Endress+Hauser SS2000XP, Руководство по эксплуатации

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SS500XP/SS2000XP Gas Analyzer BA02183C
3
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8 Hauser
9. Close and tighten the electronics enclosure cover.
10. To complete the connections, connect the other end of the current
loop wires to a current loop receiver and each external serial cable
to a serial port on your computer.
Changing the 4–20 mA Current Loop Mode
By default, the 4–20 mA current loop output is factory set to source current.
In some instances it may be necessary to change the 4–20 mA current loop
output in the field from source to sink. The work must be performed by
personnel qualified in electronics assembly.
To change the 4–20 mA board from source to sink
1. Disconnect power to the analyzer.
2. Open the electronics enclosure cover. Take care not to disturb the
electrical assembly inside.
3. Locate the 4–20 mA board(s) in the center of the electronics
enclosure, as shown in Figure 1–6 or Figure 1–7.
4. Remove the jumper (JMP1), shown in Figure 3–3, connecting the
center pole to point “A.”
5. For 4–20 mA sink, carefully replace the jumper to connect the center
pole with point “P.”
6. Repeat steps 2 to 4 as necessary for any remaining 4–20 mA boards.
7. Reconnect power to the analyzer. Confirm the 4 mA (min.) and
20 mA (max.) points (see “To scale the current loop signal” in
the Device Parameters manual).
8. Close and tighten the electronics enclosure cover.
Connecting the Gas Lines
Once you have verified that the analyzer is properly wired, you are ready to
connect the sample supply, sample return, and sample bypass (if applicable).
Changing the current loop mode may negate specific hazardous
area certifications. Refer to “Service” on page B - 17.
Hazardous voltage and risk of electric shock . Turn off and
lock out system power before opening the electronics enclosure
and servicing.