Xylem WL400 User Manual

Global Water

800-876-1172 • globalw.com

00-997 10/25/06

Global Water

Instrumentation, Inc.

11390 Amalgam Way

Gold River, CA 95670

T: 800-876-1172

Int’l: (916) 638-3429, F: (916) 638-3270

Water Level Sensor: WL400

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Global Water

800-876-1172 • globalw.com

Congratulations on your purchase of the Global Water WL400 Water Level Sensor. This instrument has been quality tested and approved for providing accurate and reliable measurements. We are confident that you will find the sensor to be a valuable asset for your application. Should you require assistance, our technical staff will be happy to help.

Table of Contents

I. Checklist • • • • • • • Page 3 II. Inspection

III. General Sensor Installation • • • • 4 IV. WL400 Specifications V. Maintenance VI. Troubleshooting VII. Warranty

• • • • • • • 11

VIII. Appendix A: Calibration Procedures IX. Appendix B: 2 Wire Sensor Measurement Diagram

• • • • • • 3

• • • • • 7

• • • • • • 9

• • • 12

• 13

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I. Sensor Checklist

a. Water Level Sensor b. Water Level Sensor Manual

II. Inspection

a. The water Level sensor was carefully inspected and certified by Global

Water’s Quality Assurance Team before shipping. If any damage has occurred during shipping, please notify Global Water Instrumentation, Inc. and file a claim with the carrier involved.

Use the checklist to ensure that everything needed to operate the water Level sensor was received.

Global Water

800-876-1172 • globalw.com

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III. Sensor Installation

General

a. Water Level sensors have many applications and therefore many

installation options. All the sensors are fully submersible and may be suspended by their waterproof cables in the water to be monitored.

b. Do not install the water Level sensor in applications that contain

solvents. Over time, many solvents can deteriorate the cable and the sensing element.

c. Install the water Level sensor so that it is easily accessible for

calibration purposes. Take care not to kink the cable. This will close the vent tube that the sensor uses to compensate for barometric changes. Also be aware that the sensor may need to removed and reinstalled in the future, so plan ahead!

Global Water

800-876-1172 • globalw.com

d. The sensor will not function correctly if mud, silt, leaves, or other

debris buries it. Install the sensor in a way that will avoid these conditions.

e. All Global Water water level sensors produce a 4-20 mA output signal.

4-20 mA is an industrial standard signal for process control monitoring. Most PLCs (Programmable Logic Controller), RTUs (Remote Telemetry Unit), and data acquisition systems accept this signal directly.

f. The power wire (red wire) must be connected to positive supply

terminal of the data logger or of the battery. The 4-20mA signal wire (black wire) is connected to the data logger’s input terminal. If the sensor is equipped with the optional temperature output circuit, connect the output wire (white wire) to a second input terminal on the logger in the same way as the level output.

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