Trace Oxygen Analyzer | Installation |
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∙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: 7.2 mA = Low Range
12 mA = Medium Range
16.8 mA = High Range
Table 3-1: Analog Output Connections
Pin Function
3+ Range ID, 4-20 mA, floating
4– Range ID, 4-20 mA, floating
5+ ppm Range, 4-20 mA, floating
6– ppm Range, 4-20 mA, floating
8+ Range ID, 0-1 VDC
23– Range ID, 0-1 V dc, negative ground
24+ ppm Range, 0-1 VDC
7– ppm Range, 0-1 VDC, negative ground
Alarm Relays: The nine alarm-circuit connector pins connect to the internal alarm relay contacts. 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 3-2. 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 latching or non-latching.
∙Can be configured out (defeated).
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Teledyne Analytical Instruments | 19 |
