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Overall
- Multiplexer is a device to extend data-logging channels to make single data-logger can log many sensors. Multiplexer logs data by switching operations of mechanical relays.
- With using multiplexer, additional input channels and controlling ports of the data-logger are unnecessary.
- Maximum channels able to added by MUX1632 depends on sensor type. In case of identical types of sensors, MUX1632 has a extendability as following :
- 32 single-ended or differential sensors that required 2 wires.
(e.g. half bridges)
- 16 single-ended or differential sensors that required 4 wires.
(e.g. full bridges)
- 32 vibrating wire sensors or 16 vibrating wire sensors including temperature signal.
- 48 half-bridge measuring instruments, etc.
Summary
- Datalogger operates multiplexer by its reset (RST) channel. Multiplexer idles as deactivation below 0.9Vdc signal and activating within 3.5 to 16Vdc continuous signal.
- During clock pulse input to the multiplexer on activation mode, terminals of COM and each channels are connected gradually from A to D at 4 wires 16 channels mode. And from AB to CD at 2 wires 32 channels mode.
- Other wiring connections and programming for data-logging are same as Campbell Scientific’s.
Applications
- Expansion of various sensor collection channels in civil engineering, safety, and maintenance measurement.
- Expansion of data collection channels in environmental measurement such as weather observation, water level, and water quality measurement.
- For channel expansion and cost reduction of other compatible data loggers.
Notes
- Check wiring connections before use.
- To stable data logging, room temperature (steady temperature) and low humidity environments are recommended.
- In case of operating in low voltage or high temperature environments may cause degradation of relay performance and it causes delay of data logging.
- In case of using nonstandard power source may cause damages to the product.
- 12 months warranty is provided after released. Warranty provided only in case of using for designed purpose correctly.
- Specifications, design and components can be changed without prior notice to improve its performances.
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