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GB/T 22184-2008: Cereals and pulses -- Guidance on measurement of the temperature of grain stored in bulk
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Cereals and pulses -- Guidance on measurement of the temperature of grain stored in bulk
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GB/T 22184-2008
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Basic data | Standard ID | GB/T 22184-2008 (GB/T22184-2008) | | Description (Translated English) | Cereals and pulses -- Guidance on measurement of the temperature of grain stored in bulk | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B20 | | Classification of International Standard | 67.060 | | Word Count Estimation | 7,741 | | Date of Issue | 2008-07-16 | | Date of Implementation | 2008-11-01 | | Adopted Standard | ISO 4112-1990, IDT | | Regulation (derived from) | National Standard Approval Announcement 2008 No.12 (Total No.125) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the vertical silos and other grain stored in bulk barn in temperature measurement guidelines. | GB/T 22184-2008: Cereals and pulses -- Guidance on measurement of the temperature of grain stored in bulk
---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.
Cereals and pulses. Guidance on measurement of the temperature of grain stored in bulk
ICS 67.060
B20
National Standards of People's Republic of China
GB/T 22184-2008/ISO 4112.1990
Cereals and legumes
Food stored in bulk temperature measurement guide
(ISO 4112.1990, IDT)
Posted 2008-07-16
2008-11-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard is identical with ISO 4112.1990 "--- cereals and pulses stored in bulk food temperature measuring Guide" (in English).
This standard made the following editorial changes.
--- The "this International Standard" by "this standard";
--- The decimal point in English, "" changed. "."
Appendix A of this standard is an informative annex.
The standard proposed by the National Food Authority.
This standard by the National Standardization Technical Committee OILS.
This standard was drafted. Henan University of Technology, the National Bureau of Standards Food Quality Center.
Drafters of this standard. Wu Chun-rong, Xie Huamin, Tang Jian Huai.
GB/T 22184-2008/ISO 4112.1990
Introduction
Food stored in large quantities because of their physiological activities will generate heat. Hot food will make the temperature rise, leading to commercial-quality food,
Quality and food quality process irreversible deterioration. Therefore, we must constantly monitor changes in food storage temperatures and overheating of food
Ventilation and refrigeration and other food to take immediate measures to cool.
In the grain stored in bulk, the heat hazards in the initial stages is usually localized and affect only a small part of the stored grain. If not in time, will their
Some of his spread. Although only partial heating of food, its consequences are serious. It will lead to lower prices of processed food in bulk or simply can not sell
Out. In order to maintain food quality and extend the shelf life of food, frequently check the temperature of food it is very necessary. For this purpose, the base
In a large number of measurement points of temperature monitoring is an appropriate technology.
For proper ventilation cooling, the thermometer is also required. In cold weather, the grain temperature can be gradually reduced to 5 ℃ ~
7 ℃. At 0 ℃, even if the water reaches the highest internationally recognized limit physical activity to food is also very weak.
GB/T 22184-2008/ISO 4112.1990
Cereals and legumes
Food stored in bulk temperature measurement guide
1 Scope
This standard specifies the Silos and other grain stored in silos scattered temperature measurement guidelines.
2 Terms and definitions
The following terms and definitions apply to this standard.
2.1
Grain cereals and legumes.
2.2
A lot of food stored in the warehouse in a non-packaged form.
Principle 3
Place a series of temperature probes in grain stored in bulk in order to monitor or monitor temperature changes.
4 Instrument
According to the size and shape of the granary, select the appropriate thermometer (system) and install the form. Common are.
--- Portable instrument small barn used;
--- Semi-fixed or telescopic instrument used WAREHOUSE;
--- Silos using stationary equipment.
Thermometer (system) consists of the following components.
4.1 Temperature Probe
Usually it consists of one or more of the tube or cable (4.1.1) and one or more temperature sensing devices (4.1.2) and their external wire group
Into these wires should be set into the tube or cable. When the detector buried in a pile of grain, it reaches a stable temperature readings should not exceed
3min.
Making the detector material should be fumigated anti-corrosion and to prevent rodent damage.
Machine with a grain warehouse WAREHOUSE should configure flexible temperature probe.
Note 1. Silos in the suspension cables should be fixed in the warehouse at the end, in order to prevent displacement during loading.
4.1.1 tube or cable wrapping materials. glass fiber, metal or other suitable material are suitable pipe length and diameter. use
In silo tubes should have a certain strength and rigidity to resist Jincang food, a lot of tension and pressure generated when the warehouse.
Note 2. the role of the pipe or cable force with its diameter, depth and the laying of handling mobile food varies, the maximum pull up more than 50kN. Small
The diameter of the tube can be reduced and simplified fixing point tension fastening system, the tube has a greater diameter greater rigidity, suitable for high granary.
4.1.2 temperature sensing device (thermal sensor). includes a thermistor or thermocouple or impedance thermometer, or any other, can detect
Electronic temperature sensing device temperature 0.5 ℃ change, and its scope of work to the local environment should be 70 ℃ minimum temperature.
4.2 temperature indicator
May be accompanied by a recorder (see Appendix A).
GB/T 22184-2008/ISO 4112.1990
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