RayTek MARATHON MM SERIES - Emissivity Setting

Operation
Marathon MM Rev. D7 Jul 2017 47
7.4.3.3 Emissivity Setting
The external input (trigger input) can be configured to accept an analog voltage signal (0 to 5 VDC) to
provide real time emissivity setting. This function is enabled through the DataTemp Multidrop
Software, see the software help for set up instructions, or refer to the required command protocol in
section 10.8.5 Emissivity Setting, page 74. The following table shows the relationship between input
voltage and emissivity.
U in V
0.00
0.24
0.48
0.71
0.95
1.19
1.43
1.67
1.90
2.14
2.38
2.62
2.86
3.10
3.33
3.57
3.81
4.05
4.29
4.52
4.76
5.00
Emissivity
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
Table 5: Ratio between Analog Input Voltage and Emissivity
Figure 26: Adjustment of Emissivity at External Input (Example)
To the external input (trigger
input) of the sensor
position “product 1”
position “product 2”
3.1 V (ε=0.75)
1.9 V (ε=0.5)