LumaSense Technologies IS 310 - Manual (Page 12)

IS 310 / IGA 310 Manual Controls and Installation 12
3.1.2 Calculation of the measuring temperature from current output
IS 310 MB 18 Temp. [°C] = 71.875 current [mA] + 362.5
IS 310 MB 23 Temp. [°C] = 93.750 current [mA] + 425
IS 310 MB 25 Temp. [°C] = 87.500 current [mA] + 750
IGA 310 MB 13L Temp. [°C] = 62.500 current [mA] + 50
IGA 310 MB 15 Temp. [°C] = 62.500 current [mA] + 250
3.2 LED targeting light
The pyrometers are equipped with an LED targeting light for aiming onto the measuring object.
The center of the light marks the center of the spot. For use of this targeting light, a separate
power supply is necessary with 5 ... 30 V DC and a current of I 30 mA.
Measuring is possible while the LED targeting light is on. We recommend using a low supply
voltage to keep the thermal loading of the pyrometer small.
3.3 Optics
The pyrometers are equipped ex works with one of the following optics. These optics focus to a
certain distance, i.e. in these distances each optics achieves its smallest spot size in relation to
the measuring distance. The spot size will change in any other distance (shorter or longer).
Please note that the measuring object must be as least as big as the spot size.
The following drawing and table shows the size of the spots in mm in relation to the measuring
distance. Values between the mentioned data can be calculated by interpolation. The spot size
for measuring distance 0 is the aperture diameter of the optics.
Type D a M a
1
M
1
a
2
M
2
IS 310
(MB 18)
5.2
250
1.8 500 8.8 1000 23
(MB 23+25) 1 500 7.2 1000 20
(MB 18)
600
4 1000 10.1 2000 26
(MB 23+25) 2 1000 6.8 2000 20
(MB 18)
1400
9 2000 15.1 3000 25
(MB 23+25) 4.5 2000 8.7 3000 16
IGA 310 9
250 2 500 13 1000 35
600 4.5 1000 13.5 2000 36
1400 9 2000 16.8 3000 30
Spot size
Measuring distance
D
a
a
a
2
M
2
M
1
M