JJF(浙) 1207-2024 數字折射儀及含量計校準規(guī)范

CalibrationspecificationofDigitalRefractometersandDigitalContent-meters2024-03-01發(fā)布202JJF（浙）1207-2024數字折射儀及含量計校準規(guī)范CalibrationspecificationofDigitalRefractometersandDigitalContent-meteJJF（浙）1207-2024I （II） （2） （2） （2） （2） （4） （6） （6） （9） （20） （21）IIJJF1001-2011《通用計量術語及定義》、JJF1071-2010《國家計量校準規(guī)范編寫規(guī)則》和JJF1059.1-2012《測量不確定度評定與表示》共同構成支撐本規(guī)范的編寫參考JJG820-1993《手持糖量(含量)計及手持折射儀》、OIMLR124：1997（E）《測量葡萄汁糖含量折射儀（Refractometersforthemeasurementofthesugarcontentofgrapemust）》、OIMLR14(E)《全自動折射儀：驗證方法和手段(Automatedrefractometers:Methodsandmeansofverification)》等相關標數字折射儀及含量計校準規(guī)范本規(guī)范適用于折射率為（1.3～1.7）的數字折射儀OIMLR124：1997（E）測量葡萄汁糖含量折射儀（RefractometersforOIMLR142：2008（E）全自動折射儀：驗證方法和手段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）界定的及以下術語光在真空中的傳播速度與光在介質中的傳播速度之比。本規(guī)范所指的折射數字折射儀及含量計是利用折射、全反射臨含量的儀器。數字折射儀及含量計主要由光源、棱鏡、控制系統(tǒng)、顯示器等組成，部分數字折射儀及含量計還），2表1計量特性顯示單元分辨力校準項目數字折射儀數字含量計≥0.0001＜0.0001≥0.1%＜0.1%溫度示值誤差儀器示值誤差±0.0005±0.0002重復性≤0.00025≤0.0001≤0.25%≤0.05%注：以上所有指標不用于合格性判定，僅供參考。注：對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)先采用經國家計量行政部門批準的折射率溶液標準物質、蔗糖水溶液標準物質。折射率溶液標準物質測量范圍（nD）為（1.3330～1.6580），擴展不確定度U=0.0002（k=2）；蔗糖水溶液標準物質測量范圍為（0～50）%，擴展標準物質也可按照附錄D方法進行制備和定值，蔗糖水溶液的折射率值參1）V棱鏡折射儀，液體折射率測量范圍（nD）：1.30000～1.70000，最大儀器開機預熱就緒后，應先按照儀器說明書以（調節(jié)零點）。對于不具備控溫功能的儀器，儀器與注：每次測量之間應使用無水乙醇等進行清潔，再用脫脂棉或者吸濕紙擦干。在儀器測量室中加入測量所需體積的純水，將數字溫度4 T設置儀器測量室溫度為20℃,在儀器測量范圍內均勻選取不準點，從低濃度點到高濃度點的順序進行測量。在儀器測量室中加入相應的折射率標準溶液，待儀器示值穩(wěn)定后，讀取儀器的示值，每個校準點重復測量3 ΔZ=Z-Z0（2）ΔZ——數字折射儀的示值誤差； Z0——標準溶液標準值。使用自行配制的標準溶液，參照進行測量，在示值誤差測量的同時，還需記錄被測儀器顯示的溫度t，按附錄G的方法計算折射率修正值kZ，kZ——折射率在t℃時修正值；Z+kZ——儀器3次修正后的測量值的平均值。設置儀器測量室溫度為20℃,在儀器測量范圍內均勻選取不5準點，從低濃度點到高濃度點的順序進行測量。在儀器測量室中加入相應的蔗 ΔD=D-D0（4） D0——標準溶液標準值，%。參照進行測量，在示值誤差測量的同時，還需記錄被測儀器顯示的溫度t，根據溫度t查附錄E，得到糖含量修正值kD，按公式（5）計算示值kD——糖含量在t℃時修正值，%；D+kD——儀器3次修正后的測量值的平均值，%。選擇儀器量程中間點附近的標準溶液，對儀器進行xi——儀器第i次測量值； JJF（浙）1207-20246）；），g)進行校準的日期，如果與校準結果的有效性和應用有關時，應說明被校h)如果與校準結果的有效性應用有關時，應對被校樣品的抽樣程序進行說建議復校時間間隔為1年。送校單位也可根據實際使用情況自主決定復校JJF（浙）1207-20247：％校準所用主要計量標準器名稱測量范圍不確定度/準確度等級/最大允許誤差檢定/校準單位及證書號有效日期校準點(℃)項目測量值(℃)測量平均值(℃)示值誤差(℃)123標準示值儀器示值標準示值儀器示值標準示值儀器示值2、儀器示值誤差:標準值測量值無溫度控制功能填寫測量平均值示值誤差不確定度U(k=2)溫度t(℃)t℃時修正值JJF（浙）1207-20248標準值測量值無溫度控制功能填寫測量平均值（%）示值誤差不確定度U(k=2)溫度t(℃)t℃時修正值（%）校準點測量值重復性123456JJF（浙）1207-20249校準點(℃)標準示值(℃)儀器示值(℃)溫度示值誤差(℃)標準值測量平均值示值誤差不確定度U（k=2）JJF（浙）1207-2024儀器開機調整就緒后，分別滴入相應的折射率 ΔZ=Z-Z0（C.1） Z0——標準溶液標準值。 方差：u(ΔZ)=cu2(Z)+cu2(Z0) C.1.3.1輸入量Z的標準不確定度u(Z)來源于測量重復性引入的標準不確定度分量u1(Z)和儀器分辨力引入的標準不確定度分量u2(Z)；C.1.3.2輸入量Z0的標準不確定度u(Z0)來源于標準溶液定值引入的標準不確定度分量u1(Z0)和定值溫度影響引入的標準不確定度分量u2(Z0)。 C.1.4.1輸入量Z標準不確定度u(Z)評定 C.測量重復性引入的標準不確定度分量u1(Z)1.34813、1.34812、1.34813、1.34815、1.34813、1.34816、1.34814、JJF（浙）1207-2024實際測量時，取3次測量的算術平均值作為測量結果，n=3，則標準不確 C.儀器分辨力引入的標準不確定度分量u2(Z)由于重復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標準不確定度u(Z0)評定C.標準溶液定值引入的標準不確定度分量u1(Z0)標準溶液采用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=則標準不確定度為：C.定值溫度影響引入的標準不確定度分量u2(Z0)折射儀定值要求溫度控制在（20±0.3表以及蔗糖質量分數折射率對照表等相關資料，估得其半寬度a≈0.000031，服從均勻分布，取k=則標準不確定度為：JJF（浙）1207-2024C.標準不確定度u(Z0)的計算標準不確定度u(xi)不確定度來源標準不確定度靈敏系數c(xi)lc測量重復性0.00000710.000007u(Z0)標準溶液0.000034-10.000034U=k×uc(ΔZ)=0.00007JJF（浙）1207-2024儀器開機調整就緒后，分別滴入相應的糖含量 D0——標準溶液標準值，%。C.2.3.1輸入量D的標準不確定度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實際測量時，取3次測量的算術平均值作為測量結果，n=3，則標準不確 數字含量計的分辨力為：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 標準溶液采用V棱鏡折射儀定值，V棱鏡折射儀允許誤差為±0.00005，根據蔗糖質量分數折射率對照表，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表以及蔗糖質量分數折射率對照表等相關資料，估得其半寬度a≈0.021%，服從均勻分布，取k=則標準不確定度：JJF（浙）1207-2024標準不確定度u(xi)不確定度來源標準不確定度靈敏系數c(xi)lc測量重復性0.0096%10.0096%標準溶液0.022%-10.022%JJF（浙）1207-2024配制標準溶液選取蔗糖（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。根據需要配制的糖液含量，用電子天平分別稱取糖的質量Ws及水的質量Wa。用電子天平稱空瓶質量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）全自動折射儀：驗證方法和手段(AMethodsandmeansofverificaJJF（浙）1207-2024表F.1蔗糖水溶液溫度修正表/℃質量分數/%/℃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