HUMIDITY-REFERENCE CELLS REFZ-M20-xxRH Characteristic features
Reference cells for capacitive humidity
High accuracy due to salt of Quality level “Analytical reagent“
Different models with salt filling of 11% rH
High quality diaphragm for contact less checking of measuring probes
Transparent housing for visual inspection of saturation condition
Long life, refillable
Alternatively available with 1/2” or M20 x 1.5 mm connection threads Typical areas of application
Calibration of hygrometers
Defined humidity storage of probes
Humidification cell for research and experimental purposes Features Technical data Humidity reference cells
humidity probes as well as for use as humidity
standards in scientific applications. In the test
chamb er of the cell, a saturated salt solution is
created with a defined level of relative humidity.
The accuracy of humidity value in the reference
accuracy of +/-1% rH can be achieved.
The test chamber is separated from the solution by
a diaphragm so that the sensor under test is
protected against contamination by the solution.
irrespective of their placement and can be used in
both laid down or overhead mounted positions.
The complete humidity range of 11 % to 97 % rH is
covered through different models, which differ in
salt content. For checking purposes, at least one
cell is required. For adjustment of sensors, at least
two different cells (e.g. 11% rH and 75 % rH)
should be used. Complete sets are available for
For simple adaptation of the probe, the reference
cell is provided with a gland of 1/2" threads (e.g. forour pressure dew point probe) or M20 x 1.5 mm
mounting ensures airtight connection with the
Rights reserved for change in technical data due to
HUMIDITY-REFERENCE CELLS REFZ-M20-xxRH Salt tables (summary) Useful Life
With proper usage, the reference cells can be used
Lithium chloride Potassium acetate
for over many years. If there is change in liquid
Humidity value Humidity
level, the cells can be returned to our customer
service department for regeneration or re-filling.
For each service order, you can get a test report
with record of accuracy. Further information on
handling is enclosed with the cells. Packaging
The cells are available in two physical shapes with
nine different salt fillings each. The salts used are
Magnesium Potassium
of most pure laboratory grade. An overview of the
chloride carbonate
delivery program is available on our homepage. Humidity value Humidity
Besides the standard models, unfilled membrane
containers as well as special designs are also
available. For further information, please contact
Product variants REFZ-M20-xxRH: Reference cells with thread M20
x 1.5 mm, Scope of supply inclusive of mounting
Magnesium nitrate Sodium chloride REFZ-12Z-xxRH: Reference cells with threads Humidity value Humidity Complete sets M20-Thread Potassium Potassium nitrate chloride Humidity value Humidity 1/2“-Thread Potassium sulphate For further information, please visit our Humidity website: www.hygrosens.com
** Note: The value for 23 °C can be linearlyinterpolated from value of 20 °C and 25 °C.
“Ask Dr. J” The “Ask Dr. J” columns are authored monthly by Jennifer Christian, MD, MPH, President of Webility Corporation. See previous columns at www.webility.md. Dr. J’s columns also appear in the monthly Bulletin of the Disability Management Employer Coalition (DMEC). To purchase a book of Dr. J’s collected columns, go to www.dmec.org. The columns often summarize iss
CENTRE DE SANTÉ ET DE SERVICES SOCIAUX DU SUD-OUEST−VERDUN DISPONIBILITÉ DES MÉDICAMENTS INHALÉS POUR LE TRAITEMENT DE L’ASTHME ET DES MALADIES PULMONAIRES OBSTRUCTIVES CHRONIQUES (MPOC) Par : Micheline Viens, pharmacienne Le département de pharmacie, le service d’inhalothérapie et le service de pneumologie ont procédé à une révision des médicaments inhalés a
HUMIDITY-REFERENCE CELLS