RayTek MID User Manual

Raytek

MID

Noncontact Infrared Temperature Sensor

The MID™ 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. And the MID 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, all of which are adjustable on the 5-digit LCD interface.

Designed for applications where the target temperature is in the -40 to 600°C (-40 to 1112°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 85°C (185°F) without cooling.

Although the MID is small in size, it still has the features you need, with 1% accuracy and a choice of 2:1 or 10:1 optics, with user selectable output signals. And the MID’s response time is as fast or faster than many high-end systems.

The MID’s miniature size and low cost make it ideal for installation at multiple points along your process. Accurate. Easy to install. Affordable. With the MID, precision infrared temperature measurement is now an economical alternative.

Product Description

Highlights:

• Small sensing head fits where other sensors can’t

• Ambient operating range to 85°C (185°F) without cooling

• 5-digit backlit LCD interface

• Adjustable emissivity, peak hold, valley hold and averaging

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

• Choice of 2:1 or 10:1 optics

• Powered by 12-24 VDC at ≤100 mA

• Accessories for cooling and air purging

• Remote electronics box

• User selectable output signals

• Optional RS232 or RS485 communication

Worldwide Headquarters Raytek Corporation

Santa Cruz, CA USA Tel: 1 831 458 1110 800 227 8074 (U.S. and Canada only) Fax: 1 831 458 1239 www.raytek.com

Outputs: Scalable 4-20mA, 0-20mA, 0-5V,

J or K thermocouple

10mV/°C Head Ambient signal Cable Length 1 m (3.2 ft) standard, 3m (9.8 ft.) optional Output Impedance (T/C output) 20 ohm Minimum Load Impedance (mV output) 100K ohms Maximum Loop Impedance (mA output) 500 ohms with 24 VDC power supply Current Draw: 100 mA

Power Supply 11-26 VDC

Electrical Specifications

Raytek MID

General Specifications

Measurement Specifications

Accessories / Options*

Each standard MID package includes a sensing head, one mounting nut, 1 m (3.2 ft) of cable, die-cast housing with premounted electronics, and an operator’s manual

• Adjustable or fixed mounting bracket

• Air purge jacket

• Air cooling/purging system

• Longer cable: 3m (9.8 ft.)*

• Rs232 or RS485 communication*

*Must be specified at time of order

Nominal Optical Specifications

Sensing Head

Electronics Housing

D:S is the optical resolution expressed as a ratio of the distance

to the resolution spot divided by the diameter of the spot. Optical resolution for the MID is 2:1 and 10:1. Nominal spot size based on 90% energy.

General Dimensions

Spectral Response: 8 to 14 microns Optical Resolution: 2:1 or 10:1 Temperature Range: -40 to 600°C (-40 to 1112°F); -25 to 600°C for

J-thermocouple output

System Accuracy: ±1% of reading or ±1°C, whichever is greater

@23°C±5°C (73°F±9°F). Thermocouple output accuracy ±1% of reading or ±2.5°C, whichever is

greater @23°C±5°C System Repeatability: ±0.5% of reading or ±0.5°C (1°F), whichever is greater Temperature Coefficient: 0.15K per K or 0.15% per K, whichever is greater Temperature Resolution: 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

Environmental Rating NEMA-4 (IP 65) Ambient Temperature Range:

Sensing head 0 to 85°C (32 to 185°F) With air cooling -18 to 200°C (0 to 392°F)

Electronics housing 0 to 65°C (32 to 150°F) Storage Temperature -18 to 85°C (0 to 185°F) Relative Humidity 10 to 95%, non-condensing Construction:

Sensing head Stainless steel

Electronics housing Zinc, die-cast Weight:

Sensing head (w/1 m cable) 50 g (1.75 oz)

Electronics housing 270 g (9.5 oz)

5710 Kenosha Street Richmond, Illinois 60071 USA Phone: +1 (815) 678-2211 FAX: +1 (815) 678-3961 Internet: www.watlow.com e-mail: info@watlow.com

RIC-MID-0401

For Sales and Ordering Contact:

For Service and W arranty Contact:

Your Authorized W a t l ow Distributor Is:

25 (1.0)

(2.4)

80 (3.2)

mm (in)