humimeter PMP - paper and solid board moisture meter

Application

The humimeter PMP (the direct successor to the P2) measures the absolute water content of paper and solid board stacked in a pile. The measurement is non-destructive and needs no sample preparation: the device is placed on top of the stack and the result appears in seconds.

The typical user is a printing house, a paper wholesaler or a packaging manufacturer - the PMP is above all for checking an incoming delivery and documenting the state of the paper before production.

When the PMP is not the right instrument

The manufacturer states both limits explicitly. The PMP covers paper and solid board - corrugated board, with its fluted structure, is measured differently.

Calibration curves selected by the density of the paper

The PMP carries 20 calibration curves chosen by the density of the material, not by its trade name, plus a Reference curve for checking the readings with the test plate. The range covers densities from 300 to 1300 kg/m³ - from tissue and filter paper (300 to 450 kg/m³), through low-density board (500 to 550 kg/m³), newsprint (about 600 kg/m³) and copying paper (750 to 900 kg/m³), to brochure papers (950 to 1300 kg/m³).

If the material in use fits none of the curves, the manufacturer prepares one from a laboratory analysis (art. no. 11217) or loads an existing curve into the device (art. no. 12297).

How a measurement is taken

  1. Select the curve matching the density of the paper.
  2. Before measuring, let the meter adjust to the temperature of the paper - the difference may be no more than 3 °C.
  3. Stack the material at least 25 mm high. On a stationary reel, place the meter on the rounded outer surface where a single, uniform layer of paper is visible. A reading on the flat end of the reel, where the edges of the layers show, is not reliable.
  4. Place the device flat and press with a force of about 4 kg - the sensor surface has to touch over its whole area.
  5. Read the result. The measurement reaches 20 mm deep, so it describes the inside of the stack rather than the top sheet alone.
  6. Repeat at several points to catch differences within the pallet.

Main features

  • Range 1 to 15 % water content, depending on the material
  • Resolution 0.1 % water content and 0.1 °C / °F for temperature
  • Measuring depth 20 mm - a result from inside the stack
  • 20 calibration curves selected by the density of the paper and a Reference curve for test plate checks
  • Non-destructive measurement in seconds, with no sample preparation
  • Automatic temperature compensation
  • Hold function and an automatic and manual logger for 10 000 readings with measuring point reports
  • Test plate included for checking the readings yourself
  • Backlit matrix display 128 × 64
  • Multilingual menu
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Technical data

Parameter Value
Measuring range 1 to 15 % water content (depending on the material)
Resolution 0.1 % water content; 0.1 °C / °F for temperature
Measuring depth 20 mm
Minimum material thickness 25 mm
Paper density range 300 to 1300 kg/m³
Number of calibration curves 20 + Reference (for test plate checks)
Paper temperature 0 to +50 °C / 32 to 122 °F
Temperature compensation automatic
Measuring time a few seconds, with no sample preparation
Memory hold function, automatic and manual logger for 10 000 readings with measuring point reports
Display backlit matrix display 128 × 64
Storage temperature -20 to +60 °C
Protection rating IP 40
Dimensions 147 × 75 × 30 mm
Weight 265 g (with batteries)
Power supply 4 × 1.5 V AA alkaline batteries
Menu languages English, German, French, Italian, Spanish, Portuguese, Czech, Russian, Polish and an international version
Article number 13770

Scope of delivery

Checking the readings with the test plate

The manufacturer recommends a check every four weeks. A measurement taken on the test plate at 20 to 26 °C should give a result between 24.8 and 25.8. Anything outside that band means the instrument needs adjusting.

Extended accessories

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