4210 Flow Meter
Section 1 Introduction
1-10
Isco FLOWLINK Data Storage and Retrieval System
Memory Partitions Maximum of 6 user-defined memory partitions for level or event storage
Data Storage Rate for data storage user-selected in 1, 2, 5, 10, 15, 30, 60, or 120 minute intervals.
Baud Rates Serial connection - 300, 1200, 2400, 4800, or 9600 baud
Serial connection with the optional internal modem - 2400 baud
Storage 80,000 bytes, apportioned per reading as follows: flow = 4 bytes, level = 2 bytes,
sample = 4 bytes, pH or D. O. = 1 byte)
Level Data Level readings are stored as a 16-bit number representing
1
/10,000 meter.
(0.0394 inch); effective range is 0–65279 meters.
Ultrasonic Level Sensor
Dimensions 4
7
/8" diameter × 8
1
⁄2" long (12.2 × 21.6 cm)
Weight 3 lb, (including amplifier box and cable) (1.4 kg)
Body Material Xenoy
®
6120 housing, stainless steel
Cable Length 25 ft. (7.6 m). PVC Jacket
Operating Temperature –13° to 140°F (–25° to 60°C)
Storage Temperature –40°to 158°F (–40° to 70°C)
Level Measurement Specifications
Measurement Range Minimum: 2 ft. (0.3 m) from sensor to liquid surface
Maximum 12 ft. (3.6 m) from sensor to liquid at minimum level
Measurement Accuracy 2 ft. (0.6 m) or less: ±0.02 ft. at 72°F (22°C).
2 to 12 ft. (0.6-3.6 m): ±0.03 ft. at 72°F (22°C)
Maximum Temperature
Error Over Compensated
Temperature Range
±0.000085 × D per degree C (Where “D” is the distance from the
±0.000047 × D per degree F transducer to the liquid surface.)
Beam Angle 8 degrees.
Level Resolution 0.004 ft. (0.12 cm).
Optional Extension cable of 25 ft. (7.6 m) Custom lengths available by special order. Maxi-
mum distance is 1,000 ft. (304.8 m) if unit is AC-powered; 250 ft. (76.2 m) if unit is
battery-powered.
Miscellaneous
Flow Rate Calculations The flow meter creates a table of level-versus-flow rate from program selections; this
table divides the level span into 256 equally spaced level increments. Each level
increment corresponds to a specific flow rate. During data collection, if the measured
level falls between two table values, the flow meter will perform a linear interpolation
to calculate the flow rate value.
Xenoy® - Registered trademark of G.E. Plastics, a division of General Electric.
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