Cameron NUFLO MC-III EXP, User Manual

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Section 1 MC-III™ EXP Flow Analyzer
Table 1.1—MC-III EXP Specifications
Inputs
Turbine Meter Input
Configurable sensitivity adjustment via front panel
Sensitivity adjustment range: 20 mV P-P to 40 mV P-P
Frequency range: 0 to 3500 Hz
Remote Reset Input
Optically isolated
3.0 to 30 VDC
Pulse duration > 3 seconds to reset
Explosion-Proof Reset Switch (option)
Press and hold > 3 seconds, then release to reset total
Press and hold < 1 second, then release to view daily log data
Pulse Input
Optically isolated
3.0 to 30 VDC
Frequency range: 0 to 3500 Hz
Outputs
Analog Output
4-20 mA, loop-powered (two-wire)
16-bit resolution
Accuracy: 0.1% of full scale @ 25°C, 50 PPM/°C temperature drift
Loop power: 8.0 to 30 VDC
Zero and full-scale engineering values configurable from front panel
RS-485 Communications
Baud rates: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600 and up
to 115.2K
Volumetric Pulse Output
Solid-state relay
Output rating: 60 mA max. @ 30 VDC, on-state drop = 1.4 VDC @ 50 mA,
0.25 VDC @ 10 mA
Configurable pulse width (duration): 10 to 60,000 ms
Amp & Square (Flowmeter Frequency) Output
Open-drain transistor output of turbine meter input signal
Output rating: 50 mA @ 30 VDC, on-state drop = 0.3 VDC @ 50 mA,
0.1 VDC @ 10 mA
(Analog output and amp & square outputs cannot be used simultaneously.)
Modbus ®
RTU mode Modbus
®
supports 16-bit and 32-bit holding registers. For more
information, see Appendix D, page D-1
.
Enron Modbus
®
Flow log parameters (time stamp, period total, period run time, and supply
voltage) and download method are Enron-compatible.