Teledyne 2120XL, Руководство по эксплуатации, Страница: 33 / 85

Trace Nitrogen in Argon Analyzer Installation
Teledyne Analytical Instruments 21
Figure 3-3: Equipment Interface Connector Pin Arrangement
Analog Outputs: 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
nitrogen, from 0 V at 0 ppm to 1 V at
full scale ppm. (Full scale = 100% of
programmable range.)
0–1 VDC Range ID: 0.25 V = Low Range, 0.5 V = Medium
Range, 0.75 V = High Range, 1 V =
100ppm.
4–20 mA DC % Range: Current increases linearly with
increasing nitrogen, from 4 mA at 0
ppm to 20 mA at full scale ppm. (Full
scale = 100% of programmable range.)
4–20 mA dc Range ID: 8 mA = Low Range, 12 mA = Medium
Range, 16 mA = High Range, 20 mA
= 100ppm.
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 V dc
23 – Range ID, 0-1 V dc, negative ground
24 + % Range, 0-1 V dc
7 – % Range, 0-1 V dc, negative ground