Microsoft word - referenzzellen_dbe.doc
Reference cells for capacitive humidity
High accuracy due to salt of Quality level
Different models with salt filling of 11% rH
High quality diaphragm for contact less
checking of measuring probes
Transparent housing for visual inspection of
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
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
Salt tables (summary)
With proper usage, the reference cells can be used
for over many years. If there is change in liquid
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.
The cells are available in two physical shapes with
nine different salt fillings each. The salts used are
of most pure laboratory grade. An overview of the
delivery program is available on our homepage.
Besides the standard models, unfilled membrane
containers as well as special designs are also
available. For further information, please contact
Reference cells with thread M20
x 1.5 mm, Scope of supply inclusive of mounting
Magnesium nitrate Sodium chloride
Reference cells with threads
For further information, please visit our
** Note: The value for 23 °C can be linearlyinterpolated from value of 20 °C and 25 °C.
ABOUT ANNUAL RETURNS AND ANNUAL DUTY History The lodgement of Annual Returns and payment of Annual Duty was originally instituted when the Companies Act, Act No. 61 of 1973 came into being, but those sections of the Act were repealed in about 1984. The Companies Office was originally run as a department of the Department of Trade and Industry. In recent years it has been set up as a se
Glucosamine, Chondroitin Sulfate, and the Two in Combination Daniel O. Clegg, M.D., Domenic J. Reda, Ph.D., Crystal L. Harris, Pharm.D., Marguerite A. Klein, M.S., James R. O’Dell, M.D., Michele M. Hooper, M.D., John D. Bradley, M.D., Clifton O. Bingham III, M.D., Michael H. Weisman, M.D., Christopher G. Jackson, M.D., Nancy E. Lane, M.D., John J. Cush, M.D., Larry W. Moreland, M.D., H. Ralp