Featuring a waterproof IP-67, impact-resistant case, the YSI 556MPS simultaneously measures dissolved oxygen, pH, conductivity, temperature, and ORP. Or, simply purchase the cable to measure DO, conductivity, and temperature if needed. The YSI 556 MPS conforms to GLP standards.

You may also want to review the Professional Plus Multiparameter Handheld "ProPlus"

Packed with Features!

Battery Options: The unit is powered by alkaline batteries or an optional rechargeable battery pack (YSI Part # 6118) with fast charge feature.

Optional Barometer: Internal barometer can be user-calibrated and displayed along with other data, used in dissolved oxygen calibrations, and logged to memory for tracking changes in barometric pressure.

Carrying Case: The instrument comes standard with a soft-sided carrying case with enough space for the YSI 556 MPS, a 20-meter cable, and calibrating supplies.

Additional Features

• Field-replaceable DO, pH, and pH/ORP probes
• RS-232 and Compatible with EcowatchTM for WindowsTM data analysis software
• Easy-to-use, screw-on cap DO membranes
• User-upgradable software from YSI website
• Three-year warranty

 

Pair the 556 up with the 5083 flow cell and 5080 carrying case and you have a complete groundwater package. The 5083 flow cell is extrmely simple to connect to the 556 and cleans up even easier!

In order to ensure data quality be sure to use the 5580 Confidence Solution with the 556 . Quickly check pH, ORP, and conductivity values to guarantee probe accuracy during important field studies.

The 556 also features menu-driven operation with multiple languages including Spanish, French, Italian, German, Norwegian, and English.

Data management is simple with EcoWatch™ desktop software for tabluar and graphical data representations.

 

 

 

 

YSI 556 Instrument General Specifications

Barometer		Optional
Cables		4, 10, or 20 meters (13.1, 32.8, 65.6 ft)
Communications		RS-232 Serial
Connector		MS (military spec) waterproof with bayonet lock
Data Management		EcoWatch desktop software compatible
Data Memory		49,000 data sets (data, date, time, user-defined info); interval or manual logging
Dimensions		11.9 cm width x 22.9 cm length (4.7 in x 9 in)
Logging		49,000 data sets, date and time stamp, manual or logging, with user-selectable intervals
Power		4 alkaline C-cells; optional rechargeable pack
Warranty		3-year instrument; 1-year probes and cables
Weight with Batteries		916 grams (2.1 lbs)

 

YSI 556 System Specifications (Instrument with Cable & Probe)

	Sensor Type	Range	Accuracy	Resolution
Dissolved Oxygen (%)	Polarographic	0 to 500% air saturation	0 to 200% air saturation, ± 2% of the reading or ± 2% air saturation, whichever is greater; 200 to 500% air saturation, ± 6% of the reading	0.1% air saturation
Dissolved Oxygen (mg/L)	Polarographic	0 to 50 mg/L	0 to 20 mg/L, ± 0.2 mg/L or ± 2% of reading, whichever is greater; 20 to 50 mg/L, ± 6% of the reading	0.01 mg/L
Temperature	Thermistor	-5 to 45°C	±0.15°C	0.1°C
Conductivity	Four electrode cell	0 to 200 mS/cm (auto range)	±0.5% of reading or 0.001 mS/cm, whichever is greater (4-m cable) ±1% of reading or 0.001 mS/cm, whichever is greater (20-m cable)	0.001 mS/cm to 0.1 mS/cm (range dependent)
Salinity	Calculated from conductivity and temperature	0 to 70 ppt	±1.0% of reading or 0.1 ppt, whichever is greater	0.01 ppt
pH (optional)	Glass Combination Electrode	0 to 14 units	±0.2 units	0.01 units
ORP (optional)	Platinum button	-1999 to +1999 mV	±20 mV	0.1 mV
Total Dissolved Solids (TDS)	Calculated from conductivity and temperature	0 too 100 g/L		4 digits
Barometer (optional)		500 to 800 mmHg	±3 mmHg within ±10°C temperature range from calibration point	0.1 mmHg

 

Ordering Guide

Item #	Description
556-01	Instrument with 5061 large, soft-sided carrying case
556-02	Instrument with barometer option and 5061 large, soft-sided carrying case
5563-4	4-meter cable with DO, temperature, conductivity
5563-10	10-meter cable with DO, temperature, conductivity
5563-20	20-meter cable with DO, temperature, conductivity
5564	pH probe for any 5563 cable
5565	pH/ORP probe for any 5563 cable

Manuals

556 MPS Operations Manual

Français - YSI 556 Manuel de l’opérateur, Rev B

Deutsch - YSI 556 Handbuch, Rev B

Norsk - YSI 556 Driftsmanual, Rev B

Español - YSI 556 Manual de Instrucciones, Rev C

Specification Sheets

YSI Amplified pH and pH/ORP Sensors

YSI 556 Multiparameter System Specifications

Français - YSI 556 Système Multiparamètres

Deutsch - YSI 556 Multiparameter System

Italiano - YSI 556 Sistema Multiparametro

Español - YSI 556 Sistema Multisonda

Catalogs & Brochures

Groundwater Applications & Capabilities

Water Quality Sampling for Field and Laboratory

Aquaculture Applications, Capabilities & Solutions

Español - Piscicultura Aplicaciones, Competencia y Soluciones

Source Water Monitoring - Applications, Capabilities & Solutions

Application Notes

Oyster Restoration Efforts in Delaware Bay - Water Quality

YSI Multiparameter Handheld Used to Help Monitor a Forest Invader in Headwater Streams

Delaware Oyster Gardening and Restoration - A Cooperative Effort

Busseron Creek Watershed Partnership Addresses Concerns in a Rural Watershed

ORP Management in Wastewater as an Indicator of Process Efficiency

Project Wadi Fish Attempts to Save Rare Freshwater Species

YSI Instruments Help the Partnership for Interdisciplinary Studies of Coastal Oceans Determine Hypoxic Zones

Low-Flow Sampling of Water Quality Parameters Used in Determining Groundwater Stability

YSI Multiparameter Instruments Assist in Storm Water and Combined Sewer Overflow Monitoring

Great Smoky Mountains National Park Uses YSI 556 in Species Identification Program

Technical Notes

Cleaning and Reconditioning Instructions for pH100, 60/63 pH, 5564 pH and 5565 pH/ORP Probes

Compliance Certifications

YSI Instruments EPA Compliance Guide

 

		3059 Flow Cell, Standard 203 mL Standard flow cell. 203 mL. Easily disassembles for complete cleaning. Can be used with the Pro Series single or dual-parameter cables, 556, or 600XL and 600XLM instruments.
		3069 Belt Clip Easily attach any Pro Series, 556, or 650 instrument to your belt or other convenient location with this simple clip.
		3074 Hard-Sided Carrying Case The 3074 hard-sided carrying case ideal for all Pro Series products.
		3075 Soft-Sided Carrying Case A soft-sided carrying case ideal for all Pro Series products. Cable management kits easily attach to the outside of the case keeping the inside clean and dry.
		3682 Zobell ORP Calibration Solution YSI 3682 Zobell solution is used for calibrating ORP/Redox on several YSI instruments.
		3824 Assorted pH Buffers Case Various pH buffers for pH probe calibration.
		4654 Tripod This small 4654 tripod supports the instrument at a convenient viewing angle.
		5061 Soft-Sided Carrying Case The 5061 soft-sided carrying case is included with the purchase of a 556 instrument.  Holds instrument and accessories.
		5560 Temperature & Conductivity Sensor Combination temperature and conductivity sensor for the YSI Model 556 instrument
		5564 pH Sensor pH sensor for the YSI Model 556 instrument
		5564A Amplified pH Sensor Amplified pH sensor for the YSI Model 556 instrument.
		5564A Kit Amplified pH Sensor Amplified pH sensor kit for the YSI Model 556 instrument.
		5565 pH & ORP Sensor pH and ORP sensor for the YSI Model 556 instrument
		5565A Amplified pH/ORP Combination Sensor Amplified pH/ORP combination sensor for the YSI Model 556 instrument.
		5565A Kit Amplified pH/ORP Combination Sensor Amplified pH/ORP combination sensor kit for the YSI Model 556 instrument.
		5580 Confidence Solution® Never worry about the accuracy of your pH, ORP, or conductivity data again! Ensure probe performance with the 5580 Confidence Solution®.
		559 Replacement Polarographic DO Sensor YSI 559 Polarographic sensor for the 550A DO and 556 Multiparameter instruments.
		5906 DO Cap Membrane Kit YSI 5906 screw-on cap dissolved oxygen membranes.
		5908 DO Cap Membrane Kit YSI 5908 screw-on cap dissolved oxygen membranes.
		5909 DO Cap Membrane Kit YSI 5909 screw-on cap dissolved oxygen membranes.
		614 Ultra Clamp This small clamp supports the instrument at a convenient viewing angle. Ideal for attaching the instrument to the gunwale of a boat, table, or and surface with an edge to clamp to.
		655563 Amplified Sensors Extension Adapter Extension adapter for the 556 cables and Pro Series dual port cables 1010 and 1020.
		690 Cable Weight The 690 cable weight attaches to the end of the probe guard. Ideal for longer cables to ensure you reach the depths you need.
		691 Cable Weight The 691 cable weight attaches to the end of the probe guard. Ideal for longer cables to ensure you reach the depths you need.
		Conductivity Calibration Solutions NIST-traceable conductivity solutions to calibrate both field instruments and lab instruments and cells together for maximum accuracy.