Thermo Scientific™ Orion Star™ A122 Conductivity Portable Meter

Catalog No.	Probe Type
13-645-512	2-cell Conductivity Sensor
13-645-510	Not included

Catalog No. 13-645-512 Supplier Thermo Scientific™ Supplier No. STARA1225

Description

Take simple conductivity, TDS and temperature measurements with this conductivity portable meter with easy operation for basic field testing.

Take simple, routine conductivity, total dissolved solids (TDS) and temperature measurements with the Thermo Scientific™ Orion Star™ A122 Conductivity Portable Meter. This instrument, intended for basic conductivity analysis in the field, is easy-to-use and budget-friendly. Obtain temperature compensated readings using linear option with 20°C or 25°C reference temperatures. Quickly navigate setup menus and ensure consistent calibrations using the simple keypad layout and on-screen text prompts. This waterproof meter has an IP67-rated housing for rugged protection in outdoor environments.

Thermo Scientific Orion Star A122 conductivity portable meters are a simple, economical solution for your routine outdoor sample analysis. Featuring an emphasized measure key, selectable read modes and measurement stability indicator, our basic Orion Star A122 conductivity meters are designed to deliver measurements you can trust at an affordable price.

• Measure conductivity or TDS with temperature
• Perform a one point automatic or manual calibration
• Auto-ranging conductivity values offer consistent readings across entire measurement range
• Use linear temperature compensation with 20°C or 25°C reference temperatures
• Simplified, easy-to-read display shows main measurement with temperature, stability indicator and electrode condition icon
• User-friendly operation with basic calibration text prompts
• Easily recall calibration data for procedure checks
• Non-volatile memory preserves 50 point internal data log and meter settings, even with loss of power
• Flexible power options with AA batteries or optional universal power adapter
• IP67-rated housing is waterproof for rugged field operation
• Meter kits include hard-sided field case and protective meter armor with electrode holders, adjustable wrist/belt strap and built-in meter stand
• Meters offer CE, TUV 3-in-1 and FCC Class A certifications and 3-year replacement warranty

Specifications

• Description: Orion Star A122 conductivity/TDS portable meter kit with 2-cell conductivity sensor, solutions, meter armor and field case
• Accuracy (Conductivity): 0.5% of reading ±1 digit
• Outputs: None
• Includes: Star A122 conductivity meter, 011050MD Orion 2-cell conductivity sensor, 011007 Orion 1413 µS conductivity standard, protective meter armor, hard-sided field case, 4 AA batteries, literature CD, printed quick start guide and meter test certificate
• Measurement Modes: Conductivity, TDS with Temperature
• Compatible Probes: 2-cell or 4-cell conductivity sensors with built-in temperature
• Cell Constant: 0.001 to 10cm-1
• Calibration: Conductivity and temperature
• Calibration Points (Conductivity): 1
• Range (Conductivity): 0.01 μS/cm to 200.0 mS/cm
• Resolution (Conductivity): 0.01 μS minimum, auto ranging up to 3 significant digits
• Temperature Compensation: Linear
• Temperature (Metric) Reference: 20, 25°C
• Range (TDS): 1 to 19,999 mg/L
• Resolution (TDS): 1 mg/L
• Accuracy (TDS): 0.5% of reading ±1 digit
• TDS Factor Range: Linear (0.02 to 9.99)
• Temperature Range (Metric): -5°C to +105°C
• Resolution (Temperature): 0.1°C (0.1°F)
• Accuracy (Temperature): ±0.1°C
• Temperature Selection: Manual or automatic with ATC temperature probe
• Temperature Probe Calibration: 1 point temperature offset calibration
• Display Type: LCD
• Memory: Non-volatile memory preserves log and settings
• Data Points: 50
• Log Function Type: Automatic with Auto-Read Measure Mode, Manual with Continuous Measure Mode
• Data Management Details: Internal data point memory
• Inputs: 8 pin MiniDIN (conductivity sensor with built-in temperature)
• Certifications/Compliance: CE, TUV 3-1, FCC Class A
• IP Rating: IP67
• AC Adapter: Universal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003)
• Dimensions (L x W x H): 24 x 10 x 6.5 cm (9.5 x 3.9 x 2.6 in.)
• Weight (Metric): 0.5 kg
• Weight (English): 2 lb.
• Warranty: 3 Year Meter
• Probe Type: 2-cell Conductivity Sensor
• Relative Humidity Range: 5 to 85%, non-condensing
• Model: Orion Star A122 Conductivity/TDS/Temperature Portable Meter
• Power Supply: 4 AA batteries (included) or universal AC adapter (sold separately)
• Stability: Smart Stability and Smart Averaging
• Keypad: Simple with highlighted measure key, scroll and shortcut keys
• Languages: English
• Temperature (English) Operating: 41°F to 113°F (ambient)
• Temperature (Metric) Operating: 5°C to 45°C (ambient)
• Channels: 1
• Battery Type: 4 x AA (included)
• Battery Life: 2000 hr.

Frequently Asked Questions (FAQs)

How long is the warranty period for Orion conductivity meters?

At Thermo Fisher Scientific, we stand behind the quality and reliability of our instruments. That's why we offer a minimum two-year (2) warranty on all Orion benchtop and portable conductivity meters. Obtain peace of mind knowing that your investment is protected. Should any issues arise within the warranty period, our team of experts is committed to providing you with prompt and efficient service. Be sure to check instrument specifications to confirm the warranty coverage period.

How do I perform a calibration using Orion conductivity meters?

Calibration is an important step to obtaining accurate results on your Orion benchtop or portable conductivity meter. Before beginning the calibration process, ensure that you are utilizing freshly poured, non-expired calibration standards to ensure accurate results. Follow the steps below to calibrate your conductivity meter.

• Prepare the calibration standards: Obtain at least one conductivity reference standard with a known conductivity value near the expected sample conductivity range. Ideally, use one standard close to the expected conductivity of your sample, and additional standards for different conductivity ranges. Ensure that the standards are fresh and have not expired.
• Clean the probe: Rinse the probe with distilled or deionized water to remove any debris or contaminants. If necessary, gently wipe the probe with a soft cloth or tissue.
• Turn on the conductivity meter: Power on the conductivity meter and allow it to warm up, if needed. • Immerse the probe: Immerse the probe into a beaker containing the first calibration standard. Ensure that the probe is fully submerged and that it is not touching the sides or bottom of the beaker.
• Allow stabilization: Allow the conductivity reading to stabilize. This may take a few moments, depending on the specific meter and standard being used. The reading should become steady and remain constant.
• Adjust the conductivity value: Using the calibration controls on the conductivity meter, adjust the reading to match the known conductivity value of the calibration standard. Reference the user manual for specific guidance on adjusting the conductivity.
• Rinse the probe: After calibration, rinse the probe with distilled or deionized water to remove any residual calibration solution.
• Repeat calibration: Repeat the calibration steps with the second calibration standard, following the same process as before.
• Verify accuracy: After calibration, it is recommended to check the conductivity meter's accuracy by measuring a conductivity solution of known value. This can help ensure the reliability of your measurements.

To learn more about conductivity calibration, maintenance and beyond, download our user guide: Orion Conductivity Probe User Guide

How do I perform an analysis using Orion conductivity meters?

Before beginning an analysis on your Orion benchtop or portable conductivity meter, assemble your materials. You will need a conductivity probe suitable for your application, calibration standards, and a test sample. Follow the steps below to obtain your conductivity analysis.

• Calibrate the conductivity meter: Start by calibrating your conductivity meter using at least one calibration standard. Typically, you will need at least one standard with a known conductivity value near the expected sample conductivity range. Be sure to reference the user manual for instructions on how to properly calibrate your conductivity meter.
• Prepare your sample: Ensure that your sample is at the desired temperature (most frequently room temperature).
• Immerse the electrode: Dip the conductivity probe into the sample. Avoid touching the sides or bottom of the container to prevent inaccurate readings.
• Allow for stabilization: Give the conductivity meter some time to stabilize and reach a steady reading. This may take a few seconds to a minute depending on your meter and the characteristics of the sample.
• Record the conductivity value: Once the conductivity meter stabilizes, record the conductivity value and temperature value displayed on the meter. Take note of any temperature compensation settings if applicable. • Rinse the probe: After each measurement, rinse the probe with distilled or deionized water to remove any residue or contaminants. This ensures accurate subsequent readings.
• Repeat (if necessary): If you need to analyze multiple samples, repeat the process with each sample, recalibrating the conductivity meter if required.

To learn more about how to get accurate conductivity measurements, download the smart note: Top 10 Mistakes to Avoid When Measuring Conductivity in Liquids.

How do I choose an Orion conductivity probe for my application?

When choosing an Orion conductivity probe for your application there are many factors to consider. Measurement range, sample type, container dimensions, accuracy/ precision requirements, temperature compensation needs, cell constant, durability, maintenance, and meter compatibility are all key features to evaluate.

To learn more about Orion conductivity probes, download the brochure: Orion Conductivity Probes

What supplies do I need to perform an analysis with Orion conductivity meters?

To perform an analysis using Orion benchtop and portable conductivity meters, you will need the following supplies: conductivity probe, conductivity standards, distilled or deionized water, sample containers, and a stirrer probe (optional).

How are Orion conductivity meters powered?

Orion benchtop and portable conductivity meters are powered differently to meet the needs of your testing environment. Orion portable conductivity meters are powered by four (4) AA batteries (included), or a universal AC adapter (sold separately). Orion benchtop conductivity meters are powered by an AC adapter typically consisting of a universal 100-240 V 50/60 Hz power supply and include interchangeable wall plugs for US/Japan, Europe, UK/Singapore, Australia/New Zealand and China outlets.

Are Orion conductivity meters splash and dustproof?

Orion benchtop and portable conductivity meters are designed to be splash and dustproof. They are built with durable materials containing protective features to help ensure reliable performance. Our portable meters are IP-67 rated to protect against splashes, dust and limited immersion. Our benchtop meters are IP-54 rated to protect against splashes and dust. Please note that while our conductivity meters are resistant to splashes and dust, they are not fully waterproof. Reference the user manual for additional details regarding proper usage and maintenance.

What additional measurement parameters are available on Orion conductivity meters?

Orion benchtop and portable multiparameter meters offer the ability to measure additional parameters beyond conductivity. Most Orion conductivity meters also measure total dissolved solids (TDS), salinity and resistivity with temperature. Dependent upon the meter model selected, users can also monitor pH, dissolved oxygen (DO), ion concentration and more.

How many measurement channels are available on Orion conductivity meters?

Orion benchtop and portable conductivity meters come with a variety of measurement channel options designed to support your needs. Choose from as little as one (1) measurement channel for more streamlined applications, to as many as four (4) measurement channels for more complex workflows where multi-parameter or concurrent analysis is a requirement. To shop Orion multiparameter electrochemistry meters, click here

How accurate are Orion conductivity meters?

The conductivity accuracy on Orion benchtop and portable conductivity meters varies upon the meter model selected. Generally, Orion conductivity meters are ±0.5% of the reading. Be sure to check instrument specifications to ensure your desired conductivity accuracy can be achieved.

What is the conductivity range on Orion conductivity meters?

The conductivity range on Orion benchtop and portable conductivity meters varies upon the meter model selected. Generally, Orion conductivity meters offer a range of 0.001 μS/cm to 3000 mS/cm. Be sure to check instrument specifications to ensure your desired conductivity range is covered.
To learn more about how to get accurate conductivity measurements, download the smart note: Top 10 Mistakes to Avoid When Measuring Conductivity in Liquids

How do I choose between an Orion benchtop or portable conductivity meter?

When choosing between an Orion benchtop or portable conductivity meter, consider factors such as portability needs, measurement capabilities, accuracy requirements, desired features, and budget constraints. Our portable meters offer convenience for field use, while our benchtop meters provide higher accuracy and contain a more robust feature offering. Consider your specific application needs before selecting a conductivity meter.

What applications can benefit from conductivity analysis?

Conductivity analysis is beneficial to a wide range of applications across various industries and scientific fields. Some key applications that can benefit from conductivity analysis include environmental monitoring, municipal water treatment, agriculture, food and beverage, industrial processes, pharmaceutical, healthcare and scientific research.
Browse our Water Quality Resource Library to learn more via application notes, technical notes, videos and more.

How does a conductivity meter work?

A conductivity meter uses electrochemistry to measure the ability of a solution to conduct an electric current. It consists of a pair of electrodes, typically made of platinum or stainless steel, which are immersed in a sample for analysis. During the analysis, an alternating current (AC) is applied, and the ions present in the sample facilitate the flow of electric current between the electrodes. The conductivity meter then measures the electrical resistance of the sample, which is inversely proportional to its conductivity. By considering the cell constant (based on electrode geometry and distance), the meter calculates and displays the conductivity value, typically in microsiemens per centimeter (µS/cm) or millisiemens per centimeter (mS/cm).