Specifications – YSI 55 User Manual
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2. Specifications
Probe Operating Environment
Medium: fresh, sea, or polluted water
Temperature: -5 to +45
o
C
Depth: 0 to 12, 0 to 25 or 0 to 50 feet (depending on cable length)
Meter Ambient Operating/Storage Temperature: -10 to +50
o
C
Material: ABS, Stainless Steel, Acrylic, and other materials.
Dimensions:
Height:
9.5
inches
(24.13
cm)
Thickness:
2.2
inches
(5.6
cm)
Width:
3.5 inches max.
( 8.89 cm)
Weight:
1.7 pounds
( 0.77 kg)
Power: 9 VDC - 6 AA-size Alkaline Batteries (included)
Approximately 100 hours operation from each new set of batteries
Water Tightness: Meets or exceeds IP65 standards
Extensive testing of the YSI Model 55 suggests the following typical performance:
Temperature
Sensor Type................Thermistor
Range..........................-5 to +45
o
C
Accuracy ....................± 0.2
o
C
Resolution ..................0.1
o
C
Dissolved Oxygen % Saturation
Sensor Type................Membrane covered polarographic
Range..........................0 to 200 % air saturation
Accuracy ....................± 2 % air saturation
Resolution ..................0.1 % air saturation
Dissolved Oxygen mg/L
Sensor Type................Calculated from % air saturation, temperature and salinity.
Range..........................0 to 20 mg/L
Accuracy ....................± 0.3 mg/L
Resolution ..................0.01 mg/L