JJF(浙) 1207-2024 數(shù)字折射儀及含量計(jì)校準(zhǔn)規(guī)范

CalibrationspecificationofDigitalRefractometersandDigitalContent-meters2024-03-01發(fā)布202JJF（浙）1207-2024數(shù)字折射儀及含量計(jì)校準(zhǔn)規(guī)范CalibrationspecificationofDigitalRefractometersandDigitalContent-meteJJF（浙）1207-2024I （II） （2） （2） （2） （2） （4） （6） （6） （9） （20） （21）IIJJF1001-2011《通用計(jì)量術(shù)語(yǔ)及定義》、JJF1071-2010《國(guó)家計(jì)量校準(zhǔn)規(guī)范編寫規(guī)則》和JJF1059.1-2012《測(cè)量不確定度評(píng)定與表示》共同構(gòu)成支撐本規(guī)范的編寫參考JJG820-1993《手持糖量(含量)計(jì)及手持折射儀》、OIMLR124：1997（E）《測(cè)量葡萄汁糖含量折射儀（Refractometersforthemeasurementofthesugarcontentofgrapemust）》、OIMLR14(E)《全自動(dòng)折射儀：驗(yàn)證方法和手段(Automatedrefractometers:Methodsandmeansofverification)》等相關(guān)標(biāo)數(shù)字折射儀及含量計(jì)校準(zhǔn)規(guī)范本規(guī)范適用于折射率為（1.3～1.7）的數(shù)字折射儀OIMLR124：1997（E）測(cè)量葡萄汁糖含量折射儀（RefractometersforOIMLR142：2008（E）全自動(dòng)折射儀：驗(yàn)證方法和手段refractometers:Methodsandmeansofveri凡是注日期的引用文件，僅注日期的版本適用于本規(guī)范；凡是不注日期的OIMLR124：1997（E）界定的及以下術(shù)語(yǔ)光在真空中的傳播速度與光在介質(zhì)中的傳播速度之比。本規(guī)范所指的折射數(shù)字折射儀及含量計(jì)是利用折射、全反射臨含量的儀器。數(shù)字折射儀及含量計(jì)主要由光源、棱鏡、控制系統(tǒng)、顯示器等組成，部分?jǐn)?shù)字折射儀及含量計(jì)還），2表1計(jì)量特性顯示單元分辨力校準(zhǔn)項(xiàng)目數(shù)字折射儀數(shù)字含量計(jì)≥0.0001＜0.0001≥0.1%＜0.1%溫度示值誤差儀器示值誤差±0.0005±0.0002重復(fù)性≤0.00025≤0.0001≤0.25%≤0.05%注：以上所有指標(biāo)不用于合格性判定，僅供參考。注：對(duì)于不具備控溫功能的儀器，要求環(huán)境溫度為（20±2）℃。JJF（浙）1207-20243優(yōu)先采用經(jīng)國(guó)家計(jì)量行政部門批準(zhǔn)的折射率溶液標(biāo)準(zhǔn)物質(zhì)、蔗糖水溶液標(biāo)準(zhǔn)物質(zhì)。折射率溶液標(biāo)準(zhǔn)物質(zhì)測(cè)量范圍（nD）為（1.3330～1.6580），擴(kuò)展不確定度U=0.0002（k=2）；蔗糖水溶液標(biāo)準(zhǔn)物質(zhì)測(cè)量范圍為（0～50）%，擴(kuò)展標(biāo)準(zhǔn)物質(zhì)也可按照附錄D方法進(jìn)行制備和定值，蔗糖水溶液的折射率值參1）V棱鏡折射儀，液體折射率測(cè)量范圍（nD）：1.30000～1.70000，最大儀器開機(jī)預(yù)熱就緒后，應(yīng)先按照儀器說明書以（調(diào)節(jié)零點(diǎn)）。對(duì)于不具備控溫功能的儀器，儀器與注：每次測(cè)量之間應(yīng)使用無水乙醇等進(jìn)行清潔，再用脫脂棉或者吸濕紙擦干。在儀器測(cè)量室中加入測(cè)量所需體積的純水，將數(shù)字溫度4 T設(shè)置儀器測(cè)量室溫度為20℃,在儀器測(cè)量范圍內(nèi)均勻選取不準(zhǔn)點(diǎn)，從低濃度點(diǎn)到高濃度點(diǎn)的順序進(jìn)行測(cè)量。在儀器測(cè)量室中加入相應(yīng)的折射率標(biāo)準(zhǔn)溶液，待儀器示值穩(wěn)定后，讀取儀器的示值，每個(gè)校準(zhǔn)點(diǎn)重復(fù)測(cè)量3 ΔZ=Z-Z0（2）ΔZ——數(shù)字折射儀的示值誤差； Z0——標(biāo)準(zhǔn)溶液標(biāo)準(zhǔn)值。使用自行配制的標(biāo)準(zhǔn)溶液，參照進(jìn)行測(cè)量，在示值誤差測(cè)量的同時(shí)，還需記錄被測(cè)儀器顯示的溫度t，按附錄G的方法計(jì)算折射率修正值kZ，kZ——折射率在t℃時(shí)修正值；Z+kZ——儀器3次修正后的測(cè)量值的平均值。設(shè)置儀器測(cè)量室溫度為20℃,在儀器測(cè)量范圍內(nèi)均勻選取不5準(zhǔn)點(diǎn)，從低濃度點(diǎn)到高濃度點(diǎn)的順序進(jìn)行測(cè)量。在儀器測(cè)量室中加入相應(yīng)的蔗 ΔD=D-D0（4） D0——標(biāo)準(zhǔn)溶液標(biāo)準(zhǔn)值，%。參照進(jìn)行測(cè)量，在示值誤差測(cè)量的同時(shí)，還需記錄被測(cè)儀器顯示的溫度t，根據(jù)溫度t查附錄E，得到糖含量修正值kD，按公式（5）計(jì)算示值kD——糖含量在t℃時(shí)修正值，%；D+kD——儀器3次修正后的測(cè)量值的平均值，%。選擇儀器量程中間點(diǎn)附近的標(biāo)準(zhǔn)溶液，對(duì)儀器進(jìn)行xi——儀器第i次測(cè)量值； JJF（浙）1207-20246）；），g)進(jìn)行校準(zhǔn)的日期，如果與校準(zhǔn)結(jié)果的有效性和應(yīng)用有關(guān)時(shí)，應(yīng)說明被校h)如果與校準(zhǔn)結(jié)果的有效性應(yīng)用有關(guān)時(shí)，應(yīng)對(duì)被校樣品的抽樣程序進(jìn)行說建議復(fù)校時(shí)間間隔為1年。送校單位也可根據(jù)實(shí)際使用情況自主決定復(fù)校JJF（浙）1207-20247：％校準(zhǔn)所用主要計(jì)量標(biāo)準(zhǔn)器名稱測(cè)量范圍不確定度/準(zhǔn)確度等級(jí)/最大允許誤差檢定/校準(zhǔn)單位及證書號(hào)有效日期校準(zhǔn)點(diǎn)(℃)項(xiàng)目測(cè)量值(℃)測(cè)量平均值(℃)示值誤差(℃)123標(biāo)準(zhǔn)示值儀器示值標(biāo)準(zhǔn)示值儀器示值標(biāo)準(zhǔn)示值儀器示值2、儀器示值誤差:標(biāo)準(zhǔn)值測(cè)量值無溫度控制功能填寫測(cè)量平均值示值誤差不確定度U(k=2)溫度t(℃)t℃時(shí)修正值JJF（浙）1207-20248標(biāo)準(zhǔn)值測(cè)量值無溫度控制功能填寫測(cè)量平均值（%）示值誤差不確定度U(k=2)溫度t(℃)t℃時(shí)修正值（%）校準(zhǔn)點(diǎn)測(cè)量值重復(fù)性123456JJF（浙）1207-20249校準(zhǔn)點(diǎn)(℃)標(biāo)準(zhǔn)示值(℃)儀器示值(℃)溫度示值誤差(℃)標(biāo)準(zhǔn)值測(cè)量平均值示值誤差不確定度U（k=2）JJF（浙）1207-2024儀器開機(jī)調(diào)整就緒后，分別滴入相應(yīng)的折射率 ΔZ=Z-Z0（C.1） Z0——標(biāo)準(zhǔn)溶液標(biāo)準(zhǔn)值。 方差：u(ΔZ)=cu2(Z)+cu2(Z0) C.1.3.1輸入量Z的標(biāo)準(zhǔn)不確定度u(Z)來源于測(cè)量重復(fù)性引入的標(biāo)準(zhǔn)不確定度分量u1(Z)和儀器分辨力引入的標(biāo)準(zhǔn)不確定度分量u2(Z)；C.1.3.2輸入量Z0的標(biāo)準(zhǔn)不確定度u(Z0)來源于標(biāo)準(zhǔn)溶液定值引入的標(biāo)準(zhǔn)不確定度分量u1(Z0)和定值溫度影響引入的標(biāo)準(zhǔn)不確定度分量u2(Z0)。 C.1.4.1輸入量Z標(biāo)準(zhǔn)不確定度u(Z)評(píng)定 C.測(cè)量重復(fù)性引入的標(biāo)準(zhǔn)不確定度分量u1(Z)1.34813、1.34812、1.34813、1.34815、1.34813、1.34816、1.34814、JJF（浙）1207-2024實(shí)際測(cè)量時(shí)，取3次測(cè)量的算術(shù)平均值作為測(cè)量結(jié)果，n=3，則標(biāo)準(zhǔn)不確 C.儀器分辨力引入的標(biāo)準(zhǔn)不確定度分量u2(Z)由于重復(fù)性不確定度分量包含儀器分辨力引入的不確定度分量，為避免重u(Z)=0.000007C.1.4.2輸入量Z0標(biāo)準(zhǔn)不確定度u(Z0)評(píng)定C.標(biāo)準(zhǔn)溶液定值引入的標(biāo)準(zhǔn)不確定度分量u1(Z0)標(biāo)準(zhǔn)溶液采用V棱鏡折射儀定值，V棱鏡折射儀允許誤差為±0.00005，其半寬度a=0.00005，服從均勻分布，取k=則標(biāo)準(zhǔn)不確定度為：C.定值溫度影響引入的標(biāo)準(zhǔn)不確定度分量u2(Z0)折射儀定值要求溫度控制在（20±0.3表以及蔗糖質(zhì)量分?jǐn)?shù)折射率對(duì)照表等相關(guān)資料，估得其半寬度a≈0.000031，服從均勻分布，取k=則標(biāo)準(zhǔn)不確定度為：JJF（浙）1207-2024C.標(biāo)準(zhǔn)不確定度u(Z0)的計(jì)算標(biāo)準(zhǔn)不確定度u(xi)不確定度來源標(biāo)準(zhǔn)不確定度靈敏系數(shù)c(xi)lc測(cè)量重復(fù)性0.00000710.000007u(Z0)標(biāo)準(zhǔn)溶液0.000034-10.000034U=k×uc(ΔZ)=0.00007JJF（浙）1207-2024儀器開機(jī)調(diào)整就緒后，分別滴入相應(yīng)的糖含量 D0——標(biāo)準(zhǔn)溶液標(biāo)準(zhǔn)值，%。C.2.3.1輸入量D的標(biāo)準(zhǔn)不確定度u（D）度分量u12定度分量u1 10.19%、10.21%、10.22%、10.18%、10.22%、10.23%、10.21%、10.23%、JJF（浙）1207-2024實(shí)際測(cè)量時(shí)，取3次測(cè)量的算術(shù)平均值作為測(cè)量結(jié)果，n=3，則標(biāo)準(zhǔn)不確 數(shù)字含量計(jì)的分辨力為：0.01%，其半寬度a=0.005%，服從均勻分布，取由于重復(fù)性不確定度分量包含儀器分辨力引入的不確定度分量，為避免重 標(biāo)準(zhǔn)溶液采用V棱鏡折射儀定值，V棱鏡折射儀允許誤差為±0.00005，根據(jù)蔗糖質(zhì)量分?jǐn)?shù)折射率對(duì)照表，換算其半寬度a≈0.032%，服從均勻分布，取 折射儀定值要求溫度控制在（20±0.3表以及蔗糖質(zhì)量分?jǐn)?shù)折射率對(duì)照表等相關(guān)資料，估得其半寬度a≈0.021%，服從均勻分布，取k=則標(biāo)準(zhǔn)不確定度：JJF（浙）1207-2024標(biāo)準(zhǔn)不確定度u(xi)不確定度來源標(biāo)準(zhǔn)不確定度靈敏系數(shù)c(xi)lc測(cè)量重復(fù)性0.0096%10.0096%標(biāo)準(zhǔn)溶液0.022%-10.022%JJF（浙）1207-2024配制標(biāo)準(zhǔn)溶液選取蔗糖（純度99.9%及以上），在（100～110）℃下烘干2h，移入干燥器中冷卻至環(huán)境溫度。根據(jù)需要配制的糖液含量，用電子天平分別稱取糖的質(zhì)量Ws及水的質(zhì)量Wa。用電子天平稱空瓶質(zhì)量W0，逐步移入蔗糖至瓶中，稱量至W1=W0+Ws,逐漸加純水至瓶中，稱量至W2=W0+Ws+Wa,使其配制后的溶液采用V棱鏡折射儀定值，折射儀溫度控制在（20±0.3）℃范JJF（浙）1207-2024蔗糖g/100g0.00.901.3329861.3331291.3332721.3334151.3335581.3337021.3338451.3339891.3341321.33427611.3344201.3345641.3347081.3348521.3349961.3351411.3352851.3354301.3355741.33571921.3358641.3360091.3361541.3363001.3364451.3365901.3367361.3368821.3370281.33717431.3373201.3374661.3376121.3377581.3379051.3380511.3381981.3383451.3384921.33863941.3387861.3389331.3390811.3392281.3393761.3395241.3396711.3398191.3399671.34011651.3402641.3404121.3405611.3407091.3408581.3410071.3411561.3413051.3414541.34160461.3417531.3419031.3420521.3422021.3423521.3425021.3426521.3428021.3429521.34310371.3432531.3434041.3435551.3437061.3438571.3440081.3441591.3443111.3444621.34461481.3447651.3449171.3450691.3452211.3453731.3455261.3456781.3458311.3459831.34613691.3462891.3464421.3465951.3467481.3469021.3470551.3472091.3473621.3475161.3476701.3478241.3479781.3481331.3482871.3484421.3485961.3487511.3489061.3490611.3492161.3493711.3495271.3496821.3498381.3499931.3501491.3503051.3504611.3506171.3507741.3509301.3510871.3512431.3514001.3515571.3517141.3518711.3520291.3521861.3523431.3525011.3526591.3528171.3529751.3531331.3532911.3534491.3536081.3537671.3539251.3540841.3542431.3544021.3545611.3547211.3548801.3550401.3551991.3553591.3555191.3556791.3558401.3560001.3561601.3563211.3564821.3566421.3568031.3569641.3571261.3572871.3574481.3576101.3577721.3579331.3580951.3582571.3584201.3585821.3587441.3589071.3590701.3592321.3593951.3595581.3597221.3598851.3600481.3602121.3603761.3605391.3607031.3608671.3610321.3611961.3613601.3615251.3616901.3618541.3620191.3621851.3623501.3625151.3626811.3628461.3630121.3631781.3633441.3635101.363676201.3638421.3640091.3641761.3643421.3645091.3646761.3648431.3650111.3651781.365346211.3655131.3656811.3658491.3660171.3661851.3663541.3665221.3666911.3668591.367028221.3671971.3673661.3675351.3677051.3678741.3680441.3682141.3683841.3685541.368724231.3688941.3690641.3692351.3694061.3695761.3697471.3699181.3700901.3702611.370433241.3706041.3707761.3709481.3711201.3712921.3714641.3716371.3718091.3719821.372155251.3723281.3725011.3726741.3728471.3730211.3731941.3733681.3735421.3737161.373890261.3740651.3742391.3744141.3745881.3747631.3749381.3751131.3752881.3754641.375639271.3758151.3759911.3761671.3763431.3765191.3766951.3768721.3770491.3772251.377402JJF（浙）1207-2024蔗糖g/100g775791.3777561.3779341.3781111.3782891.3784671.3786441.3788221.3790011.3791791.3793571.3795361.3797151.3798931.3800721.3802511.3804311.3806101.3807901.3809691.3811491.3813291.3815091.3816901.3818701.3820501.3822311.3824121.3825931.3827741.3829551.3831371.3833181.3835001.3836821.3838631.3840461.3842281.3844101.3845931.3847751.3849581.3851411.3853241.3855071.3856911.3858741.3860581.3862421.3864261.3866101.3867941.3869781.3871631.3873481.3875321.3877171.3879021.3880881.3882731.3884591.3886441.3888301.3890161.3892021.3893881.3895751.3897611.3899481.3901351.3903221.3905091.3906961.3908841.3910711.3912591.3914471.3916351.3918231.3920111.3922001.3923881.3925771.3927661.3929551.3931441.3933341.3935231.3937131.3939031.3940921.3942831.3944731.3946631.3948541.3950441.3952351.3954261.3956171.3958091.3960001.3961921.3963831.3965751.3967671.3969591.3971521.3973441.3975371.3977301.3979221.3981161.3983091.3985021.3986961.3988891.3990831.3992771.3994711.399666401.3998601.4000551.4002491.4004441.4006391.4008341.4010301.4012251.4014211.401617411.4018131.4020091.4022051.4024011.4025981.4027951.4029921.4031891.4033861.403583421.4037811.4039781.4041761.4043741.4045721.4047701.4049691.4051671.4053661.405565431.4057641.4059631.4061631.4063621.4065621.4067621.4069611.4071621.4073621.407562441.4077631.4079641.4081651.4083661.4085671.4087681.4089701.4091711.4093731.409575451.4097771.4099801.4101821.4103851.4105881.4107901.4109941.4111971.4114001.411604461.4118081.4120111.4122151.4124201.4126241.4128281.4130331.4132381.4134431.413648471.4138531.4140591.4142651.4144701.4146761.4148821.4150891.4152951.4155021.415708481.4159151.4161221.4163301.4165371.4167441.4169521.4171601.4173681.4175761.417785491.4179931.4182021.4184111.4186201.4188291.4190381.4192471.4194571.4196671.4198771.4200871.4202971.4205081.4207181.4209291.4211401.4213511.4215621.4217741.4219851.4221971.4224091.4226211.4228331.4230461.4232581.4234711.4236841.4238971.4241101.4243231.4245371.4247501.4249641.4251781.4253931.4256071.4258211.4260361.4262511.4264661.4266811.4268961.4271121.4273281.4275431.4277591.4279751.4281921.4284081.4286251.4288421.4290591.4292761.4294931.4297111.4299281.4301461.4303641.4305821.4308001.4310191.4312381.4314561.4316751.4318941.4321141.4323331.4325531.4327731.4329931.4332131.4334331.4336531.4338741.4340951.4343161.4345371.4347581.4349801.4352011.4354231.4356451.4358671.4360891.4363121.4365351.4367571.4369801.437203JJF（浙）1207-2024蔗糖g/100g0.0374271.4376501.4378741.4380981.4383221.4385461.4387701.4389941.4392191.4394441.4396691.4398941.4401191.4403451.4405711.4407961.4410221.4412481.4414751.441701601.4419281.4421551.4423821.4426091.4428361.4430641.4432921.4435191.4437471.443976611.4442041.4444321.4446611.4448901.4451191.4453481.4455781.4458071.4460371.446267621.4464971.4467271.4469571.4471881.4474191.4476501.4478811.4481121.4483431.448575631.4488071.4490391.4492711.4495031.4497361.4499681.4502011.4504341.4506671.450900641.4511341.4513671.4516011.4518351.4520691.4523041.4525381.4527731.4530081.453243651.4534781.4537131,4539491.4541841.4544201.4546561.4548931.4551291.4553651.455602661.4558391.4560761.4563131.4565511.4567881.4570261.4572641.4575021.4577401.457979671.4582171.4584561.4586951.4589341.4591741.4594131.4596531.4598931.4601331.460373681.4606131.4608541.4610941.4613351.4615761.4618171.4620591.4623001.4625421.462784691.4630261.4632681.4635111.4637531.4639961.4642391.4644821.4647251.4649691.4652121.4654561.4657001.4659441.4661881.4664331.4666781.4669221.4671671.4674131.4676581.4679031.4681491.4683951.4686411.4688871.4691341.4693801.4696271.4698741.4701211.4703681.4706161.4708631.4711111.4713591.4716071.4718551.4721041.4723521.4726011.4728501.4730991.4733491.4735981.4738481.4740981.4743481.4745981.4748481.4750991.4753491.4756001.4758511.4761031.4763541.4766061.4768571.4771091.4773611.4776141.4778661.4781191.4783711.4786241.4788771.4791311.4793841.4796381.4798921.4801461.4804001.4806541.4809091.4811631.4814181.4816731.4819291.4821841.4824391.4826951.4829511.4832071.4834631.4837201.4839761.4842331.4844901.4847471.4850051.4852621.4855201.4857771.4860351.4862931.4865521.4868101.4870691.4873281.4875871.4878461.4881051.4883651.4886251.4888841.4891441.4894051.4896651.4899261.4901861.490447801.4907081.4909701.4912311.4914931.4917541.4920161.4922781.4925411.4928031.493066811.4933281.4935911.4938551.4941181.4943811.4946451.4949091.4951731.4954371.495701821.4959661.4962301.4964951.4967601.4970251.4972911.4975561.4978221.4980881.498354831.4986201.4988871.4991531.4994201.4996871.4999541.5002211.5004881.5007561.501024841.5012921.5015601.5018281.5020961.5023651.5026341.5029031.5031721.5034411.503711851.503980注：本表來源于OIMLR142：2008（E）全自動(dòng)折射儀：驗(yàn)證方法和手段(AMethodsandmeansofverificaJJF（浙）1207-2024表F.1蔗糖水溶液溫度修正表/℃質(zhì)量分?jǐn)?shù)/%/℃050.530.560.590.620.650.670.690.710.720.730.740.750.750.750.750.750.740.730.490.520.540.570.590.610.630.640.650.660.670.680.680.680.680.670.670.660.440.470.490.510.530.550.560.570.580.590.600.600.610.61