Installation

5.4.2 Emissivity Setting (digital controlled)

The sensor’s 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 (5 V)

A non‐wired input is considered as “High”!

Table entry

Emissivity

FTC3

FTC2

FTC1

 

(Examples)

 

 

 

0

1.100

0

0

0

1

0.500

0

0

1

2

0.600

0

1

0

3

0.700

0

1

1

4

0.800

1

0

0

5

0.970

1

0

1

6

1.000

1

1

0

7

0.950

1

1

1

Figure 15: Digital Selection of Emissivity with FTC Inputs

The values in the table can only be changed by means of the DataTemp MultiDrop software.

MI

25

Page 33
Image 33
RayTek MI Miniature Infrared Sensor Emissivity Setting digital controlled, Digital Selection of Emissivity with FTC Inputs