System and Control Options

6.7Setup System - Setup Mapmode

Mapping involves measuring the exact location of various points along the leak detection cable. This greatly simplifies the use of the Liqui-tect Monitoring System to quickly pinpoint the location of a leak. The Liqui-tect Monitoring System determines the location of a leak by computing its distance along the leak detection cable. By setting off alarms with a damp paper towel or sponge and marking each reading on a map of the floor, you can define various points along the cable for later reference in finding a leak. Up to 254 points can be mapped.

NOTE

You must perform the automatic calibration steps in 6.3.4 - Auto Calibration before mapping can commence. The leak detection cable is 12 in. (30.48cm) to 18 in. (45.72cm) longer than the nominal length, which allows a service loop should the cable need to be replaced. Automatic calibration enables the Liqui-tect system to determine the cable’s exact length.

After the leak detection cable has been laid and properly connected, as described in 3.1 - Connecting Leak Detection Cable Inputs, follow these steps to map the system:

1.Draw a floor plan that shows the routing of the leak detection cable, including any jumpers used (non-sensing cable).

2.Using the LCD on the front panel of the Liqui-tect Monitoring System:

Log In and Choose Setup System

a. From the Main Menu, use the arrows ↑↓ to choose System and Control, then press Enter (see 6.1 - Login for help).

b. Enter your password at the Login screen.

c. From the System and Control Menu, use the arrows ↑↓ to choose Setup System, then press Enter .

Select Setup Mapmode

d.From the Setup System Menu, shown at right, use the arrows ↑↓ to choose Setup Mapmode and press Enter .

e.Use the following instructions to set up the mapping of each zone.

Setup System Menu

SETUP ZN1 ZONE 1 SETUP ZN2 ZONE 2 SETUP ALARM OUTPUTS ↑↓ =NEXT =SELECT

SETUP REALARM DELAY

>SETUP MAPMODE SETUP SYSTEM INFO

Select Zone to Map

Set Up Mapping for Zone 1 or Zone 2

f.Use the arrows ↑↓ to choose a zone—either ZN1 Zone 1 or ZN2 Zone 2—from the Select Zone to Map Menu, and press Enter .

The Liqui-tect Monitoring System is now ready for you to short the cable, as described in steps 3 through 6.

3.Select the first point to be mapped and mark it on the floor map as point “X” (where X represents 1 for the first point, 2 for the second, and so on, up to 254). Determine the exact location of the point by measuring the distance from the panel to the point or otherwise describing its location (for example, “at front of chiller”).

4.Wrap a damp paper towel or sponge around the selected point on the cable to cause a short in the cable and trigger an alarm.

SELECT ZONE TO MAP

>ZN1 ZONE 1 ZN2 ZONE 2

 

↑↓ =NEXT

 

=SELECT

 

 

 

 

 

 

 

 

VIEW LAST

 

MAP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mapping Options

 

MAPPING ZN1

 

ZONE 1

 

CURRENT:

0UA

 

DISTANCE:

----

 

ENTRIES:0

 

ESC=EXIT

 

5.After about 30 seconds, the Liqui-tect panel annunciates a short beep. The LCD displays the computed distance to the leak.

6.Remove the paper towel and dry the cable. In approximately 20 seconds, the Liqui-tect panel annunciates a long beep indicating the short has been removed.

7.Go to the next point and repeat this process (steps 3 through 6) until the entire cable has been mapped. Up to 254 points can be mapped.

When complete, press the ESC key on the LCD to exit mapping mode and return to the previous screen. Table 11 shows the default mapping settings for each zone.

Table 11 Default mapping values

Option

Default setting

 

 

Current

0UA, where UA represents µA or microAmps

 

 

Distance

(none)

 

 

33

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Image 37
Emerson MC68HC16Z1 Setup System Setup Mapmode, Select Setup Mapmode, Select Zone to Map Set Up Mapping for Zone 1 or Zone

MC68HC16Z1 specifications

The Emerson MC68HC16Z1 is a versatile microcontroller that combines power and efficiency, making it an ideal choice for various embedded applications. As part of the Motorola 68HC16 series, the MC68HC16Z1 is designed to deliver robust performance while offering extensive support for both simple and complex tasks. With its 16-bit architecture, this microcontroller is well-equipped to handle a range of functionalities, from industrial control systems to automation processes.

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The MC68HC16Z1 also includes an integrated analog-to-digital converter (ADC) that allows for direct interaction with analog signals. This feature is particularly beneficial in applications that require sensor data acquisition. Additionally, the microcontroller provides various communication interfaces, including serial communication options like UART and SPI, facilitating seamless data transfer between devices.

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Moreover, the microcontroller features an extensive array of I/O ports, making it capable of interfacing with various peripheral devices such as sensors, actuators, and displays. This extensive connectivity enhances its usability in a range of applications, from robotics to automotive systems.

In summary, the Emerson MC68HC16Z1 microcontroller stands out for its balanced blend of performance, low power consumption, and feature-rich design. Its 16-bit architecture, integrated ADC, versatile communication interfaces, and extensive memory options make it a go-to choice for developers looking to create effective and reliable embedded systems. Whether for industrial automation or consumer electronics, the MC68HC16Z1 continues to be a dependable and powerful component in the realm of microcontroller technology.