JJF(冀) 215-2023 跨孔超声波检测仪校准规范

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地

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计

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技

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范JJF(冀)—2023跨孔超声波检测仪校准规范Calibration

Cross-hole

Ultrasonic

Detectors2023-08-02

发布 2023-11-01

实施

发

布JJF(冀)215—2023跨孔超声波检测仪校准规范Calibration

Cross-holeUltrasonic

Detectors

JJF（冀）2023JJF(冀)215—2023归

口

单

河北省市场监督管理局主要起草单位：

河北省计量检测技术中心参加起草单位：

河北省计量监督检测研究院本规范委托起草单位负责解释JJF(冀)215—2023王 阎海锋（河北省计量监督检测研究院）周建林（河北业巨计量检测有限公司）参加起草人：宫宏智（河北省计量监督检测研究院）JJF(冀)215—2023········································································································（

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水中超声速度随温度的变化

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校准原始记录参考格式

···································································（

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1

3

）IJJF(冀)215—2023 JJF

JJFJJFJJG990

《无损检测术语

质量控制现状制定。IIJJF(冀)215—2023跨孔超声波检测仪校准规范 JJG

《声学

水声换能器测量》

《无损检测术语

超声检测》

《无损检测

材料超声速度测量方法》CECS21凡是注日期的引用文件，仅注日期的版本适用于本规范；凡是不注日期的引用文件，

time

声波在介质中传播的时间。

在非频散介质中声波沿传播方向行进的相速度或群速度。 能器超声波检则主用于跨孔法检混凝土灌桩身整性和大体 电信号测量相对误差应不大于±0.5%声信号测量相对误差1JJF(冀)215—2023平面换能器测量相对误差应不大于±1.0%，径向换能器测量相对误差应不大于±2.0%±，总线性范围不低于产品技术指标要求。±5% 20±520±5 220±1150±0.5 1kHz±0.5dB以下常规幅值测量优于±1.5%±5%0Hz，准确度：±0.5%A+0.02dB±0.05mm 2序号校准项目技术要求条款校准方法条款1声时测量相对误差（电信号方法）5.1.17.2.22平面换能器声时测量（声信号方法）5.1.27.2.33径向换能器声时测量（声信号方法）5.1.27.2.44幅值测量级线性5.27.2.55发射电压幅值稳定度5.37.2.6JJF(冀)215—2023表

1校准项目一览表表

1校准项目一览表

100μs

检测仪的声时和信号发生器的延迟时间，计算得到的电信号声时测量相对误差。tttt

100%t1

μs2

μs电信号声时相对误差，

Burst(

图

1超声波检测仪声时测量（电信号方法）校准接线示意图 3JJF(冀)215—60mm120mm180mm±0.5t

d

1T)

（2）tt

100%

℃时空气的声速，m/s空气温度，℃； 两换能器之间相对距离， ttt

（3）1

μs2μs

图

2平面换能器声时测量相对误差（声信号）校准接线示意图 两个换能器轴线间距先后调节在12，分别读取相应的声时值t1、t2由超声波检测仪、t0t0

1

t2

2

t1L1

L2

（4）将径向能器放置于消声水槽并全部浸没于水中，两个换能器应处于同一水平面上，消4JJF(冀)215—2023

其声时测量值与理论计算值计算声时测量相对误差。t

dv

(5)

两换能器中心轴线间距，

——m/s

声时相对误差按（注：v

是查附录A所得。

图

3径向换能器测量相对误差（声信号）校准接线示意图 加或减少衰减器的输出值，每次测量均需调节超声波检测仪接收信号为满屏的Burst(图

4幅值测量级线性校准接线示意图5JJF(冀)215—2023 15min与最小值之差相对于平均值的幅值变化。

(V

V)V

100%

（6）

max

min

图

5发射电压幅值稳定度校准接线示意图

6JJF(冀)215—2023 7m/s3

in/sm/s3

in/s冀)215—2023附录

A水中超声速度随温度的变化表

A.1表

A.1 水中超声速度随温度的变化注：引自GB/T

《无损检测

材料超声速度测量方法》序号标准声时（us）测量声时（us）误差（%）123456*序号移动距离（mm）声速（）标准声时（μs）测量声时（μs）误差（%）12345序号移动距离（mm）声速（）标准声时（μs）测量声时（μs）误差（%）12345冀)215—2023附录

B校准原始记录参考格式 表

外观检查声时测量相对误差（电信号）表

声时测量相对误差（电信号）

表

声时测量相对误差（电信号）

平面换能器声时测量（声信号）表

平面换能器声时测量（声信号）

径向换能器声时测量（声信号）表

径向换能器声时测量（声信号）

声波检测仪幅值（dB）声波检测仪幅值衰减值（）衰减器衰减值（dB）幅值测量级线性误差（dB）时间电压值冀)215—2023表

表

幅值测量级线性

表

发射电压幅值稳定度10序号标准声时（μs）测量声时（μs）误差（%）123456*序号移动距离（mm）声速（）标准声时（μs）测量声时（μs）误差（%）12345序号移动距离（mm）声速（）标准声时（μs）测量声时（μs）误差（%）12345冀)215—2023附录

C校准证书内页格式C.1 表

外观检查C.2 声时测量相对误差（电信号）表

声时测量相对误差（电信号）C.3

表

声时测量相对误差（电信号）C.3

平面换能器声时测量（声信号）表

平面换能器声时测量（声信号）C.4

径向换能器声时测量（声信号）表

径向换能器声时测量（声信号）C.5

声波检测仪幅值（dB）声波检测仪幅值衰减值（）衰减器衰减值（dB）幅值测量级线性误差（dB）时间电压值冀)215—202312uc

t

c2

t1

u2

uc

t

c2

t1

u2

t1

c2

d

u2

d

c2

T

u2

T

ct1

t

t1

附录

D 平面换能器声时测量

t

t1d/331.4

10.00367T

td

T

——空气温度，℃。

ft1,d,T

1

21(

)

d

/331d

/331.4

1/2

10.00367T

t

T

3/2

0.003670.3106

1

13标准不确定度来源标准不确定度灵敏系数不确定度分量测量重复性u(t)0.12

μsC(t)：0.12

μs60mm距离测量不准确u(d)2.5×10

mC(d)：-0.00290.072

μs温度测量不准确及允许变化范围u(T)0.31

℃C(T)：0.093

μs测量次数12345678910测量值/μs173.4173.4173.3173.2173.5173.4173.6173.3173.4173.5冀)215—2023表

D.1 表重复性引入的不确定度

1表

D.1 表重复性引入的不确定度

=0.05mmu(d

)

U

/k

/2103

m）温度允许变化范围引入的不确定度，规程要求温度最大允许变化范围为℃，

3uT1

U

/k

0.5

/

3

0.289℃

u

T2

U

/k

/2℃uT1

uT2

uT

u2

T1

u2

T2

0.31℃ 合成标准不确定度汇总表D.2)表

D.2标准不确定度分量汇总表表

D.2标准不确定度分量汇总表u

t

2

t1

u2

t1

2

d

u2

d

2

T

u2

T

2uc(t)

2

2

2

s

，则扩展不确定度：U

(t)2

0.170.3414测量次数12345678910测量值/μs40.440.440.340.440.440.340.540.440.340.4Ur

100%0.20%uc

Ur

100%0.20%uc

t

c2

t1

u2

t1

c2

d

u2

d

c2

T

u2

T

ct1

t

t1

0.34173.4 Δtt1

d

/

2.5

(T

td

T

——空气温度，℃。

t1,d,

1

21c(d

)c(T)

((d

)

(

t)(T)

1/T

0.00067

T=d

2.5T)22.50.068106

1

表

D.3表重复性引入的不确定度

1表

D.3表重复性引入的不确定度151

C(1

C(

C(

冀)215—2