GB/T 11606-2007 English PDF (GBT11606-2007)

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GB/T 11606-2007: Methods of environmental test for analytical instruments
GB/T 11606-2007
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 19.040
N 50
Replacing GB/T 11606.1 ~ 11606.17-1989
Methods of environmental test for analytical
instruments
ISSUED ON: OCTOBER 11, 2007
IMPLEMENTED ON: DECEMBER 01, 2007
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of PRC;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3 
1 Scope ... 6 
2 General ... 6 
3 Power supply voltage and frequency test ... 10 
4 Low temperature test ... 11 
5 High temperature test ... 14 
6 Temperature change test ... 16 
7 Constant damp heat test ... 19 
8 Alternating damp heat test ... 21 
9 Vibration test ... 25 
10 Magnetic field test ... 28 
11 Air pressure test ... 30 
12 Sand dust test ... 32 
13 Mold growth test ... 37 
14 Salt spray test ... 43 
15 Low temperature storage test ... 45 
16 High temperature storage test ... 47 
17 Fall test ... 49 
18 Collision test ... 51 
Methods of environmental test for analytical
instruments
1 Scope
This standard specifies the general rules and methods of environmental test
methods for analytical instruments.
This standard applies to the selection of the environmental test of instruments,
which are required in the process of the research, development, design,
manufacture, sale, of all analytical instruments (hereinafter referred to as
instrument), for the purposes of ensuring the product quality, as well as in the
process of developing product standards.
2 General
2.1 Applicability
This general rule applies to all instruments. It specifies the grouping of
environmental condition, reference working conditions, test items, selection of
grouping of environmental condition, test procedures, test sequence of the
instrument.
2.2 Grouping of environmental condition
The instruments are divided into the following 4 basic groups, according to the
conditions of use and transportation and circulation (see Table 1 for details):
Group I: The ambient temperature and humidity are controlled within the
specified range, usually referring to a controllable environment, which has air-
conditioning equipment. This group is applicable to precision instruments.
Group II: Only the ambient temperature is controlled within the specified range,
usually referring to the indoor environment, which has general heat
preservation, heating and ventilation. This group is applicable to laboratory
instruments.
Group III: The ambient temperature and humidity are not controlled, usually
referring to the indoor environment, which has no heat preservation, heating
and ventilation. This group is applicable to industrial process instruments.
Group IV: The harsher environment where the ambient temperature and
humidity are not controlled, usually referring to the outdoor environment with or
without shelter. This group is applicable to outdoor use instruments.
2.3 Reference working conditions
Refer to Table 2, for reference values, ranges, tolerances of reference working
conditions.
Under the conditions of no objection, it is allowed to carry out test, at a
temperature of 15 °C ~ 25 °C, a relative humidity of 45% ~ 75%, an atmospheric
pressure of 86 kPa ~ 106 kPa, a power supply voltage of 220 V ± 22 V, a power
supply frequency of 50 Hz ± 0.5 Hz.
2.4 Test items
The test items include 16 items: power supply voltage and frequency test, low
temperature test, high temperature test, temperature change test, constant
damp heat test, alternating damp heat test, vibration test, magnetic field test,
air pressure test, sand dust test, mildew test, salt spray test, low temperature
storage test, high temperature storage test, drop test, collision test.
2.5 Selection of grouping of environmental conditions
2.5.1 For the product standards, it shall select the grouping of the environmental
conditions in 2.2. If a certain influence quantity (generally only one) is not
completely consistent with the environmental conditions of the specified group,
it shall be specified separately in the product standard.
2.5.2 When it is not feasible to test the whole machine for a large product, the
relevant standards shall provide for the test of those key parts or components.
2.5.3 The test items listed in Table 1 are the items that the instrument shall be
subject to. In special circumstances, it shall be according to relevant standards
OR negotiated by both the supplier and the buyer.
2.6 Test procedure
Each test usually includes the following contents (except for special items):
a) Pretreatment (if necessary);
b) Initial testing (if necessary);
c) Condition test;
d) Intermediate testing (if necessary);
Test the instrument according to relevant standards.
4.4.3 Condition test
4.4.3.1 Put the pre-processed instrument into the test box (chamber), at the
normal position, in the non-powered and "ready-to-use" state. At this time, the
temperature of the test box (chamber) is consistent with the temperature of the
instrument.
4.4.3.2 The temperature of the test box (chamber) is reduced to the specified
value, at a rate of change of not more than 1 °C/min (not more than the average
value of 5 min). At this time, the instrument is powered on AND maintained for
the specified test duration.
4.4.4 Intermediate testing
After the duration of the test is reached, the performance test shall be carried
out immediately, in accordance with the relevant standards.
4.4.5 Recovery
After the testing, cut off the power supply of the instrument, to stop working.
The temperature of the test box (chamber) is increased to the environmental
conditions of the instrument during the pretreatment, at a rate of change of not
more than 1 °C/min. After reaching the temperature, it will be restored for 1 h ~
2 h.
4.4.6 Final testing
Test the instrument according to relevant standards.
4.5 Information to be given by relevant standards
When the relevant standards adopt this method, it shall give the following
detailed rules as applicable as possible:
a) Pretreatment;
b) Initial testing items and requirements;
c) The duration of test;
d) Intermediate testing items and requirements;
e) Final testing items and requirements;
f) Any changes to the test procedure, as agreed by the supplier and the buyer.
The duration of the instrument temperature test shall be selected from the
following:
2 h, 4 h, 8 h, 16 h.
5.4 Test procedure
5.4.1 Pretreatment
Place the instrument under normal (or reference) environmental conditions, to
achieve temperature equilibrium.
5.4.2 Initial testing
Test the instrument according to relevant standards.
5.4.3 Condition test
5.4.3.1 Put the pre-processed instrument into the test box (chamber), at the
normal position, in the non-powered and "ready-to-use" state. At this time, the
temperature of the test box (chamber) is consistent with the temperature of the
instrument.
5.4.3.2 The temperature of the test box (chamber) is increased to the specified
value, at a rate of change of not more than 1 °C/min (not more than the average
value of 5 min). At this time, the instrument is powered on AND maintained for
the specified test duration.
5.4.4 Intermediate testing
After the duration of the test is reached, the performance test shall be carried
out immediately, in accordance with the relevant standards.
5.4.5 Recovery
After...