4230 Flow Meter
Section 1 Introduction
1-2
1.1 Description The 4230 uses the bubbler method of level measurement. The
flow meter is normally used with some type of primary mea-
suring device to measure flow in an open channel. The 4230 has
built-in standard level-to-flow conversions, that cover the vast
majority of open channel flow measurement situations. The 4230
is also capable of calculating flow using the Manning Equation.
Additionally, you can enter a non-standard equation or data
points, that effectively plot a user-derived flow profile for a flow
stream. The 4230 supports the Isco data acquisition, storage, and
retrieval system with the use of optional FLOWLINK software.
The 4230 has enough memory to store over 40,000 data readings.
An optional 4200T Modem, with speech capability, is available to
transmit stored data over standard dial-up telephone lines.
1.2 Compatible
Equipment
The 4230 Flow Meter may be used with the following equipment:
Manufactured by Isco
• 6700 Series Portable and Refrigerated Samplers
• 3700 Series Sequential, Composite and Refrigerated
Samplers
• GLS and Glacier Compact Samplers
• 4-20 mA Output Interface
• Tipping Bucket Rain Gauge
• High-Low Alarm Relay Box
Manufactured by Others
• IBM Personal Computer or compatible clone with Isco
FLOWLINK software
• Laptop Computer with Isco software
• YSI 600 Multi-Parameter Sonde
Optional Equipment and Accessories
• 4200T Modem - Speech-capable, with connector and
cable
• D.O. (dissolved oxygen) and pH parameter probes
• Flow Metering Inserts for round-pipe installations in
sizes of 6", 8", 10", and 12".
• Bubble lines, in lengths of 25 feet (Teflon 0.125" OD,
0.065" ID) and 50 feet (vinyl 0.250" OD, 0.125" ID)
• Stainless steel extension tube for the bubble line (4.0
feet 0.125" OD)
• Isco FLOWLINK® Software for data acquisition,
storage, and management
• Carrier and Mounting rings for mounting the bubble
line outlet in round pipes.
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