M18T Series T-GAGE® Temperature Sensor with Discrete Outputs

Features

• 18 mm sensor with discrete output and TEACH configuration
• Fast 25 ms response time with up to 20 Hz switching speed
• Easy-to-use TEACH configuration without potentiometer adjustments
• Small, self-contained package; no auxiliary controller needed
• Rugged encapsulated design for harsh environments
• Choice of 2-meter or 9-meter unterminated cable, or 5-pin M12 quick disconnect
• Product motion is not required for sensing
• Remote configuration is available in both Static and Dynamic modes

⚠️ WARNING: Do not use this device for personnel protection. Using this device for personnel protection could result in serious injury or death. This device does not include the self-checking redundant circuitry necessary to allow its use in personnel safety applications. A device failure or malfunction can cause either an energized (on) or de-energized (off) output condition.

⚠️ AVERTISSEMENT : N'utilisez pas ce dispositif pour la protection du personnel. L'utilisation de ce dispositif pour la protection du personnel pourrait entraîner des blessures graves ou mortelles. Ce dispositif n'est pas équipé du circuit redondant d'autodiagnostic nécessaire pour être utilisé dans des applications de protection du personnel. Une panne ou un dysfonctionnement du dispositif peut entraîner l'activation ou la désactivation de la sortie.

To view or download the latest technical information about this product, including specifications, dimensions, accessories, and wiring, go to www.bannerengineering.com.

Models

(1) To order the 9 m (30 ft) PVC cable model, add the suffix "W/30" to the cabled model number. For example, M18TB8 W/30. Models with a quick disconnect require a mating cordset.

Overview

The T-GAGE analog sensor is a passive, non-contacting, temperature-based device. It is used to detect objects that are either hotter or colder than the ambient condition and then activate an output.

Although it looks and operates just like an Expert™ photoelectric sensor, the T-GAGE detects the infrared light energy emitted by objects instead of its own emitted light. The sensor uses a thermopile detector, made up of multiple infrared-sensitive elements (thermocouples) to detect this infrared energy within its field of view (see "M18T Sensing Field of View" on page 2).

Potential Applications

• Hot part detection (baked goods, metals, bottles)
• Ejection verification of injection-molded parts
• Flame process verification
• Hot glue detection (packaging equipment, book binding)
• Cold part detection (frozen foods, ice, dairy)
• Roller monitoring

NOTE: The T-GAGE M18T sensor is not intended for absolute temperature measurement or for safety-related fire detection use.

NOTE: Le T-GAGE M18T n'est pas conçu pour une mesure de température absolue ni pour une utilisation dans le cadre de sécurité pour la détection de feu.

Image of the M18T Series T-GAGE® temperature sensor, showing its cylindrical body and lens.

Indicators

Sensing Field of View

Sensing range is determined by the sensor's field of view or viewing angle, combined with the size of the object(s) being detected. The sensor's distance-to-spot size ratio (D:S ratio) is inversely related to the viewing angle; a sensor with a small viewing angle will have a large D:S ratio. The T-GAGE M18T sensors have D:S ratios of 6:1, 8:1 or 14:1. For a sensor with an 8:1 D:S ratio, the sensor spot size is a 1" diameter circle at a distance of 8"; farther from the sensor face the spot size will be larger.

Diagram illustrating the sensor's sensing field of view, showing a cone extending from the sensor, with the spot size increasing with distance. A note indicates a 1-inch diameter spot at 8 inches distance for an 8:1 D:S ratio.

Detection spot size versus distance from sensor

Apparent Temperature

Two factors that have an influence on apparent temperature are the object's emissivity and whether or not the object fills the sensor's field of view.

Object Emissivity

A "blackbody" is a "perfect" emitter, with an emissivity of 1.0 at all temperatures and wavelengths. Most surfaces emit only a fraction of the amount of thermal energy that a blackbody would. Typical T-GAGE applications will be sensing objects with emissivities ranging from 0.5 to 0.95. Many references are available with tables of emissivity coefficients for common materials. In general, shiny unpainted metals have low emissivity, while non-glossy surfaces have high emissivity.

Shiny Surfaces

A mirror or shiny surface can redirect an object's emitted energy to an undesired location, or even bring additional unintended thermal energy into the sensor's field of view. See "Application Note" on page 7.

Object Size

If the object being detected does not fill the sensor's field of view, then the sensor averages the temperature of that object and whatever else is in the sensing field of view. For the sensor to collect the maximum amount of energy, the object should completely fill the sensor's field of view. In some applications, when the object is too small, this may not be possible. In such cases, if the object is hot enough, the thermal contrast may still be adequate to trigger the sensor output.

Installation

Align the sensor toward the object to be detected. Visually align if possible, or use the alignment device accessory listed in "M18T Additional Accessories" on page 8.

Installation Note

Wiring Diagrams

Diagrams showing wiring for cabled models and quick disconnect (QD) models. For cabled models, connections are shown for Vin, GND, Load, and Remote Teach. For QD models, a standard M12 connector pinout is referenced.

NOTE: Cabled wiring diagrams are functionally identical.

NOTE: Connect the shield wire to earth ground or DC common. Shielded cordsets are recommended for all quick disconnect models.

Cabled Model Wiring:

• bn (Brown): +10-30 V DC
• wh (White): Load
• bk (Black): GND
• gy (Gray): Remote Teach
• shield: Shield

Quick Disconnect (QD) Model Wiring: Refers to standard M12 connector pinout (see Accessories section for details).

Sensor Configuration

Configure the sensor using one of two TEACH methods:

• Two-Point Static TEACH
• Dynamic TEACH

Use the push button or remote input to configure the sensor.

NOTE: The duration of each remote line pulse (corresponding to a push button "click"), and the period between multiple pulses, are defined as "T": 0.04 seconds < T < 0.8 seconds.

Push Button Enable/Disable

The push button can be disabled using the remote input wire (gray) to prevent unauthorized adjustment. To disable the push button, connect a normally open switch between the remote input wire and dc common or connect the remote input wire to a digital output on a Programable Logic Controller (PLC). Perform the procedure below to enable or disable the push button, where 0.04 s < T < 0.8 s.

2-Point Static TEACH

Use 2-Point Static TEACH configuration method for applications where both ON and OFF target conditions can be presented to the sensor statically by the operator. The sensor establishes a single sensing threshold (the switchpoint) midway between the two configured conditions, with the Output ON condition on one side and the Output OFF condition on the other.

NOTE: The sensor returns to RUN mode if the first 2-Point Static TEACH condition is not configured within 60 seconds.

NOTE: After the first condition is configured, the sensor remains in 2-Point Static TEACH configuration until the second condition is configured.

Diagrams illustrating the 2-Point Static TEACH process for sensing a hotter-than-ambient object and a colder-than-ambient object, showing temperature scales and output states.

1. Access 2-Point Static TEACH configuration.

2. Present the output ON condition.

3. Present the output OFF condition.

NOTE: To exit 2-Point Static TEACH configuration without saving a configuration, press and hold the push button for 2 seconds or hold the remote line for 2 seconds. The sensor will return to Run mode without saving a configuration.

Dynamic TEACH

Use Dynamic TEACH configuration method for applications where both the ON and OFF target conditions can not be presented to the sensor dynamically by the operator. After the configuration has been completed, the threshold at the midpoint is optimized by the sensor halfway between the average signals presented during the Dynamic TEACH configuration.

The duration of each button click or remote input pulse is defined as T, where T is: 0.04 s < T < 0.8 s.

Diagrams illustrating the Dynamic TEACH configuration steps.

1. Access Dynamic TEACH configuration.

2. Present the sensing conditions.

3. End Dynamic TEACH configuration.

Hot Operate/Cold Operate Select

Configure the sensor for Hot Operate or Cold Operate using the remote input wire (gray). Pulse the remote line three times to toggle between Hot and Cold Operate. The duration of each button click or remote input pulse is defined as T, where T is: 0.04 s < T < 0.8 s.

Specifications

Hysteresis

5% of taught differential (minimum 1 °C)

Adjustments

TEACH configuration

Indicators

One bicolor (Green/Red) status LED, one Amber LED (see "M18T Indicators" on page 2)

Remote Teach Input Impedance: 3 kΩ

Construction

• Threaded Barrel: 304 stainless steel
• Push Button Housing: ABS/PC
• Push Button: Santoprene
• Lightpipes: Acrylic

Required Overcurrent Protection

⚠️ WARNING: Electrical connections must be made by qualified personnel in accordance with local and national electrical codes and regulations.

Overcurrent protection is required to be provided by end product application per the supplied table. Overcurrent protection may be provided with external fusing or via Current Limiting, Class 2 Power Supply.

Supply wiring leads < 24 AWG shall not be spliced. For additional product support, go to www.bannerengineering.com.

Supply Wiring (AWG) vs. Required Overcurrent Protection (A)

NOTE: Les raccordements électriques doivent être effectués par du personnel qualifié conformément aux réglementations et codes électriques nationaux et locaux.

Une protection de surintensité doit être fournie par l'installation du produit final, conformément au tableau fourni. Vous pouvez utiliser un fusible externe ou la limitation de courant pour offrir une protection contre la surtension dans le cas d'une source d'alimentation de classe 2.

Les fils d'alimentation < 24 AWG ne peuvent pas être raccordés. Pour obtenir un support produit supplémentaire, rendez-vous sur le site www.bannerengineering.com.

Câblage d'alimentation (AWG) vs. Protection contre la surtension requise (ampères)

FCC Part 15 Class A for Unintentional Radiators

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

(Part 15.21) Any changes or modifications expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Industry Canada ICES-003(A)

This device complies with CAN ICES-3 (A)/NMB-3(A). Operation is subject to the following two conditions: 1) This device may not cause harmful interference; and 2) This device must accept any interference received, including interference that may cause undesired operation.

Cet appareil est conforme à la norme NMB-3(A). Le fonctionnement est soumis aux deux conditions suivantes: (1) ce dispositif ne peut pas occasionner d'interférences, et (2) il doit tolérer toute interférence, y compris celles susceptibles de provoquer un fonctionnement non souhaité du dispositif.

Application Note

The following are examples of materials with high and low emissivity. Additional examples can be found online.

Sensor-Friendly Materials (High Emissivity)

• Aluminum anodized
• Asphalt
• Brick
• Carbon-lampblack or plate material
• Cardboard-corrugated or chipboard
• Concrete
• Glass smooth, lead, or borosilicate (e.g., Pyrex®)
• Gypsum (including finished boards)

Sensor-Friendly Materials (High Emissivity) - Continued

• Ice
• Iron and steel (except bright galvanized)
• Paper-most types, regardless of color
• Styrofoam insulation
• Plastics
• Water
• Wood-most types

Materials to Sense with Caution (Low Emissivity)

• Aluminum-plain or highly polished
• Copper
• Galvanized iron
• Stainless steel
• Vapor-deposited materials

Dimensions

All measurements are listed in millimeters, unless noted otherwise. The measurements provided are subject to change.

M18T cabled models

Diagrams showing dimensions for M18T cabled models. Overall length is approximately 81.2 mm (3.20 in) for M18T..8, 81.7 mm (3.22 in) for M18T..6E, and 86.5 mm (3.41 in) for M18T..14. The sensor body diameter is 18 mm (0.71 in).

M18T QD models

Diagrams showing dimensions for M18T QD models. Overall length is approximately 91.3 mm (3.59 in) for M18T..8Q, 91.8 mm (3.61 in) for M18T..6EQ, and 96.6 mm (3.80 in) for M18T..14Q. The sensor body diameter is 18 mm (0.71 in).

Accessories

Cordsets

Table listing 5-Pin Single-Ended M12 Female Shielded Cordsets with model numbers, lengths, style (Straight or Right Angle), dimensions, and pinout.

M12 connector dimensions: 14.5 mm (0.57 in) diameter.

Brackets

Table listing available brackets with descriptions and dimensions.

SMB 18A

Right-angle mounting bracket with a curved slot for versatile orientation. Made of 12-ga. stainless steel with an 18 mm sensor mounting hole. Hole center spacing: A to B = 24.2. Hole size: A = 4.6, B = 17.0 x 4.6, C = 18.5. Diagram shows dimensions 42, 30, 41.

SMB 18SF

18 mm swivel bracket with M18 x 1 internal thread. Made of black thermoplastic polyester with stainless steel swivel locking hardware. Hole center spacing: A = 36.0. Hole size: 5.3, B = 18.0. Diagram shows dimensions 51, 25, 42.

SMB 18 UR

2-piece universal swivel bracket made of 300 series stainless steel with stainless steel swivel locking hardware. Mounting hole for 18 mm sensor. Hole center spacing: A = 25.4, B = 46.7. Hole size: B = 6.9 x 32.0, C = 18.3. Diagram shows dimensions 137, 64, 42.

Laser Alignment Tool

Laser Alignment Tool - LAT1812. Enables easy sensor alignment at long distances. Kit includes one SMB 1812 bracket and an M12 laser emitter. Image of the Laser Alignment Tool, a cylindrical device with a laser emitter.

Instructions: Thread bracket housing onto barrel of mounted sensor. M12 laser emitter inserted into housing provides a precise laser spot for aiming temperature sensor. (Refer to Banner data sheet p/n 122529 for more information.) Remove the laser emitter before using the sensor.

Product Support and Maintenance

Clean Sensor with Compressed Air and Water

Handle the sensor with care during installation and operation. Sensor windows soiled by fingerprints, dust, water, oil, etc. create stray light that may degrade the peak performance of the sensor.

Blow the window clear using filtered, compressed air, then clean as necessary using only water and a lint-free cloth. Do not use any other chemicals for cleaning.

Repairs

Contact Banner Engineering for troubleshooting of this device. Do not attempt any repairs to this Banner device; it contains no field-replaceable parts or components. If the device, device part, or device component is determined to be defective by a Banner Applications Engineer, they will advise you of Banner's RMA (Return Merchandise Authorization) procedure.

IMPORTANT: If instructed to return the device, pack it with care. Damage that occurs in return shipping is not covered by warranty.

Contact Us

Banner Engineering Corp. headquarters is located at: 9714 Tenth Avenue North | Plymouth, MN 55441, USA | Phone: +1 888 373 6767

For worldwide locations and local representatives, visit www.bannerengineering.com.

Banner Engineering Corp Limited Warranty

Banner Engineering Corp. warrants its products to be free from defects in material and workmanship for one year following the date of shipment. Banner Engineering Corp. will repair or replace, free of charge, any product of its manufacture which, at the time it is returned to the factory, is found to have been defective during the warranty period. This warranty does not cover damage or liability for misuse, abuse, or the improper application or installation of the Banner product.

THIS LIMITED WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED (INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE), AND WHETHER ARISING UNDER COURSE OF PERFORMANCE, COURSE OF DEALING OR TRADE USAGE.

This Warranty is exclusive and limited to repair or, at the discretion of Banner Engineering Corp., replacement. IN NO EVENT SHALL BANNER ENGINEERING CORP. BE LIABLE TO BUYER OR ANY OTHER PERSON OR ENTITY FOR ANY EXTRA COSTS, EXPENSES, LOSSES, LOSS OF PROFITS, OR ANY INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES RESULTING FROM ANY PRODUCT DEFECT OR FROM THE USE OR INABILITY TO USE THE PRODUCT, WHETHER ARISING IN CONTRACT OR WARRANTY, STATUTE, TORT, STRICT LIABILITY, NEGLIGENCE, OR OTHERWISE.

Banner Engineering Corp. reserves the right to change, modify or improve the design of the product without assuming any obligations or liabilities relating to any product previously manufactured by Banner Engineering Corp. Any misuse, abuse, or improper application or installation of this product or use of the product for personal protection applications when the product is identified as not intended for such purposes will void the product warranty. Any modifications to this product without prior express approval by Banner Engineering Corp will void the product warranties. All specifications published in this document are subject to change; Banner reserves the right to modify product specifications or update documentation at any time. Specifications and product information in English supersede that which is provided in any other language. For the most recent version of any documentation, refer to: www.bannerengineering.com.

For patent information, see www.bannerengineering.com/patents.