Techotrix

PMT-330 Handheld

PMT-330 Handheld

Portable RF Moisture Meter

The Process Sensors Portable Moisture Tester (PMT-330) puts the capabilities of an online moisture analysis and control system in the palm of your hand, allowing operators to quickly and easily spot-check the moisture content of boards, wood, plastic, and paper products. It features radio-frequency dielectric (RF) measurement technology that penetrates product surfaces and instantly displays accurate moisture data.

PMT-330 Handheld Brochure
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RF Moisture Detection in the Palm of Your Hand

Benefits

  • On-the-Spot Moisture Control: PMT-330 delivers direct moisture profiling with an accuracy range of ±1.0% of full scale (subject to application), allowing rapid at-line review of product condition
  • Simple, Lightweight Design: PMT-330 puts the same state-of-the-art principles of an online RF moisture measurement system into a compact, easy-to-use device, helping users make data-driven quality assessments of finished products
  • Multiple Calibrations Available: Pre-programmed to reliably analyse the moisture content of a wide array of product types

Features

  • RF dielectric measurement provides a true moisture profile
  • Low-cost, sophisticated at-line or laboratory measurement solution, offering unmatched accuracy and reliability
  • A completely wireless, rechargeable battery-operated unit
  • Instantly obtain accurate moisture readings
  • Options available to analyse boards and sheets up to a depth of 20 mm (.75 in)

Applications

The PMT-330 matches simplicity with convenience to measure the moisture content of finished products across a wide range of industries.
  • Board Manufacturing: Gypsum board, hardboard, particle board, gypsum/fibre board, cement/fibre board
  • Wood Manufacturing: Hardwood veneers, plywood veneers, dimensional lumber
  • Paper Manufacturing: Cardboard, laminates, pulp bales, sheets

How It Works

The PMT-330 is designed for ease of use and rapid analysis for at-line moisture content control.
  1. Hold the sensor upright in the air to “zero” the unit, which calibrates the device to the air humidity and temperature of the local environment.
  2. Select from 1 of 10 “Product Codes” from the device, which are pre-programmed calibrations of the material you are measuring.
  3. Press the sensor firmly onto a single board and press a button to execute your moisture measurement. Within seconds, an accurate moisture reading will appear on the display screen.
PMT-330 utilises radio frequency dielectric measurements (RF) to penetrate and analyse the full moisture composition of the product. It is an alternative to near-infrared (NIR) technology, which measures the product’s surface without penetrating. This article explains the key differences between NIR and RF.
Dimensions W x D x H 115 mm x 230 mm x 51 mm (4.5 in x 9 in x 2 in)
Weight 0.5 kg (1 lbs)
RF Penetration Depth PMT-330G: 20 mm (0.75 in);
PMT-330V: 3 mm (0.125 in)
Accuracy ±1.0% of full scale
Operating Temperature 0°C – 50°C (32°F – 120°F)
Display 2-Line x 16 Alpha Numeric Back-lit LCD for Maximum Brightness
Modes Real-time or Peak Moisture
Calibrations Up to 10 Calibrations Stored in Non-Volatile Flash Memory
Battery Nickel Metal Hydride (Ni-MH) Rechargeable Battery Pack
Operating Time of Full Charge 15 Hours (300 Operations @ 3-Minute Time-Out)
Power 10/240 VAC, 50/60 Hz, 30 Watts
Configurations for Board Thicknesses

The PMT-330 is available in two options to accurately measure the moisture of different board thicknesses:

PMT-330G: Effective penetration depth of approximately 20 mm (0.75 in), ideal for gypsum and other board applications.

PMT-330V: Effective penetration depth of approximately 3 mm (0.125 in), ideal for veneer and thin sheet applications.