|
US$399.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1401-2013: Calibration Specification for Vibrating Wire Frequency Readouts
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJF 1401-2013 | English | 399 |
Add to Cart
|
3 days [Need to translate]
|
Calibration Specification for Vibrating Wire Frequency Readouts
| Valid |
JJF 1401-2013
|
Standard similar to JJF 1401-2013 JJF 1033 JJF 1050 JJF 1030 Basic data | Standard ID | JJF 1401-2013 (JJF1401-2013) | | Description (Translated English) | Calibration Specification for Vibrating Wire Frequency Readouts | | Sector / Industry | Metrology & Measurement Industry Standard | | Word Count Estimation | 17,110 | | Quoted Standard | GB/T 3412.1-2009; GB/T 15406-2007 | | Regulation (derived from) | AQSIQ Announcement No. 63 of 2013 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine | | Summary | This standard applies to: the frequency range of 300Hz ~ 6000Hz-all types of vibrating wire frequency readout calibration. Other vibrating wire frequency measurement systems Calibration can refer to this standard. | JJF 1401-2013: Calibration Specification for Vibrating Wire Frequency Readouts---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.
Calibration Specification for Vibrating Wire Frequency Readouts
People's Republic of China National Metrology Technical Specifications
VW frequency reader calibration specification
Issued on. 2013-04-27
2013-07-27 implementation
The State Administration of Quality Supervision, Inspection and Quarantine released
VW frequency reader calibration specification
WireFrequency
Readouts
Focal point. the National Commission on Time and Frequency Measurement Technology
The main drafting units. China Testing Technology Research Institute
Shanghai Measurement and Testing Technology Research Institute
Participated in the drafting unit. CAS only real instrument development center
Sichuan Science and Technology Co., Ltd. Gold code
Chongqing Institute of Metrology and Quality Inspection
Xinjiang Institute of Metrology
Ge-Nan Industrial Co., Ltd. Nanjing
This specification entrust national time and frequency measurement technical committee responsible for the interpretation
The main drafters of this specification.
Guo Chunmei (China Testing Technology Research Institute)
Dong Lin (Shanghai Institute of Measurement and Testing)
Drafters participate.
Ye Zhong Pro (CAS only real instrument development center)
Yang Bo (Sichuan Code Technology Co., Ltd.)
Zhugui Jun (Chongqing Institute of Metrology and Quality Inspection)
Song Wei (Xinjiang Institute of Measurement and Testing)
Xu Gang (Nanjing Ge-Nan Industrial Co., Ltd.)
table of Contents
Introduction (Ⅱ)
1 Scope (1)
2. References (1)
3 terminology and units of measurement (1)
3.1 vibrating wire sensors (1)
3.2 Incentive (1)
3.3 Vibrating frequency reader (1)
3.4 set Boxes (1)
3.5 frequency module (1)
4 Overview (1)
5 Metrological characteristics (2)
5.1 incentives (2)
5.2 Frequency measurement range and measurement error (2)
5.3 Frequency measurement resolution (2)
5.4 timebase accuracy (3)
6 calibration conditions (3)
Environmental conditions 6.1 (3)
6.2 standards and other measuring equipment (3)
7 calibration items and calibration methods (3)
7.1 calibration items (3)
7.2 Calibration method (3)
8 calibration results expression (6)
9 Recalibration interval (7)
Appendix A calibration original record format (8)
Appendix B Calibration Certificate page format (9)
Appendix C vibrating wire frequency reader Evaluation of Uncertainty in Measurement Example (10)
Introduction
This specification based JJF 1071-2010 "National Calibration Specifications writing rules" establishment.
This specification reference to GB/T 3412.1-2009 "dam monitoring instrument detector Part 1. vibrating wire instrument
Control detector "; GB/T 15406-2007" geotechnical engineering instrument basic parameters and general technical conditions "relating to the vibrating wire
The basic parameters of instruments received the instrument, the instrument receives technical requirements for entry in conjunction with such general-purpose products conventional techniques
Surgery requirements. The specification for the first time to develop.
VW frequency reader calibration specification
1 Scope
This instruction applies calibration 300Hz ~ 6000Hz various types of vibrating wire frequency reader in the frequency range. its
He vibrating wire frequency measurement calibration system can refer to this specification.
2. References
This specification references the following documents.
GB/T 3412.1-2009 dam monitoring instrument detectors - Part 1. VW instrument detector
GB/T 15406-2007 geotechnical engineering instrument basic parameters and general technical conditions
For dated references, only the dated edition applies to this specification; undated references
The latest version (including with amendments) apply to this specification.
3 terminology and units of measurement
3.1 vibrating wire sensors vibratingwiretransducer
Use of vibrating wire sensors to measure changes in the natural frequency of the relevant parameters.
3.2 excitation excitation
External energy (voltage, current, etc.) from the sensor to work properly applied.
3.3 Vibrating frequency reader vibratingwirefrequencyreadout
It has to provide incentives for the signal vibrating wire sensors, measuring sensor output frequency, frequency or frequency display module
Etc., and have the data storage, communication and other functions of special instruments.
3.4 hub box terminalbox
Connecting the sensor, with manual or automatic measuring point switching function of special equipment.
3.5 Frequency modulus frequencymodulus
Vibrating wire sensor output frequency f (Hz) divided by the square of 1000 the value obtained. English letters F, he said
That is. F = f2 × 10-3.
4 Overview
Metal strings at a certain tension, stress has a certain natural frequency, vibration theory elastomer according push
Guide, natural frequency string chord suffered tension, stress was a single-valued function. Various types of vibration manufactured based on this principle
String instruments are used in wide range of safety monitoring dams, tunnels, highways, bridges, mines and construction project.
VW frequency reader (hereinafter referred to as vibrating wire instrument) for the vibrating wire sensor readings instrument designed to measure
Frequency vibrating wire sensor output, physical access to relevant projects through the measured frequency.
NOTE. VW frequency reader in GB/T 3412.1-2009 designated as "vibrating wire instrument detector."
VW instrument by the time base and the main control circuit, the excitation signal generating circuit, a detection circuit and a display storage circuit group
A working principle shown in Figure 1.
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of JJF 1401-2013_English be delivered?Answer: Upon your order, we will start to translate JJF 1401-2013_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of JJF 1401-2013_English with my colleagues?Answer: Yes. The purchased PDF of JJF 1401-2013_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.
|