HygroCal100 User’s Manual
Michell Instruments
35
MAINTENANCE
4.5 Calibration
The calibration of the control sensor is traceable to national standards. Calibrated
replacement control sensors can be ordered from Michell Instruments, or the system can
be adjusted with respect to any other hygrometer by means of the internal calibration
correction routine (see section 3.4.5.4).
A fi ve-point calibration certifi cate for the internal HygroSmart HS3 control sensor is
provided as standard with each instrument. In addition to this, the system is tested
as a whole at three points against a reference chilled mirror hygrometer. It is possible
to request the HygroCal100 with UKAS certifi cation, contact your Michell Instruments
representative for further information.
Michell Instruments Benelux B.V. Krombraak 11, Oosterhout, 4906 CR, The Netherlands
www.michell.com
Certificate of Conformity
Certificate of Conformity No.
Product Description
Product Order Code
Product Model Serial No.
Sales Order No.
Line No.
10000019
Humidity Calibrator Portable
HC100+B1+C0+D1+E3+F1+F5+F7+F8
PAA000321
22303
1
15 March 2016Configured Probe Functional Test Completed
Calibration Certificate
Interchangeable Sensor Order
Interchangeable Sensor Serial
Interchangeable Sensor Cal Date
HS3-S
SAA000338
15 March 2016
The above mentioned item has been calibrated at the following points in the Michell Instruments Humidity Calibration Laboratory against
the below Test Equipment traceable to the defined National Standard.
Reference Humidity %RH Observed Humidity %RH Difference %RH Permissible Difference %RH
15.10 15.56 0.46 +0.8/-0.8
30.10 30.79 0.69 +0.8/-0.8
50.15 50.85 0.70 +0.8/-0.8
70.20 70.77 0.57 +0.8/-0.8
90.44 90.55 0.11 +0.8/-0.8
Reference Temperature °C Observed Temperature °C Difference °C Permissible Difference °C
23.39 23.45 0.06 +0.2/-0.2
Calibration Reference Equipment
Type Serial Number Calibration Date Certificate No.
Humidity Generator GENHR01 11/07/12 2379MBW2012
Humidity Reference ETALTD02 01/08/13 H1318910E
Electrical Reference MNUM5708 05/02/15 C07E150295
Temperature Reference ETALTS03 20/11/14 TCB001
The uncertainties are based on a standard uncertainty multiplied by a coverage factor k=2, providing a level of confidence of
approximately 95%.
Michell Instruments certify that the above equipment has been designed, manufactured, tested and inspected in full
accordance with our quality assurance procedures and conforms to the requirements of the contract/purchase order.
Name Frank Lauwerijssen Quality Technician
Figure 35
Calibration Certifi cate Example
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