Verification Regulation of Quantitative Filling Machine for Liquid Material
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National Metrology Verification Regulations of the People's Republic of China JJG 687--2008
Quantitative Filling Machine for Liguid Material
Quantitative Filling Machine for Liguid Material2008 - 09 -- 27. Issued
Implemented on 2009-03-27
The General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China issued JJG 687—2008
Verification Regulation of Quantitative FillingMachine for Liguid Material
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qEef-ac-ec-ae-Craac-cBo-NecarrkANrKAcaJJG 687—2008
Replaces JJG687—1990
This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on September 27, 2008, and will be implemented on March 27, 2009.
Responsible unit: National Technical Committee for Flow and Capacity Measurement Main drafting unit: China Institute of Metrology Participating drafting unit: Jiangsu Institute of Metrology Shenyang Institute of Energy Measurement Technology
This regulation is entrusted to the National Technical Committee for Flow and Capacity Measurement to be responsible for the interpretation of this regulation Main drafter:
JJG 687—2008
Zhang Long (China Institute of Metrology)
Participating drafters:
Tong Lin (China Institute of Metrology)
Huang Zhaohui (Jiangsu Institute of Metrology) Sun Dayong (Shenyang Institute of Energy Metrology Technology)YKANYKAca
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Scope·
Terms and measurement units,
Metrological performance requirements|| tt||4.1 Constant volume filling machine-
4.2 Fixed weight filling machine
5 General technical requirements
5.1 Appearance requirements
5.2 Filling capacity·
5.3 Filling volume qualified rate
5.4 Labeling
6 Measuring instrument control
6.1 Verification conditions
6.2 Verification item date...
6.3 Verification method
6.4 Verification result processing·
6.5 Verification cycle
JJG 687—2008
Appendix A Verification of filling machines by volume comparison method (Method 2)Appendix B Verification record of fixed volume filling machines (for reference)Appendix C
Appendix D
Verification record of fixed weight filling machines (for reference)Inner page format of verification certificate (for reference)
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1 Scope
JJG687-2008
Verification procedure for quantitative filling machines for liquid materials
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This procedure applies to the initial verification, subsequent verification and inspection during use of quantitative filling machines for liquid materials (hereinafter referred to as filling machines).
2 Terms and measurement units
SOHONH
2.1 Volumetric filling machine (capacity quota filling machine ldOO
Filling machine that performs quantitative filling based on volume 2.2 Weight quota filling machine Cmass quota filling machine)Filling machine that performs quantitative filling based on mass 2.3 Vertical filling machine endlong filling machine Filling machine that performs filling work with the filling heads arranged in a straight line 2.4 Rotary plug-in filling machine (change filling machine) Filling machine that performs filling work with the filling head rotating with the machine. 2.5 Piston inject filling machine (piston inject filling machine) Filling machine that determines the filling volume by completing a stroke of the active base in the column. 2.6 Self-extraction positive bed (or negative pressure) (pressure abjustment) NHO
Jinliangsi
Tehualei
Surface light
The process of determining the filling volume by changing the pressure inside the cylindrical piston connected to the filling head through the operation of the motor. 1OH
2.7 Filling capacity (illing capability) The filling quantity that the filling machine can achieve in a single grain time 2.8 Rated filling capacity (production capacity) (throughpting capability)
The number of products that the filling machine should complete filling in a single rigid time 2.9 Filling volume qualified rate
gualated probability
Under the rated filling capacity, the qualified percentage of the product filling volume G
Yada Ying volume
2.10 Conputation unit or milliliter (mlo gram (kg) or gram (g). The unit of measurement of the filling machine is||tt ||3Overview
METROLO
Liquid material quantitative filling machine is widely used in the quantitative filling process of chemical, pharmaceutical, food and other industries. Its working principle determines the filling volume according to the method of self-pumping positive pressure (or negative pressure) fixed volume or weighing. It can be divided into two types: fixed volume type and fixed weight type, and its structure is divided into upright type, rotary type, etc. 4Metering performance requirements
4.1 Fixed volume filling machine
The maximum allowable error of the fixed volume filling machine is ±1%, ±2%, ±3%, ±5%. 1
4.2 Fixed weight filling machine
JJG687—2008
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qEef-ac-ec-ae-Cor aac-cBo-NecarrkANrKAcaThe maximum allowable error of the fixed-weight filling machine is ±0.2%, ±0.5%, ±1%, ±2%, ±3%, ±5%.
5 General technical requirements
5.1 Appearance requirements
The filling machine should not have appearance defects such as paint flow, burns, cracks and sand holes that affect the metering performance. 5.2 Filling capacity
The filling capacity of the filling machine should comply with the rated filling capacity of the filling machine. 5.3 Filling volume qualification rate
The filling volume qualification rate of the filling machine under the rated filling capacity should be 100%. 5.4 Identification
The filling machine should have a nameplate. The nameplate should be marked with the product name, model, filling, number, measurement unit, filling accuracy, etc. Degree, rated filling capacity, manufacturing time and manufacturer. The type of material to be filled can also be specified as needed. Spring Measuring Instrument Control
The control of measuring instruments for filling machines includes the first calibration, subsequent calibration and in-use inspection. 6.1 Calibration Conditions
6.1.1 The calibration of the filling machine should be carried out under the condition that the filling machine is turned on. 6.1.2 The calibration environment temperature is (5-~40)%, and the temperature difference of the calibration medium during one calibration process should be 5°C. 6.1.3 The filling machine must be calibrated with the actual filling material as the medium. 6.1.4 Calibration Equipment
The calibration equipment must be qualified after calibration and within the calibration cycle. The accuracy of the selected standard instrument should meet 1/3 of the maximum allowable error of the inspected filling machine. The calibration equipment of the filling machine is shown in Table 1. Table 1 Calibration equipment
Calibration equipment
Main equipment
Auxiliary equipment
Instrument name
Weighing device
Standard measuring instrument group
Density measuring device
Thermometer
Computer and accessories
Measuring range
(0.1-~60) kg
5 mL-~50 i
(0. 600--2. 000) g/cm
(0~-30)℃:
Technical requirements
±0. 000 5 g/cm
Graduation value 0.5°℃
Resolution 0.15
6.2 Verification items H
Verification items are shown in Table 2.
Verification items
Filling capacity
Filling volume
Filling qualified rate
First verification
JJG 687—2008
Note: "Ten" indicates items that should be inspected, and "two" indicates items that may not be inspected. 6.3 Verification method
6.3.1 Appearance inspection
Subsequent verification
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qEef-ac-ec-ae-Craac-CEo-NecarrKANrKAcaIn-use inspection
The appearance of the filling machine is inspected monthly, and the results should comply with the relevant provisions of Article 5.1. 6.3.2 Filling capacity inspection
a) After the filling machine is turned on, check whether the conveying action of the filling machine is coordinated. b) When the filling machine runs continuously for more than 3 minutes, its actual filling capacity shall meet the requirements of the rated filling capacity. 6.3.3 Verification of filling machine capacity
6.3.3.1 Verification of fixed volume filling machine
a) Capacity comparison method
1) Select the corresponding standard measuring vessel according to the filling volume of the filling machine, fill it with clean water and pour it out, and turn the measuring vessel upside down 308.
2) Take the container twice the size of the filling head from the filling line, clean it, dry it and number it one by one. 3) Rinse the clean water to the nominal scale of the standard measuring vessel, so that the lower edge of the liquid surface is tangent to the upper edge of the scale; and record the liquid temperature t at this time.
4) Pour the clean water in the standard measuring vessel with the liquid level adjusted into the container, wait for 30s, and mark the lowest point of the liquid surface in the container; at the same time, measure the temperature of the liquid in the standard measuring vessel. 5) According to the allowable error of the filling volume of the filling machine, use a graduated pipette to add (or remove) clean water in the container, calibrate the maximum allowable error and the minimum allowable error, and make a mark line (allowable error line). 6) Put the calibrated containers back to the filling line in order according to the number for filling. 7) After filling, observe whether the liquid in the container is within the tolerance line, and record the temperature of the liquid at this time (x, tx and the temperature difference should not exceed 5°C. 8) If the liquid level of the container is not within the allowable error line at this time, the filling volume of the corresponding filling head is judged to be unqualified according to the number of the container. The adjustment device of the filling head should be adjusted and the calibration should be performed again. At the same time, record the total number of qualified pieces of the filling machine N.
Note: This method is a punching calibration method. If the filling head of the filling machine is greater than 10, it can also be carried out by using the "calibration of the machine by volume comparison method (method 2)" in the record A, and the calibration result is equivalent. 3
b) Weighing method
JJG687-2008
1) Select the corresponding weighing device according to the filling volume of the filling machineFKAONKCa
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2) On the production line of the filling machine, attach the three-times numbered labels equivalent to the filling head to the containers in turn. Record the temperature t of the liquid at this time.
3) Remove the containers with numbered labels before packing, weigh them one by one, and record the weighing data m. 4) Measure the temperature of the liquid at this time and compare it with t. The temperature difference shall not exceed 5℃. 5) Pour out the liquid in the containers with numbered labels in turn, and weigh them after drying for 15s, and record the weighing data m流.
6) Liquid density measurement
SELONS
Pour the liquid in the container into the density measuring device, measure the density three times and record it.
Take the average value p as the liquid density
6.3.3.2 Calibration of fixed-weight filling machine
(1) Select the corresponding digital indicating scale according to the filling volume of the filling machine (2) On the production line of the filling machine, place the three-fold numbered labels of the corresponding filling machine on the container in turn. Record the weighing data ms.
(3) Before packing, weigh the containers with numbered labels in turn and record the weighing data m. (4) Pour out the material in the container and weigh the empty containers according to the items. 6.3.4 Data processing
6.3.4.1 Calculation of fixed-volume installed capacity
a) Calculation of the capacity of the container
D=VI+twww.bzxz.net
Where: (V20)R
20)+3(20
The capacity of the container at 20℃, mL
The nominal capacity of the standard measuring instrument is one mL;
The temperature inside the standard measuring instrument,
The expansion coefficient of the standard measuring instrument is 9.9×10
the expansion coefficient of the container,
the temperature in the container,
the expansion coefficient of water, 1.2×10-8/℃
R)+Bw（tR
BLISHIN
If the temperature difference between the standard measuring instrument and the temperature in the container does not exceed sc, the capacity of the container can be determined without calculation: according to the liquid Surface position directly changed from the enterprise to sell flowers and flowers C2b) Use weighing method to verify the capacity calculation of the filling machine 1) Determination of filling volume
V=[1+β(20-)]
p=erpatps
Where:
The actual volume of the liquid in the th container, mL: The mass of the liquid in the th container, g; m:
The average density of the liquid, g/cm;
（3）
0,pg,3
JJG687-2008
Measure the density of the liquid three times, g/cm
The volume expansion coefficient of the filling machine, (/℃);
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The temperature of the liquid during calibration, ℃. 2) Calculation of relative error of filling volume
VV×100%
Where: E Relative error of filling volume;
V The actual volume of liquid in the ith container, mL; 6.3.4.2 Determination of filling volume of fixed weight filling machine a) Determination of mass
Where: m;
The actual mass of liquid in the ith container
The mass of the ith container with liquid, mi
The mass of the ith container without liquid, mi
b) Relative error of filling mass
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E=m=m×100%
Where: E
Where: n
Relative error of filling quality
The actual mass of liquid in the th container is the nominal value of vertical filling quality,
Filling quantity qualified rate
×100%
Filling quantity qualified rate;
Total number of qualified filling quantities during calibration;
N, the total number of pieces during calibration.
Processing of Verification Result
ISHING
If the filling machine passes the verification, a verification certificate will be issued; if it fails the verification, a verification result notice will be issued, and the unqualified items will be noted. The negative format of the verification certificate is shown in Appendix D. 6.5 Verification Cycle
The verification cycle of the filling machine is 1 year.
Appendix A
JJG 687—2008
Verification of the filling machine by the volume comparison method (Method 2) The operation steps of the filling machine verification by the volume comparison method are as follows:YKoNYKAca
qEef-ac-ec-ae-Craac-cEo-NecarrkANrKAca (1) Select one or two corresponding standard glass measuring vessels according to the filling volume of the filling machine, fill the filling liquid above its scale line, and then empty it completely after 305, waiting for use. (2) On the production line of the filling machine, affix the triple number label equivalent to the filling head to the container in turn. (3) After filling, remove the container in turn, pour it into the standard glass measuring vessel respectively, observe the position of the liquid level, and record whether it is at the upper and lower filling difference scale lines of the standard glass measuring vessel. (4) If the liquid in the container is poured into the standard push glass measuring vessel and the liquid level is not between the upper and lower tolerance lines, the adjustment device of the filling machine should be adjusted and recalibrated. Appendix B
Inspection unit
Instrument number:
Calibration basis
Inspection environment conditions: Room temperature:
1. Appearance inspection
2. Filling capacity
3. Filling volume record:
Filling head
Filling volume
1.Inspection result:
JJG 687—2008
TYKAONYKAa
qEef-ac-ec-ae-Craac-CEo-NecarrKANrKAcaVerification record of constant volume filling machine (for reference)Specification model
:Instrument manufacturing unit
Standard device used:
;Medium temperature
Filling volume
(1)Filling qualification rate:
(2)Maximum allowable error of filling machine:
Issued verification certificate number:
Verifier
Filling volume
:Verification date
;Valid until
Filling volume
Filling volume||t t||Appendix C
Inspection unit
Instrument number:
Verification basis
Verification environment conditions: Room temperature:
1. Appearance inspection
3. Quality record
JJG687-2008
Verification record of fixed-weight filling machine (for reference) Specification model
: Instrument manufacturing unit
Standard device used:
℃, medium temperature
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