ACR Electronics SmartReader Plus Bedienungsanleitung PDF herunterladen (Seite 60)

SmartReader Data Loggers

Connections: Removable screw-type terminal strip

Specifications are subject to change without notice.

1.9.8 Applications

The SmartReader 7 Logger can be used for a wide variety of data recording applications. You

may decide to use it as a direct replacement for your existing analog voltage or current loop

strip chart recorders. That way you will be able to easily get valuable data into your computer,

instead of always being restricted to just the charts.

You may also want to set up your own self-contained logging stations for monitoring

commercially available transducers and transmitters (for example: temperature, pressure,

humidity, wind speed, flow, level, pH, position, and more). That way you will be able to easily

set up your SmartReader 7 in the field with a minimum of trouble.

Application Example

Here is an example to guide you in your own SmartReader 7 applications:

Problem: You want to monitor static pressure in a duct, over a period of about a week, to

determine how a fan is performing in an air conditioning system. The location you want to

monitor is not very accessible and there is no nearby power supply. It is estimated that the

pressure in the system will vary as much as 3 to 4" W.C. (.75-1.00 kPa).

Solution: You decide a self-contained logging station is the best solution. For the pressure

measurements you choose a Model 264 0 to 5" (0 to 1.25 kPa) unidirectional transducer from

Setra Systems. The 264 requires an unregulated excitation of 12 to 28 volts DC to produce a

linear 0 to 5 volt DC output signal.

Figure 7-11 illustrates the setup of this logging station using two 9 volt batteries wired in series

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ACR Electronics SmartReader Plus Bedienungsanleitung Seite 60