Global Water
800-876-1172 • globalw.com
Global Water
Instrumentation, Inc.
11390 Amalgam Way
Gold River, CA 95670
T: 800-876-1172
Int’l: (916) 638-3429, F: (916) 638-3270
Display: EZ100
11/12/04
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Global Water
800-876-1172 • globalw.com
Congratulations on your purchase of the Global Water EZ100
Display. This instrument has been quality tested and approved for
providing accurate and reliable measurements. We are confident
that you will find the EZ100 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. Display Installation
IV. Display Set Up and Use
V. Maintenance
VI. Troubleshooting
VII. Warranty
• • • • • • • 7
VIII. Appendix A: Display Calibration
IX. Appendix B: External Power and Recording Devices
* Copyright Global Water Instrumentation, Inc. 2004
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I. EZ100 Checklist
a. Display
b. EZ100 Manual
c. Two 9V batteries (Inside case)
II. Inspection
a. The EZ100 unit 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
EZ100 was received.
Global Water
800-876-1172 • globalw.com
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III. Display Installation
a. The Display is designed for handheld applications, however there are
four holes in the back of the case that may be used to mount the unit
to a flat surface (screws not included.)
b. If the Display is mounted insure that it is located in an area that is
protected from direct rainfall and immersion in water. The Display is
water resistant, not water proof.
c. See Appendix B for installation of Display with external power source
and/or additional external recording/monitoring device.
IV. Display Set Up and Use
Output Range: +1900 Engineering Units
Input Range: 4-20 mA
Accuracy: +
Operating Voltage: 12-36VDC
Current Draw: Same as sensor output
Warm Up Time: 3 seconds
Operating Temperature: 0° to +60°C
Size of Probe: 4 ¾”x3 1/8”x2 1/8”
Weight: 0.5 lb.
a. If the EZ100 was shipped with a sensor attached, the display was
calibrated for that sensor at Global Water’s factory. Pressing the
button on the front of the EZ100 will display the sensor’s output.
Please read the sensor manual for installation and maintenance
instructions.
Global Water
800-876-1172 • globalw.com
0.1% of full scale
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Two wire sensor attachment
b. Unscrew the four bolts in the cover to access the internal terminal
strip. Disconnect one of the batteries. Orient the unit with the terminal
block at the top, see appendix C. Attach the positive voltage wire to
terminal #1. Attach the signal wire to terminal #2. Reconnect the
battery. See appendix A for Display calibration instructions.
Three wire sensor attachment
c. Unscrew the four bolts in the cover to access the internal terminal
strip. Disconnect one of the batteries. Orient the unit with the terminal
block at the top, see appendix C. Attach the positive voltage wire to
terminal #1. Attach the signal wire to terminal #2. Attach the ground
wire to terminal #4. Reconnect the battery. See appendix A for
Display calibration instructions.
V. Maintenance
Global Water
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Figure 1.
a. Replace the unit’s batteries annually. The Display comes with two 9V
Lithium batteries. To access the batteries, unscrew the four cover
screws and remove the top.
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VI. Trouble Shooting
Issue: Display not reading correctly
a. Verify battery voltage (see maintenance section).
b. Recalibrate sensor to Display using appendix A.
Other issues
c. Call us for tech support: 800-876-1172 or 916-638-3429 (many
problems can be solved over the phone). Fax: 916-638-3270 or Email:
globalw@globalw.com.
Be prepared to describe the problem being experienced including
specific details of the application and installation and any additional
pertinent information.
d. In the event that the equipment needs to be returned to the factory for
any reason, please call to obtain a RMA # (Return Material
Authorization). Do not return items without a RMA # displayed on the
outside of the package.
Include a written statement describing the problems.
Send the package with shipping prepaid to our factory address. Insure
the shipment, as the warranty does not cover damage incurred during
transit.
e. When calling for tech support, please have the following information
ready;
1. Model #.
2. Unit serial number.
3. P.O.# the equipment was purchased on.
4. Global Water’s sales number or the invoice number.
5. Repair instructions and/or specific problems relating to the
product.
Global Water
800-876-1172 • globalw.com
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VII. Warranty
a. Global Water Instrumentation, Inc. warrants that its products are free
from defects in material and workmanship under normal use and
service for a period of one year from date of shipment from factory.
Global Water’s obligations under this warranty are limited to, at Global
Water’s option: (I) replacing or (II) repairing; any products determined
to be defective. In no case shall Global Water’s liability exceed the
products original purchase price. This warranty does not apply to any
equipment that has been repaired or altered, except by Global Water
Instrumentation, Inc., or which has been subject to misuse, negligence
or accident. It is expressly agreed that this warranty will be in lieu of
all warranties of fitness and in lieu of the warranty of merchantability.
b. The warranty begins on the date of the product’s invoice.
Global Water
800-876-1172 • globalw.com
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Global Water
800-876-1172 • globalw.com
VIII. Appendix A: Display Calibration
a. Remove the front cover of the EZ100 to show the rear of the display.
b. The Display must be connected to a 4-20mA sensor or current loop
meter to work properly.
c. Use the following diagram and tables to determine the correct DIP
switch settings for the attached sensor.
Figure 2.
Minimum
Reading
(4mA)
Maximum
Reading
(19/20mA)
0–1200 1200-1999 Off Off Off Off Off
0-600 600-1200 On Off Off Off Off
0-400 400-600 Off Off On Off Off
0-200 200-400 On On On Off Off
0-100 100-200 On On On On Off
d. Determine the highest and lowest reading for the display. This is the
value that will be displayed at the maximum and minimum output
currents of the sensor, Water Level = 0-15 feet, Humidity = 0-100%,
etc. Ignore the decimal point and set DIP Switches 1-5 based on the
above table:
SW1 SW2 SW3 SW4 SW5
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Global Water
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e. Set DIP Switches 6-8 to place the decimal point in the correct position
according to the following table:
Decimal Location SW6 SW7 SW8
9999 Off Off Off
9.999 On Off Off
99.99 Off On Off
999.9 Off Off On
f. Set up the sensor for its minimum output current or put the current
loop meter in “Simulate” mode and set it for the minimum output
current of the sensor that will be connected to the EZ100 (4.000mA,
3.986mA, etc). If using a current loop meter, connect the red lead to
terminal S1 and the black lead to terminal S2 according to Figure 1 on
page 5.
g. While holding down the “Display” button on the front panel of the
meter, adjust R3 until the display reads the correct minimum reading.
h. Set up the sensor for its maximum output current or set the current
loop meter for the output current of the sensor that will be connected to
the EZ100 (19.000mA, 19.064mA, 20.000mA, etc).
i. While holding down the “Display” button, adjust R7 until the display
reads the correct maximum reading.
j. Repeat steps f - i and confirm the display reads the correct low and
high values. Readjust R3 and R7 as necessary until the correct
display is achieved without adjustment.
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Global Water
800-876-1172 • globalw.com
IX. Appendix B: External Power and Recording Devices
a. Use the following instructions to connect an external source that will
allow the display and sensor to be powered continuously:
1. Remove both 9 VDC batteries.
2. Remove the battery leads from terminals T1 and T2 (see
Figure 1 on page 5).
3. Drill a hole in the bottom of the case next to the sensor wire
for a power wire to pass through. Run all external wires
through this hole.
4. Seal any gaps with silicon adhesive.
5. Connect a 12VDC to 36VDC external power source to the
power terminals, positive to T1 and negative to T2 in place of
the battery leads. The display and sensor are now powered
continuously.
b. Follow the diagram below to connect external power and a PLC or
recording/monitoring device.
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