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4–20 mA / 0–10 V pressure sensor scaling calculator

Engineering calculators (Beta)

Scale a linear pressure sensor signal and identify readings outside its configured range.

Inputs

Choose units and enter numbers. Full-width digits and fractions such as 1/8 or 1 3/8 are accepted. Changing a unit converts the entered value.

Results

Reference calculation only. Results do not certify suitability for an actual design or its safety.

Diagram

Inputs: select a blue symbol to edit Results: red-orange values and lines

Formula and applicability

r=(I−0.004)/0.016 or r=V/10; p=pL+r(pH−pL). Values outside the range are not clamped.

Displayed values are rounded. Diagrams illustrate the calculation conditions. Initial material and fluid properties are examples; replace them with values for the actual material, temperature and conditions.

Reference
Using this information as a reference

Equations assume particular loads, supports and deformation ranges. Check inputs, units and the applicability of each equation. Diagrams explain conditions; they are not manufacturing drawings or proof of safety.

Material values are typical values or reference ranges, not certified product properties or ready-to-use design allowables. They vary with standards, product form, dimensions, temper and temperature. Check the specifications and inspection certificates for the actual product.

Displayed safety factors and checks apply only to the supplied inputs and calculation model. They do not automatically establish the safety of a complete design, including code compliance, service life, fatigue or joints. For actual design, manufacture and use, separately verify applicable regulations and standards, product specifications, and the necessary tests and engineering review.

この計算で求められること

直線出力の圧力センサー信号を換算し、設定範囲の内外を確認します。

入力・結果・適用条件を確認する

選択した形状・計算方法により、使う項目は変わります。実際の計算は上の図と入力欄で行えます。

主な入力

  • センサーの信号形式 (—)
  • 読み取った電流 I (mA / A)
  • 読み取った電圧 V (V / kV / µV)
  • 信号下限に対応する圧力 pL (MPa / kPa / bar)
  • 信号上限に対応する圧力 pH (MPa / kPa / bar)

得られる結果

  • 信号から換算した圧力 p (MPa)
  • 信号レンジ内の位置 (%)
  • 設定した圧力スパン(符号付き) (MPa)

計算式の概要

r=(I−0.004)/0.016 or r=V/10; p=pL+r(pH−pL). Values outside the range are not clamped.

指定した両端の間を直線補間します。pH<pLの逆特性も扱います。範囲外でも値を丸めず外挿し、警告を表示します。4mA未満を必ず断線と決めつけず製品の故障信号仕様を確認してください。精度、校正、温度補償、配線・電源・AD変換・NAMUR故障判定は含みません。

現在選択中の方法には、操作欄の「計算式・適用条件」を使ってください。参考計算であり、設計全体の安全性を保証するものではありません。

関連する計算

What this calculator does

Scale a linear pressure sensor signal and identify readings outside its configured range.

Inputs, outputs and applicability

The selected model determines which of these inputs and outputs apply. Use the working diagram and input panel above to calculate.

Inputs

  • Sensor signal type (—)
  • Measured current I (mA / A)
  • Measured voltage V (V / kV / µV)
  • Pressure pL at lower signal endpoint (MPa / kPa / bar)
  • Pressure pH at upper signal endpoint (MPa / kPa / bar)

Calculated results

  • Scaled pressure p (MPa)
  • Position within signal span (%)
  • Configured signed pressure span (MPa)

Formula overview

r=(I−0.004)/0.016 or r=V/10; p=pL+r(pH−pL). Values outside the range are not clamped.

Linear interpolation between configured endpoints, including reversed pressure characteristic pH<pL. Out-of-range readings are extrapolated without clamping and flagged. A reading below 4mA is not automatically diagnosed as a broken wire; check fault signalling of the actual product. Accuracy, calibration, temperature compensation, wiring, power, ADC and NAMUR fault classification are excluded.

The displayed formula and conditions in the working panel apply to the currently selected model. Reference calculation only; it does not certify a complete design.

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