MT/T 782.1-1998 English PDFUS$479.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. MT/T 782.1-1998: Mechanical and electrical equipment temperature transducer for coal mine specification for analogue output Status: Obsolete
Basic dataStandard ID: MT/T 782.1-1998 (MT/T782.1-1998)Description (Translated English): Mechanical and electrical equipment temperature transducer for coal mine specification for analogue output Sector / Industry: Coal Industry Standard (Recommended) Classification of Chinese Standard: D98 Classification of International Standard: 73.100.93 Word Count Estimation: 12,179 Date of Issue: 11/10/1998 Date of Implementation: 4/1/1999 MT/T 7:---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.Mechanical and electrical equipment temperature transducer for coal mine specification for analogue output People's Republic of China Coal Industry Standard Temperature sensor of electromechanical equipment in coal mine Analog signal output type Mechanical and electrical equipment temperature transducer for coal mine specification for analogue output 1998-11-10 Approved.1999-04-01 Implementation Approved by State Coal Industry Bureau ContentsForeword Ⅱ 1 Scope 1 2 Normative references 1 3 Product Category 1 4 Technical requirements 1 5 Test method 4 6 Inspection rules 7 7 Marking, packaging, transportation and storage 8ForewordThis standard strictly abides by GB in terms of explosion protection and mine safety 3836.1-1983 "General requirements for explosion-proof electrical equipment for explosive environments Seeking, GB 3836.4-1983 "intrinsically safe circuits and electrical equipment" i "for explosion-proof electrical equipment for explosive environments" and GB/T 12173-1990 "Related regulations for general electrical equipment for mining". Technical content with MT 209-1990 "Coal Mine Communication and Inspection General technical requirements for electrical and electronic products for measurement and control ", MT 210-1990 "Basic test of electric and electronic products for communication, detection and control in coal mines Inspection Methods "and other coal industry standards. According to the performance characteristics and test methods of temperature sensors for electromechanical equipment used in coal mines, the standard is divided into two parts. Part 1. Analog signal output type; Part 2. Switching signal output type. This standard is proposed by the Industry Management Department of the State Coal Industry Bureau. This standard is under the jurisdiction of the Technical Committee for Standardization of Special Equipment for Coal Mines. This standard was drafted. Changzhou Institute of Automation, China Coal Research Institute. The main drafters of this standard. Peng Xia and Shen Shizhuang. This standard is entrusted to the Communication Monitoring Equipment Branch of the Coal Industry Coal Mine Special Equipment Standardization Technical Committee to explain. Temperature sensor of electromechanical equipment in coal mine Analog signal output type1 ScopeThis standard specifies the product classification, technical requirements, test methods, and inspections of temperature sensors for coal mine electromechanical equipment with analog signal output. Rules, signs, packaging, transportation and storage. This standard is applicable to temperature sensors (hereinafter referred to as the abbreviations) for continuous measurement of the temperature of underground electrical and mechanical equipment and output of analog signals. "Temperature Sensor").2 Reference standardsThe following standards contain provisions that, through reference in this standard, constitute provisions of this standard. When this standard was published, the editions shown were all Is effective. All standards will be revised, and all parties using this standard should explore the possibility of using the latest versions of the following standards. GB 156-1993 standard voltage GB 191-1990 packing storage and transportation pictogram GB/T 2829-1987 Sampling procedures and sampling tables for periodic inspection (suitable for inspection of production process stability) GB 3836.1-1983 General requirements for explosion-proof electrical equipment for explosive environments GB 3836.4-1983 Explosion-proof electrical equipment for explosive environments Intrinsically safe circuits and electrical equipment "i" GB/T 5080.1-1986 General requirements for equipment reliability testing GB/T 5080.7-1986 Equipment reliability test Validation test of failure rate and mean time between failures under the assumption of constant failure rate Test plan GB/T 12173-1990 general electrical equipment for mining GB/T 13384-1992 general technical requirements for packaging of mechanical and electrical products MT 209-1990 General technical requirements for electric and electronic products for communication, detection and control in coal mines MT 210-1990 Basic test methods for electric and electronic products for communication, detection and control in coal mines MT 286-1992 Model and management method of coal mine communication and automation products MT/T 408-1995 DC stabilized power supply for coal mine3 Product Categories3.1 Model Should conform to MT Relevant provisions of 286. 3.2 Type 3.2.1 According to explosion-proof type. mine intrinsically safe type; general mine type. 3.2.2 According to measurement methods. contact type; non-contact type. 3.2.3 According to the display function. there is display; no display. 3.3 Specifications 3.3.1 According to the accuracy level of measurement. 0.1, 0.2, 0.5, 1.0, 1.5, 2.0, 2.5, 5.0. 3.3.2 According to measurement range. 0 ~ 30, 0 ~ 50, 0 ~ 100, 0 ~ 150, 0 ~.200, 0 ~ 300, 0 ~ 400, 0 ~ 500 ℃.4 Technical requirements4.1 The product shall meet the requirements of this standard and be manufactured in accordance with the drawings and documents approved by the prescribed procedures. 4.2 Environmental conditions 4.2.1 The temperature sensor should work normally under the following conditions. a) Ambient temperature. -5 ~ 40 ℃, other temperature grades should meet MT Provision of 4.2 of 209-1990; b) Average relative humidity. not more than 95% (25 ℃); c) Atmospheric pressure. 80 ~ 106 kPa; d) Where there is no corrosive gas that destroys insulation in coal mines. 4.2.2 The worst storage and transportation conditions that the temperature sensor can withstand are. a) High temperature. 60 ℃; b) Low temperature. -40 ℃; c) Average relative humidity. 95% (25 ℃); d) Vibration. acceleration 50 m/s2; e) Shock. Peak acceleration 500 m/s2. 4.3 Basic performance 4.3.1 Measurement range The measurement range is generally. 0 ~ 30, 0 ~ 50, 0 ~ 100, 0 ~ 150, 0 ~.200, 0 ~ 300, 0 ~ 400, 0 ~ 500 ℃. 4.3.2 Basic error The basic error limit should meet the requirements in Table 1. Table 1 Accuracy 0.1 0.2 0.5 1.0 1.5 2.0 2.5 5.0 Basic error limit,% ± 0.1 ± 0.2 ± 0.5 ± 1.0 ± 1.5 ± 2.0 ± 2.5 ± 5.0 4.3.3 Stability 4.3.3.1 Zero drift 24 h should generally not be greater than 0.1 ℃. 4.3.3.2 Upper limit drift Within h should not be greater than the basic error limit. 4.3.4 Response time Should not be greater than 20 s, specified by the product standard. 4.3.5 Detection angle and detection distance Non-contact temperature sensors are specified by product standards. 4.3.6 Output signal Should conform to MT Provision of 5.3.3 in 209-1990. 4.3.7 Supply voltage AC power supply voltage level should conform to GB According to 156, the DC power supply voltage level should conform to MT/T Regulation 408, specific scope Clearly stipulated by product standards. 4.4 Select performance The temperature sensor can choose the following performance, but it should meet the requirements for use. a) Temperature display function and resolution; b) Control temperature setting and control signal output function; c) Alarm temperature setting and alarm function; d) Multi-point measurement function; e) other properties. 4.5 Power fluctuation adaptability When the supply voltage changes within the working voltage range specified in the product standard, the temperature sensor should be able to work normally and the technical performance conforms to the Provision of product standards. 4.6 Structure 4.6.1 Metal parts shall be treated with anti-rust and anti-corrosion. 4.6.2 Fasteners must have measures to prevent automatic release. 4.6.3 General requirements for electrical clearances and creepage distances, main parts and components, grounding and structures shall meet MT 209-1990 number 7 Chapter, Chapter 8, Chapter 9, 11.3 and GB/T 12173 relevant provisions. 4.6.4 Plastic components shall be made of non-combustible or non-combustible materials. 4.7 Appearance quality 4.7.1 The surface is flat, without damage and scars, and the metal parts have no rust. 4.7.2 Signs and nameplates shall be complete, clear and firm. 4.7.3 Moving parts shall be flexible and reliable. 4.7.4 There shall be no loosening of fasteners. 4.7.5 For the temperature sensor with display, the display number is clear, and there should be no display, overlapping characters, missing strokes, etc., the position of the decimal point should be correct. 4.8 Shell protection The protection capability of the enclosure should not be lower than IP54. For general temperature sensors used in mines without dripping water and dust intrusion, allow May reduce requirements, but must not be lower than IP21. 4.9 Electrical safety 4.9.1 Insulation resistance Insulation resistance between live circuit and ground (or enclosure) should meet MT The provisions of 11.1 in 209-1990, the specific measurement location is Respective product standards. 4.9.2 Power frequency withstand voltage 1 between live circuit and ground (or enclosure) Min power frequency withstand voltage should meet MT 11.2 of 209-1990 and no fire Flowers, flashovers and breakdown phenomena, the specific test parts are specified by the respective product standards. 4.10 Surface temperature Temperature sensor in normal working and fault state, the maximum surface temperature of its components, wires and casing must not exceed 150 ℃. 4.11 Reliability The MT BF of the temperature sensor should not be less than 4000 h. 4.12 Environmental adaptability 4.12.1 The temperature sensor should be able to pass the high-temperature working test when it is powered on, and its technical performance and appearance quality should meet the respective product standards. Provisions. 4.12.2 The temperature sensor should be able to pass the low temperature working test when it is powered on, and its technical performance and appearance quality should meet the respective product standards. Provisions. 4.12.3 The temperature sensor should be able to pass the high-temperature storage test in the non-working state, and its technical performance and appearance quality should be in accordance with the respective Provision of product standards. 4.12.4 The temperature sensor should be able to pass the low temperature storage test in the non-working state, and its technical performance and appearance quality should be consistent with the respective Provision of product standards. 4.12.5 The temperature sensor shall be able to pass the alternating humidity and heat test, and its technical performance, electrical safety performance and appearance quality shall comply with the respective product standards. Regulations. 4.12.6 The temperature sensor shall be able to pass the vibration test, and its technical performance and appearance quality shall meet the requirements of the respective product standards. 4.12.7 The temperature sensor shall be able to pass the impact test, and its technical performance and appearance quality shall meet the requirements of the respective product standards. 4.12.8 The temperature sensor shall be able to pass the drop test in a non-working state, and its technical performance and appearance quality shall meet the requirements of the respective product standards. Regulations. 4.12.9 The packaged temperature sensor shall be able to withstand simulated automobile transportation tests. After the test, the packaging box should be free of damage and obvious deformation. The technical performance and appearance quality of the temperature sensor shall meet the requirements of the respective product standards. 4.13 Mine and explosion-proof performance 4.13.1 Mine-used intrinsically safe temperature sensors must comply with GB 3836.1 and GB 3836.4 required to pass the required tests The designated explosion-proof inspection unit passed the inspection and passed the inspection and obtained the "Explosion-proof Inspection Certificate". 4.13.2 General temperature sensors for mining must comply with GB/T According to the requirements of 12173, it has passed the prescribed tests and passed the national explosion-proof inspection. The inspection unit passed the inspection and obtained the "Mining Qualification Certificate."5 Test method5.1 Test conditions 5.1.1 Environmental conditions 5.1.1.1 Reference atmospheric conditions. a) Temperature. (20 ± 2) ℃; b) Relative humidity. 60% ~ 70%; c) Atmospheric pressure. 86 ~ 106 kPa. 5.1.1.2 For tests that do not need to be performed under reference atmospheric conditions, the following general test atmospheric conditions are recommended. a) Temperature. 15 ~ 35 ℃; b) Relative humidity. 45% ~ 75%; c) Atmospheric pressure. 86 ~ 106 kPa. 5.1.2 Power conditions Unless otherwise specified in the relevant standards, the power supply must meet the following requirements. a) The tolerance of the supply voltage must not exceed ± 1% of its nominal value; b) The period and random deviation of the supply voltage must not exceed 0.2% of its nominal value. 5.2 Measuring instruments and equipment 5.2.1 General requirements for measuring instruments and equipment a) The accuracy and measurement range of measuring instruments and equipment should ensure the requirements of the measured indicators; b) The selection of measuring instruments and equipment should meet the characteristics of the measured performance. 5.2.2 Standard temperature generating device a) It can generate equipment temperature that meets the requirements of product standards, the temperature field is stable, and the uniform temperature area should meet the test requirements; b) Equipped with a standard thermometer, the basic error should not be greater than 1/3 of the basic error of the measured temperature sensor. 5.2.3 Output signal measuring device 5.2.3.1 Frequency analog signal measuring device. a) The range and input signal should meet the test requirements; b) Instruments shall be provided for measuring the amplitude and waveform of the output signal. 5.2.3.2 DC analog signal measuring device. a) The accuracy and range of the ammeter should meet the test requirements, among which the accuracy should not be less than 1.0; b) Equipped with variable analog load and other instruments should meet the product standard requirements. 5.2.3.3 Electronic stopwatch. a) Average error. not more than 0.5 s/d; b) Resolution. 0.01 s. 5.2.3.4 Regulated power supply. a) Output voltage. The adjustable range should be greater than the supply voltage range of the temperature sensor; b) Output current. should meet the measurement requirements; e) Accuracy. not lower than 2.5. 5.3 Basic performance test method 5.3.1 General test requirements 5.3.1.1 The test shall be carried out under reference working conditions. In addition to arbitration, the basic error of the temperature sensor can be judged correctly. Under the premise, the test is allowed to be carried out under normal test atmospheric conditions. 5.3.1.2 The measured temperature sensor shall be installed in accordance with the specified working conditions. For non-contact temperature sensors, the test should be performed at the maximum detection distance get on. 5.3.1.3 The actual test point is allowed to deviate from the specified test point appropriately, but not more than ± 5 ℃. 5.3.2 Basic error test 5.3.2.1 The test shall not be less than 5 test points.The test points shall include the upper and lower limits of the measurement range and be evenly distributed throughout the measurement range. Within. 5.3.2.2 Adjust the standard temperature generating device to the lower limit of the measured temperature sensor, then increase the temperature steadily to the upper limit, and then decrease it steadily. From low temperature to the lower limit value, measure the signal output value of the temperature sensor at each test point in the upper and lower strokes in a cycle, and observe There should be no sudden changes in temperature. 5.3.2.3 The basic error is calculated according to formula (1). δi = Ii-In IN × 100% or fi -fn fN × 100% (1) Where. Ii, fi --- the actual output signal value at the test point; In, fn --- standard temperature output signal value at the test point; IN, fN --- the output signal value of the corresponding range of the measured temperature sensor. 5.3.2.4 The maximum value of the basic error is the basic error limit of the temperature sensor. 5.3.3 Stability test 5.3.3.1 Place the standard temperature generating device at the lower limit of the measured temperature sensor and read the output signal value I0 of the temperature sensor after stabilization Or f0, every 4th thereafter h measurement once, write down each measurement value Ii or fi, last 24 h. Convert I0, f0, Ii, fi into corresponding temperature values t0 and ti, take the maximum of the absolute value of the difference between the two as the maximum drift of the lower limit. 5.3.3.2 Place the standard temperature generating device at the upper limit of the measured temperature sensor. h measurement once, write down each measurement Ii or fi, lasted 24 h, then, calculated according to formula (1), the maximum value is the maximum drift of the upper limit value. 5.3.4 Response time test Place the measured temperature sensor on a standard temperature generating device that has been adjusted to the upper limit of the measurement range, and test the temperature sensor output signal. The time taken for the number to rise from room temperature to the corresponding value is the response time. 5.3.5 Detection angle and detection distance test Place the measured temperature sensor in front of the standard temperature generating device with a distance equal to the specified detection distance and an angle of the specified detection temperature. Angle measurement. The temperature sensor should have a signal output corresponding to the temperature, and its error should be within the specified range. The test was repeated at least 4 times. During the test, the detection angles should be in different directions evenly distributed. 5.3.6 Output signal test 5.3.6.1 may be carried out simultaneously with 5.3.2 tests. 5.3.6.2 Frequency output. Observe the output signal waveform and test its parameters. 5.3.6.3 DC current output. measure the output DC current and observe the constant output DC current when the load resistance changes within the specified range Happening. 5.4 Select performance test Defined by respective product standards. 5.5 Power fluctuation adaptability test Press MT 210-1990 Chapter 10. 5.6 Structural inspection Press MT 210-1990 Chapter 5 relevant provisions. 5.7 Visual inspection Press MT 210-1990 Chapter 5 relevant provisions. 5.8 Shell protection performance test Press MT 210-1990 Chapter 16. 5.9 Insulation resistance measurement Press MT 210-1990 Chapter 7. 5.10 Power frequency withstand voltage test Press MT 210-1990 Chapter 8. 5.11 Surface temperature measurement Press MT 210-1990 Chapter 11. 5.12 High temperature work test Press MT The relevant provisions of Chapter 23 of 210-1990 are carried out. The device under test is powered on, and the severity level is. the temperature is the highest environment Temperature, duration 2 h. 5.13 Low temperature working test Press MT The relevant provisions of Chapter 23 of 210-1990 are carried out. The equipment under tes......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of MT/T 782.1-1998_English be delivered?Answer: Upon your order, we will start to translate MT/T 782.1-1998_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of MT/T 782.1-1998_English with my colleagues?Answer: Yes. The purchased PDF of MT/T 782.1-1998_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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