Teledyne 4020 – Hydrocarbon analyzer (special version for automatic background gas switching) - Manual (Page 36)

Installation Model 4020
Teledyne Analytical Instruments 18
Figure 3-2: Equipment Interface Connector Pin Arrangement
3.3.3.4 A NALOG O UTPUT
There are four DC output signal pins—two pins per output. For
polarity, see Table 3-1. The outputs are:
0–1 VDC % of Range: Voltage rises linearly with increasing
concentration, from 0 V at 0
concentration to 1 V at full scale. (Full
scale = 100% of programmable range.)
0–1 VDC Range ID: 0.20 V = Low Range
0.5 V = Medium Range
0.80 V = High Range
4–20 mA DC % Range: Current increases linearly with
concentration , from 4 mA at 0
concentration to 20 mA at full scale.
(Full scale = 100% of programmable
range.)
4–20 mA dc Range ID: 6.8 mA = Range 1
12.0 mA = Range 2
16.8 mA = Range 3
Table 3-1: Analog Output Connections
Pin Function
3 + Range ID, 4-20 mA, floating
4 – Range ID, 4-20 mA, floating
5 + % Range, 4-20 mA, floating
6 – % Range, 4-20 mA, floating
8 + Range ID, 0-1 VDC