PQ-8P, PQ-8S

Next, determine the approximate maximum height and width of the chart. In the example, 40 was the expected maximum number of calls. We chose to represent 10 calls by one inch, resulting in a total maximum height of four inches (not including the title and subtitle.) Similarly, each day was represented by one inch, resulting in a total maximum width of five inches (not including the space needed for the label “WEEKDAY”).

4.If the chart is being printed on a black-and-white PCL printer, the order in which these elements are created is irrelevant. However, if you are printing on a PCL color printer, the lines of the last element will always overlay (and cover) the element previously printed. In the example, the elements creating the x- and y-axes should be entered last when printing on

a PCL color printer.

5.Create the separate IOGL elements based on the order determined in Step 4. In the example, the bar charts were created first. Recall the IOGL formula for the bar chart and the preceding shading/color command string:

¬GS<# of values>;<color 1>;<% shading 1>;<color 2>;<% shading 2>;...

¬GH<line width>;<x start>;<y start>;<x increment>;<y increment>;<bar width>;<# of entries>;<value 1>;<value 2>; ...

The bar chart shown in Figure 6-16was created using the following parameters:

Bar Chart Boyd

Shading/Color: Boyd’s calls were plotted for each day of the business week, so the number of values is five. Since we printed to a black-and- white laser printer, the color parameters were irrelevant. The shading was set to 10%.

Bar Chart (Histogram): The line width was set to 1 mm. The x;y-start parameters defined the bottom left corner of the bar which is identical with the origin of the chart. Remember that the origin was one inch from the left margin, and 10 inches from the top margin of the printable area. The resulting values were 300 (=1 inch x 300/inch) for <x start> and 3000 (= 10 inches x 300/inch) for <y start.>.

The bar representing Boyd’s calls for Tuesday was to be printed one inch to the right of Monday’s bar. The resulting <x increment> was 300 (= 1 inch x 300/inch). Since the maximum height of a bar was specified at four inches, the resulting value for <y increment> was 30 (= 4 inches/40 max. calls x 300/inch).

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PQ-8P, PQ-8S specifications

The Black Box PQ-8S and PQ-8P are advanced power quality analyzers designed for professionals seeking to monitor, analyze, and improve the electrical efficiency of their systems. These devices stand out in the market due to their robust features, sophisticated technology, and user-friendly interface, making them essential tools for electrical engineers and facility managers.

One of the standout features of the PQ-8S and PQ-8P is their ability to conduct precise power quality monitoring. Both models are equipped with high-resolution sampling rates, allowing for accurate capture of transient events and fluctuations in power quality. This capability is crucial for diagnosing issues such as voltage sags, swells, interruptions, and harmonics, which can lead to equipment malfunction or failure if left unchecked.

The PQ-8S is tailored for three-phase systems, making it ideal for industrial applications that require comprehensive analysis of three-phase power flows. Meanwhile, the PQ-8P, designed for single-phase applications, is particularly useful in residential or light commercial settings. Each model features an intuitive touchscreen interface, enabling users to navigate through data and settings effortlessly.

Data logging and extensive reporting are central to both models. They can store multiple parameters, such as voltage, current, and frequency, for prolonged periods, which assists in trend analysis and long-term monitoring. The onboard memory capacity allows users to access historical data for thorough evaluations and audits without requiring constant device connection.

In addition to their analytical prowess, the PQ-8S and PQ-8P emphasize safety and compliance. Both devices are designed with safety features that adhere to international standards, ensuring reliable performance in various environments. Their rugged design makes them suitable for both fieldwork and permanent installations, as they can withstand harsh conditions.

Wireless connectivity options enhance their usability, allowing for remote monitoring and real-time analysis from any location. This feature ensures that issues can be addressed promptly, leading to improved operational efficiency and reduced downtime.

In conclusion, the Black Box PQ-8S and PQ-8P power quality analyzers offer an impressive combination of features, advanced technologies, and practical characteristics. Their design and functionality make them indispensable tools for anyone looking to maintain optimal power quality in their electrical systems, thus ensuring reliability and efficiency in an increasingly electrified world.
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