ISCO 4230 - Technical Specifications for FLOWLINK and Bubbler

4230 Flow Meter
Section 1 Introduction
1-7
Printer Recording Span
Chart Resolution
Display Resolution
User-selected from
3
/4 ft. (3.6 cm) to over 30 ft. (9.1 m) with multiple over-ranges
1
/240 of selected recording span
0.001 ft. (0.3 mm)
Paper 4.5" wide × 65 ft. (11.4 cm × 19.8 m) plain white paper, replaceable
Plotter Reliability 2.5 million lines MCBF (mean cycles before failure)
Reports Printed Program selections, interval activity reports, flow meter history
Printer Recording Modes Level over time, flow rate over time; includes totalized flow, sampler events, rainfall,
temperature, velocity, pH (or) D.O.
Plotted Linear Data 3 different linear plots can be printed at the same time
Table 1-2 4230 Technical Specifications (Continued)
Table 1-3 Technical Specifications for FLOWLINK and Bubbler
Isco FLOWLINK Data Storage and Retrieval System
Memory Partitions Maximum of 6 user-defined memory partitions for level or event storage
Timing Interval Timing for level 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 Date Level readings are stored as a 16-bit number representing
1
/10,000 meter
(0.0394 inch); effective range is 0–65279 meters
Bubbler Specifications
Measurement Range 0.01 ft. (3 mm) to 10.0 ft. (3.1 m)
Maximum Depth 21.0 ft. (6.4 m)
Measurement Accuracy
(22°C, 1 bubble per second)
Long-term calibration change
Temperature effects on level mea-
surement accuracy
Level change of 0.01 to 1.0 ft. (0.006 to 1.5 m) ±0.005 ft. (0.003 m)
Level change of 0.1 to 5.0 ft. (0.03 to 1.6 m) ±0.010 ft. (0.006 m)
Level change of 0.1 to 10.0 ft. (0.03 to 3.1 m) ±0.035 ft. (0.01 m)
Typically, 0.5% of reading per year
Maximum error (feet) = 0.0003 × Level (in feet) × Temperature
(Deviation from 22°C within compensated range)
Transducer Pressure Safety
Range
Transducer is capable of withstanding maximum air pump outlet pressure without
damage
Standard Bubble Lines 25 ft. (7.6 m) 0.125" (0.32 mm) OD, 0.065" (0.17 cm) ID Teflon
®
50 ft. (15.2 m) 0.250" (0.63 cm) OD, 0.125" (0.32 cm) ID vinyl
Automatic Drift Compensation Zero-corrected to ±0.002 ft. (0.0006 m) at intervals of 2 to 15 minutes. (Interval is
software-controlled.)