Inficon T-Guard Leak Detection Sensor Manual do Utilizador descarregar pdf (Página 54)

52 Operation

jina85e 5.fm Technical Handbook(1112)

5.6 Configuring analog output

You can configure the analog output in the menu screen

Main Menu

→

Settings

→

Interfaces

in Analog Output and Analog Scale

• In the setting "LR Exponent", the exponent results from the voltage as follows:

Exponent = (voltage x 2) -14

For example: A voltage of 4.5 V results in an exponent of (4.5 x 2) - 14 = -5.

• In the setting "LR Log.", the leak rate is calculated as follows:

Leak rate = final value x (10^((U - 10)/(volts/decade)) )

For example: With a final value of 10

-1

mbar l/s and 2 V per decade, a voltage of 3.7

V results in a leak rate of 10

-1

mbar l/s x 10^((3.7-10)/2) = 10

-1

mbar l/s x 10

-3,15

-1

mbar l/s x 7,08x10

-4

= 7,08x10

-5

mbar l/s.

For "Current Log.", it is similar for current instead of leak rate.

Fig. 6-14 Configuration of analog outputs.

Fig. 6-15 Configuration of the scale of the analog outputs.

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