Cameron NUFLO MC-III EXP, User Manual

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10
Section 1 MC-III™ EXP Flow Analyzer
Important: The USB communications adapter is approved by CSA for use in hazardous areas. The
CSA-approved model is Part No. 2295524-01. The adapter kit, which includes an installa-
tion CD, is Part No. 2295634-01.
RS-485 IS Barrier (CSA-Approved Units Only)
The RS-485 output of a CSA-approved MC-III is approved for intrinsically safe installations. An intrinsically
safe barrier assembly with a conduit seal enables the RS-485 output to be used as an intrinsically safe output.
In such installations, only the turbine flowmeter input may be used. See
Figure 2.18, page 28
, for an IS barrier
assembly wiring diagram.
Commonly Used Functions
While the functions of the MC-III EXP are too numerous to mention, some of the most commonly used
functions are detailed in this section. They include:
• reading the rate and accumulated total
• saving totals to memory
• resetting the total
• viewing daily and hourly logs
•
saving and uploading configuration files
• exporting log data to spreadsheet
• saving log data in a report
Reading Totals
Current totals can be viewed from the LCD on the front of the MC-III EXP or from the interface software
(MC-III Main screen). The software calculates the flow total and updates the LCD display every 4 seconds, by
default. The user can adjust the calculation period with the interface software. See
Calculation Period, page 61
,
for more information.
Saving Totals to Memory
Hourly and daily totals are automatically saved to nonvolatile memory. A user may save an accumulated total
at any time by opening the enclosure and pressing ENTER (SAVE) on the keypad. In the event of a power
failure, the last saved total will be displayed on the LCD when power is restored. See also
Explosion-Proof
Reset/Control Switch, page 9
.
Note: Always save the accumulated total before replacing batteries.
Resetting the Total
Totals can be reset to zero using the keypad, the interface software, an explosion-proof switch mounted in the
top of the enclosure (if equipped), or a pulse from an external device.
•
To reset the total with the keypad, press LEFT ARROW (LOG) and ENTER (SAVE) keys simultaneously.
• To reset the total with the interface software, double-click the NuFlo MC-III icon on the computer desk-
top and wait for the software to connect to the instrument; then select MC-III Main from the Device
Autorun Options screen, and click on the “Reset Flow Total” button in the lower right corner of the Main
screen.