Quatech INTERBUS S manual Ffff

The numerical format

All temperature values will be shown in a unit numerical format. If the mode ‘DEFAULT’ is selected each bit corresponds to 0.1°C. The possible numerical range refers to the standardized temperature range of the used sensors. The following table will explain the numerical format on a preset PT100. In the third column the numerical

format for PT1000 (750-461/000-003) is explained.

Temperature °C

850

100

25.5

0.1

0

-0.1

-25.5

-200

Voltage

(Ohm)

>400

390.481

138.506

109.929

100.039

100

99.970

90.389

18.192

<18

Voltage

(Ohm)

1384,998

1099,299

1000,391

1000

999,619

901,929

184,936

Binary Value

0010 0001 0011 0100

0000 0011 1110 1000

0000 0000 1111 1111

0000 0000 0000 0001

0000 0000 0000 0000

1111 1111 1111 1111

1111 1111 0000 0001

1111 1000 0011 0000

1000 0000 0000 0000

Hex.

2134

03E8

00FF

0001

0000

FFFF

FF01

F830

8000

Dec.

8500

1000

255

1

0

-1

-255

-2000

-32767

Table 1

Input￿￿￿￿￿￿￿￿for PT100 750-461, 481 3

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