Teledyne GC-Pro/FID - Gas Chromatograph - Manual (Page 34)

Installation GC-Pro FID
Teledyne Analytical Instruments 20
Table 3-2: Analog Concentration Output—Example
Ppb Voltage Signal Current Signal
Benzene Output (VDC) Output (mA DC)
0 0.0 4.0
10 0.1 5.6
20 0.2 7.2
30 0.3 8.8
40 0.4 10.4
50 0.5 12.0
60 0.6 13.6
70 0.7 15.2
80 0.8 16.8
90 0.9 18.4
100 1.0 20.0
3.3.2.5 A LARM R ELAYS
The nine alarm-circuit connector pins connect to the internal alarm
relay contacts. The pins for the alarm relays are available from the top
interface connector. Each set of three pins provides one set of Form C
relay contacts. Each relay has both normally open and normally closed
contact connections. The contact connections are shown in Table 3-4.
They are capable of switching up to 3 amperes at 250 VAC into a
resistive load. The connectors are:
Threshold Alarm 1:
 Can be configured as high (actuates when
concentration is above threshold), or low (actuates
when concentration is below threshold).
 Can be configured as failsafe or non-failsafe
 Can be configured as non-latching
 Can be configured out (defeated).