Dwyer ILA - Manual

Series ILA In-Line IR Sensor
Specifications - Installation and Operating Instructions
Bulletin E-90-ILA
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
SPECIFICATIONS
Temperature Range: 32 to 932°F (0 to 500°C).
Accuracy: 1% of reading or 1°C whichever is greater.
Emissivity: 0.95 (Fixed).
Distance to Target Size Ratio: 15:1.
Response Time: 240 ms.
Ambient Operating Temperature: 32 to 158°F (0 to 70°C).
Power Requirement: 24 VDC.
Repeatability: 0.5% of reading or 0.5°C whichever is greater.
Outputs: 4 to 20 mA, 0 to 50 mVDC, J type thermocouples.
Cable Length: 3.3 ft (1 m).
Spectral Response: 8 to 14 microns.
Housing: Stainless steel.
Weight: 3.35 oz (95 g).
Agency Approval: CE.
3 Ft CABLE
[1000]
4-1/16
[103]
15/32
[12]
M16 ULTRA FINE 1.0MM PITCH M16 ULTRA FINE 1.0MM PITCH
NUT
45/64
[18.0]
5/16
[8.0]
23/32
[18]
ø23/32
[18]
The Optical Chart
The optical chart indicates the nominal target spot diameter at
any given distance from the sensing head and assumes 90%
energy. (See Figure 1).
PREPARATION STAGE
Ensure that the sensor is focused on the target only.
Distance and Spot Size
The size of the area (spot size) to be measured determines the
distance between the sensor and the target. The spot size must
not be larger than the target. The sensor should be mounted so
that the measured spot size is smaller than the target. (See
Figure 2).
Dwyer Series ILA non-contact sensors, measure
temperatures from 32 to 932°F (0 to 500°C) and provide a linear
4 to 20 mA, 0 to 50 mVDC or thermocouple output. The 2-wire
signal is compatible with almost any indicator, controller,
recorder, data logger, etc., without the need for special
interfacing or signal conditioning. They are suitable for most
materials such as food, paper, textiles, plastics, leather, tobacco,
pharmaceuticals, chemicals, rubber, coal, and asphalt.
Sensor
BEST
GOOD
INCORRECT
Background
Target greater
than spot size
Target equal to
spot size
Target smaller
than spot size
FIGURE 2
Distance: Sensor to object (inches)
Distance: Sensor to object (mm)
11.9
45.2
78.6
0.5
1.8
3.1
0 19.7 39.4
0 500 1000
S
po
t D
ia
.
(in
ch
es
)
S
po
t D
ia
.
(m
m
)
D:S 15:1
FIGURE 1
Atmospheric Quality
Smoke fumes or dust can contaminate the lens and cause errors
in temperature measurement.
Electrical Interference
To minimize electromagnetic interference or “noise” the sensor
should be mounted away from motors and generators.