On-Line Non-Contact Temperature Sensors - Calex Electronics

Catalogue On-Line Non-Contact Temperature Sensors

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EL Series Low Cost Non-Contact Temperature sensor manufacturer

The EL Series is a range of high quality, low cost, miniature sensors which measure the temperature of inaccessible or moving objects and materials.

They measure temperatures from -20°C to 500°C accurately and consistently, with an outstanding response time of 200 ms. These sensors are available as either 2-wire units with a 4-20mA output, or 4-wire units with voltage or thermocouple outputs. This choice of outputs makes the EL series compatible with almost any indicator, controller, industrial recorder or data-logging instrument.

GENERAL SPECIFICATIONS


	Temperature Range (other ranges to order)
	-20°C to 100°C	0°C to 250°C	0°C to 500°C
F	EL21LT-X	EL21MT-X	-
10:1	EL101LT-X	EL101MT-X	EL101HT-X
30:1	EL301LT-X	EL301MT-X	EL301HT-X

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	Output	Model-X
	4-20 mA	-0
	0-50 mV	-1
	0-100 mV	-2
	J thermocouple	-3
	K thermocouple	-4
	1 mV/°C	-5
	10 mV/°C	-6
	0-5 V	-7

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 urn

24 V DC (28 V DC max)

9 V DC

750 Q (4-20 mA output)

50Q (voltage/thermocouple output)

Output

Accuracy

Repeatability

Emissivity

Response Time,

Spectral Range

Power

Min. Sensor Voltage Max. Loop Impedance Output Impedance

MECHANICAL

Construction Dimensions Thread Mounting Cable Length Weight with Cable

ENVIRONMENTAL

Environmental Rating

The EL21 has 2:1 optics making it suitable for most applications where the sensor can be mounted close to the target. The EL101 is designed for small or distant targets and has an optical resolution of 10:1. The EL301 is designed for very small or distant targets and has an optical resolution of 30:1.

These compact sensors are small enough to fit almost anywhere and their rugged stainless steel housings make them ideal for applications where cleanliness and hygiene are paramount.

The EL Series Sensors are easy to install and will operate in ambient temperatures up to 50°C. For more hostile environments or difficult mounting conditions a wide range of accessories is available.

Stainless Steel

18 mm diameter x 85 mm long 016mm x 1 mm pitch 1 m 95 g

IP65

Ambient Temperature Range 0°C to 50°C

Relative Humidity 95% max. non-condensing

OPTIONS

♦ Longer cable (5 m max.)

♦ Certificate of calibration

ACCESSORIES

♦ Fixed mounting bracket

♦ Adjustable mounting bracket

♦ Air purge collar

♦ Air/water cooled housing

♦ Laser sighting tool

♦ Portable calibration checker

DIAMETER OF TARGET SPOT MEASURED VERSUS DISTANCE FROM SENSING HEAD

Distance: Sensor to object (inches)

07,

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i0.5_-——^ D:S 30:1 nominal

17.2 +

¡100 200Í

Calex Electronics Limited

PO Box 2, Leighton Buzzard Bedfordshire, England LU7 4AZ Tel: +44 (0)1525 373178/853800 Fax: +44 (0)1525 851319 Lo-call Tel: 0845 3108053 E-mail: info©calex.co.uk Online: http://www.calex.co.uk

: 10.5

30.5+

100 200¡

Distance: Sensor to object (mm)

EL301

Distance: Sensor to object (mm)

EL101

EL21

A2-4

Issue G - Oct 04

Specifications subject to change without notice