Name: Dissolved Oxygen Instruments 115VAC
Brand: ironfixaccessories.com
SKU: YSI 58-115
Price: 769.27 USD
Availability: InStock

The YSI 58 is a proven field and laboratoryinstrument. The 58 displays oxygen concentrations in two temperature-compensatedmodes.
The instrument offers manual salinity correction, recorder output, and operationfrom line power or batteries. The case also holds additional
batteries for an optional DO field stirrer.

Portable
Lab and field
Rugged
Works with a variety of YSI probes

YSI 58 Instrument General Specifications

Medium	fresh, sea, or polluted water and most other liquid solutions
Mode to Mode Accuracy (mg/L to % air saturation)	+ 0.5% of reading, + 2 least significant digits (in the 0.01 mg/L mode)
Power	4 D-size Alkaline Batteries (included) Approximately 1000 hours operation from each new set of batteries. Low battery indicator signal (LOBAT) appears automatically when approximately 50 hours of battery life remain.
Recorder Output	Voltage	0 to 1 volt, full scale
Accuracy	+ 0.4 % of full scale, + 1 least significant digit (in the 0.01 mg/L mode)
Minimum Load Impedance	50 K OHM
Salinity Compensation	Range	0.0 to 40.0 ppt
Accuracy	+ 0.3% of reading + 1 digit
Temperature	Operating	0 to +45 °C
Storage	0 to +45 °C
Temperature Compensation	The mg/L modes are automatically temperature compensated to an accuracy of + 1% of the dissolved oxygen reading between 5 and 45°C; and to an accuracy of +2% between 0 and 5. °C. See Temperature Sensitivity in probe specifications.
Water Resistance	With RECORDER OUT, BATT ELIM and STIRRER receptacles capped,every case opening is splash resistant.
Warranty	2-year instrument

YSI 58 Specifications (Instrument Only)

	Range	Accuracy	Resolution
Dissolved Oxygen (%)	0 to 200% air saturation	+0.3% Air Saturation	0.1% air saturation
Dissolved Oxygen (mg/L)	0 to 20 mg/L	0.03 mg/L	.01 mg/L
Temperature	-5 to 45°C	± 0.3 °C, plus probe interchangeability	0.1°C

Probe Specifications for:
YSI 5239
YSI 5718
YSI 5739
YSI 5750
YSI 5905

Dissolved Oxygen Accuracy	± 0.1 mg/L or ± 2% of reading, whichever is greater
Electrolyte	5739, 5718, 5750	KCl with Kodak Photo-Flo
5905, 5239	KCl with NA₂SO₄
Membrane Material	5905	FEP PTFE Cap
5239, 5718, 5739, 5750	.001 FEP PTFE Film .0005 FEP PTFE available, YSI 5776
Pressure Compensation	Effective 0.5% of reading with pressures to 100 psi (230 feet of seawater)
Polarizing Voltage	0.8 volts nominal
Probe Current	Air at 30°C	19 microamps nominal
Nitrogen at 30°C	15 microamps or less
Probe Response Time	5905	Typical response to a step change in dissolved oxygen at 20°C is 90% of the change in 30 seconds.
5239, 5718, 5739, 5750	Typical response for temperature and dissolved oxygen readings is 90% in 10 seconds at a low constant temperature of 30°C with the 5775 membrane. DO response and low temperature and low DO is typically 90% in 30 seconds. YSI 5776 High Sensitivity membranes may be used to improve response at low temperature and DO concentrations.
Sensor Materials	Cathode	Gold
Anode	Silver
Temperature	Accuracy	+ 0.2°C
OperatingRange	0° to 45°C
Sensitivity	When measuring oxygen, the probe output current increases approximately 3.5% per 1°C of increase in temperature. The circuitry automatically compensates for this effect in a typical probe. However, the exact temperature sensitivity of an individual probe may vary slightly according to its condition. Therefore, a probe should be calibrated at a temperature close to the measurement temperature in order to minimize the possible effect of such variation.
Warranty	1-year