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MI
Miniature Infrared Sensor
Operating Instructions
Rev. F 04/2006
54301
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Declaration of Conformity for the European Community This instrument conforms to: EMC: IEC/EN 61326‐1 Safety: EN 61010‐1:1993 / A2:1995
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Contacts Europe USA Raytek GmbH Raytek Corporation 13127 Berlin, Germany CA 95061 – 1820, Santa Cruz Blankenburger Str. 135 1201 Shaffer Rd. PO Box 1820 Tel: +49 30 478008 – 0 Tel: +1 831 458 – 1110 or +49 30 478008 – 400 +1 800 227 – 8074 Fax: +49 30 4710251 Fax: +1 831 458 – 1239 raytek@raytek.de automation@raytek.com United Kingdom France Tel: +44 1908 630800 Tel: 0800 888 244 Fax: +44 1908 630900 ukinfo@raytek.com info@raytek.fr Raytek China Company
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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 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 that 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 in
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TABLE OF CONTENTS 1 SAFETY INSTRUCTIONS............................................1 2 DESCRIPTION...............................................................3 3 TECHNICAL DATA......................................................4 3.1 MEASUREMENT SPECIFICATIONS...............................4 3.2 OPTICAL SPECIFICATIONS..........................................6 3.3 ELECTRICAL SPECIFICATIONS....................................7 3.4 ENVIRONMENTAL SPECIFICATIONS........................
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5.3.1 Signal Output...................................................19 5.3.2 Head Ambient Temp. / Alarm Output.............20 5.3.3 Thermocouple Output.......................................22 5.4 INPUTS FTC..............................................................23 5.4.1 Emissivity Setting (analog controlled).............24 5.4.2 Emissivity Setting (digital controlled).............25 5.4.3 Ambient Background Temperature Compensation...............................................
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8 ACCESSORIES.............................................................46 8.1 OVERVIEW................................................................46 8.2 ADJUSTABLE MOUNTING BRACKET.........................48 8.3 FIXED MOUNTING BRACKET....................................49 8.4 AIR PURGING JACKET...............................................50 8.5 AIR COOLING SYSTEM..............................................52 8.6 RIGHT ANGLE MIRROR............................................57
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11.6.2 Analog Output, Scaling.................................73 11.6.3 Alarm Output.................................................73 11.6.4 Factory default values.....................................73 11.6.5 Lock Mode.......................................................74 11.6.6 Mode Setting for the Digital Input FTC3.......74 11.6.7 Changing the Sensing Head Calibration Data74 11.6.8 Ambient Background Temperature Compensation......................................................
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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 should only be operated by trained personnel in accordance with these instructions and local safety regulations. Acceptable Operation
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Safety Instructions 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. Warnings concerning operation to avoid personal injury. Pay particular attention to the following safety instructions. Use in 110 / 230 VAC electrical systems can result in electrical haza
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Description 2 Description The miniature infrared sensors MI are noncontact infrared temperature measurement systems. They accurately and repeat ably measure the amount of energy emitted from an object and convert that energy into a temperature signal. The following outputs are available: • J‐Thermocouple • K‐Thermocouple • 0 ‐ 5 Volt • 0 ‐ 20 mA or 4 ‐ 20 mA • 10 mV / °C head ambient temperature signal • RS232 interface • optional: RS485 interface The sensing head is protect
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Technical Data 3 Technical Data 3.1 Measurement Specifications Temperature Range LT ‐40 to 600°C (‐40 to 1112°F) for J‐Thermocouple: ‐25 to 600°C (‐13 to 1112°F) Spectral Response LT 8 to 14 μm Response Time All models 150 ms (95% response) Accuracy LT ± 1% or ± 1°C (± 2°F) whichever is greater LT ± 2°C (± 4°F) for target temp. < 20°C (68°F) TC outputs ± 1% or ± 2.5°C (± 5°F) whichever is greater At ambient temperature 23°C ±5°C (73°F ±9°F) Repeatability All models ± 0.5%
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Technical Data Temperature Resolution LT ± 0.1 K (± 0.2°F)* ± 0.25 K (± 0.5°F)** * For a zoomed temperature span of 300°C (600°F) ** For the full temperature range of the unit Temperature Coefficient MIC ± 0.05 K per K or ± 0,05% / K whichever is greater, at ambient: 23 to 125°C (73 to 185°F) MIH ± 0.05 K per K or ± 0,05% / K whichever is greater, at ambient: 23 to 180°C (73 to 356°F) MIC, MIH ± 0.1 K per K or ± 0.1% per K whichever is greater, at ambient: 0 to 23°C (32 to 73°F
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Technical Data 3.2 Optical Specifications Optical Resolution D:S MID, MIC; MIH 22:1 (typ.), 21:1 (guaranteed) MID, MIC; MIH 10:1 MID, MIC 2:1 At 90% energy in minimum and distance 400 mm (15.7 in.) Figure 1: Spot Size Chart 6 MI
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Technical Data 3.3 Electrical Specifications Power Supply Voltage 12 to 26 VDC Current 100 mA Outputs 1. Output (OUT) 0 to 20 mA, or 4 to 20 mA, or 0 to 5 V, or Thermocouple (J or K) 2. Output (AMB) 0 to 5 V output for head ambient temperature (0 to 500°C, 32 to 932°F) or output for alarm relay (software enabled, only in conjunction with RS232/485) mA Output recommended loop impedance see Figure 9 on page 19. 0 to 5 V Outputs min. load impedance 100 kΩ (a lower load impedan
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Technical Data 3.4 Environmental Specifications Ambient Temperature MIH sensing head 0 to 180°C (32 to 356°F) MIC sensing head 0 to 125°C (32 to 257°F) MID sensing head 0 to 85°C (32 to 185°F) MID with air cooling ‐18 to 200°C (0 to 392°F) Electronics box 0 to 65°C (32 to 150°F) Storage Temperature ‐10 to 85°C (14 to 185°F) Rating (Head) IP 65 (NEMA‐4), not for models with an optical resolution of 2:1 Rating (Box) IP 65 (NEMA‐4) Relative Humidity 10% to 95% non‐condensing EM
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Technical Data 3.5 Dimensions Standard cable length 1 m (3 ft.) MID/MIC: Ø 5 mm (0.2 in) MIH: Ø 3 mm (0.12 in) Figure 2: Dimensions of Sensing Head 2 mounting holes, Ø 4.5 mm (0.17 in) MI 9
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Technical Data Figure 3: Dimensions of Electronic Box 3.6 Scope of Delivery The scope of delivery includes the following: • Sensing head • 1 m head cable • Mounting nut • Electronic box • Operating instructions 10 MI
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Basics 4 Basics 4.1 Measurement of Infrared Temperature All surfaces emit infrared radiation The intensity of this infrared radiation changes according to the temperature of the object. Depending on the material and surface properties, the emitted radiation lies in a wavelength spectrum of approximately 1 to 20 μm. The intensity of the infrared radiation (”heat radiation”) is dependent on the material. For many substances this material‐dependent constant is known.
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Basics 4.2 Emissivity of Target Object To determine the emissivity of the target object refer to section 12.1 Determination of Emissivity on page 81. If emissivity is low, measured results could be falsified by interfering infrared radiation from background objects (such as heating systems, flames, fireclay bricks, etc. close beside or behind the target object). This type of problem can occur when measuring reflective surfaces and very thin materials such as plastic films and gl
