Fluke Endurance 1RL, Endurance 1RH Operating Instructions Manual

Endurance™ 1R

2-Color Infrared Thermometer

Operating Instructions

Rev. E1 Sep 2015

59511

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Contacts

Fluke Process Instruments

Fluke Process Instruments North America
Santa Cruz, CA USA
Tel: [phone] (USA and Canada, only)
[phone]

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Fluke Process Instruments Europe
Berlin, Germany
Tel: [phone]

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Fluke Process Instruments China
Beijing, China
Tel: [phone]

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Worldwide Service

Fluke Process Instruments offers services, including repair and
calibration. For more information, contact your local office or e-mail
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www.flukeprocessinstruments.com

© Fluke Process Instruments
Specifications subject to change without notice.

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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.

The device complies with the requirements of the European Directives.

EC – Directive 2004/108/EC (EMC)

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.

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TABLE OF CONTENTS

1 SAFETY INSTRUCTIONS ............................................................................................................................. 7

2 PRODUCT DESCRIPTION ............................................................................................................................ 9

2.1 THEORY OF OPERATION FOR 2-COLOR SENSORS ...................................................................................... 10

2.1.1 Partially Obscured Targets ................................................................................................................. 10

2.1.2 Targets Smaller Than Field of View ................................................................................................... 10

2.1.3 Emissivity and 1-color (single wavelength) measurements ................................................................ 11

2.1.4 Slope (2-color ratio) measurements .................................................................................................... 11

3 TECHNICAL DATA ...................................................................................................................................... 12

3.1 MEASUREMENT SPECIFICATIONS ............................................................................................................... 12

3.2 GENERAL SPECIFICATIONS ......................................................................................................................... 13

3.3 ELECTRICAL SPECIFICATIONS .................................................................................................................... 14

3.4 DIMENSIONS ............................................................................................................................................... 15

3.5 OPTICAL SPECIFICATIONS .......................................................................................................................... 16

3.6 SCOPE OF DELIVERY ................................................................................................................................... 17

4 ENVIRONMENT............................................................................................................................................ 18

4.1 AMBIENT TEMPERATURE ........................................................................................................................... 18

4.2 ATMOSPHERIC QUALITY ............................................................................................................................ 18

4.3 ELECTRICAL INTERFERENCE ...................................................................................................................... 18

5 INSTALLATION ............................................................................................................................................ 19

5.1 MECHANICAL INSTALLATION ................................................................................................................... 19

5.1.1 Distance to Object .............................................................................................................................. 19

5.1.2 Sensor Placement (1-Color Mode) ...................................................................................................... 19

5.1.3 Sensor Placement (2-Color Mode) ...................................................................................................... 20

5.1.4 Viewing Angles................................................................................................................................... 21

5.1.5 Aiming and Focusing ......................................................................................................................... 22

5.2 ELECTRICAL INSTALLATION ...................................................................................................................... 23

5.2.1 M16 12-Pin DIN Connector .............................................................................................................. 23

5.2.2 M12 4-Socket LAN/Ethernet Connector ............................................................................................ 24

5.2.3 Accessory Cables and Terminal Block ................................................................................................ 25

5.2.4 Power Supply ...................................................................................................................................... 27

5.2.5 Computer Interfacing via RS485 link ................................................................................................. 27

5.2.6 Addressing the Endurance sensor in a RS485 Multidrop Network ................................................... 28

6 OPERATION ................................................................................................................................................... 29

6.1 CONTROL PANEL ....................................................................................................................................... 29

6.1.1 The Temperature Display (green 7-segment LED type) ..................................................................... 30

6.1.2 The Screen / Menu Display ................................................................................................................ 30

6.1.3 The Pointing Device Indicator LED (red) .......................................................................................... 30

6.1.4 The Status Indicator LED (green) ...................................................................................................... 30

6.1.5 The four control elements (pushbuttons) of the control panel ............................................................ 31

6.2 THE SELECTABLE SUBMENUS AND ASSOCIATED ENTRIES .......................................................................... 32

6.2.1 The INFORMATION MENU ........................................................................................................... 32

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6.2.2 The CONFIGURATION MENU ....................................................................................................... 32

6.2.3 The UNIT SETUP MENU ................................................................................................................. 33

6.2.4 The INTERFACE MENU .................................................................................................................. 33

6.2.5 The ANALOG MENU ....................................................................................................................... 33

6.3 TOTAL CONTROL PANEL (USER INTERFACE) STRUCTURE ........................................................................ 34

7 SIGNAL POST PROCESSING DETAILS .................................................................................................. 35

7.1 AVERAGING ................................................................................................................................................ 35

7.2 PEAK HOLD................................................................................................................................................. 35

7.3 VALLEY HOLD ............................................................................................................................................ 36

7.4 SETPOINT ..................................................................................................................................................... 37

7.5 DEADBAND ................................................................................................................................................. 37

7.6 OUTPUTS ..................................................................................................................................................... 38

7.6.1 Analog Output (current loop) ............................................................................................................. 38

7.6.2 Relay Outputs ..................................................................................................................................... 38

7.6.3 Trigger ................................................................................................................................................. 38

7.7 FACTORY DEFAULTS ................................................................................................................................... 39

8 OPTIONS ......................................................................................................................................................... 40

8.1 LASER SIGHTING ......................................................................................................................................... 40

8.2 LED SIGHTING ............................................................................................................................................ 41

8.3 VIDEO SIGHTING ......................................................................................................................................... 41

8.4 AIR/WATER COOLED HOUSING ................................................................................................................. 41

8.4.1 Avoidance of Condensation ................................................................................................................. 43

9 ACCESSORIES ................................................................................................................................................ 44

9.1 OVERVIEW ................................................................................................................................................... 44

9.2 FIXED MOUNTING BRACKET ...................................................................................................................... 45

9.3 AIR PURGE COLLAR .................................................................................................................................... 45

9.4 POLARIZING FILTER END CAP .................................................................................................................... 46

9.5 CABLES ........................................................................................................................................................ 47

9.6 INDUSTRIAL POWER SUPPLY ...................................................................................................................... 48

10 PROGRAMMING GUIDE .......................................................................................................................... 49

10.1 REMOTE VERSUS MANUAL CONSIDERATIONS ......................................................................................... 49

10.2 COMMAND STRUCTURE ............................................................................................................................ 49

10.3 TRANSFER MODES .................................................................................................................................... 50

10.3.1 Poll Mode .......................................................................................................................................... 50

10.3.2 Burst Mode ........................................................................................................................................ 50

10.4 COMMAND LIST ........................................................................................................................................ 51

10.5 COMMAND EXAMPLES ............................................................................................................................. 53

11 MAINTENANCE .......................................................................................................................................... 55

11.1 TROUBLESHOOTING MINOR PROBLEMS ................................................................................................... 55

11.2 FAIL-SAFE OPERATION ............................................................................................................................. 55

11.2.1 Fail-Safe Error Codes (displayed or transmitted via electrical interface) .......................................... 55

11.2.2 Analog Output (Current) values in dependence of Fail-Safe Error Codes ....................................... 56

11.3 CLEANING THE LENS ................................................................................................................................ 58

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11.4 CHANGING THE WINDOW ....................................................................................................................... 58

12 APPENDIX..................................................................................................................................................... 59

12.1 DETERMINATION OF SLOPE (FOR 2 – COLOR OPERATION) ...................................................................... 59

12.2 PERCENTAGE OF ALLOWED SIGNAL REDUCTION ..................................................................................... 59

12.3 DETERMINATION OF EMISSIVITY (FOR 1-COLOR OPERATION) ................................................................ 61

12.4 TYPICAL EMISSIVITY VALUES ................................................................................................................... 61

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Safety Instructions

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 110/230 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.

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Safety Instructions

General 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.

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Product Description

2 Product Description

The Endurance 1R Series of instruments are 2-color infrared noncontact temperature measurement
systems with variable focus, through-the-lens sighting, and parallax-free optics. 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. Temperature measurements
can be taken using either of the following modes:

• 1-color mode – for standard temperature measurements. The 1-color mode is best for

measuring the temperature of targets in areas where no sighting obstructions, either solid or
gaseous, exist. The 1-color mode is also best where the target completely fills the measurement
spot.

• 2-color mode – temperatures are determined from 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. The 2­color mode can also be used on targets that do not completely fill the measurement spot,
provided the background is much cooler than the target.

Each model operates as an integrated temperature measurement subsystem consisting of optical
elements, spectral filters, detector, 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.

Model

Temperature Range

2C 95% Attenuation
Minimum Temperature

Optical Resolution
(Nominal)

1RL

1RH

550 to 1800 °C (1022 to 3272°F) in 1C mode

600 to 1800 °C (1112 to 3272°F) in 2C mode

1000 to 3200°C (1832 to 5792°F)

800°C (1472°F)

1300°C (2372°F)

100:1

150:1

Focal Range F1 = Close Focus 300 mm to 600 mm (12" to 24")

F2 = Standard Focus 600 mm to ∞ (24" to ∞)

Table 1: Models

For the percentage of allowed signal reduction at temperatures below the minimum
temperature (95% attenuation) as shown above, refer to the 12 Appendix, page 59.

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Product Description

2.1 Theory of Operation for 2-Color Sensors

Two-color ratio technology makes possible accurate and repeatable temperature measurements that
are free from dependence 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.

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Product Description

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.

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 slope is preset at the factory at 1.000.

For information on determining an unknown slope, and for sample slopes, refer to the appendix of
this manual.

The slope is the deciding parameter for measurements in 2-

color mode! The emissivity

affects only measurements in 1-color mode.

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Technical Data

3 Technical Data

3.1 Measurement Specifications

Temperature Range

1RL 550 to 1800 °C (1022 to 3272°F) in 1C mode
600 to 1800 °C (1112 to 3272°F) in 2C mode

1RH 1000 to 3200°C (1832 to 5792°F))*
*(Indication only from 3000 to 3200°C (5432 to 5792°F)

Spectral Band Measured

1-color band 0.75 to 1.1 μm (1.0 μm nominal)
2-color bands 0.75 to 1.1 μm, 0.95 to 1.1 μm

System Accuracy ± (0.5% T

meas + 2°C), Tmeas in °C *

*At 23°C ±5°C (73°F ±9°F), emissivity/slope = 1.0, no
attenuation

Repeatability ±0.3% full scale

Temperature Resolution - Display and Outputs

1RL and 1RH 0.1°C (0.2°F)

Response Time (95% Response) 10 ms for signal to reach 95% of final temperature

Temperature Coefficient 0.03% full scale change per 1°C change in ambient temperature

Emissivity (1-color) 0.10 to 1.10, digitally adjustable in increments of 0.01

Slope (2-color) 0.850 to 1.150, digitally adjustable in increments of 0.001

Signal Processing Peak hold or Averaging

Noise Equivalent Temperature 1°C peak to peak, target emissivity of 1.00,
(NET) unobscured target
3°C peak to peak, for all specified attenuation conditions

Peak Hold Range 0.1 to 299.9 s (300 s = ∞)

Averaging Range 0.1 to 299.9 s (300 s = ∞)

Warm Up Period 15 minutes

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Technical Data

3.2 General Specifications

Control Panel (User Interface) Upper Display: Green 7-segment, 4 digits LED type for

displaying the measured object temperature and error codes

Lower Display: Green/Red background illuminated graphics

display type. Resolution is 32 * 136 pixels to display 2 text lines
of about 16 characters per line. It is the main screen/menu
display, which shows all information and configuration topics.

2 individual (red/green) LED’s to indicate the instrument status

and Laser/LED/Video on/off.

4 individual control pushbuttons, to walk through the menu

structure and to enter setup values

Environmental Rating IP65 (NEMA-4)
Ambient Temperature

Without cooling 0 to 65°C (32°F to 149°F)
With air cooling 0 to 120°C (32°F to 250°F)
With water cooling 0 to 175°C (32°F to 350°F)
With ThermoJacket 0 to 315°C (32°F to 600°F)

Storage Temperature

Electronics Housing -20 to 70°C (-4°F to 158°F)

Relative Humidity 10 to 95%, non-condensing at 22°C to 43°C (72°F to 110°F)

EMC EN 61326-1:2006

Safety EN 60825-1:2008-05

FDA laser safety compliant

Mechanical Shock MIL-STD-810G (IEC 68-2-27), 5 G, 11 msec duration, 3 axis

Vibration MIL-STD-810G (IEC 68-2-6), 2 G, 10 to 150 Hz 3 axis

Warm up Period 15 minutes

Weight (incl. nut & mnt. bracket)

Endurance sensor 1551g (3.42 lbs)
With air/water-cooled housing 2688g (5.93 lbs)

Housing Material

Stainless steel Mat.-No.: 1.4305, Mat.-Name.: X8CrNiS18-9

Fail-Safe Full or low scale, depending upon system failure. See section

11.2 Fail-Safe Operation, page 55.

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Technical Data

3.3 Electrical Specifications

Power Supply 24 VDC nominal, 20 to 48 VDC allowed, max. 12W

Electrical Interfaces all interfaces and I/O’s are galvanically isolated

Outputs

Analog (+mA Out, -mA Out) 0 - 20 mA, 4 - 20 mA, active output, 16 bit resolution

max current loop impedance: 500 Ω

Digital RS485 (A, B) Network compatible up to 32 sensors (2-wire half duplex)

Data format: 8 bit, no parity, 1 stop bit
Data rate: 1200, 2400, 9600, 19200, 38400 (default),
57600, 115200 Bit/s

2-wire half duplex, multidrop line capability

Alarm Output Relay Potential-free contact of a solid state relay, max. 48 V, 300 mA
(Relay, Relay) Contact behavior is settable via user interface between
(NO = Normally Open, NC = Normally Close,
PO = Permanently Open, PC = Permanently Close)

Figure 1: Spike Voltage Limitation for the Alarm Relay

Input

External Trigger/Hold Digital low/high, trigger for resetting AVERAGE, PEAK HOLD

or VALLEY HOLD to restart signal processing

Figure 2: External Trigger/Hold Wiring

Network 4-Wire 10/100 Mbit LAN/Ethernet with “Power over Ethernet”

capability to power the Endurance device via the interface.

Please refer for the correct wiring to PoE standard IEEE 802.3af,

mode A, 10/100 Mbit mixed DC & data.

Relay

≤ 48 V

Relay

Endurance sensor

Ext. relay in process environment

Endurance sensor

Ext. trigger in process environment

GND

Trigger

Ground

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Technical Data

3.4 Dimensions

The following illustrations show dimensions of a standard sensor, see Figure 3, a sensor with the
air/water-cooled housing option, see Figure 4, and the adjustable bracket, see Figure 5.

Figure 3: Dimensions of Endurance Head

Figure 4: Endurance Head with Air/Water-Cooled Housing Option

Figure 5: Adjustable Bracket

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Technical Data

3.5 Optical Specifications

Optical Resolution D:S (assumes 95% energy at the focus point)

EN1RL 100:1

EN1RH 150:1

Because the sensor has variable focus, through-the-lens sighting, and parallax-free optics, it can be
mounted almost anywhere. Adjustable focus distance range varies by model:

• F1 (Close Focus) models can be focused from 300 mm to 600 mm (12 to 24”)

• F2 (Standard Variable Focus) models can be focused from 600 mm to infinity (24” to infinity)

For 1-color temperature measurements make sure the target completely fills the measurement spot.
The spot size for any distance, when the unit is properly focused at that distance, can be determined
using the following formula and Figure 6.

Divide the distance (D, in Figure 6) by the D:S specification. For example, if the D:S specification is
150:1, and the sensor is 2000 millimeters (80 inches) from the target, divide 2000 by 150 (80 by 150),
resulting in a target spot size of which gives you a target spot size of 13.3 mm (0.5 in).

Figure 6: Spot Size Chart

The spot size calculated using this method is valid only at the focus distance. Spot

sizes out of focus distances will vary from the rule.

D = Distance
S = Spot size

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Technical Data

3.6 Scope of Delivery

The ENDURANCE delivery includes the following:

• Endurance 1R 2-Color Infrared Thermometer

• Fixed mounting bracket (E-FB) with mounting nut

• End cap for display

• Mini-DVD with Endurance SW, Operating Instructions and Quickstart guide

• Printed Quickstart guide

Accessories, which have to be ordered separately!

• Both Endurance communication and supply interface cables, a 12-wire a M16

12-socket DIN connector and a 4-

wire LAN/Ethernet cable, selected for the

needed temperature range

• The Endurance series terminal block with specific signal/wire assignment

•

PoE (Power over Ethernet) injector to supply the Endurance device via the
LAN/Ethernet cable

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Environment

4 Environment

Sensor location and configuration depends on the application. Before deciding on a location, you need
to be aware of the ambient temperature of the location, the atmospheric quality of the location
(especially for 1-color temperature measurements), and the possible electromagnetic interference in
that location. If you plan to use air purging, you need to have an air connection available. Also, wiring
and conduit runs must be considered, including computer wiring and connections, if used. The
following subsections cover topics to consider before you install the sensor.

4.1 Ambient Temperature

The sensing head is designed to operate in ambient temperatures between 0°C (32°F) and 65°C
(149°F). The internal ambient temperature can vary from 10°C (50°F) to 72°C (162°F). Internal
temperatures outside this range will cause a failsafe error. In ambient conditions above 65°C (149°F),
an optional air/water cooled housing is available to extend the operating range to 120°C (250°F) with
air cooling, or 175°C (350°F) with water cooling. When using the water cooled housing, it is strongly
recommended to also use the air purge collar to avoid condensation on the lens. In ambient conditions
up to 315°C (600°F), the ThermoJacket accessory should be used.

When using air or water cooling with air purging, make sure air and water supplies are installed
before proceeding with the sensor installation.

Water and air temperatures for cooling should be 15-30°C (60-86°F) for best performance. Chilled
water or air below 10°C (50°F) is not recommended. For air purging or air cooling, clean (filtered) or
“instrument” air is recommended.

4.2 Atmospheric Quality

Smoke, fumes, dust, and other contaminants in the air, as well as a dirty lens are generally not a
problem when using the 2-color mode (as long as the attenuation is equal in both spectral bands).
However, if the lens gets too dirty, it cannot detect enough infrared energy to measure accurately, and
the instrument will indicate a failure. It is good practice to always keep the lens clean. The Air Purge
Collar helps keep contaminants from building up on the lens.

If you use air purging, make sure an air supply with the correct air pressure is installed before
proceeding with the sensor installation.

4.3 Electrical Interference

To minimize electrical or electromagnetic interference or “noise” be aware of the following:

• Mount the electronics enclosure as far away as possible from potential sources of electrical

interference such as motorized equipment producing large step load changes.

• Use shielded wire for all input and output connections.

• Make sure the shield wire from the electronics to terminal block cable is earth grounded.

• For additional protection, use conduit for the external connections. Solid conduit is better than

flexible conduit in high noise environments.

• Do not run AC power for other equipment in the same conduit.

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Installation

5 Installation

5.1 Mechanical Installation

After all preparations are complete, you can install the sensor.
How you anchor the sensor depends on the type of surface and the type of bracket you are using. As
noted before, all sensors, whether standard or with the air/water-cooled housing option, are supplied
with an adjustable bracket and mounting nut. You can also mount the sensor through a hole, on a
bracket of your own design, or on one of the other available mounting accessories, see section
9 Accessories, page 44. If you are installing the sensor in a ThermoJacket accessory, you should use the
appropriate mounting device. (Refer to the ThermoJacket manual for further details.) If you do not
have the focusing tool accessory, the sensor must be focused before mounting inside a ThermoJacket
or before attaching an air purge collar.

5.1.1 Distance to Object

Sensor placement can be varied to suit the application. The following sections show sensor placement
and the various conditions where 2-color temperature measurements can be taken.

When installing the sensor, check for any high-intensity discharge lamps or heaters that
may be in the field of view (either background or reflected on a shiny target)! Reflected
heat sources can cause a sensor to give erroneous readings.

5.1.2 Sensor Placement (1-Color Mode)

Sensor placement for one-color temperature measurements is more critical than two-color
measurements. The sensor must have a clear view of the target. There can be no obstructions on the
lens, window, or in the atmosphere. The distance from the target can be anywhere beyond the
minimum requirements, as long as the target completely fills the field of view. The following figure
illustrates proper placement when using the one-color mode.

Figure 7: Proper Sensor Placement in 1-Color Mode

Target greater than spot size

Target equal to spot size

Target smaller than spot size

best

good

incorrect

ENDURANCE 1R Rev. E1 Sep 2015 19

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