INFICON LDS3000 Modular Leak Detector - Manual (Page 22)

22 Operation
6.2.1 Factory layout
Analog output 1: Leak rate mantissa
Analog output 2: Leak rate exponent
6.2.2 Possible layouts
Off
The analog outputs are disabled (output voltage = 0 V).
Pressure p1 / Pressure p2
1 ... 10 V; 0.5 V / decade; 1 V = 1 x 10 -3 mbar
Leak rate mantissa
1 ... 10 V; linear; in used unit
Information Useful only if the other analog output is assigned “Leak rate exponent”.
Leak rate exponent
1 ... 10 V; 0.5 V / decade; step function; 1 V = 1 x 10 -12 ; in used unit
Information Useful only if the other analog output is assigned “Leak rate mantissa”
or “Leak rate ma. hys.”.
Leak rate linear
x ... 10 V; linear; in used unit
The upper limit (= 10 V) is set via the parameter “Upper limit exponent”.
Leak rate log.
x ... 10 V; logarithmic; in used unit
The upper limit (= 10 V) and the scale (V / decades) are set via the parameters
“Upper limit exponent” and “Scale for leak rate”.
For example:
Upper limit set to 10
-5 mbar·l/s (= 10 V).
Scale set to 5 V / decade.
Lower limit is 10
-3
mbar·l/s (= 0 V).