beautypg.com

Teledyne 2120XL - Trace Nitrogen Analyzer User Manual

Page 33

background image

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
oxygen, 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 oxygen, 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