In the paper and board industry, moisture content is one of the most important parameters affecting production quality, dimensional stability, storage performance and final product reliability. Even small moisture variations can lead to elongation, shrinkage, wave formation, flatness problems and customer complaints.
The humimeter PM5 is designed to help paper manufacturers, paper processors and paper retailers measure the absolute water content of paper and board directly at the roll. With its quick, accurate, non-destructive and easy-to-use design, PM5 provides practical moisture control for both production and quality assurance processes.
What Is humimeter PM5?
The humimeter PM5 is a handheld moisture meter for determining the absolute water content of paper and board at rotating or stationary rolls.
It is developed for paper and board applications where fast on-site moisture control is required without damaging the material. The device allows operators to measure moisture directly on the roll surface and immediately read the result on the illuminated display.
This makes it especially useful for paper mills, converting plants, storage facilities, packaging producers and paper trading companies.
Why Moisture Measurement Matters in Paper Production
Moisture has a direct influence on the behavior of paper and board. If the moisture content is too high or unevenly distributed, the material may develop waves, flatness problems or processing difficulties. If the moisture content is too low, the material may become brittle or dimensionally unstable.
By measuring moisture regularly, operators can detect moisture streaks early, react quickly to moisture variations, optimize drying costs and reduce production problems caused by elongation or shrinkage.
The PM5 also supports final product checks before shipping, helping companies improve quality assurance and reduce the risk of customer complaints.
Non-Destructive Measurement Method
One of the main advantages of humimeter PM5 is its non-destructive measuring method. The device does not require cutting samples, damaging the paper roll or interrupting the production process for laboratory testing.
The operator simply selects the correct calibration curve according to paper density and presses the sensor bars of the instrument against the long side of the roll. The display immediately shows the measuring value.
For average moisture content measurement or for identifying sections that are too moist or too dry, the device can be moved along the full length of the roll.
Designed for Rolls in Real Production Conditions
The PM5 is suitable for both rotating and stationary rolls. This makes it practical for different points in the production and logistics chain.
In production, it can be used to monitor moisture behavior during or after drying. In converting and processing, it helps verify whether the paper or board is suitable for further processing. In storage or shipping areas, it helps check product condition before dispatch.
This flexibility makes the PM5 a valuable instrument for quality control teams, production operators and maintenance departments.
Technical Features
The humimeter PM5 offers a measuring range from 1% to 25% absolute water content, depending on paper type. The measuring depth is 50 mm, allowing meaningful moisture evaluation directly at the roll.
The device provides a resolution of 0.1% water content. It includes 22 standard calibration curves, which can be extended depending on application requirements.
The paper temperature range is 0 to +80 °C / 32 to 176 °F. Temperature can be displayed in either °C or °F according to user preference.
Infrared Paper Temperature Measurement
The PM5 includes non-contact infrared paper temperature measurement. This allows the instrument to detect paper temperature without requiring direct contact temperature sensors.
Automatic temperature compensation supports more reliable moisture readings, especially when paper temperature varies during production, storage or processing.
This feature is particularly important in drying and converting processes where temperature changes can influence moisture measurement accuracy.
Data Memory and Digital Documentation
The humimeter PM5 includes data memory for up to 10,000 measuring values. Operators can also enter additional data such as batch numbers, allowing measurements to be linked to specific production lots or customer orders.
Measurement values can be transferred to a PC via USB interface. With the included LogMemorizer® software, data can be archived, exported, processed or printed.
This makes the PM5 useful not only as a handheld measurement tool but also as part of a structured quality documentation workflow.
Simple Measuring Procedure
The measuring procedure is straightforward. First, the operator switches on the instrument and selects the correct calibration curve depending on the paper density. Then the sensor bars are pressed against the long side of the roll.
The illuminated display immediately shows the moisture value. To evaluate moisture distribution across the roll, the operator can move the device along the roll length and observe variations.
This simple procedure helps reduce operator error and supports fast routine measurements in production and warehouse environments.
Included Accessories and Optional Printer
The standard scope of supply includes the humimeter PM5, USB data interface module, LogMemorizer measuring data recording and analysis software on a USB flash drive, rechargeable battery and a plastic case with proof plate.
A portable thermo printer is available as an option. This allows measurement results to be printed directly on site, which can be useful for documentation, incoming goods inspection or customer-related quality checks.
Accredited Testing Background
Schaller’s test laboratory conforms to the requirements of EN ISO/IEC 17025:2007. The laboratory has also been certified for the determination of water content according to EN ISO 287, which covers oven drying methods for paper and board moisture content.
This background supports the technical reliability of the humimeter product range and reflects a strong focus on measurement quality and documentation.
Application Benefits
The humimeter PM5 helps paper and board producers optimize maintenance times by detecting moisture streaks early. It allows quick reaction to moisture variations, supports drying cost optimization and helps avoid manufacturing problems caused by elongation and shrinkage.
The device also helps prevent flatness problems caused by wave formation and enables product checks before shipping. Because the method is non-destructive, moisture control can be performed directly on the roll without damaging valuable material.
Why Choose humimeter PM5?
The humimeter PM5 is a practical choice for companies that need fast, portable and reliable moisture measurement for paper and board rolls.
Its non-destructive measuring method, 50 mm measuring depth, infrared temperature measurement, automatic temperature compensation, data memory and PC software integration make it suitable for both production control and quality assurance.
For paper manufacturers, processors and retailers, the PM5 provides a convenient way to improve product consistency, reduce process problems and document moisture values efficiently.
Conclusion
The humimeter PM5 is a handheld moisture meter designed specifically for paper and board rolls. It enables quick, accurate and non-destructive determination of absolute water content at rotating or stationary rolls.
With its wide measuring range, calibration curves, infrared paper temperature measurement, automatic temperature compensation and data logging capability, PM5 supports better moisture control throughout production, processing, storage and shipping.
For companies working with paper and board, humimeter PM5 offers a reliable tool for improving quality, reducing waste and maintaining consistent product performance.