GB/T 29476-2012 PDF English
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| GB/T 29476-2012 | English | 220 |
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General technical specification for mobile laboratory instruments and equipment
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GB/T 29476-2012: General technical specification for mobile laboratory instruments and equipment---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT29476-2012
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 19.020; 17.020
N 50
General technical specification for mobile laboratory
instruments and equipment
Issued on. DECEMBER 31, 2012
Implemented on. JULY 31, 2013
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 5
4 Classification... 6
5 Requirements... 7
6 Test methods... 10
Bibliography... 14
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard was proposed by and shall be under the jurisdiction of National Technical
Committee on Mobile Laboratory of Standardization Administration of China
(SAC/TC 509).
The drafting organizations of this Standard. Beijing Puxi General Instrument Co., Ltd.,
Shenyang Winbid Mobile Experiment Technology Research Institute Co., Ltd.,
Shenyang Product Quality Supervision and Inspection Research Institute, Shanghai
Institute of Metrology and Testing Technology, Henan Institute of Metrology, Beijing
Agricultural Product Quality Inspection and Farmland Environmental Monitoring
Technology Research Center, China National Accreditation Center for Conformity
Assessment.
Main drafters of this Standard. Zhang Baojie, Chen Xuehui, Qian Dading, Pan Ligang,
Ma Ruisong, Liu Yanjie, Zheng Yi, Zhang Kai, Hou Boyan, Qiu Zhilong, Huang Shijun,
Ji Liming.
General technical specification for mobile laboratory
instruments and equipment
1 Scope
This Standard specifies the terms and definitions, classification, technical requirements,
test methods for mobile laboratory instruments and equipment.
This Standard applies to mobile laboratory testing, calibration or scientific experiment
instruments and their auxiliary equipment used on land.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 2423.1, Environmental testing for electric and electronic products - Part 2.
Test methods - Tests A. Cold
GB/T 2423.2, Environmental testing for electric and electronic products - Part 2.
Test methods - Tests B. Dry heat
GB/T 2423.3, Environmental testing for electric and electronic products - Part 2.
Testing method - Test Cab. Damp heat, steady state
GB/T 2423.5, Environmental testing - Part 2.Test methods - Test Ea and guidance.
Shock
GB/T 2423.8, Environmental testing for electric and electronic products - Part 2.
Test methods - Test Ed. Free fall
GB/T 2423.17, Environmental testing for electric and electronic products - Part 2.
Test method - Test Ka. Salt mist
GB/T 2423.21, Environmental testing - Part 2.Test methods - Test M. Low air
pressure
GB/T 2423.56, Environmental testing - Part 2.Test methods - Test Fh. Vibration,
broadband random and guidance
3 Terms and definitions
For the purposes of this document, the terms and definitions defined in GB/T 29479 as
well as the followings apply. For ease of use, some terms and definitions in GB/T 29479
are repeated below.
3.1 mobile laboratory
a laboratory that meets specific purposes and requirements and is composed of complete
sets of devices to carry out activities such as testing, calibration or scientific
experiments in mobile facilities and environments
3.2 mobile laboratory shelter
the cabin that is used to carry mobile laboratory experimenters, testing equipment,
calibration equipment and related professional facilities, and can provide a suitable
operating environment for normal activities such as testing, calibration or scientific
experiments
[GB/T 29479, definition 3.3]
3.3 instruments & equipment for mobile laboratory
the instruments and their auxiliary equipment that are installed, carried and stored in
mobile laboratories for testing, calibration or scientific experiments
3.5 fixation
the instruments and equipment are in contact with the experimental cabin or the
experimental table and are fastened with fastening devices, and there is no relative
displacement with the body or surface
3.6 influence quantity
test parameters used in a state that represent an aspect of the working environment of
an instrument; it is a test parameter for changes in instruments and equipment caused
by changes in the external environment caused by movement
3.7 additional influence quantity
the amount by which the measured and calibrated values of the mobile laboratory
equipment deviate from the original threshold due to the amount of influence (e.g.,
vibration, drop, environmental change)
3.9 connector
the connection end of water, electricity, gas and auxiliary equipment and transmission
equipment required for the normal operation of instruments and equipment
4 Classification
4.1 Classification according to the mobile state of the laboratory shelter
4.2 Classification by installation method
They can be divided into fixed instruments and equipment and non-fixed instruments
and equipment.
5 Requirements
5.1 General requirements
5.1.1 Power supply
The instruments and equipment shall be equipped with two or more power interfaces
or conversion adapters of different types of voltages, such as AC 220V, DC 24V or DC
12V.
5.1.2 Interface compatibility
If the instruments and equipment have input and output requirements such as water
supply, gas supply, and data transmission, their input and output interfaces shall match
those of the experimental cabin. Or provide conversion adapters that meet the universal
design requirements of mobile laboratories.
5.1.3 Shockproof
The instruments and equipment shall be installed firmly and reliably. Fixed installation
of instruments and equipment shall be designed with at least 2 installation points at the
bottom or side.
5.1.4 Supportability
The instruments and equipment shall have the function of fault alarm and automatic
diagnosis. Necessary tools and spare parts shall be provided to ensure that the
instruments and equipment can be quickly restored to working condition after on-site
maintenance.
5.1.8 Identification
The instruments and equipment shall be marked with the parameters of the working
environment in the obvious position of the product. Parameter indicators shall include.
recovery time (h), operating temperature range (°C), relative humidity range (%),
random vibration acceleration spectral density (m2/s3), drop height (mm), impact
acceleration (m/s2).
5.2 Environmental adaptability
5.2.1 Temperature
The instruments and equipment shall at least ensure that the temperature environment
works normally within the range of 10°C~35°C, and is transported and stored within
the range of -40°C~55°C.
5.3 Transport resistance
5.3.1 Random vibration
The instruments and equipment shall at least be guaranteed to work, transport and store
normally in a random vibration environment with a frequency range of (5~500) Hz and
an acceleration spectral density of 0.05m2/s3.
5.3.2 Impact
The instruments and equipment shall at least ensure that they can work normally under
the condition of peak acceleration of 50m/s2.
5.4 Electromagnetic compatibility
5.4.1 Immunity
The instruments and equipment shall meet the electromagnetic environment immunity
requirements specified in Table 1 of 6.2 of GB/T 18268.1-2010.
5.4.2 Emission
The instruments and equipment shall meet the requirements of emission limits specified
in 7.2 of GB/T 18268.1-2010.
5.5 Safety
5.5.1 Warning signs
The instruments and equipment shall have warning signs against electric shock. For the
instruments and equipment with ultraviolet radiation or heating devices, there shall also
be warning signs against ultraviolet radiation and scalding danger.
5.5.2 Electric shock resistance
5.5.2.1 Dielectric strength
When the input voltage of the instruments and equipment is higher than the safe voltage,
it shall generally be able to withstand the voltage test of 2210V AC RMS for continuous
5s. There shall be no flashover or breakdown.
6 Test methods
6.1 General requirements
6.1.1 Power supply
Visually inspect the type and identification of the power input interface of the
instruments and equipment, and the measures to prevent the interface from falling off.
6.1.5 Quick recovery
First, measure the fixed recovery time of the instruments and equipment in a static state.
Then measure the recovery time after the movement stops. For the instruments and
equipment that start running in the moving state, it also needs to measure the recovery
time when running during the moving process.
6.1.6 Additional influence quantity
After completing the environmental test in 6.3.1~6.3.3, measure according to the
product standard or normative document of the instruments and equipment.
6.1.7 Reliability
The reliability of instruments and equipment shall be carried out according to the
method specified in QC/T 252.
6.2 Environmental adaptability
6.2.1 Temperature
The low temperature working and storage test shall be tested according to the method
specified in GB/T 2423.1.The high temperature working and storage test shall be tested
according to the method specified in GB/T 2423.2.
6.2.2 Humidity
The damp heat test shall be tested according to the method specified in GB/T 2423.3.
6.3 Transport resistance
6.3.1 Random vibration
The instruments and equipment working in the mobile state shall generally be in the
working state during the test. The instruments and equipment that work after the
movement stops and resumes are generally in a non-working state during the test. The
random vibration test shall be tested according to the method specified in GB/T 2423.56.
6.4 Electromagnetic compatibility
6.4.1 Immunity
The electromagnetic compatibility immunity test shall be tested according to the
method specified in the basic standard in Table 1 of 6.2 of GB/T 18268.1-2010.The
performance criterion can refer to the method specified in 6.4 of GB/T 18268.1-2010.
6.4.2 Emission
The electromagnetic compatibility emission test shall be tested according to the method
specified in 7.2 of GB/T 18268.1-2010.
6.5 Safety
6.5.1 Warning marks
Use a cloth dampened with the prescribed cleaner (if not specified, then with isopropyl
alcohol). Wipe with hands for 30s without undue pressure.
6.5.2 Dielectric strength
6.5.3 Contact current
Connect the power supply of the instruments and equipment to the touch current tester.
The power of the instruments and equipment is placed in the ON position. Test once
under normal conditions. Test once under a single fault condition. Record the contact
current value.
6.5.7 Overflow
Fill the container completely with liquid. Then use an additional volume equal to 15%
of the container capacity or 0.25L. Take whichever is larger. Pour in smoothly for 60s.
For instruments and equipment that may be moved after the container is filled with
liquid, tilt the instruments and equipment 15° in the most unfavorable direction from
its normal use position.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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