Portable dissolved oxygen meter

NegotiableUpdate on 01/05

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Nature of the Manufacturer: Producers

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Overview

Product brand: YSI $r $n from the United States Product model: 550A-25CC $r $n Main technical specifications: Portable dissolved oxygen measuring instrument $r $n Order number: MM-31841-00 $r $n Fully waterproof, meets IP67 waterproof level $r $n Can be replaced in the field Dissolved oxygen electrode module $r $n Faster reaction time, lower stirring dependence

Product Details

YSI 550A typePortable dissolved oxygen meter

The YSI 550A adopts a fully waterproof (IP67 waterproof rating) and impact resistant instrument housing, and features an innovative field replaceable dissolved oxygen electrode module. Using YSI's proven polarographic technique and YSI's high-precision temperature sensitive resistor technique, dissolved oxygen and temperature can be measured simultaneously. The new generation of PE cover film provides faster reaction time and lower stirring dependence.

Fully waterproof, compliant with IP67 waterproof rating

Field replaceable dissolved oxygen electrode module

Faster reaction time, lower stirring dependence

Stainless steel probe, sturdy and durable, easier to sink into water

Install stress relievers at both ends of the cable interface to reduce material fatigue at the connection and effectively extend the cable's lifespan

Built in dissolved oxygen calibration room/probe storage room, convenient to carry and maintain the normal working state of the probe

Available with 3.7, 7.5, 15, and 30 meter cables for selection

The measurement range of dissolved oxygen has been expanded to 50 milligrams per liter

Air saturation or milligram/liter calibration mode

2000 hours of ultra long battery life

YSI 550A System Specifications
Technical indicators for measuring parameters
Temperature	measurement range resolution Accuracy	-5 to+45 ℃ 0.1℃ ±0.3℃
dissolved oxygen (% air saturation)	measurement range resolution Accuracy	0 to 500% 0.1% or 1% air saturation (optional) 0 to 200%: ± 2% of the reading or 2% air saturation, whichever is greater; 200 to 500%: ± 6% of reading
dissolved oxygen (milligrams per liter)	measurement range resolution Accuracy	0 to 50 milligrams per liter 0.01 or 0.1 milligrams per liter (optional) 0 to 20 milligrams per liter: 0.3 milligrams per liter or ± 2% of the reading, whichever is greater; 20 to 50 milligrams per liter: ± 6% of the reading
Note: The instrument accuracy specification is the sum of the host and probe

Other technical indicators
working conditions	Water bodies: freshwater, seawater, or sewage; Temperature: -5 to+45 ℃
Dissolved oxygen reaction	Reaching 95% of the final value within 9 seconds
salinity compensation	0 to 70 ppt
Waterproof specifications	IP67 waterproof rating
power supply	4 No. 2 alkaline batteries (25 ℃, over 2000 hours)
Cable	Available in 3.7 meters, 7.5 meters, 15 meters, and 30 meters for selection
size	22.9 centimeters (length) x 11.9 centimeters (width)
weight	0.91 kg (including battery)
defects liability period	Host: Three years; Probe and cable: one year