55 lines
2.0 KiB
C#
55 lines
2.0 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace Calculations.Electric.RTD
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{
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public static class PT1000
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{
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private static readonly decimal KoeficientA = 0.0039083M;
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private static readonly decimal KoeficientB = -0.0000005775M;
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private static readonly decimal KoeficientC = -0.000000000004183M;
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/// <summary>
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/// Recalculate temperature to PT1000 Resistance
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/// </summary>
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/// <param name="temperature">Temperature in °C</param>
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/// <returns>Resistance PT1000</returns>
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public static decimal TemperatureToResistance(decimal temperature)
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{
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if (temperature < 0)
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{
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return 1000 * (1 + KoeficientA * temperature + KoeficientB * (decimal)Math.Pow((double)temperature, 2) + KoeficientC * (decimal)Math.Pow((double)temperature, 3) * (temperature - 100));
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}
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else
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{
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return 1000 * (1 + KoeficientA * temperature + KoeficientB * (decimal)Math.Pow((double)temperature, 2));
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}
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}
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/// <summary>
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/// Recalculate PT1000 resistance to Temperature
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/// </summary>
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/// <param name="resistance">Resistance PT1000</param>
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/// <returns>Temperature in °C</returns>
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public static double ResistanceToTemperature(double resistance)
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{
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return (Math.Sqrt((double)KoeficientB * (resistance / 10) - 100 * (double)KoeficientB + 25 * Math.Pow((double)KoeficientA, 2)) - 5 * (double)KoeficientA) / (double)(10 * KoeficientB);
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}
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/// <summary>
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/// Recalculate PT1000 resistance to Temperature
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/// </summary>
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/// <param name="resistance">Resistance PT1000</param>
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/// <returns>Temperature in °C</returns>
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public static double ResistanceToTemperature(decimal resistance)
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{
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return ResistanceToTemperature((double)resistance);
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}
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}
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}
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