Description
CARBIDE HYGROMETER CM-B GANN PROFESSIONAL + ACCESSORIES
They have been the measuring instruments par excellence for over 50 years.
German technology and unparalleled precision, materials of the highest quality and innovative designs.
THEY ARE THE GANN HYGROMETER...
GANN PROFESSIONAL CM-B CARBIDE HYGROMETER
For the perfect measurement of residual humidity in screeds and cementitious materials of all kinds
Complete with:
-1 CYLINDER WITH PRESSURE GAUGE AND COVER
- 20 CARBIDE AMPOULES
- 1 MORTAR
- 1 CHISEL
- 1 HAMMER
- 1 BRUSH
- 1 SOFT CLOTH
- BRUSH
- Scoop
- SEALS
- INSTRUCTIONS AND WARRANTY
- MANUAL
- SPRING SCALE.
€ 599.00 VAT AND TRANSPORT INCLUSIVE.
PRODUCT DESCRIPTION AND ACCESSORIES IN THE CASE IN DETAIL:
HYDROMAT CM-B, BASIC VERSION, CARBIDE.
Chemical moisture meter for building materials that have set and of various materials according to the calcium carbide method, with direct indication CM %. Particularly suitable device for determining whether floors, substrates or walls are ready for installation. Robust suitcase type P (dimensions 500x430x120 mm) containing:
- 1 pressure bottle with lid and pressure gauge,
- 20 ampoules containing calcium carbide and 2 with test liquid,
- 1 mortar to grind the portion of material under examination,
- 1 flat chisel, a 1000 g mallet, a brush,
- 1 cloth to remove dust, a bottle brush,
- 1 spring balance with its support and container,
- A set of spheres,
- 1 scoop for material sample,
- Spare gaskets and instructions for use.
QUALITY GUARANTEE AND ASSISTANCE
DOWNLOAD THE CATALOG IN ITALIAN
WHAT ? A HYGROMETER?
Hygrometer
The hygrometer? an instrument that measures the humidity? relative air, or the relationship between the humidity? absolute, defined as the quantity? of water vapor present in the atmosphere at a given instant, and the humidity? of saturation, that is? the quantity? maximum water vapor that can? be present at a given temperature and pressure.
Both are expressed in terms of weight of water vapor per unit? of volume (kg/m3), while the humidity? relative, dimensionless, expressed as a percentage.
HAIR HYGROMETER
The most common genre common hygrometer ? the hair hygrometer, even if the commercial models use different systems.
A similar instrument, the hygrograph, measures the change in humidity in a given time interval. It essentially consists of a hygrometer associated with a recorder, be it mechanical (typically paper) or electronic.
Hair hygrometer:
The hair hygrometer is based on the variation of the length of a tuft of hair as the humidity varies. relative.
In fact, human hair has an elongation of about 2.5% between 0 and 100% humidity. relative. Isn't the variation? exactly proportional in a linear way with respect to the humidity? relative. The variation ? suitably amplified by a system of mechanical levers and then ? recorded mechanically, thanks to a writing tip and a clockwork device (hygrograph), or transformed into electrical impulses then processed with electronic instruments. Heart of the tool ? a long hair, carefully degreased for example with ether, mounted vertically in the instrument to prevent problems of accuracy and stability? of the measure, due to effects of suspension. The extremity? superior ? fixed, by means of tweezers, to a calibration screw which, by regulating its tension, allows the instrument to be calibrated. The lower part ? wound on the drum of the pointer of the instrument itself. In conditions of low humidity, the hair tends to get shorter
proportionally to the humidity values? relative environmental, making it possible cos? the measurement[1]. The hair hygrometer, due to its simplicity? and due to its relatively low cost, it is often used to build timepiece houses.
Isn't the tool? for? precise, and in the exclusively mechanical models pu? involve errors of 5-10% in part reducible with appropriate tables that account for the non-linearity? the variation in hair length. The error depends on the temperature at which it operates (below -30 °C the instrument does not work at all!) From time to time the instrument must be kept in saturated air,
what? it regenerates itself (if it is exposed outdoors, this regeneration normally takes place at night and poses no problems); furthermore it is subjected to calibration.
In the most types simple, calibration is often done by putting the instrument in a wet cloth for about half an hour and adjusting the index to 95%.
Electronic hygrometer:
The electronic hygrometer uses solid-state sensors which have the characteristic of varying their electrical parameters proportionally to the humidity value. related to which they are exposed. They can be resistive or capacitive. In both cases, the conditioning circuit uses a Wheatstone Bridge configuration[2] due to its great sensitivity, converting the resistive or capacitive variation into a measurable electrical signal. Electronic hygrometers are extremely precise and compact, even if they obviously need an energy source to work.
Wet bulb hygrometer:
The humid bulb hygrometer, or Assman hygrometer [3], exploits the drop in temperature caused by the natural evaporation of water. This temperature (also called dew point) is detected by a bulb thermometer placed in contact with a wet cloth, called wet bulb, and is compared with a similar thermometer which measures the real ambient temperature, called dry bulb. The two temperatures allow you to measure the humidity? relative environmental through a graph, said psychrometric diagram or Mollier diagram, which in addition to the humidity? relative pu? provide information also with respect to the enthalpy, the vapor pressure and the humidity? absolute.
ATTENTION:
TO HAVE THIS MATERIAL YOU MUST WAIT AT LEAST 8 WORKING DAYS.
