Global Water
800-876-1172
• globalw.com
WL550
OIL WATER INTERFACE METERS
Global Water
Instrumentation, Inc.
151 Graham Road
P.O. Box 9010
College Station, TX 77842-9010
T: 800-876-1172
Int’l: (979) 690-5560, Fax: (979) 690-0440
E-mail : globalw@globalw.com
Operating Manual
Covers Models: AHA500, AHB500, A HC500, AHD500, AHE500, AHF500, AHG500,
AHK500, AHL500, AHM500, AHN500, AHO500, AHP500, AHQ500
Copyright Global Water Instrumentation, Inc. 2012
02-083
Publication Number 39350712
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Global Water
800-876-1172
• globalw.com
Congratulations on your purchase of a Global Water WL500, oil water
interface meter. This instrument has been quality tested and approved for
providing accurate and reliable measurements. We are confident that you
will find the meter to be a valuable asset to your applications. Should you
require assistance, our technical staff will be happy to help.
Table of Contents:
I. Quick Start Guide ▫ ▫ ▫ ▫ ▫ 3
II. Principle of Operation ▫ ▫ ▫ ▫ 4
III. Battery Installation & First-Time Use ▫ ▫ ▫ 4
IV. Basic Reel Features ▫ ▫ ▫ ▫ ▫ ▫ 5
V. Operating the unit in the fiel d ▫ ▫ ▫ ▫ 6
VI. Troubleshooting ▫ ▫ ▫ ▫ ▫ ▫ 8
VII. Customer Support ▫ ▫ ▫ ▫ ▫ ▫ 9
VIII. Technical Specifications ▫ ▫ ▫ ▫ ▫ 10
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Global Water
800-876-1172
• globalw.com
I. Quick Start Guide
1. To turn the unit on, push the red start butt on once brief ly . Note that the unit
will make a short lived beep when it is turned on. P us hing the start button
briefly (less than 4 seconds*) a second time will pow er down the unit, at which
time it will make a short pulsing sound. It w ill also make this sound when it
turns off automatically aft er 10 minutes.
2. When the unit is turned on and the battery is low but will s till allow for reliable
operation, the buzzer will make a longer pulsing tone, but will then resume
normal operation.
3. If the battery is too low for the unit to function properly it will power itself down
right after being turned on or it will make a continuous low volume tone until
the battery is removed.
4. There are two adjustments on the cir c uit board m ar k ed Water and Oil. They
are sealed to keep out moisture and should not be c hanged w ithout calling for
technical support.
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