Specifications
Temperature Measurement Range
0º to 300º C (32º to 572º F) standard;
custom ranges available
Sensing Range
Depends on object size and sensing field of view (see
Sensing Field of View on page 2)
Wavelength
8 to 14 µm
Distance to Spot Size (D:S) Ratio
6:1, 8:1, or 14:1, depending on model
Supply Voltage
12 to 30V dc (10% maximum ripple)
@ less than 35 mA (exclusive of load)
Output Configuration
Analog: 0-10V or 4-20 mA, depending on model
Alarm: PNP (current sourcing)
Output Protection
Protected against short circuit conditions
Output Ratings
Analog Voltage: 2.5 kΩ minimum load resistance
Analog Current: 1 kΩ max. @ 24V input; max. load
resistance = [(Vcc - 4)/0.02]Ω
For current output (4-20mA models): Ideal results
are achieved when the total load resistance R = [(Vin -
4)/0.02]Ω. Example, at Vin = 24 V dc, R ~= 1kΩ (1
watt)
Alarm: Off-state leakage: < 10 microamps; Satura-
tion: < 1.2 V @ 10 mA and < 1.6V @ 100 mA
Delay at Power-Up
1.5 seconds
Output Response Time
75 ms (for a 95% step change)
Repeatability
± 1% of measurement, or ± 1º C, whichever is greater
Minimum Taught Differential
10º C
Linearity
From 0º to 50º C: ±2ºC
From 50º to 300º C: ±1ºC or ±1%, whichever is great-
er
Adjustments
TEACH-Mode programming
Indicators
One bicolor (Green/Red) status LED, one Yellow LED
(see Status Indicators on page 4)
Remote Teach Input
Impedance: 3 kΩ minimum load resistance
Construction
Threaded Barrel: 304 stainless steel
Push Button Housing: ABS/PC
Push Button: Santoprene
Lightpipes: Acrylic
Operating Conditions
Temperature: -20º to +70º C (-4º to 158º F)
Environmental Rating
Leakproof design is rated IEC IP67; NEMA 6
Temperature Warm-Up Time
5 minutes
Certifications
for voltage models (M18TU..)
Current models (M18TI..) are pending CE
Application Note
Following are examples of materials with high and low emissivity. (Many more examples can be found in sources such as the Internet.)
Sensor-Friendly Materials
(High Emissivity)
Materials to Sense with Caution
(Low Emissivity - Test, Test, Test!)
• 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)
• Ice
• Iron and steel (except bright galvanized)
• Paper - most types, regardless of color
• Styrofoam® insulation
• Plastics
• Water
• Wood
• Rubber (e.g., tires)
• Aluminum - plain or highly polished
• Copper
• Galvanized iron
• Stainless steel
• Vapor-deposited materials
T-GAGE™ M18T Series Infrared Temperature Sensors
6 www.bannerengineering.com - tel: 763-544-3164 P/N 123698 Rev. A