MLE21MT-0 CALEX, MLE21MT-0 Datasheet
MLE21MT-0
Manufacturer Part Number
MLE21MT-0
Description
INFRARED TEMPERATURE SENSOR, 0°C To +250°C
Manufacturer
CALEX
Series
MLEr
Datasheet
1.MLE21MT-0.pdf
(1 pages)
Specifications of MLE21MT-0
Temperature Sensing Range
0°C To +250°C
Field Of View
2
Analog Outputs
4-20mA
Emissivity
Fixed 0.95
Operating Temperature Range
0°C To +50°C
Lead Free Status / RoHS Status
na
The new MLE Series is a range of minia-
ture infrared temperature sensors with
separate electronics.
MLE sensors are capable of measuring
temperatures in the range -20°C to 500°C
and are available with either a current,
voltage or thermocouple output.
The miniature sensing head measures just
18 mm diameter x 45 mm. It is made of
stainless steel, sealed to IP65, and will
operate in ambient temperatures up to
+70°C without additional cooling. This
makes the MLE Series ideal for applica-
tions where there is only a small amount
of room available to mount the sensor or
the ambient temperature around the
sensing head is higher than normal.
The electronics module measures 98 mm x
64 mm x 34 mm. It is made of die-cast
aluminium, sealed to IP65, and will oper-
ate in ambient temperatures up to +50°C.
It is powered from a 24 VDC (28 VDC max)
power source.
The emissivity setting is fixed at 0.95,
making the MLE Series suitable for the
majority of applications where the target
is made of a non-reflective material such
as paper, plastic, rubber, cloth, food etc.
or it can be used to measure metals that
are painted, anodised or oxidised.
K thermocouple
J thermocouple
Non-Contact
Temperature
Calex Electronics Limited
MLE Series
Bedfordshire, England LU7 4AZ
Tel: +44 (0)1525 373178/853800
Online: http://www.calex.co.uk
0-100 mV
10 mV/°C
Two-Piece
4-20 mA
0-50 mV
PO Box 2, Leighton Buzzard
1 mV/°C
Output
Lo-call Tel: 0845 3108053
E-mail: info@calex.co.uk
Fax: +44 (0)1525 851319
Convir
0-5 V
Sensor
Model-X
-0
-1
-2
-3
-4
-5
-6
-7
GENERAL SPECIFICATIONS
Output
Accuracy
Repeatability
Emissivity
Response Time, t 90
Spectral Range
Power
Min. Sensor Voltage
Max. Loop Impedance
Output Impedance
MECHANICAL
Construction
Dimensions
Thread Mounting
Cable Length
Weight with Cable
ENVIRONMENTAL
Environmental Rating
Ambient Temperature Range 0°C to 70°C (sensing head), 0°C to 50°C (electronics module)
Relative Humidity
ACCESSORIES
DIAMETER OF TARGET SPOT MEASURED VERSUS DISTANCE FROM SENSING HEAD
Fixed mounting bracket
Adjustable mounting bracket
Air purge collar
Laser sighting tool
Portable calibration checker
Distance: Sensor to object (inches)
Distance: Sensor to object (mm)
0
0.4
10.5
0
MLE21
4
60.5
100
2.4
D:S 2:1 nominal
Temperature Range
-20°C to 100°C
MLE21LT-X
MLE101LT-X
MLE301LT-X
110.5
200
Issue B - Mar 05
4.4
8
See table
±1% of reading or ±1°C whichever is greater
±0.5% of reading or ±0.5°C whichever is greater
Fixed at 0.95
200 ms (90% response)
8 to 14 µm
24 V DC (28 V DC max)
9 V DC
750 Ω (4-20 mA output)
50 Ω (voltage/thermocouple output)
SENSING HEAD
Stainless Steel
18 mm diameter x 45 mm long
16 mm diameter x 1 mm pitch
1 m
294 g
IP65
95% max. non-condensing
Distance: Sensor to object (inches)
Distance: Sensor to object (mm)
0
0.4
10.5
0
MLE101
(other ranges to order)
0°C to 250°C
MLE21MT-X
MLE101MT-X
MLE301MT-X
4
20.5
100
0.8
OPTIONS
D:S 10:1 nominal
Longer sensor cable (5 m max.)
Certificate of calibration
Combined thermocouple
extension/power cable
30.5
200
1.2
8
Specifications subject to change without notice
ELECTRONICS MODULE
Die-cast Aluminium
98 mm x 64 mm x 34 mm
Distance: Sensor to object (inches)
Distance: Sensor to object (mm)
0.4
10.5
0
0
0°C to 500°C
–
MLE101HT-X
MLE301HT-X
MLE301
13.8
4
0.5
100
D:S 30:1 nominal
17.2
200
0.7
8
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