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Mechanical Industry Standard of the People's Republic of China
JB/T6436-92
Metering Pump Regulating Gauge
Published on July 20, 1992
Implementation on January 1, 1993
Mechanical Industry Standard of the People's Republic of China
Metering Pump Regulating Gauge
Subject Content and Scope of Application
JB/T6436-92
This standard specifies the type, basic parameters, technical requirements, test methods and inspection rules, marking, packaging and storage of regulating gauges for metering pumps (hereinafter referred to as "regulating gauges").
Reference standards
GB2829
GB7782
GB9236
ZBY002
ZBY003
Periodic inspection counting sampling procedure and sampling table (applicable to the inspection of production process stability)Basic parameters of metering pumps
Technical conditions for metering pumps
Basic environmental conditions and test methods for transportation and storage of instruments and metersGeneral technical conditions for instrument and meter packaging
Basic types and sizes of the pointer indicating part of industrial automation instruments and general requirements for pointersTypes and basic parameters
The type of the adjustable meter is: adjustable pointer indicating type. Model indication method:
Adjustable number of turns: indicated by Arabic numerals (see Table 1) Adjustment scale code
Model example: TLB-20
The adjustable number of turns of the adjustment scale is 20 turns:
The basic parameters of the adjustment scale are shown in the table below.
TLB-10Www.bzxZ.net
TLB-20
TLB-48
TLB-100
4 Technical requirements
General requirements
Number of adjustable circles
Stroke adjustment ratio
Outer ring scale
Inner ring scale
Circle 240° is divided into 10 grids
Circle 300° is divided into 20 grids
Circle 360° is divided into 48 grids
Circle 300° is divided into 100 grids
The adjustable meter shall be manufactured in accordance with the requirements of this standard and in accordance with the drawings and technical documents approved through the prescribed procedures. 4.2 Appearance
The paint layer of the outer shell and the coating of the bezel of the adjustable meter shall be evenly matched without damage, cracks, scratches and rust. Approved by the Ministry of Machinery and Electronics Industry on July 20, 1992. Appearance
$60×35
$80×36
Implemented on January 1, 1993
4.2.2 All text and symbols should be correct, eye-catching and clear. 4.3 Stroke adjustment error
JB/T6436-92
The stroke adjustment error of the adjustment meter is within the range of ±0.1%. 4.4 Repeatability error
The repeatability error of the adjustment meter is within the range of ±0.2%. 4.5 Sensitivity
When the minimum angle of rotation of the dial housing does not exceed 3°36”, the long needle should rotate. 4.6 Sealing
The dial gauge should not be exposed to water when placed in 150mm deep water for 1 hour. 4.7 Anti-transport environment performance
The dial gauge should comply with the provisions of ZBY002 under the conditions of transportation packaging. 4.8 Dial pointer display
4.8.1 The relative stroke mark should be marked on the dial: Sre,%. 4.8.2 The color of the dial shall comply with the provisions of ZBY122. 4.8.3 The pointer of the dial shall comply with the provisions of ZBY122. 4.9 Warranty period
Under the condition that the user complies with the provisions of the product manual of the dial gauge, within 2 years from the date of shipment of the pump (the service life shall not exceed 1 year), When the dial gauge is damaged or fails to work properly due to manufacturing quality, the manufacturer shall be responsible for replacing or repairing it for the user free of charge (excluding wearing parts).
5 Test method
5.1 Stroke adjustment error test
Connect the dial gauge to the dividing head (optical or general dividing head, whose minimum angle division value is less than 1'. The same below), adjust the long and short pointers of the dial gauge to zero, and adjust the dividing head reading to zero. Adjust the dial gauge with a stroke ratio of 1/10, and record the dividing head readings when the long pointer turns 2, 4, 6, 8, and 10 circles respectively; a.
Adjust the dial gauge with a stroke ratio of 1/10, and record the dividing head readings when the long pointer turns 1, 5, 10, 15, and 20 circles respectively; b.
Adjust the dial gauge with a stroke ratio of 1/48 Adjust the scale so that the long pointer rotates 1, 10, 20, 30, 40, 48 times, and record the dividing head reading respectively; adjust the scale to a stroke ratio of 1/100, so that the long pointer rotates 1, 10, 20, 50, 100 times, and record the dividing head reading respectively. The stroke adjustment error is calculated by formula (1):
, = [T/(n×360)-1]×100%
Where: .-stroke adjustment error,
T-the dividing head reading when the scale rotates to the specified number of times, (°); n is the specified number of times the scale rotates.
5.2 Repeatability error test
（1）
Connect the scale to the dividing head, and when the scale rotates to a certain position, record the dividing head reading. Reverse the dividing head to drive the scale to rotate several times, and then rotate forward The same number of turns will make the dial gauge return to its original position. Read the reading of the dividing head. The repeatability error is calculated according to formula (2):
8,=［(T,-T。)/360]×100%
Where: , — repeatability error of dial gauge; T。 — initial reading of dividing head, ();
T， — reading of dividing head when it returns to its original position, (°). · (2)
5.3 Sensitivity test
JB/T6436-92
Connect the dial gauge to the dividing head, rotate the dividing head 3°36\ in any direction, and the long pointer of the dial gauge will rotate accordingly. 5.4 Sealing test
Put the dial gauge into a container filled with water, immerse it in water at a depth of 150mm for 1h, and observe whether there is any water inside. 5.5 Test for resistance to transportation environment
The test method and procedure for resistance to transportation environment of the meter shall be carried out in accordance with the provisions of ZBY002. 6 Inspection rules
6.1·Each meter shall be inspected and qualified and accompanied by a product certificate before it can leave the factory. 6.2 The factory inspection shall be carried out in accordance with the following items and sequence: Inspection items
Appearance (inspected by visual inspection), (Category C); stroke adjustment error, (Category A);
Repeatability error, (Category B);
Sensitivity, (Category B).
Indicators of inspection items shall meet the requirements of Articles 5.2, 5.3, 5.4 and 5.5. 6.3 Type inspection
Type inspection shall be carried out in one of the following situations: 6.3.1
Trial production of new products;
The product has major changes in design, process or materials; When the product has been in normal production for two years.
6.3.2 Type inspection shall be carried out in accordance with the sequence and test methods of Chapter 5 and shall comply with the requirements of Chapter 4. 6.4 Sampling plan
6.4.1 Discrimination level II.
6.4.2 Sampling plan type: single sampling plan. 6.4.3 Discrimination array shall comply with the following provisions: Class A nonconformity (0, 1); Class B nonconformity (3, 4); Class C nonconformity (4, 5). 6.4.4 Rejection quality level (RQL) shall comply with the following provisions: Class A nonconformity RQL = 30; Class B nonconformity RQL = 100, Class C nonconformity RQL = 120. According to Table 2 of GB2829, the sample size n=5. 7 Marking, packaging and storage
7.1 Marking
The meter should have a nameplate or be marked on the dial: a.
Manufacturer name or factory logo;
Product model and name;
Stroke adjustment error;
Factory number;
Manufacture year and month.
7.2 Packaging
The meter can be packed in rainproof packaging or simple packaging as specified in ZBY003. 7.2.2
Accompanying documents
Packing list;
Product certificate;
7.3 Purchase and storage
JB/T6436-92
The meter should be stored in a room with a temperature of -10 to 55°C, a relative humidity not exceeding 80%, and ventilation without corrosive gases. The shelf life is 18 months.
Additional instructions:
This standard was proposed and managed by the Hefei General Machinery Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Hefei Instrument General Factory. The drafters of this standard were Qiu Xilong, Pan Zhengguang, and Tao Xiaoxing
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