E Missivity ( Digital ) - RayTek MI3 Operating Instructions Manual

7.2 Emissivity (digital)
The box electronics contains a table with 8 pre-installed settings for emissivity. To activate these
emissivity settings, you need to have the inputs FTC1, FTC2, and FTC3 connected. According to the
voltage level on the FTC inputs, one of the table entries will be activated.
0 = Low signal (0 V)
1 = High signal (from 5 V to V
A non-wired input is considered as not defined!
The values in the table cannot be changed through the control panel.
7.3 Ambient Temperature Compensation
MI3
info@Raytek-Direct.ca
+ 5 VDC
R1 = 200 Ω
R2 = 500 Ω
R3 = 300 Ω
Figure 25: Adjustment of Emissivity at FTC Input (Example)
Function: emissivity (digital control)
Signal: digital low/high
Terminal: FTC1-3, GND
)
DC
Table entry Emissivity
0
1
2
3
4
5
6
7
Figure 26: Digital Selection of Emissivity with FTC Inputs
Function: Ambient Temperature Compensation
Signal: 0 to 5 V
DC
Terminal:
FTC2, GND
"product 1"
4.0 V (ε=0.9)
1.5 V (ε=0.4)
"product 2"
FTC3 FTC2 FTC1
(Examples)
1.100 0 0
0.500 0 0
0.600 0 1
0.700 0 1
0.800 1 0
0.970 1 0
1.000 1 1
0.950 1 1
Rev. F1 05/2013
Inputs
To the FTC input
of the box
0
1
0
1
0
1
0
1
1.800.868.7495
41