Raytek MI Data sheet

RAYTEK COMPACT SERIES

Datasheet

Noncontact Temperature Measurement for Industrial Applications

MI Highlights

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Small sensing head ﬁts where other sensors can’t

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Three Ambient operating ranges

MID 85ºC (185ºF) MIC 125ºC (257ºF) MIH 180ºC (356ºF)

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5-digit backlit LCD user interface

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Adjustable Emissivity, Peak Hold, Valley Hold and

Averaging functions

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1% accuracy from -40°C to 600°C (-40°F to 1112°F)

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10:1, 22:1 optics

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Accessories for cooling and air purging

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Remote electronics box

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RS-232 or optional RS-485 digital communications

for remote setup and monitoring

The Raytek MI is a two-piece infrared temperature

measurement system with miniature sensing head and

separate electronics. The sensor is small enough to be

installed just about anywhere, yet it performs as well as much

larger systems. The MI electronics include a host of signal

processing features which you won’t normally ﬁnd in systems

in this price range, including Emissivity, Peak Hold, Valley

Hold, and Averaging function, all of which are adjustable on

the 5-digit LCD user interface.

Designed for a wide range of applications where the target

temperature is in the -40°C to 600°C (-40°F to 1,112°F)

range, the sensor is housed in a rugged stainless steel

enclosure to ensure long term performance, even in harsh

industrial environments with ambient temperatures up to

180°C (356°F) without cooling. Although the MI unit is small

in size, it still has the features you need, with 1% accuracy,

10:1 or 22:1 optics and user selectable output signals. And

the MI system’s response time is as fast or faster than many

advanced systems.

Measurement Speciﬁcations

Spectral Response: Model LT (Low Temp.) 8 to 14 microns

Optical Resolution: LT 10:1, 22:1

Temperature Range: Model LT -40°C to 600°C (-40°F to 1112°F);

-25°C to 600°C for J-thermocouple output

System Accuracy: ±1% of reading or ±1°C, whichever is greater Thermocouple output accuracy ±1% of reading or ±2.5°C, whichever is greater

System Repeatability: ±0.5% of reading or ±0.5°C (1°F), whichever is greater

Temperature Coefﬁcient: MID 0.15K per K or 0.15% per K, MIC 0.05K per K or 0.05% per K MIH 0.05K per K or 0.05% per K

whichever is greater*

Temperature Resolution: LT 0.3°C or 0.5°F

System Response Time: 150ms (95%)

Emissivity: 0.100 to 1.100 digitally adjustable

increments of .001

Transmission: 0.100 to 1.100 digitally adjustable increments of .001

Signal Processing: Peak hold, valley hold, variable averaging ﬁlter, adjustable up to 998 seconds

* NIST/DKD certiﬁed models available with 0.05K per K

Nominal Optical Speciﬁcations

Even more features are available with the RS-232 or optional

RS-485 communications and the DataTemp Multidrop

Software. These features include remote control and

monitoring of all sensor variables, a 5V alarm signal triggered

by a target temperature or head ambient temperature, an

8-position “recipe” table that can be easily interfaced to

an external control system, an external reset signal input

for signal processing, and even external inputs for analog

emissivity adjustment or reﬂected energy compensation.

The MI unit’s miniature size and low cost make it ideal for

installation at multiple points along your process. Accurate.

Rugged. Easy to install. Affordable. With the MI, precision

infrared temperature measurement is now an economical

alternative.

Raytek MI – miniature sensor, maximum performance!

D:S is the optical resolution expressed as a ratio of the distance to the measurement spot divided by the diameter of the spot.

Optical resolution for the MI is 10:1, 22:1.

Nominal spot size based on 90% energy.

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