U3000/U4000 User Manual 1
(Issue 2.0)
1: General Description
1.1 Introduction
This manual describes the operation of the U3000/U4000 flowmeter. The flowmeter is designed to work with
clamp-on transducers to enable the flow of a liquid within a closed pipe to be measured accurately without
needing to insert any mechanical parts through the pipe wall or protrude into the flow system.
Using ultrasonic transit time techniques, the U3000/U4000 is controlled by a micro-processor system which
contains a wide range of data that enables it to be used with pipes having an outside diameter ranging from
13mm up to 2000mm and constructed of almost any material. The instrument will also operate over a wide
range of fluid temperatures.
The basic features of the U3000 and U4000 are identical. However, the standard U4000 can also perform
data logging, has RS232 and USB communications interfaces.
U3000/U4000 standard features:
• Large, easy to read graphic display with backlight.
• Simple to follow dual function keypad.
• Simple ‘Quick Start’ set up procedure.
• Continuous signal monitoring.
• Isolated pulse output.
• Isolated current output (4-20mA, 0-20mA or 0-16mA).
• Password-protected menu operation for secure use.
• Signal diagnostics.
• Multi-function alarm outputs.
• Operates from Mains, 24Va.c. or 24Vd.c.
U4000 additional standard features:
• 98k stored data points.
• Logging of Flows and Volume totals.
• RS232 and USB output.
The U4000 can accommodate a number of options that are not available on the U3000. These include:
• Heat Meter
• MODBUS
• Further options are being developed and will be released during 2010.
Volumetric flow rates are displayed in l/h, l/min, l/sec, gal/min, gal/h, USgals/min, USgals/h, Barrel/h, Barrel/
day, m³/s, m³/min, m³/h. Linear velocity is displayed in metres or feet per second.
When operating in the ‘Flow Reading’ mode the total volumes, both positive and negative, are displayed up to
a maximum 12-digit number.
The flowmeter can be used to measure clean liquids or oils that have less than 3% by volume of particulate
content. Cloudy liquids such as river water and effluent can be measured along with cleaner liquids such as
demineralised water.
Typical U3000/U4000 applications include:
• River water.
• Seawater.
• Potable water.
• Demineralised water.
• Treated water.
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