GB 30439.2-2013Safety requirements for industrial automation products - Part 2: Safety requirements for pressure (differential) transmitter (English PDF)

3.1 Equipment and devices

3.1.1 PERMANENTLY CONNECTED EQUIPMENT permanentlyconnectedequipment Only method of permanent connection with the tool to disconnect the power supply and electrical connection devices. [GB 4793.1-2007, the definition 3.1.2]

3.1.2 Tools tool , Including keys and coins, including an external device to help people to perform some kind of mechanical function and use. [GB 4793.1-2007, the definition 3.1.5]

3.2 Parts and Accessories

3.2.1 Terminal terminal A component of the apparatus (device) connected to the outer conductor provided. [IEV151-01-03, revised edition]

Note. The terminal can contain one or more contacts, so that the term also includes sockets, connectors and the like. [GB 4793.1-2007, the definition 3.2.1]

3.2.2 Functional ground terminal functionalearthterminal To a point directly measuring or control circuit, or directly with a shield portion is electrically connected, but also reservations To be used for any function other than safety purposes purpose a ground terminal.

Note. The measuring equipment, the terminal is often referred to as measuring ground terminal. [GB 4793.1-2007, the definition 3.2.2]

3.2.3 Protective Conductor Terminal protectiveconductorterminal For security purposes and conductive parts of equipment are connected, but also with a predetermined external terminal connected to protective earthing system. [GB 4793.1-2007, the definition 3.2.3]

3.2.4 Housing enclosure Protect the unit against certain external influences and prevent parts from any direct contact with the direction provided. [GB 4793.1-2007, the definition 3.2.4]

3.3 Electrical values

3.3.1 Rated (value) rated (value) Usually by the manufacturer for the components, apparatus, or device reaches a given magnitude of working status. [IEV151-04-03] [GB 4793.1-2007, the definition 3.3.1]

3.3.2 Rating rating A set of ratings and working conditions. [IEV151-04-04] [GB 4793.1-2007, the definition 3.3.2]

3.4 Test Type test typetest For a particular design, in order to prove that the design and structure is able to meet one or more requirements of this part and of one or more devices Taiwan sample (or device components) tests carried out. [IEV151-04-15, revised edition]

Note. This is IEV151-04-15 definition expanded to include both the design requirements and structural requirements. [GB 4793.1-2007, the definition 3.4.1]

3.5 Security Terminology 3.5.1 (Parts) palpable accessible (ofapart) As prescribed in Appendix A of the standard test finger or test can pin accessible. [GB 4793.1-2007, the definition 3.5.1]

3.5.2 Dangerous hazard Potential source of harm. [GB 4793.1-2007, the definition 3.5.2]

3.5.3 Normal use normaluse Operation according to instructions or intended use by the apparent instructions, including standby. NOTE. In most cases, the normal use also refers to normal conditions, because the use of manual warns users not to use the device under abnormal conditions. [GB 4793.1-2007, the definition 3.5.9]

3.5.4 Normal conditions normalcondition All protective measures to prevent dangerous conditions are intact. [GB 4793.1-2007, the definition 3.5.10]

3.5.5 Single fault condition singlefaultcondition Protective measures to prevent the risk of a failure condition occurs or is likely to cause some dangerous and a fault condition.

Note. If a single fault condition will inevitably lead to another single fault conditions, such a two failures are considered a single fault condition. [GB 4793.1-2007, the definition 3.5.11]

3.5.6 Operator operator According to the intended use of the device to operate the equipment man.

Note. the operator for this purpose should be properly trained. [GB 4793.1-2007, the definition 3.5.12]

3.5.7 Responsible responsiblebody Responsible for the maintenance and use of equipment or operating personnel to ensure adequate training for individuals or organizations. [GB 4793.1-2007, the definition 3.5.13]

4.3.2.8 Output For providing an electrical output of the transmitter. Working condition

a) of the transmitter should be able to provide the rated output power of the rated load;

b) to any output, rated load impedance should be connected or not.

4.4 Test under single fault conditions

4.4.1 Overview It should be according to the following requirements. Fault

a) Check the circuit diagram of the transmitter and can usually determine whether there may be dangerous and therefore whether it should be applied condition;

b) In addition to proof of a specific fault conditions likely to cause danger, the test shall be the fault;

c) The transmitter shall operate at reference test conditions (see 4.3) the most unfavorable combination of conditions, for different faults, which combined strip Member can vary, these combined conditions should be recorded during each test.

4.4.2 Fault conditions imposed Fault conditions 4.4.2.1 ~

4.4.2.3 should include provisions for fault conditions. These fault conditions can only be applied to one and should press Sequentially applied in any convenient order, can not be applied more than one fault at the same time, the results unless it is applied to a fault caused by a fault. After each applied once the fault condition, the transmitter or parts shall pass the applicable test 4.4.4.

4.4.2.1 insulation between circuits and parts Between circuits and components, insulation values of less than for the basic insulation provided should be short-circuited in order to test whether it can prevent fire Flame spread.

4.4.2.2 more than one type of power supply transmitters Are designed to be more than one type of power supply transmitter should be connected to the power supply at the same time, unless the structure can prevent the Kind of connection.

4.4.2.3 anti-reverse short circuit failure In the anti-reverse short circuit, the power supply polarity test performed.

4.4.3 Test duration The results should be made by the failed transmitter it has been applied to produce work never again have further changes so far. Each test a Generally limited to less than 1h, because two faults caused by a single fault condition usually show up during that time. If there are indications Ming may eventually produce a flame spread of dangerous or personal injury, the test should be continued until the emergence of these dangerous, or until the maximum time To 4h, unless in danger before this. Compliance

4.4.4 after applying the fault condition

4.4.4.1 Temperature By measuring the outer surface of the housing or can be readily accessible to the temperature of the outer surface of parts to test temperature protection compliance. Temperature components at an ambient temperature of 40 °C, or if the ambient temperature is higher, then the maximum rated ambient temperature shall not exceed 105 °C. The surface temperature is determined by measuring the temperature rise or parts plus 40 °C, or if it is above 40 °C, coupled with the maximum rated ambient temperature to make sure.

4.4.4.2 flame spread By the transmitter on a soft surface white wood wrapped in tissue paper, wrapped in gauze on the transmitter to test the spread of fire protection is No compliance. Molten metal, burning insulation, flaming particles, etc. can not be dropped onto the surface of the transmitter is placed on, and tissue paper or Gauze shall charring, burning or fire. If this is not a danger, then melt the insulation material should be ignored.

4.4.4.3 Other hazards According to Chapter 7 and Chapter 8 and Chapter 11 ~ Chapter 15 to examine other risk protection requirements for eligibility.

5.1 Mark

5.1.1 Overview It should be marked in line with the provisions of

5.2 logo on the transmitter. In addition to signs of internal parts, these flags should be from outside You will be able to see, or if the lid is predetermined by the operator to be removed or opened, then the lid removed without tools, these signs should As you can see from the outside. Flag applies to the entire transmitter operator shall not be marked on the parts can be removed without tools. Letter symbols and units of measure shall comply with IEC 60027, if applicable, graphic symbols shall comply with the provisions in Table 1. symbol No. No color requirements. Graphic symbols should be interpreted in the file.

Note 1. The symbol should be used if applicable IEC and ISO regulations.

Note 2. The flag shall mark the bottom of the transmitter. By visual inspection to verify compliance.

5.1.2 Logo The transmitter should be marked with at least the following.

a) the name or trademark of the manufacturer or supplier.

b) type, name, or other methods to identify the transmitter. If provided with the same identification (model) is a transmitter Production sites on manufacturing, the manufacturing production sites for each transmitter, the flag should be able to identify the transmitter birth Production site.

Note. The location of the factory sign the code can be used, but do not mark the outside of the transmitter.

c) working pressure range of the transmitter or the maximum working pressure rating. By visual inspection to verify compliance.

5.1.3 Power The transmitter should be marked with the following information.

a) nature of supply. DC. Table 1 of the symbol.

b) rated supply voltage or the rated voltage range.

Note. You can also mark the rated voltage fluctuation value.

c) the maximum rated power of all connected accessories or plug-in module, unit W, or the maximum rated input current. If the transmitter You can use more than one voltage range, the voltage range corresponding to each should be separately marked, unless the maximum and minimum difference Not more than 20% of the average.

5.4 File

5.4.1 Overview For security purposes, along with the transmitter should provide file containing the following content. The intended use of

b) technical specifications;

c) instructions for use;

d) the name and address may be from the manufacturer or supplier to obtain technical assistance;

e) the information specified in 5.4.2 ~ 5.4.5. If applicable, the warning notice and warning symbols marked on the transmitter it should be made clear explanation is given in the specification, or Permanently and clearly marked on the transmitter. In particular, it should be given a period of narrative description under Table 1 marked with symbols for all of the cases required

3 To see the file, in order to clarify the nature of the potential dangers as well as any response must be taken. NOTE. If during normal use involves handling hazardous materials, they have given proper use and safety measures instructions. If the transmitter is specified by the manufacturer or provide Any hazardous material, but also gives the composition and procedures of the correct handling of hazardous materials. By visual inspection to verify compliance.

5.4.2 Transmitter Ratings File should contain the following information.

a) the power supply voltage or voltage range, and power or current rating;

b) a description of all input and output connections;

c) The transmitter is designed for the explanation given range of environmental conditions (see 1.4);

d) If the calibration of the transmitter to meet the GB 4208, the transmitters protection class description. By visual inspection to verify compliance.

5.4.3 Transmitter Installation Document should ...