JJG 815-1993 Verification Procedure for Electronic Blood Collection Scales JJG815-1993 Standard download decompression password: www.bzxz.net
This procedure is applicable to the static and dynamic verification of newly manufactured, in-use and repaired electronic blood collection scales.

People's Republic of China National Metrology Verification Regulations JJG815-1093
Electronic Blood Sampling Scale
Taking Hloud Elerctronic Scalc1993-03-01 Issued
1993 -07-01 Implementation
State Technical Supervision Bureau Issued
.:815-19493
Electronic Blood Sampling Scale Verification Regulations
Yerificacion Regulation of TakingBloud Elertrunic Seale
JJG 815—1993
This verification procedure was approved by the State Technical Supervision Bureau on March 1, 193, and will be implemented from January 1, 1993:
Responsible unit: Qingdao Standard Measurement and Measurement Bureau
Drafting unit:
Jinan Military Region Blood Products Research Institute
The drafting unit is responsible for interpreting the technical provisions of this procedure. The main drafters of this procedure:
Zhang Fengguo
Yuan Qingnuo
Zhang Xiaomi
Participating drafters:
Li Huitong
Li Youhan
JJ1s1993
[Jinan Military Region Blood Products Research Institute]
(Jinan Military Region Blood Products Research Institute)
(Jinan Military Region Blood Products Research Institute)
(Jinan Military Region Blood Products Research Institute)
[Jinan Military Region Blood Products Research Institute]
Technical requirements
Test conditions
That is, test items and test methods
Test result processing
Test cycle
JJE:15
(1)
(2)
(3)
JJGB151993
Test procedure for electronic blood collection scales
The regulations apply to new manufactures, static and dynamic tests of electronic blood collection scales during use and after use: All regulations apply to
Electronic blood collection scales (cylinder blood collection scales) are special scales used for collecting liquids, and are usually used in a dynamic state. It is composed of source conversion, digital minimum, weighing sensor, light alarm and swing 5 parts to technical requirements bzxz.net
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blood sampling evaluation has the following signs:
name or trademark
specification model:
product number;
accuracy level;
maximum value: Ma.r.
Division value: n=
Manufacturing year and month:
Manufacturing license mark, number:
2 Structure
2.1 The structure of the blood sampling scale should meet the requirements of on-site blood sampling, and the structure should be reasonable and practical. The performance and pressure in use should be clearly stated, and the operation should be flexible and reliable: 2.2
The swinging part of the scale plate should be tightly combined with the bracket 2.4
Dynamic, static, the scale belt can be kept to a horizontal state, and the angle should be controlled in the range of [0\--15\ 2.5
2.0 The swinging times of the scale plate should be controlled in the range of 30~32 times/min. The digital display should be clear and the stable display time should be long. 54 large scales should have adjustments, in addition to the support and overload indication, etc., the technical police can set 20 400 points, and more than two points of insulation performance of the blood collection department can meet the relevant technical requirements: its original state light table 1
allowable error table and table
when evaluated by the leakage current of 2A and within 1m not too "kW machine output equipment 1 interference, the hand shows
10 discrimination power
.1.IG815—1993
protection state specification is the load: to evaluate the impact pool release or take away 1.4 code: the six values ​​​​change
accurate screening degree, etc.
accurate level
science and technology in the following system science inspection spot
1.1 environmental temperature quality
2 -20
New and after repair
Allowable error assessment
New design and after performance
..1.02
3 Verification conditions
Use from October
+ 2. 115%
The system should be able to work within the temperature range of the city. During verification, the temperature difference within the ambient temperature is taken as A-5
11.2 Environmental sensitivity
11.3 Power supply
The meter changes by 1%
The allowable variation is:
12 Standard instrument
315:815.-1993
2.1. 112.2 Dynamic verification uses special quality meals, and its error is not longer than 1/3 of the allowable error of extreme inspection weighing. It should be packed in plastic towels and bags: the internal teaching steaming increase is required, and the value is 20 and 400 guests-one 13 ground equipment
angle measuring instruments, stopwatch and megohmmeter, etc., four
14 Appearance inspection
Verification items and verification methods
Inspection The appearance of the blood is heavy. Are the marks, structures and function keys in good condition? Technical requirements: 15 Check whether the swing intensity and number of movements of the weighing pan meet the requirements. 16 Confirm the state of weighing. 16.1 Variable calibration. 11 Place the blood sample in the correct position, adjust the weighing pan to water state, connect the power supply, and the preheating time shall not exceed 2min. 16.1.2 Zero adjustment. 16.1.2.1 Press the adjustment key to measure zero, the weighing pan should be stable within 53 seconds. 16.1.2.2 When the scale pan is inverted, switch 3 and observe the change of position. 16.2 Energy Saving
Place a weight not greater than 200 on the scale pan 1, press the power button, the scale should display 16.3 Offset Inspection
Place the weight at 2 ends of the scale pan in the center, and then at the other end, as shown in the figure. The difference between the indicated values ​​should not exceed the allowable error of the scale pan, 1
[6,4. Scale Verification
Inspection is the inspection of the scale. [6.5 Discrimination Verification
When the inspection is extended to 20F and 40F, the inspection is the discrimination specified in Article 10. 16.7 In the repeated weighing, weigh the natural calcium of the store 3 times, and the error of 2 times shall not exceed 60% of the absolute value of the error. Before each repeated weighing: zero adjustment is allowed. 16,8 During the calibration process, the error of the empty scale and the selected scale shall not exceed the standard of 2 meters. 16,9 For the fully dynamic electric scale, dynamic calibration is not required. 16.10 During the calibration process, the digital correction error can be corrected. 17 Emergency calibration
Respectively 2), 400 quality car I put the blood collection user on the rod plate, start the automatic switch, let the scale plate swing continuously for 2 times, after stepping on H, start to collect the small signal difference of 10 times each time, the small value difference of the previous time shall not be manually specified
18 Temporary calibration
18.1 Set and change according to the deployment limbs at 200 and 400 customers: on the scale plate 1 mark still, the calibration alarm function. 18.2 Alarm calibration: in static and dynamic conditions, set 3 times each for 5 calibration results processing and calibration cycle
1 For blood collection scales that pass the calibration, the unified calibration certificate will be issued: for blood collection scales that fail the calibration, the calibration result will be reversed.
The calibration cycle of the blood collection process is up to "years,
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