CM moisture measuring devices
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CM material moisture measuring devices

For a quick and reliable moisture determination in building materials

CM measurements provide protection against expensive complaints later on.

Professionals already know: Structural damages are often attributable to excessive residual moisture in the ground.

With Trotec's CM Complete sets you can carry out your measurements quickly and reliably. This way, the residual moisture content in processed construction materials such as floor beddings etc. can be precisely determined directly on site and without the need for additional aids or tools and documented with the supplied log printer (CM Set Business).

Multiple print-outs simplify the administration and in case of a dispute provide proof that the mandatory testing requirements have been met.

Thanks to the accurate measuring technology, you can do without time-consuming laboratory tests.

The value displayed on the pressure gauge corresponds to the actual residual moisture in per cent – no laborious conversion required.

Surface thermometer to avoid measurement errors ...

The conversion tables of all CM devices that are usually available on the market are based on a constant ambient temperature of 20 °C. In the best case, this temperature is present at the beginning and also at the end of a measurement.

If this reference temperature is deviated at the beginning or end of a measurement and not observed, this will result in a more or less relevant error depending on the degree of deviation:

For every 3 °C deviation, the error is 1 % of the pressure (the temperature is the same at the beginning and end of the measurement).

For this reason, all Trotec CM devices are equipped with a surface thermometer which indicates the cylinder temperature. This way, any temperature errors can be detected.

If, for example, a measurement was performed at a constant temperature of 35 °C and a pressure of 0.8 bar was indicated, the CM % moisture content for a sample of 50 g according to the table or scale is 1.57 CM %.

The same measurement carried out at a constant temperature of 20 °C would have resulted in a pressure of 0.76 bar (5 % less) and thus in a moisture value of 1.49 CM %.

The Trotec CM complete sets convince with their easy operability and high precision:


CM Complete Set Classic

The classic among the CM measuring devices

CM Set Classic

In the CM Classic you have a reliable, professional CM measuring device that comes equipped with a mechanical pressure gauge with pressure overload protection to 2.5 bar.

Trotec provides the CM Classic in a Complete Set comprising measuring device and CM basic case.

CM Complete Set Business

The professional CM measuring device with digital precision

CM Set Business

In the CM Business you have a professional precision measuring device that comes equipped with a digital pressure gauge with pressure overload protection to 3 bar.

Trotec provides the CM Business in a Complete Set comprising measuring device and CM basic case.


Pressure gauge model Classic Business

Equipment differences

Pressure measurement principle depending on ambient conditions regardless of ambient conditions
Interdependence of indicated pressure  correlated none
Splash water protection / dust protection  Standard excellent (steel membrane)
Online check  no yes
Measuring time display  no yes
Logging option on site  no yes
Storage of measured values  no yes
Individual log printing  no yes
Maintenance effort  check regularly Very low

techn. characteristics

Accuracy class pressure gauge  1.0 0.1
Measuring range  max. 2.5 bar -1 to 2 bar
Pressure overload protection  decent decent
Max. fault tolerance (mbar)  ± 25 ± 2
Attenuation pressure gauge cover  DIN-EN 837-2 DIN-EN 837-2
Serial interface  RS485

Direct reading of CM % moisture

10 g 
20 g 
50 g 
100 g 
Other bar yes
Power supply Durable battery
(approx. 3,000 h)

Contents of the CM basic case:

  1. Digital scales

    • Weighing capacity 150 g
    • Minimum partition 0.1 g
    • Display stabilization within 3 seconds
    • Mechanical protection by means of weighing plate cover
    • Overload and low voltage indication
    • Automatic switch-off function
    • Calibration weight (100 g) and batteries included in the scope of delivery (3 x 1.5 V of type AAA)

  2. Weighing beakers (2 pc.)
    Weighed portion can be filled directly into the cylinder – no more spilling, how convenient
  3. Full tool kit for sample preparation
  4. Ball set with 4 steel balls (starting, blending and grinding effect)
  5. 20 pieces of carbide ampoules
  6. Three test ampoules with 1.00 g water for cylinder leak test/pressure gauge test
  7. Three spare seals each for pressure gauge and pressure cylinder, spoon and cleaning brush
  8. Lucid operating instructions and quick start guide
  9. Metal carrying case – everything stays in its place, protected for transport

CM log printer

For the documentation of your CM measured data directly on site

Comes fully equipped with protective cover, charger and spare roll of paper. Prints the measuring result directly as log. It is possible to create several print-outs with log numbers during one measurement only.

CM log printer

The log comprises:

  • Adjustable log heading for company data and information on the measuring point
  • Selection list for the measured test material
  • Pressure curve during measurement
  • Overall measurement duration in minutes and seconds
  • Automatic calculation of the CM % moisture for 10, 20, 50 and 100 g weighed portions
  • Adjustable log footer for documentation, location, user and building owner

The CM log printer is the ideal supplementation for the CM set Business...


Hint: combined moisture measurement

Increased safety based on combined check of the readiness for covering

CM measuring is a generally accepted test method for the evaluation of the readiness for covering of screeds. As with all methods of measurement, however, the use of only one procedure can always lead to misinterpretation.

Recently craftsmen and building owners have had to deal in court with the problem that in individual cases CM measurement results indicated the readiness for covering, even though the screed just wasn't ready!

Therefore, play it safe and combine the floor moisture content measurement method approved in continental Europe (CM measurement) with the equilibrium moisture content measurement which has become established as standard method for many a year in e.g. Northern Europe.

In case of the combined moisture measurement, first the equilibrium moisture content and then the moisture content of the sample is determined by use of the very same sample.

The combined moisture measurement method affords users of CM measuring devices more security when assessing the readiness for covering of screeds without causing significant additional expenses. Moreover, the familiar CM measuring device can be used for this additional measurement.

The determination of both values – equilibrium moisture content and moisture content of the sample – allows for a more reliable assessment of the readiness for covering than just one of the two measurement methods.

Since both measuring results have been determined using the same sample, combined moisture measurement results in yet more security for the floor layer!

Required equipment for combined moisture measurement: Other than the already available CM device, only the CM hygro combination cap and a T210 thermohygrometer are required, or, if a T3000 measuring device is available, a TS 210 SDI climate sensor is needed.


A few practical benefits:

  • Robust design in metal carrying case
  • For weighed portions of 100 g (calcium sulphate flow screed)
  • Attractive value-for-money ratio
  • Direct indication of CM moisture with an accuracy class to 0.1 % (Business)
  • Log printer documentation protects against damages and follow-up costs (Business)
  • Complete sets with 2 precision pressure gauges – optionally either mechanical or digital

Buy

CM Koffer Classic show in Trotec online shop
CM Koffer Business ohne Drucker show in Trotec online shop
Drucker für CM Messgerät Business show in Trotec online shop

Techn. data CM set Classic

Technical data
General information
  Article number ZB9100100
Pressure [bar]
  Accuracy class pressure gauge ± 1.0 % typ. ± 25 mbar (absolute, over the entire pressure range)
  Overload-proof to 3.0
Interfaces
  RS232-TTL or RS232-V.24
  RS485 serial
Display
  LCD
  Touch
Type of protection
  IP32
  IP64
Device control
  Membrane keyboard
Housing design
  Plastics
Maintenance effort
  Regular checks required
  Very low
Power supply
  Internal via battery
  External via car power adapter
  Internally via battery
Ambient conditions
  Min. operating temperature [°C] -10
  Max. operating temperature [°C] 80
Dimensions
  Length (packaging excluded) [mm] 140
  Width (packaging excluded) [mm] 520
  Height (packaging excluded) [mm] 360
Weight
  (packaging excluded) [kg] 8.3
Standard scope of delivery
Standard scope of delivery
  Digital scales
  Weighing beakers
  Full tool kit for sample preparation
  Ball set with 4 steel balls
  20 carbide ampoules
  3 test ampoules
  3 spare seals pressure gauge
  3 spare seals pressure cylinder
  Carrying case
  Operating manual
  Battery(-ies)
  Battery pack 4.8 V / 1.650 (typ.) mAh NiMH
  Charger 220 V
  Printer connection cable (special type RS232-TTL)
  Paper reel for thermal printing
Ascertainable measured values and functions
Internal sensors
  Material moisture [CM-%]
  Pressure [bar]
  Wood moisture [%]
  Material moisture [%]
  Material moisture [digits]
Functions and features
  Dust cover
  Direct reading CM-% for 100 g
  Direct reading CM-% for 20 g
  Direct reading CM-% for 50 g
  Splash guard
  Interdependence of indicated pressure and ambient pressure
  Automatic switch-off
  Acoustic alarm function
  Selection sensor characteristic map (sens)
  Automatic battery test
  Automatic functional test
  Direct reading CM-% for 10 g
  Display illumination
  Retaining clip
  Selection of wood material characteristics (Mat)
  Individual log printing
  Maximum value display
  Measuring time display
  Measured value hold function
  Storing measured values on the PC via live data export
  Minimum value display
  Mode selection slide control
  Online check
  Logging option on site
  Manual temperature setting
  Temperature compensation
  Unit 2
  Non-destructive measurement method

 standard equipment

 optionally available

 not available

Techn. data CM set Business

Technical data
General information
  Article number ZB9100106
Pressure [bar]
  Max. fault tolerance [mbar] ± 2
  Accuracy class pressure gauge ± 0.1 % typ. ± 4 mbar (absolute, over the entire pressure range)
  Attenuation pressure gauge cover DIN-EN 837-2
  Overload-proof to 3.5
Interfaces
  RS485 serial
  RS232-TTL or RS232-V.24
Display
  LCD
  Touch
Type of protection
  IP64
  IP32
Device control
  Membrane keyboard
Housing design
  Plastics
Maintenance effort
  Very low
  Regular checks required
Power supply
  Internal via battery
  External via car power adapter
  Internally via battery 1 x 3V, CR 2.032
Ambient conditions
  Min. operating temperature [°C] 0
  Max. operating temperature [°C] 50
Dimensions
  Length (packaging excluded) [mm] 140
  Width (packaging excluded) [mm] 520
  Height (packaging excluded) [mm] 360
Weight
  (packaging excluded) [kg] 8.3
Standard scope of delivery
Standard scope of delivery
  Digital scales
  Battery(-ies)
  Weighing beakers
  Full tool kit for sample preparation
  Ball set with 4 steel balls
  20 carbide ampoules
  3 test ampoules
  3 spare seals pressure gauge
  3 spare seals pressure cylinder
  Operating manual
  Carrying case
  Battery pack 4.8 V / 1.650 (typ.) mAh NiMH
  Charger 220 V
  Printer connection cable (special type RS232-TTL)
  Paper reel for thermal printing
Ascertainable measured values and functions
Internal sensors
  Material moisture [CM-%]
  Pressure [bar]
  Wood moisture [%]
  Material moisture [%]
  Material moisture [digits]
Functions and features
  Dust cover
  Individual log printing
  Measuring time display
  Storing measured values on the PC via live data export
  Online check
  Logging option on site
  Splash guard
  Interdependence of indicated pressure and ambient pressure
  Automatic switch-off
  Acoustic alarm function
  Selection sensor characteristic map (sens)
  Automatic battery test
  Automatic functional test
  Direct reading CM-% for 10 g
  Direct reading CM-% for 100 g
  Direct reading CM-% for 20 g
  Direct reading CM-% for 50 g
  Display illumination
  Retaining clip
  Selection of wood material characteristics (Mat)
  Maximum value display
  Measured value hold function
  Minimum value display
  Mode selection slide control
  Manual temperature setting
  Temperature compensation
  Unit 2
  Non-destructive measurement method

 standard equipment

 optionally available

 not available

Techn. data CM printer

Technical data
General information
  Article number ZB9100043
Interfaces
  RS232-TTL or RS232-V.24
  RS485 serial
Display
  LCD
  Touch
Type of protection
  IP32
  IP64
Device control
  Membrane keyboard
Housing design
  Plastics
  Metal
Maintenance effort
  Regular checks required
  Very low
Power supply
  Internal via battery
  External via car power adapter
  Internal (battery)
Dimensions
  Length (packaging excluded) [mm] 140
  Width (packaging excluded) [mm] 520
  Height (packaging excluded) [mm] 360
Weight
  (packaging excluded) [kg] 0.205
Standard scope of delivery
Standard scope of delivery
  Device
  Battery pack 4.8 V / 1.650 (typ.) mAh NiMH
  Charger 220 V
  Paper reel for thermal printing
  Printer connection cable (special type RS232-TTL)
  Operating manual
  Battery(-ies)
  Digital scales
  Weighing beakers
  Full tool kit for sample preparation
  Ball set with 4 steel balls
  20 carbide ampoules
  3 test ampoules
  3 spare seals pressure gauge
  3 spare seals pressure cylinder
  Carrying case
Ascertainable measured values and functions
Internal sensors
  Pressure [bar]
  Wood moisture [%]
  Material moisture [%]
  Material moisture [CM-%]
  Material moisture [digits]
Functions and features
  Interdependence of indicated pressure and ambient pressure
  Automatic switch-off
  Acoustic alarm function
  Selection sensor characteristic map (sens)
  Automatic battery test
  Automatic functional test
  Direct reading CM-% for 10 g
  Direct reading CM-% for 100 g
  Direct reading CM-% for 20 g
  Direct reading CM-% for 50 g
  Display illumination
  Retaining clip
  Selection of wood material characteristics (Mat)
  Individual log printing
  Maximum value display
  Measuring time display
  Measured value hold function
  Storing measured values on the PC via live data export
  Minimum value display
  Mode selection slide control
  Online check
  Logging option on site
  Splash guard
  Dust cover
  Manual temperature setting
  Temperature compensation
  Unit 2
  Non-destructive measurement method

 standard equipment

 optionally available

 not available

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