Teledyne 4220 - Manual (Page 15)

1-1
4220 Flow Meter
Section 1 Introduction
This section provides a general introduction to the 4220 Sub-
merged Probe Flow Meter. It includes a description, an expla-
nation of how the unit operates, and technical specifications.
Manual Organization
This manual provides the information necessary to operate,
maintain, and perform minor service on the 4220. The manual is
organized into five sections:
• Section 1: Introduction, operation, and specifications
• Section 2: Keypad operation and programming for all
4200 series flow meters
• Section 3: Installation and options application-specific to
this flow meter
• Section 4: Installation of the Submerged Probe
• Section 5: Options and Accessories
• Section 6: Maintenance, Service, Troubleshooting, and
Upgrades
Following Section 6 are appendices covering replacement parts,
accessory parts, worksheets, and safety information.
1.1 Description The 4220 uses a submerged probe level sensor to measure level.
The flow meter is normally used with some type of primary mea-
suring device for measuring flow in an open channel. The 4220
has built-in standard level-to-flow conversions that cover the
vast majority of open channel flow measurement situations. You
can also enter a non-standard equation, or sets of data points
that effectively plot a user-derived flow profile for a flow stream.
The 4220 supports the Isco data acquisition, storage, and
retrieval system with optional Flowlink software. Using
Flowlink, the 4220 has enough memory to store 40,000 level
readings. An optional 4200T Modem with speech capability is
available to transmit stored data over standard dial-up tele-
phone lines.
1.2 Compatible
Equipment
The 4220 Flow Meter may be used with the following equipment:
Manufactured by Teledyne Isco
• 3700 Series Sequential, Composite and Refrigerated
Samplers
• 6700 Series Portable and Refrigerated Samplers
• 4-20 mA Output Interface
• 581 Rapid Transfer Device