GB/T 29476-2012General technical specification for mobile laboratory instruments and equipments (English PDF)

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

4.2 Classification by installation method

They can be divided into fixed instruments and equipment and non-fixed instruments and equipment.

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.

6.1 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. […]