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A summary
of the National measurement and calibration Laboratory (NMCL)
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The
National Lab for
measurement and
Calibration (NMCL) was
established in 1406 AH
(1986 AD) . it is the
first reference for
measurement and
Calibration in the
kingdom , The laboratory
is responsible for
maintaining and keeping |
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national /
reference / secondary and working standards ,
and enhancing their accuracy whenever required .
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Calibrating
the measurement instruments and standards by the
highest level of accuracy for governmental and
private agencies as well as GCC member states . |
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preparing and
revising the standards and regulations related
to measurement and calibration by consultation
and cooperation with SASO's different department
and the government related agencies and
standardization organization in GCC member
states .
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providing
support and assistance in the field of
measurement and calibration , issuing
certificates , issuing quality mark ,
accreditation as per iso (9001/1702) .
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Holding
programs and seminars for training the
individuals connected with measurement and
calibratim activities in the kingdom and GCC
member states in addition to facilitation the
means of obtaining related scientific and
technical publications .
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Participation
and assistance in measurement and calibration
activities at the national , semi-regional ,
regional and international level as a
representative of the government of Saudi Arabia
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Divisions
of the National measurement and calibration Laboratory (NMCL)
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I :
Physical Calibration
Division : |
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Dimentions
Laboration . |
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Volume and
Density Lab . |
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Thermometry
Lab . |
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II :
Mechanical Calibration Division : |
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Mass Lab . |
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Pressure Lab
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Force Lab . |
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III :
Electrical Calibration Division : |
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Frequency and
Time Lab . |
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Electrical
Measurements and Calibrations ( direct current
low frequency ). |
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IV :
Calibration supporting services Division : |
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Customer
Supporting services unit . |
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Lab
Supporting services unit . |
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Achievement of the
main measurement units in NMCL :
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Firest : Physical Calibration Division :
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Metre
(Length-measuring unit) |
it is
achieved by using the
apparatus of intervening
of Taser helium neon
accurately ( "2-5 part
in 10 " of laser
length) according to the
international definition
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kelvin (unit for
measuring temperature) |
it is
achieved by using 2
fixed points according
to the international
scale for temperature
degrees (ITS 90)from
merury point at
-
8344,
38oC
to silver point at
78,961o
C (
+
0001,0oC
to
03,0oC
) |
Second : mechanical Calibration Division :
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Kilogram (mass-measuring
unit) |
it is
achieve by using the
front model of the
national kilogram
(stainless steel )
calibrated by the
International Bureau for
weights and measurements
and having an estimated
uncertainty of ( +
15 microgram ). |
Third : Electrical Calibration :
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The second
(time-measuring unit). |
it is
achieved by using the portable atomic
seismic clock (2 parts in
10-12)
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Universal
mean time is generated (at SASO) using the
atomic seismic clock and comparing it to the
time received from satellites determining
the locations ( + 2-3 ms) .
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The Volt
(Voltage-measuring unit) |
it is
achieved through a group
of normal elements and
electronic voltage
standards based on zener
and maintained at a
high-constant
temperature ( + 2
microvolt ) .
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The Ohm
(electrical-resistance unit) |
it is
achieved by using a
group of normal
resistors of 1 ohm
maintained at a
high-constant
temperature (06.0+
micro ohm). |
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Customer Supporting
Services :
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1) |
Handling the customs
requests for calibration
according to "
Calibration Request Form
" , following up
reference of such
request to concerned
division with in the Lab
, revising their status
wtil calibration
procedures are completed
, and notifying
customers of all this .
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2) |
preparing the bills of
the calibration casts
for customers requests
and delivering them
directly to the customer
or faxing them with
fixing the time period
that calibration takes ,
and taking the
customer's agreement on
such bills before
sending the instruments
and starting their
calibration procedures
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3) |
Meeting the customers
and receiving the
instruments to be
calibration , and
helping them to complete
formats of receiving the
instruments after
inspecting them visually
by a technician in
concerned section in
order to refer them to
this section for
calibration .
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4) |
Keeping the instruments
before and after
calibration at services
supporting division for
reception or delivery to
customer |
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5) |
Delivering the
instruments to customer
after calibration with
calibration certificates
or measurement reports
of such instruments . |
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Following up the
customers’ complaints
and remarks and taking
necessary steps for the
correction of
noncompliance of
measurement and
calibration. |
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