Teledyne 4220 installation and operation guide Supply, Power

4220 Flow Meter

Section 3 Installation

Figure 3-2 Power Pack Installed on a Flow Meter

They are both capable of powering the flow meter. The Battery-Backed Power Pack provides 12 VDC at 5 Amperes, and is backed up by a 1.2 Ampere- hour nickel-cadmium battery. This is built in a package the same size as the standard power supply, and is intended for use where short-term power interruptions are frequent but unacceptable for flow meter operation.

Note

The battery in the Battery-Backed Power Supply is of limited capacity. It is intended for short-term backup duty only. With one-fourth of the capacity of a standard battery, it cannot power the flow meter for an extended period of time.

3.2.8Attaching the Power Mount the power supply on top of the flow meter cabinet the

Supply	same way as described for the battery. Secure the power supply
	with the two rubber draw catches pulled over the brackets on the
	ends of the power supply. Attach the short cable with the smaller
	connector to the top connector on the right side of the flow meter
	case. Connect the longer cord with the plug on it to an AC outlet.
	Refer to Power Products Guide for details concerning charging
	the batteries with the power pack.

3.2.9External 12 Volt DC You can also power the flow meter from an external 12 VDC

Power	source, such as an automotive, motorcycle, or marine battery.
	Many people have found that a deep-cycle marine/RV battery is
	particularly well-suited to this application. However, you will
	have to mount batteries of this type externally, as they are too
	large to fit on top of the flow meter.

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