the resulting spot size. The convenience
is that you are not forced to install the sensor at some specific distance based upon target size
and the sensor’s optical resolution.
2.1.1. Partially Obscured Targets
The radiated energy from a target is, in most cases, equally reduced when objects or
atmospheric materials block some portion of the optical field of view. It follows that the ratio of
the energies is unaffected, and thus the measured temperatures remain accurate. A 2-Color
sensor is better than a 1-Color sensor in the following conditions:
Sighting paths are partially blocked (either intermittently or permanently).
Dirt, smoke, or steam is in the atmosphere between the sensor and target.
Measurements are made through items or areas that reduce emitted energy, such as
grills, screens, small openings, or channels.
Measurements are made through a viewing window that has unpredictable and
changing infrared transmission due to accumulating dirt and/or moisture on the window
surface.
The sensor itself is subject to dirt and/or moisture accumulating on the lens surface.
1-Color sensors see polluted atmosphere and dirty windows and lenses as
a reduction in energy and give much lower than actual temperature
readings!
2.1.2. Targets Smaller Than Field of View
When a target is not large enough to fill the field of view, or if the target is moving within the
field of view, radiated energies are equally reduced, but the ratio of the energies is unaffected
and measured temperatures remain accurate. This remains true as long as the background
temperature is much lower than the target’s. The following examples show where 2-Color
sensors can be used when targets are smaller than the field of view:
Measuring wire or rod —often too narrow for field of view or moving or vibrating
unpredictably. It is much easier to obtain accurate results because sighting is less
critical with two-color sensors.
Measuring molten glass streams —often narrow and difficult to sight consistently with
single-wavelength sensors.
2.1.3. Emissivity and 1-Color (single wavelength) measurements
Emissivity is a calculated ratio of infrared energy emitted by an object to the energy emitted by
a blackbody at the same temperature (a perfect radiator has an emissivity of 1.00). The
emissivity is preset at 1.00. For information on determining an unknown emissivity, and for
sample emissivities, refer to the appendix of this manual.

Endurance® Series
Users Manual
6
When target emissivity is uncertain or changing, a 2-Color sensor can be more accurate than
a 1-Color instrument as long as the emissivity changes by the same factor in both wavelength
bands. Accurate measurement results are dependent on the application and the type of
material being measured. The emissivity of all real objects changes with wavelength and
temperature, at varying degrees, depending on the material. To determine how to use 2-Color
sensors with your application when uncertain or changing emissivities are a factor, please
contact our sales representative or technical support department.
2.1.4. Slope (2-Color ratio) measurements
The slope is the quotient of the emissivities based on the narrow and the wide spectral range
(first and second wavelength). The factory default preset slope is 1.000.
For information on determining an unknown slope, and for sample slopes, refer to the appendix
of this manual.
The slope is the important parameter for measurements in 2-Color mode!
The emissivity affects only measurements in 1-Color mode.
Experts figured out, that extreme dirt (dust, fingerprints) on the optical lens
or vision window influences the Endurance®2-Color measurement chain.
Unpredictable temperature readings may result in such a case!

Innovative High Temperature Fiber Optic Infrared Pyrometers
Technical Data
7
3. Technical Data
3.1. General Specifications
General Specifications
Device Model
Parameter
EF1ML, EF1MM, EF1MH,
EF2ML, EF2MH,
EF1RL, EF1RM, EF1RH,
EF2RL, EF2RH
Environmental Rating for Housing
NEMA-4 (IEC 529, IP 65)
Ambient Temperature
Head / Fiber Cable
Electronics Housing w/o cooling plate
Electronics Housing with cooling plate
0 - 200°C (32 - 392°F)
0 - 60°C (32 - 140°F)
0 - 150°C (32 - 302°F)
Storage Temperature
Electronics Housing
-20 to 70°C (-4 to 158°F)
Fiber Cable
Standard Type
High Temperature Type
Rated to 200°C (360°F), NEMA-4 (IP65),
stainless steel armour, PTFE coated sleeve
Rated to 315°C (600°F), stainless steel armour,
no coated sleeve, see Device Options
Relative Humidity
10 to 95%
Electromagnetic Compatibility (EMC)
EN 61326-1:2013
Safety
EN 60825-1:2015-07
FDA laser safety compliant
Mechanical Shock
Electronics Housing
IEC 68-2-27 (5 G, 11 msec duration, 3 axes)
Vibrations
Electronics Housing
IEC 68-2-6 (2 G, 10 to 150 Hz, 3 axes)
Warm up Period
15 minutes
Weight
Optical Head
Electronics Housing
~100g (3.53 oz)
~710g (25.0 oz)
Housing Material
Optical Head
Electronics Housing
Stainless Steel
Aluminum diecast

Endurance® Series
Users Manual
8
3.2. Electrical Specifications
Electrical Specifications
Device Model
Parameter
EF1ML, EF1MM, EF1MH,
EF2ML, EF2MH,
EF1RL, EF1RM, EF1RH,
EF2RL, EF2RH
Power Supply
20 to 48 VDC allowed, max. 12W
Power over Ethernet (IEEE 802.3af)
Digital Input (External Trigger / Hold)
Galvanically isolated TTL input signal (digital active low)
To trigger:
- Average-, Peak-, Valley Hold function
- Restart of signal postprocessing
- Switching the optional LASER sighting on/off
Digital Output (Relay / Alarm Output)
Galvanically isolated digital output of a potential-free solid state relay contact.
The max. relay contact load is limited to 48 V, 300 mA. The relay contact
behavior is settable via the user interface or a serial command to operate as
following:
- NO = Normally Open
- NC = Normally Close
- PO = Permanently Open
- PC = Permanently Close
Analog Input (0/4 –20mA current loop input)
Galvanically isolated analog input signal, to read in the current (0/4 –20mA),
given by an external device like PLC, Computer or any kind of process control
device. The internal loop resistor per pyrometer is about 220Ω.
Via a controlled current from an external device you are able to set/correct:
- Verification of preset current values, given by external devices
- Set emissivity (1-Color or 2-Color mode)
- Set slope (2-Color devices only)
- Set background temperature for background compensation
Analog Output (current loop, 0/4 –20mA)
Galvanically isolated analog output signal, to stimulate output currents in the
range (0/4 - 20 mA). The output signal is an active output with 16 Bit
resolution, to drive a maximum resistive load of 500Ω. Just the acquired
object temperature, measured by either 1C or 2C devices, displayed on on
the Endurance® control panel, is converted to a 16 bit current equivalent. The
user has to define the temperature measurement range and must assign the
lower and upper range limits to the current equivalent (0 –20mA / 4 –20mA).
RS485 Serial Communication Interface (4-/2-wire full/half duplex transmission)
Galvanically isolated 4- or 2-wire RS485 communication interface. The
ordered 'Electronics Enclosure Configuration' option (M16-connector/Cable
gland) determines the 4-/2-wire capability.
- Data format: 8 bit, no parity, 1 stop bit
- Data rate (Bit/s): 1200, 2400, 9600, 19200, 38400, 57600, 115200
- Default data rate (factory setup): 38400 Bit/s
Digital Network Communication Interface
Galvanically isolated 4-wire network communication interface:
- Full duplex, 100 Mbit (100Base-TX / IEEE 802.3u)
- Power over Ethernet (PoE) capability, referred to PoE
standard IEEE 802.3af, mode A, 10/100 Mbit, mixed DC & data
- TCP/IP, UDP, HTTP, Webserver, MJPEG-Video
- Additional communication options (protocol stacks) orderable