4220 Flow Meter
Section 5 Options and Accessories
Table 5-5 YSI 600 Probe Specifications (Continued)
Accuracy | ± 0.4° C |
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Resolution | 0.1° C |
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Dissolved Oxygen % Saturation |
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Sensor Type | Rapid Pulse - Polarographic |
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Range | 0 to 200 % Air Saturation |
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Accuracy | ± 2% Air Saturation |
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Resolution | 0.1% Air Saturation |
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Dissolved Oxygen mg/L |
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Sensor Type | Calculated from % air saturation, temperature, |
| and salinity |
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Range | 0 to 20 mg./L |
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Accuracy | ± 0.2 mg./L |
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Resolution | 0.01 mg./L |
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pH |
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Sensor Type | Glass Combination Electrode |
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Range | 2 to 14 pH Units |
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Accuracy | ± 0.2 Units |
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Resolution | 0.01 Units |
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Conductivity* |
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Sensor Type | |
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Range | 0 to 100 mS/cm |
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Accuracy | ± (1% of reading + 0.001 mS/cm) |
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Resolution | 0.01 mS/cm or 1 μS/cm |
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*Specific conductance (conductivity corrected to 25° C), resistivity, and total dis- solved solids measurements are also provided. These values are automatically calcu- lated from conductivity according to algorithms found in Standard Methods for the Examination of Water and Wastewater (ed. 1989).
Salinity |
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Sensor Type | Calculated from conductivity and temperature |
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Range | 0 to 70 ppt |
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Accuracy | ± 0.2 ppt |
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Resolution | 0.1 ppt |
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5.13Mechanical Totalizer A mechanical totalizer is available for the 4220 that consists of a
and the maximum flow of the primary device used. The totalizer is internally set to advance at 1⁄100 of the rate of the display totalizer. Consequently, you must multiply the number shown on the mechanical totalizer by 100 to determine the actual value for total flow.
