Accurate, dependable portable meters for field measurement and calibration


When you need fast, reliable readings outside the control room, our portable meters deliver lab-quality accuracy in the field. Designed for technicians, operators, and engineers, these devices make calibration, verification, and spot-checking simple, repeatable, and dependable.

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Portavo 907 Multi Portable Meter

Portavo 907 Multi

Multi-parameter Memosens Portable Meter with Data Storage and USB
The Portavo 907 Multi is a multi-purpose handheld portable meter and calibration tool for pH, ORP, conductivity, and oxygen sensors.
Learn More
The Portavo 907 Multi is a multi-purpose handheld portable meter and calibration tool for pH, ORP, conductivity, and oxygen sensors.
The Portavo 907 Multi is a multi-purpose handheld portable meter and calibration tool for pH, ORP, conductivity, and oxygen sensors.
Portavo 904X portable meter

Portavo 904 X

Memosens Portable Meter for Hazardous Areas
The Portavo 904 X is a multi-purpose handheld meter and calibration tool for pH, ORP, conductivity, or oxygen sensors in Ex rated areas.
Learn More
The Portavo 904 X is a multi-purpose handheld meter and calibration tool for pH, ORP, conductivity, or oxygen sensors in Ex rated areas.
The Portavo 904 X is a multi-purpose handheld meter and calibration tool for pH, ORP, conductivity, or oxygen sensors in Ex rated areas.
Portavo 908 Multi with Printer

Portavo 908 Multi

Memosens Portable Meter with Data Storage, USB, and Printing Capability
The Portavo 908 Multi is a multi-purpose handheld portable meter and calibration tool for pH, ORP, conductivity, and oxygen sensors.
Learn More
The Portavo 908 Multi is a multi-purpose handheld portable meter and calibration tool for pH, ORP, conductivity, and oxygen sensors.
The Portavo 908 Multi is a multi-purpose handheld portable meter and calibration tool for pH, ORP, conductivity, and oxygen sensors.
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Portavo 907 Multi Portable Meter

Portavo 907 Multi

Multi-parameter Memosens Portable Meter with Data Storage and USB
The Portavo 907 Multi is a multi-purpose handheld portable meter and calibration tool for pH, ORP, conductivity, and oxygen sensors.
Learn More
The Portavo 907 Multi is a multi-purpose handheld portable meter and calibration tool for pH, ORP, conductivity, and oxygen sensors.
The Portavo 907 Multi is a multi-purpose handheld portable meter and calibration tool for pH, ORP, conductivity, and oxygen sensors.
Portavo 904X portable meter

Portavo 904 X

Memosens Portable Meter for Hazardous Areas
The Portavo 904 X is a multi-purpose handheld meter and calibration tool for pH, ORP, conductivity, or oxygen sensors in Ex rated areas.
Learn More
The Portavo 904 X is a multi-purpose handheld meter and calibration tool for pH, ORP, conductivity, or oxygen sensors in Ex rated areas.
The Portavo 904 X is a multi-purpose handheld meter and calibration tool for pH, ORP, conductivity, or oxygen sensors in Ex rated areas.
Portavo 908 Multi with Printer

Portavo 908 Multi

Memosens Portable Meter with Data Storage, USB, and Printing Capability
The Portavo 908 Multi is a multi-purpose handheld portable meter and calibration tool for pH, ORP, conductivity, and oxygen sensors.
Learn More
The Portavo 908 Multi is a multi-purpose handheld portable meter and calibration tool for pH, ORP, conductivity, and oxygen sensors.
The Portavo 908 Multi is a multi-purpose handheld portable meter and calibration tool for pH, ORP, conductivity, and oxygen sensors.

A portable meter range built for the way you work

Whether you’re performing routine calibrations, verifying installed sensors, or troubleshooting in the field, M4 Knick offers a portable meter range designed to support your workflow. Our meters combine rugged construction, intuitive operation, and advanced digital technology to deliver accurate, reliable results wherever measurement is needed.
  • Options for single-parameter and multi-parameter measurement
  • Designed for field use with rugged housings and long battery life
  • Memosens compatibility for simplified calibration and secure data handling

Verify measurements with confidence in the field

When measurements don’t match expectations, portable meters give you the clarity you need to investigate and resolve the issue. By allowing you to validate sensor performance directly in the field, compare readings to lab results, and perform spot checks under real process conditions, portable meters help eliminate uncertainty and improve confidence in your data. With the right tools, you can quickly identify discrepancies, confirm accuracy, and make informed decisions without guesswork.

Generate Secure Calibration Certificates

With modern solutions, technicians can perform offline calibrations, securely store results, and generate digital calibration records without relying on handwritten logs or manual data entry. This reduces human error and supports compliance with strict quality standards.

Why field and lab measurements don’t always match

Differences in environment, handling, and timing can create discrepancies between lab and field pH measurements. Understanding these gaps is key to improving process accuracy and making confident operational decisions.
Portavo 908 Portable Meters

The Right Portable Meter

Need help selecting the right portable meter? Check our downloads library for manuals & selection guides, or contact technical support for personalized assistance.

Portable Meter Resources

Is this an accurate pH sensor?

There are tools available that provide a much easier way to evaluate a calibration.