7
Warm-up
When power is applied to the detector, it enters a one (1) minute warm-up mode. The output current will be
0.8 mA during the warm up time period. At the end of the warm-up period with no faults present, the
detector automatically enters the normal operating mode (4 mA). If a fault is present after warm-up, the
detector current output will indicate a fault. See the following chart for fault code status.
Normal
In the normal operating mode, the 4 to 20 mA signal levels correspond to the detected gas concentration.
The detector continuously checks for system faults or initiation of calibration and automatically changes to
the appropriate mode.
The 4 to 20 mA output of the SEC MILLENIUM is a non-isolated current source.
Current Output and Corresponding Status
Once the fault is cleared the SEC MILLENIUM will atomatically resume normal operation.
Current Output
Status
.
0-20 mA
Normal measuring mode
0.0 mA
Unit Fault
0.2 mA
Reference channel fault
0.4 mA
Analytical channel fault
0.8 mA
Unit warm up
1.0 mA
Optics fault
1.2 mA
Zero drift fault
1.6 mA
Calibration fault
2.0 mA
Unit spanning
2.2 mA
Unit zeroing
4.0 mA
Zero gas level
20.0 mA
Full scale
20.1- 23 mA Over-range (> 100% full scale)
Содержание SEC 3000
Страница 15: ...Doc 1460003 Rev A Operation Manual SEC 3000 Electro Chemical Gas Sensor Page 12 of 13 ...
Страница 54: ...Part Number 3100 EXP MANUAL REV 11 20141007 FIGURE 4 SEC 3100 SEC Millenium Mounting ...
Страница 55: ...Part Number 3100 EXP MANUAL REV 11 20141007 FIGURE 5 SEC 3100 SEC 3000 Mounting ...
Страница 56: ...TB 1 J1 TB 2 J2 1 6 1 6 1 4 1 6 TB 5 J5 TB 6 J6 ...
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Страница 448: ...10 VII Drawing Section Figure Title Figure 1 Wiring Diagram SEC MILLENIUM Figure 2 SEC Sensor Separation Kit ...
Страница 473: ...10 VII Drawing Section Figure Title Figure 1 Wiring Diagram SEC MILLENIUM Figure 2 SEC Sensor Separation Kit ...