Some standard content:
ICS 75.180 .01
Registration number: 6839-2000
Petroleum and natural gas industry standard of the People's Republic of China SY/T5429-2000
Small diameter flowrate and watercut logging tool2000-03-10 Issued
State Administration of Petroleum and Chemical Industry
2000-10-01 Implementation
SY/T 5429--2000
This standard is a revision of SY/T5429-91 (Small diameter flow water content tester). The main differences between this standard and SY/T5429-91 are as follows: 4 reference standards are added to Chapter 2 of the original standard; the original standard "3 structural type" is changed to "3 composition and principle"; the original standard "4 technical requirements" is changed to "4 requirements", the environmental conditions of the instrument are improved, the relevant performance indicators, reliability indicators and appearance requirements are added, and the requirement that the outer diameter 32mm instrument is suitable for the nominal diameter of the casing 7in (177.8mm) is added; the original standard "5 test method" is also changed to correspond to Chapter 4 Some inspection items have been added to this chapter, and some test methods have been adjusted or appropriate content has been added:
This standard will replace SY/T5429-91 from the date of implementation. This standard is proposed by China National Petroleum Corporation. This standard is under the jurisdiction of the Petroleum Instrumentation Professional Standardization Committee, and the drafting unit of this standard is: Rapeseed Oil Technology Research Institute of Jianghan Petroleum Administration Bureau. The main drafters of this standard are Wang Peilie, Wu Chaodong, and Zhao Zhongjian. This standard was first issued in January 1992, and this is the first revision. 1 Scope
Petroleum and Natural Gas Industry Standard of the People's Republic of China Small diameter flowrate and watercut Jogging toolSY/T 5429--2000
Replaces SY/T5429-91
This standard specifies the composition, requirements, test methods, inspection rules, marking, packaging, transportation and storage of small diameter flow water content tester (hereinafter referred to as instrument).
This standard is applicable to the manufacture and inspection of instruments for testing pumping units and stratified liquid production and water content. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised and the use of this standard All parties should explore the possibility of using the latest versions of the following standards. GB191-1990 Packaging, storage and transportation pictorial marks
GB/T13384-1992 General technical conditions for packaging of electromechanical productsSY/T5134-93 Basic environmental test methods for petroleum exploration and development instrumentsTest G: Vibration (sinusoidal) testSY/T5218--91 Basic environmental test methods for petroleum exploration and development instrumentsTest A: High temperature testSY/T5362-1995 Production logging oil, gas and water flow simulation test device3 Composition and principle
The instrument consists of a lower instrument and a surface instrument. The lower instrument consists of a flow meter, a water content meter, an umbrella-type current collector and a magnetic locator: The surface instrument can use the currently popularized numerical control ground measurement system. The umbrella-type current collector is used to isolate the annular space between the instrument and the oil well casing. When the Mou-type current collector works, it forces the fluid below the current collector to flow through the flow meter and the water content meter, thereby measuring the liquid flow and water content of the production layer below the instrument. 4 Requirements
4.1 Downhole instrument environmental conditions.
4.1.1 The maximum working pressure and maximum working temperature are shown in Table 1. Table 1 Instrument maximum working pressure and temperature Maximum working pressure
Maximum working temperature
4.1.2 Vibration:
a) Acceleration: 29.4m/=2.5m/s;
b) Frequency range: 5～55～5Hz;
) Sweep frequency rate: luct/min:
d) Test time: 230min.
Approved by the State Administration of Petroleum and Chemical Industry on 2000-03-1030
Implemented on 2000-10-01
4.2 Surface instrument environmental conditions.
4.2.1 Working temperature: 0~45℃.
4.2.2Relative humidity: ≤90%.
4.2.3Vibration:
a) Acceleration: 19.6m/s;
b) Frequency range: 5~55~5Hz
c) Frequency sweep rate: loct/min;
d) Test time: ≥30min.
4.3 Flow test range and allowable error:
SY/T5429—2000
a) Full flow collection: 2~30m2/d, allowable error ±5%FS; b) Partial flow collection: 5~60m/d (flow collection umbrella with 2 windows Φ10mm), allowable error ±5%FS; 10~100m/d (flow collection umbrella with 4 windows Φ10mm), allowable error ±8%FS: 15~150m/d (flow collection umbrella with 4 windows Φ12mm), allowable error ±8%FS; 4.4 Water content test range and allowable error: 0~100%, allowable error ±10%FS. 4.5 When the water content meter rises from room temperature to the highest working temperature, the temperature drift of the air value is no more than 100Hz. The instrument output flow and water content electrical signal amplitude are no less than 1Vp-po4.6
The outer diameter of the umbrella-type current collector with an outer diameter of 25mm is 128~132mm when opened (applicable to the inner diameter of the casing with an inner diameter of 121~124mm). 4.7
The outer diameter of the umbrella-type current collector with an outer diameter of 32mm is 166~170rmm when opened (applicable to the inner diameter of the casing with an inner diameter of 155~160mm). 4.8
When the speed is 800~2000m/h, the output voltage peak of the magnetic locator is greater than 30mV. 4.10
External power supply: AC220V±22V: frequency 50Hz±2Hz. Power supply for the downhole instrument detection circuit: DC0~100V, maximum current 100mA. Power supply for the collector of the downhole instrument: DC0~450V, maximum current 2A. Minimum pulse voltage amplitude received by the surface instrument: 0.1Vp-p Frequency measurement allowable error: ±0.01%F·S. 4.13bzxz.net
Mean time between failures (MTBF) is not less than 120h. 4.14
4.15Appearance: The threaded connection of the downhole instrument is tight and not loose, the mesh is clear, the surface is bright and rust-free, and the instrument has no obvious bending; there is no obvious scratch on the surface of the surface instrument, the layout of the components on the panel is reasonable, the installation is firm, and the operation is flexible. 5 Test methods
5.1 Test equipment
a) High-pressure test device (70MPa);
b) Temperature test chamber (0~200℃, ±1℃);c) Vibration test bench;
d) Signal generator (1Hz～1MHz);
e) Oscilloscope (0~20MHz):
f) Megaohmmeter (500V);
g) Production logging oil, gas and water flow simulation test device:h) Digital frequency meter (1Hz~1MHz, ±0.01%);i) Voltage regulator (1~2kw).
5.2 Test items
5.2.1 Environmental test
5.2.1.1 Withstand pressure test:
The casing of the downhole instrument (except the collector part) is placed in a high-pressure test device and pressurized to the maximum working pressure. It is maintained for 30 minutes and the instrument has no leakage. After the pressure test, the insulation resistance of the sealing plug lead is checked with a megohmmeter and should be greater than 50MQ. 2
5.2.1.2 Temperature test:
SY/T5429—2000
a) The electronic circuit part of the downhole instrument is placed in a temperature test box and heated to the maximum working temperature according to the method of SY/T5218. The temperature drift of the air value of the water content meter meets the requirements of 4.5, and the frequency value of the flowmeter is 0Hz. Use a signal generator to input a sine wave signal with a simulated flow rate of 1~500Hz (interval 20Hz) and an amplitude of 10mV. The output value of the surface instrument and the input value of the downhole instrument are less than ±0.1Hz. b) The surface instrument is placed in a temperature test box, and the temperature is controlled according to the method of SY/T5218 and the requirements of 4.2.1. The positive and negative pulse signals of flow rate and water content are input by the downhole instrument. The results should meet the requirements of 4.13. 5.2.1.3 Vibration test:
The downhole instrument and the surface instrument are tested according to the method of SY/T5134 and the requirements of 4.1.2 and 4.2.3 respectively. After the test, all parts of the instrument should be intact and work normally. 5.2.2 Instrument calibration inspection
It is carried out in the production logging oil, gas and water flow simulation test device. The calibration device is in accordance with the requirements of SYT5362, and the test media are fresh water and diesel.
5.2.2.1 Place the instrument with the full flow collector in the simulated well casing, so that the collector isolates the casing with an inner diameter of 124mm or 160mm. 5.2.2.2 The flow rate is stabilized at 10m/d, and media with water contents of 0%, 30%, 70% and 100% are prepared, and the instrument is calibrated. 5.2.2.3 Change the flow rate to 20m/d and 30m3/d respectively, and prepare the water content calibration instrument according to 5.2.2.2. 5.2.2.4 Stabilize each standard flow rate and each corresponding water content for three measurements, and record the measurement results to obtain the average value. According to the average value of the measurement results, find out the test flow rate and water content according to the instrument interpretation chart. 5.2.2.5 Calculate the measurement error of the test flow rate according to formula (1), and its maximum error should meet the requirements of 4.3. ×10%
Wherein: 8—Flow measurement error:
Qt—Test flow, m/d;
Q—Standard flow, m/d;
Qw is the full-scale value of the flow tested by the instrument under the corresponding flow collection conditions, m/d. 5.2.2.6 Calculate the measurement error of the test moisture content according to formula (2), and its maximum error shall meet the requirements of 4.4. SL-S×100%
Wherein: as—Moisture content measurement error;
SL——Test moisture content;
S——Standard moisture content;
Sw—The full-scale moisture content of the instrument test, i.e. 100%. 5.2.3 Technical performance test
·(2)
5.2.3.1 Use a signal generator to input a 1~500Hz (20Hz interval) sine wave signal with an amplitude of about 10mV from the flow signal input line terminal. The instrument frequency output value and input value should be less than ±0.1Hz. The instrument output peak voltage measured by an oscilloscope should meet the requirements of 4.6. 5.2.3.2 Power the instrument collector and open the collector umbrella. The result should meet the requirements of 4.7 or 4.8. 5.2.3.3 Use an iron tool to slide on the outer shell of the magnetic locator at a sliding speed of 0.2~0.5m/s. Use an oscilloscope to check that the output amplitude of the magnetic locator meets the requirements of 4.9.
5.2.4 Power supply test
5.2.4.1 Connect the voltage regulator to the surface instrument and the downhole instrument, change the input voltage AC198~242V, and the result should meet the requirements of 4.13. 5.2.4.2 Use a 100W sliding line rheostat as the power load to adjust the power supply of the downhole instrument. Its output voltage and current should meet the requirements of 4.11.
5.2.4.3 Use a 1000W heater (resistance of about 225Ω) as the power load to adjust the collector power supply of the downhole instrument. Its output voltage and current should meet the requirements of 4.12.
5.2.5 Reliability test
SY/T 5429--2000
Randomly select \ instruments, turn on the equipment at the same time under the conditions required by this standard or under the conditions of on-site use, power on for 6 hours and power off for 4 hours as a working cycle, input a sine wave signal of 50Hz simulating flow, and the flow and water circuits should be able to work normally. In each working cycle, the collector opens and closes the umbrella 8 times, the working price is normal, and meets the requirements of 4.7 and 4.8. After multiple cycles of continuous testing, the average trouble-free working time is calculated according to formula (3), and the result should meet the requirements of 4.14. MTBF
R,=0
In the formula: MTBF
Mean trouble-free working time, h;
T,——Continuous test working time of the i-th instrument, h; R—Number of failures during the assessment of the i-th instrument; n——Number of instruments participating in the test.
5.2.6 Appearance inspection
The appearance inspection by visual inspection shall meet the requirements of 4.15. 6 Inspection rules
Instrument inspection is divided into factory inspection and type inspection. 6.1 Factory inspection
6.1.1 Regardless of the batch size, each instrument shall be inspected before delivery. 6.1.2 The items and requirements of factory inspection are shown in Table 2. Instrument inspection items list
Inspection items
Withstand voltage test
Temperature test
Vibration test
Scale inspection
Technical performance test
Power supply test
Reliability test
Appearance inspection
Technical requirements
4.1.1, 4.5, 4.13
4.1.2, 4.2.3
4.6, 4.7、4.8, 4.9
4.10, 4.11, 4.12
Let: indicates mandatory inspection items, indicates items that may not be inspected. 6.2 Type inspection
Test method
6.2.1 If the instrument belongs to any of the following conditions, type inspection should be carried out. a) When a new product is being trial-produced;
Inspection type
Type inspection
Factory inspection
b) After formal production, if there are major changes in design, structure, material or process, which may affect product performance; c) When the cumulative batch production is more than 200; 4
d) When the product is discontinued for two years and production is resumed; SY/T 5429—2000
e) When the results of the factory inspection are significantly different from those of the last type inspection: f) When the national quality supervision agency or the superior quality inspection department makes a request. 6.2.2 Type inspection items are shown in Table 2.
6.2.3 The random sampling scheme for type inspection items is shown in Table 3 Table 3 Random sampling scheme for type inspection
9: -15
26 -- 50
51 ~90
91 -150
6.3 Judgment rules
Recommended sample size
6.3.1 The instrument can only be shipped after all the factory inspection items are qualified Maximum sample size
6.3.2 If any item of the instrument fails in the type inspection, double sampling inspection shall be carried out; if there are still unqualified items, the batch of instruments shall be judged as unqualified.
7 Marking, packaging, transportation and storage
7.1 Marking
7.1.1 The instrument shall have the following product markings when it leaves the factory: a) Instrument model and name;
b) Manufacturer name and trademark;
c) Date of publication and factory number:
d) Product standard number:
7.1.2 Packaging marking: The outer packaging of the instrument shall have the shipping and receiving markings and the packaging storage and transportation pictorial markings, which shall comply with the requirements of GB191. 7.2 Packaging
7.2.1 The instrument packaging must comply with the requirements of GB/T13384. 7.2.2 The accompanying technical documents should include:
a) Certificate of Conformity;
b) Operating Instructions;
c) Mechanical Assembly Drawing;
d) Circuit Schematic Diagram;
e) Circuit Component Arrangement Diagram;
f) Packing List.
7.3 Transportation
The instrument is suitable for transportation by car, ship, airplane, etc., and should be protected from rain and snow during transportation. 7.4 Storage
The instrument should be stored in a dry, wind-free environment at room temperature: For long-term storage, it should be unpacked and powered on for inspection regularly (no more than six months). 53 Use an iron tool to slide on the outer shell of the magnetic locator at a sliding speed of 0.2~0.5m/s. Use an oscilloscope to check that the output amplitude of the magnetic locator should meet the requirements of 4.9.
5.2.4 Power supply test
5.2.4.1 Connect the voltage regulator to the surface instrument and the downhole instrument, change the input voltage AC198~242V, and the result should meet the requirements of 4.13. 5.2.4.2 Use a 100W sliding line rheostat as the power load to adjust the power supply of the downhole instrument. Its output voltage and current should meet the requirements of 4.11.
5.2.4.3 Use a 1000W heater (resistance of about 225Ω) as the power load to adjust the collector power supply of the downhole instrument. Its output voltage and current should meet the requirements of 4.12.
5.2.5 Reliability test
SY/T 5429--2000
Randomly select \ instruments, turn on the equipment at the same time under the conditions required by this standard or under the conditions of on-site use, power on for 6 hours and power off for 4 hours as a working cycle, input a sine wave signal of 50Hz simulating flow, and the flow and water circuits should be able to work normally. In each working cycle, the collector opens and closes the umbrella 8 times, the working price is normal, and meets the requirements of 4.7 and 4.8. After multiple cycles of continuous testing, the average trouble-free working time is calculated according to formula (3), and the result should meet the requirements of 4.14. MTBF
R,=0
In the formula: MTBF
Mean trouble-free working time, h;
T,——Continuous test working time of the i-th instrument, h; R—Number of failures during the assessment of the i-th instrument; n——Number of instruments participating in the test.
5.2.6 Appearance inspection
The appearance inspection by visual inspection shall meet the requirements of 4.15. 6 Inspection rules
Instrument inspection is divided into factory inspection and type inspection. 6.1 Factory inspection
6.1.1 Regardless of the batch size, each instrument shall be inspected before delivery. 6.1.2 The items and requirements of factory inspection are shown in Table 2. Instrument inspection items list
Inspection items
Withstand voltage test
Temperature test
Vibration test
Scale inspection
Technical performance test
Power supply test
Reliability test
Appearance inspection
Technical requirements
4.1.1, 4.5, 4.13
4.1.2, 4.2.3
4.6, 4.7、4.8, 4.9
4.10, 4.11, 4.12
Let: indicates mandatory inspection items, indicates items that may not be inspected. 6.2 Type inspection
Test method
6.2.1 If the instrument belongs to any of the following conditions, type inspection should be carried out. a) When a new product is being trial-produced;
Inspection type
Type inspection
Factory inspection
b) After formal production, if there are major changes in design, structure, material or process, which may affect product performance; c) When the cumulative batch production is more than 200; 4
d) When the product is discontinued for two years and production is resumed; SY/T 5429—2000
e) When the results of the factory inspection are significantly different from those of the last type inspection: f) When the national quality supervision agency or the superior quality inspection department makes a request. 6.2.2 Type inspection items are shown in Table 2.
6.2.3 The random sampling scheme for type inspection items is shown in Table 3 Table 3 Random sampling scheme for type inspection
9: -15
26 -- 50
51 ~90
91 -150
6.3 Judgment rules
Recommended sample size
6.3.1 The instrument can only be shipped after all the factory inspection items are qualified Maximum sample size
6.3.2 If any item of the instrument fails in the type inspection, double sampling inspection shall be carried out; if there are still unqualified items, the batch of instruments shall be judged as unqualified.
7 Marking, packaging, transportation and storage
7.1 Marking
7.1.1 The instrument shall have the following product markings when it leaves the factory: a) Instrument model and name;
b) Manufacturer name and trademark;
c) Date of publication and factory number:
d) Product standard number:
7.1.2 Packaging marking: The outer packaging of the instrument shall have the shipping and receiving markings and the packaging storage and transportation pictorial markings, which shall comply with the requirements of GB191. 7.2 Packaging
7.2.1 The instrument packaging must comply with the requirements of GB/T13384. 7.2.2 The accompanying technical documents should include:
a) Certificate of Conformity;
b) Operating Instructions;
c) Mechanical Assembly Drawing;
d) Circuit Schematic Diagram;
e) Circuit Component Arrangement Diagram;
f) Packing List.
7.3 Transportation
The instrument is suitable for transportation by car, ship, airplane, etc., and should be protected from rain and snow during transportation. 7.4 Storage
The instrument should be stored in a dry, wind-free environment at room temperature: For long-term storage, it should be unpacked and powered on for inspection regularly (no more than six months). 53 Use an iron tool to slide on the outer shell of the magnetic locator at a sliding speed of 0.2~0.5m/s. Use an oscilloscope to check that the output amplitude of the magnetic locator should meet the requirements of 4.9.
5.2.4 Power supply test
5.2.4.1 Connect the voltage regulator to the surface instrument and the downhole instrument, change the input voltage AC198~242V, and the result should meet the requirements of 4.13. 5.2.4.2 Use a 100W sliding line rheostat as the power load to adjust the power supply of the downhole instrument. Its output voltage and current should meet the requirements of 4.11.
5.2.4.3 Use a 1000W heater (resistance of about 225Ω) as the power load to adjust the collector power supply of the downhole instrument. Its output voltage and current should meet the requirements of 4.12.
5.2.5 Reliability test
SY/T 5429--2000
Randomly select \ instruments, turn on the equipment at the same time under the conditions required by this standard or under the conditions of on-site use, power on for 6 hours and power off for 4 hours as a working cycle, input a sine wave signal of 50Hz simulating flow, and the flow and water circuits should be able to work normally. In each working cycle, the collector opens and closes the umbrella 8 times, the working price is normal, and meets the requirements of 4.7 and 4.8. After multiple cycles of continuous testing, the average trouble-free working time is calculated according to formula (3), and the result should meet the requirements of 4.14. MTBF
R,=0
In the formula: MTBF
Mean trouble-free working time, h;
T,——Continuous test working time of the i-th instrument, h; R—Number of failures during the assessment of the i-th instrument; n——Number of instruments participating in the test.
5.2.6 Appearance inspection
The appearance inspection by visual inspection shall meet the requirements of 4.15. 6 Inspection rules
Instrument inspection is divided into factory inspection and type inspection. 6.1 Factory inspection
6.1.1 Regardless of the batch size, each instrument shall be inspected before delivery. 6.1.2 The items and requirements of factory inspection are shown in Table 2. Instrument inspection items list
Inspection items
Withstand voltage test
Temperature test
Vibration test
Scale inspection
Technical performance test
Power supply test
Reliability test
Appearance inspection
Technical requirements
4.1.1, 4.5, 4.13
4.1.2, 4.2.3
4.6, 4.7、4.8, 4.9
4.10, 4.11, 4.12
Let: indicates mandatory inspection items, indicates items that may not be inspected. 6.2 Type inspection
Test method
6.2.1 If the instrument belongs to any of the following conditions, type inspection should be carried out. a) When a new product is being trial-produced;
Inspection type
Type inspection
Factory inspection
b) After formal production, if there are major changes in design, structure, material or process, which may affect product performance; c) When the cumulative batch production is more than 200; 4
d) When the product is discontinued for two years and production is resumed; SY/T 5429—2000
e) When the results of the factory inspection are significantly different from those of the last type inspection: f) When the national quality supervision agency or the superior quality inspection department makes a request. 6.2.2 Type inspection items are shown in Table 2.
6.2.3 The random sampling scheme for type inspection items is shown in Table 3 Table 3 Random sampling scheme for type inspection
9: -15
26 -- 50
51 ~90
91 -150
6.3 Judgment rules
Recommended sample size
6.3.1 The instrument can only be shipped after all the factory inspection items are qualified Maximum sample size
6.3.2 If any item of the instrument fails in the type inspection, double sampling inspection shall be carried out; if there are still unqualified items, the batch of instruments shall be judged as unqualified.
7 Marking, packaging, transportation and storage
7.1 Marking
7.1.1 The instrument shall have the following product markings when it leaves the factory: a) Instrument model and name;
b) Manufacturer name and trademark;
c) Date of publication and factory number:
d) Product standard number:
7.1.2 Packaging marking: The outer packaging of the instrument shall have the shipping and receiving markings and the packaging storage and transportation pictorial markings, which shall comply with the requirements of GB191. 7.2 Packaging
7.2.1 The instrument packaging must comply with the requirements of GB/T13384. 7.2.2 The accompanying technical documents should include:
a) Certificate of Conformity;
b) Operating Instructions;
c) Mechanical Assembly Drawing;
d) Circuit Schematic Diagram;
e) Circuit Component Arrangement Diagram;
f) Packing List.
7.3 Transportation
The instrument is suitable for transportation by car, ship, airplane, etc., and should be protected from rain and snow during transportation. 7.4 Storage
The instrument should be stored in a dry, wind-free environment at room temperature: For long-term storage, it should be unpacked and powered on for inspection regularly (no more than six months). 53 Judgment rules
Recommended sample size
6.3.1 The instrument can only be shipped after all the factory inspection items are qualified. Maximum sample size
6.3.2 If any item of the instrument fails in the type inspection, double sampling inspection shall be carried out; if there are still unqualified items, the batch of instruments shall be judged to be unqualified.
7 Marking, packaging, transportation and storage
7.1 Marking
7.1.1, when the instrument leaves the factory, it shall have the following product markings: a) instrument model and name;
b) manufacturer name and trademark;
c) date of manufacture and factory number:
d) product standard number:
7.1.2 Packaging marking: the outer packaging of the instrument shall have the shipping and receiving mark and the packaging storage and transportation pictorial mark, which shall meet the requirements of GB191. 7.2 Packaging
7.2.1 The instrument packaging must meet the requirements of GB/T13384. 7.2.2 The accompanying technical documents should include:
a) Certificate of conformity;
b) Operating instructions;
c) Mechanical assembly drawing:
d) Circuit schematic diagram;
e) Circuit component arrangement diagram;
f) Packing list.
7.3 Transportation
The instrument is suitable for transportation by car, ship, airplane, etc., and should be protected from rain and snow during transportation. 7.4 Storage
The instrument should be stored in a dry, wind-free environment at room temperature: For long-term storage, it should be unpacked and powered on for inspection regularly (no more than six months). 53 Judgment rules
Recommended sample size
6.3.1 The instrument can only be shipped after all the factory inspection items are qualified. Maximum sample size
6.3.2 If any item of the instrument fails in the type inspection, double sampling inspection shall be carried out; if there are still unqualified items, the batch of instruments shall be judged to be unqualified.
7 Marking, packaging, transportation and storage
7.1 Marking
7.1.1, when the instrument leaves the factory, it shall have the following product markings: a) instrument model and name;
b) manufacturer name and trademark;
c) date of manufacture and factory number:
d) product standard number:
7.1.2 Packaging marking: the outer packaging of the instrument shall have the shipping and receiving mark and the packaging storage and transportation pictorial mark, which shall meet the requirements of GB191. 7.2 Packaging
7.2.1 The instrument packaging must meet the requirements of GB/T13384. 7.2.2 The accompanying technical documents should include:
a) Certificate of conformity;
b) Operating instructions;
c) Mechanical assembly drawing:
d) Circuit schematic diagram;
e) Circuit component arrangement diagram;
f) Packing list.
7.3 Transportation
The instrument is suitable for transportation by car, ship, airplane, etc., and should be protected from rain and snow during transportation. 7.4 Storage
The instrument should be stored in a dry, wind-free environment at room temperature: For long-term storage, it should be unpacked and powered on for inspection regularly (no more than six months). 5
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