校准和精度认证

在精细丈量仪器和计量中,关于用户来说精度和牢靠性是很紧张的两个方面。在仪器读数禁绝确后作出的决议将会招致不测结果。 Digi-Pas®精细数字j9平台和倾角仪接纳公司专有的先辈校准和制造工艺,针对大范畴事情温度下的非线性举行校准。为了进步通明度,确保公平性和才能,Digi-Pas®产品的准确功能曾经颠末浩繁天下抢先认证机构的内部验证,这些认证机构采取运用了可追溯至NIST,JIS,UKAS和DIN尺度的超高精度的纳米技能车床和角度干预仪。

Digi-Pas®产品尺度性评价的校准证书来自独立承认的第三方和天下抢先的国际计量实行室()。 Digi-Pas®产品的精度功能按规格举行测试,并由美国,日本,英国,德国和中国及格评定国度承认委员会的承认校准和测试实行室活期重复验证,可在国际实行室承认互助构造()下,追溯至NIST,JIS,UKAS, DIN和中国CNAS。美国实行室认证协会(),包管了在全天下范畴内的承受度及格评定。

j9平台工场的消费设置装备摆设和角度测试仪器会活期失掉j9平台研讨实行室精细角度丈量设置装备摆设的校准,然后在美国,日本,德国,英国和中国及格评定国度承认委员会承受举行内部第三方独立认证的横向再次认证(见上面的校准证书样本)与DATA)。每批消费测试数据(包罗校准文件)均依照ISO9001步伐举行维护,并由相干方和政府依据要求提供。只要那些高精度型号都需带有硬拷贝的工场QA校准证书和数据。

假如客户盼望购置某个产品,并附带硬拷贝的第三方校准证书以及任何产品型号的DATA,请联系j9平台的贩卖支持团队以获取报价。一些精细型号可用于Amazon.com USA的第三方校准证书和DATA。

以下校准证书样本为用户提供了在您地点地域左近选择及格的第三方校准办事提供商的选项。这些办事提供商拥有专业的精细角度测试设置装备摆设和专业知识,可以切合ISO/IEC 17025:2005 尺度,以测试j9平台产品的共同功效,分外是(i)2轴同时角度丈量,(ii)及其普遍的丈量范畴,(iii)超高的精度。 Digi-Pas®仪器的质量系统确保消费的产品切合规格。经过填写“联系j9平台”表格,可以讨取最新工场的校准证书和/或内部校准证书。

校准证书

 点击PDF图标下载
阐明 国别
中国 美国 英国 日本 新加坡 德国
DWL80书 DWL-80E Calibration Certificate DWL-80E Calibration Certificate
DWL80Pro版证书
DWL130版证书
DWL200版证书 DWL-200 Calibration Certificate
DWL280版证书
DWL280Pro版证书
DWL600版证书
DWL680Pro版证书
DWL1000XY版证书
DWL1300XY版证书
DWL1500XY版证书
SIMT Simco Transcat Micron JQA NMC Trescal
DWL2000XY版证书
SIMT Simco Transcat Micron JQA NMC Trescal
DWL3000XY版证书
SIMT Boeing Transcat Micron JQA NMC Trescal
DWL3500XY版证书
SIMT A.A Jansson JQA NMC Trescal
DWL5000XY版证书
SIMT Boeing Transcat Micron JQA NMC Trescal
DWL8500XY版证书
SIMT A.A Jansson JQA NMC Trescal

Digi-Pas®校准证书和及格声明证书 :

 点击PDF图标下载
形貌 模子
DWL 2000XY DWL 3000XY DWL 3500XY
Digi-Pas® 校准证书
Digi-Pas® 及格声明书

Digi-Pas® 双轴精细数码倾角仪相比于惯例单轴程度丈量仪器的上风是:

传统气泡j9平台、钟摆式数码j9平台和倾角仪的范围性在于:1)单轴, 2)丈量角度范畴小, 3)仪器尺寸大。而准确程度及角度丈量、校准和外表立体度剖析等都是二维立体操纵,仅靠两条独立的垂直线举行丈量是不敷的。Digi-Pas双轴精细数码倾角仪接纳先辈的MEMS技能,使其具有了同步双轴丈量和普遍的角度丈量范畴才能。这是传统单轴数字/气泡j9平台所不具有的。

Digi-Pas® 2-Axis Machinist Digital Level on 2D (X-Y plane) of a 2-axis Sine Table
Digi-Pas机器师公用双轴数码j9平台在双轴正弦台上的二维立体(X-Y立体)
  • 高效省时--- 经过双轴MEMS技能,在二维(X-Y)立体举行的找温和角度丈量操纵(俯仰和转动)可同时举行,彻底握别了利用传统单轴j9平台校准精细呆板时必需履历的有趣的重复试错历程。那种反复而单调的调解操纵耗时费力的并且低服从,技能职员很容易丢失事情热情。别的,一套Digi-Pas双轴数码j9平台就能替换2套单轴数码j9平台完成相反义务,从而可以浪费本钱。

  • 可信牢靠--- Digi-Pas®双轴MEMS技能的倾角仪已经过专有先辈制造工艺专利技能,对非线性和事情温度变革举行了赔偿和校准。其在宽丈量范畴内的测角正确度和波动功能取得了诸如NIST、UKAS、DIN和JIS品级三方独立认证机构的验证承认。由于具有双轴操纵、大角度丈量范畴及测振仪功效等上风, ®倾角仪绝不但仅是程度丈量东西,它为立体角度平整、丈量、诊断和校准提供了一个片面的办理方案。

    angular linearity
    angular deviaton vs. temperature
    Digi-Pas®双轴机器式数码j9平台具有赔偿和校准功效。
  • 严谨高质--- 它具有表现数值和图形数据的数显牛眼及内置测振仪。呆板安置职员可及时监控和引导校准操纵,并能经过看待校准呆板安置前后的形态举行比力,确认其地位变革波动度。别的,双轴智能牛眼制止了传统气泡j9平台依赖人眼察看和履历值所发生的偏差。

  • 高效省时---可经过无线或USB与电脑或挪动设置装备摆设毗连,完成“单人操纵”。

    One-man-operation can be performed when levelling machine using Digi-Pas® 2-Axis precision Digital Level via wireless Bluetooth connectivity
    Digi-Pas ® 双轴精细数码j9平台在经过无线蓝牙毗连时,程度丈量事情只需“单人操纵”便可完成。

利用Digi-Pas®双轴倾角仪意味着呆板安置将愈加省时,调养维修将愈加高效,操纵将愈加专业,大限制地进步精细机器功能,为用户提拔产品格量(如精度和产量)和更高的得意度。

Digi-Pas® 双轴数码倾角仪为精细程度和角度丈量提供了一个片面办理方案,是替换过期的气泡j9平台和角度丈量范畴有限的传统单轴数码j9平台的最好选择。


©2022 DIGIPAS TECHNOLOGIES INC. All Rights Reserved

Digi-Pas® 精细数字水准仪和测斜仪的正确性和牢靠性

Three-Point Contact Base of Digi-Pas® 2-axis Precision Inclinometer

  1. Limitations of conventional rectangular contact base levelling instrument

    The contact base surface finish quality of a typical conventional leveling instrument or inclinometer is one of the critical determinants of accuracy performance and common rectangular-shape flat surface often suffer from geometrical deviation resulting from:

    • Waviness and unevenness

    • Irregularities due to distorted or worn surface

    • Dust and dirt trapped or surface roughness

    Figure 1 illustrates three typical poor surface finishes of conventional rectangular surface four-point contact base. The unstable surface-to-surface contact causes 'rocking' which results in measurement inaccuracy derived from inconsistent readings. A common practice to improve the outcome under such constraint is by taking more samples to obtain an averaged reading. However, this time-consuming and repetitive activity often promotes boredom that succumb engineers to resort for compromising works, especially when the instrument is located at some distance.

    Figure 1 Poor surface finishes of typical levelling instrument contact base and implications
    Figure 1: Poor surface finishes of typical levelling instrument contact base and implications

    Although high quality surface requires both flatness and smoothness, it is difficult and expensive to control in machining of metal alloy surface particularly when involving relatively large area. Increasing the flatness and smoothness of a few microns would usually increase exponentially on its manufacturing costs. This often results in a trade-off between the manufacturing costs of the instrument and thus compromises its accuracy performance.

    In addition, the rectangular contact base surface of a conventional leveling instrument is also susceptible to target measuring surface unevenness, which is another factor affecting levelling and measurement accuracy. Figure 2 illustrates issues associated when a rectangular contact base of a traditional single-axis spirit level is placed on a typical machined surface having low frequency, long wavelength flatness variation. It is clearly shown that full and stable surface-to-surface contact could not be achieved between the instrument base and the measuring surface. The contact may cause rocking that results in measurement errors, hence affects the accuracy and reliability of the leveling outcome. E.g. a 3µm of surface unevenness along the length of a typical 20µm/m resolution spirit machinist level of 130mm would result in 0.001° error

    Figure 2: Conventional single-axis contact base on a two-dimensional uneven plane
    Figure 2: Conventional single-axis contact base on a two-dimensional uneven plane
  2. Digi-Pas® concave contact base versus 'perfectly flat' contact base structures

    Often, dents are easily generated on smooth metal base area of an instrument resulting from rough handling. A protruding dent formed at any location near the middle of a 'perfectly flat' metal base simply causes rocking which results in measurement error or inaccuracy. To minimize these errors, Digi-Pas® instrument metal surface base has been deliberately designed and machined to form a concave 4-points contact base specifically target to prevent rocking caused by small protruding dents or foreign particles formed at the center of device’s base. Figure 3 illustrates the inferiority of a 'perfectly flat' base of conventional instruments against the improved design of Digi-Pas® concaved 4-point base when small dents/particles exist at the center of device’s base. It is obvious that small dents or particles exist near the middle of the base shall not affect stability of Digi-Pas® instrument as it is supported by both ends having precisely machined stable contacts to the targeted measurement surface.

    Figure 3. Side view of perfectly flat contact base versus Digi-Pas® concave 4-point base
    Figure 3. Side view of perfectly flat contact base versus Digi-Pas® concave 4-point base

    On the other hand, dents formed at the both ends of the instrument may not necessarily cause significant rocking. When dents happen at these both ends, an offset value/reading caused by these dents can be easily removed using Digi-Pas® calibration or Absolute Level feature (see "Accuracy Performance"). In contrast, a protruding dent formed at the middle of the device’s base destabilizes the device with severe rocking during measurement which cannot be resolved by using calibration or Absolute Level feature. This phenomenon does not only affect the instrument's initial offset value, it also affects the repeatability of measurement reading.

    Thus, the contact surface approaching the base center of instrument is deliberately being designed with a concave profile to minimize the above issue, providing improved stability of measurement readings as well as enhances accuracy of the instrument.

  3. Pioneering the application of 3-point contact base in 2-axis precision levelling instrument

    In view of the constraints inherent in conventional contact base measuring instrument described in the foregoing, Digi-Pas® pioneered and patented the utility of 3-point contact base for its 2-axis precision angular and surface flatness measurement instruments. The triangular shape of 3-point contact base seeks to address the shortcomings associated with conventional rectangular contact base.

    Figure 4: Stable 3-point-to-surface contact between Digi-Pas® inclinometer and flat surface object
    Figure 4: Stable 3-point-to-surface contact between Digi-Pas® inclinometer and flat surface object
    Figure 5: Stable 3-point-to-surface contact between inclinometer and uneven surface
    Figure 5: Stable 3-point-to-surface contact between inclinometer and uneven surface

    When a 3-point contact base leveling instrument is placed on either flat or uneven surface object (e.g. typically machined metal surface) as shown in figure 4 and 5 respectively, the three-point frame serves as a triangle-plane platform for supporting the weight and maintaining the stability of the instrument. It provides maximum stability and strength against downward forces and horizontal forces as well as movements about horizontal axes. With the sturdy three-point stand, a most stable 3-point-to-surface contact can be established without rocking and thus achieving consistent leveling readings of the two-dimensional measuring surface. Any angular deviations on the surface area is detected by Digi-Pas® 2-axis inclinometer as sensitive contact points touch on a particular section of uneven surface area.

  4. Advantages of Digi-Pas® 3-point contact base levelling instrument

    In 2009, Digi-Pas® pioneered and patented the utility of 3-points contact base to its world-first 2-axis precision digital level series that effectively prevent any surface dimensional deviation caused by unevenness of its own instrument’s metal surface contact base. Figure 6 illustrates the 3-point contact base screws made of harden steel and titanium materials that offers great stability and prevent it from ‘rocking’ when placed on either flat or uneven smooth surface for 2D levelling and planar angular measurement.

    Figure 6: Digi-Pas<sup>®</sup> patented 2-Axis Precision inclinometer utilizing 3-Point Contact Base
    Figure 6: Digi-Pas® patented 2-Axis Precision inclinometer utilizing 3-Point Contact Base

    Maintaining the 3-points contact is easy, speedy and cost effective simply by replacing the harden/titanium screws whenever they wear off, saving significant amount of time and cost as compared to maintain the instrument’s contact base surface finish through standard machining. Device accuracy performance can also be re-calibrated by performing User Self-Calibration or "Absolute Level" setting at ease. Please refer to user manual for detail instructions.

    For using Digi-Pas® 2-axis inclinometer to level an object having a very rough top surface, the 3-point harden/titanium screws can be temporarily removed and use the flat base surface to naturally average the rough surface. Absolute Level Setting is required to be performed immediately after changing the base to ensure the instrument maintains its reference accuracy. However, in high precision leveling, angular measurement and surface profiling tasks usually involve high quality flatness and smooth surfaces such as granite and metal alloy machined surfaces. Hence, 3-point contact base is still a better choice.

©2022 DIGIPAS TECHNOLOGIES INC. All Rights Reserved