Ultraflo U3000/U4000

  • Wide Diameter Range
    13mm - 5000mm
  • Measurement Technique
    Transit time For “clean” liquid monitoring
  • Data Logger
    Built in data logger with 198,000 data points (U4000 only)
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The U3000/U4000 is a microprocessor controlled instrument operated through a menu system using an inbuilt LCD display and keypad. It can be used to display the instantaneous fluid flow rate or velocity, together with totalised volumes. The instrument can also provide an isolated current output, or variable pulse output, proportional to the measured flow rate which can be scaled to suit a particular flow range. Finally, two isolated alarm outputs are provided which can be configured in a number of ways. For example, to operate when the flow rate exceeds a specified maximum or minimum limit.

In addition, the U4000 can function as a data logger. When operating in this mode the logged data can be output to the instrument's memory, to a PC (via the RS232 or USB serial interfaces), or simultaneously to both memory and PC. When logging to memory only, the logged data can be downloaded to the PC at a later time. Both the flow rate and +/- Totals can be logged, with up to 200k logging events stored internally

General Specification
Measuring Technique Transit time
Flow velocity range (bi-directional) 

0.1 to 10 m/s

Operating temperature -20°C to +50°C.
Turn down ratio 200:1
Flow measurement accuracy ±2% of flow reading for flow rate >0.2m/s and Pipe OD >75mm.
±3% of flow reading for flow rate >0.2m/s and Pipe OD in range 13mm - 75mm.
±6% of flow reading for flow rate < 0.2m/s
Repeatability ±0.5% of measured value or ±0.02m/s whichever is the greater
Pipe  Diameter Range Min 13mm; Max 5000mm (with 'D’ sensor set).

4-20mA and Pulse output

Power input 12-24V AC or DC
Display LCD: 2 line x 16 characters
Keypad Format 4 key tactile feedback membrane keypad

Safety: BS EN 61010

EMC: BS EN 61326 - 1:2006, BS EN61326-2-3:2006

Environmental: BS EN 60068-1:1995, BS EN 60068-2-1:2007, BS EN 60068-2-2:2007

Water networks 

Ultrapure water

Chemicals & Acids

Hydraulic oils