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Raytek, the Raytek logo, and Thermalert are registered trademarks
of Raytek Corporation.
©2001 Raytek Corporation, Printed in USA, 3/01 Rev. A
Specifications subject to change without notice. 3-1022
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
80
(3.2)
60
(2.4)
25
(1.0)
mm (in)
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 Authoriz ed W atlow Distributor Is: