From d007ee78c2c016c105994354c585b7d9a85e4a94 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Ben=C3=AD=C4=8Dek?= <jan00@benicek.xyz>
Date: Thu, 16 Nov 2023 16:45:50 +0100
Subject: [PATCH] Added calculation for PT100 and PT1000

---
 Electric/RTD/PT100.cs  | 70 ++++++++++++++++++++++++++++++++++++++++++
 Electric/RTD/PT1000.cs | 54 ++++++++++++++++++++++++++++++++
 2 files changed, 124 insertions(+)
 create mode 100644 Electric/RTD/PT100.cs
 create mode 100644 Electric/RTD/PT1000.cs

diff --git a/Electric/RTD/PT100.cs b/Electric/RTD/PT100.cs
new file mode 100644
index 0000000..109c8c7
--- /dev/null
+++ b/Electric/RTD/PT100.cs
@@ -0,0 +1,70 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Calculations.Electric.TemperatureSensorsRecalculation
+{
+    public static class PT100
+    {
+        private static readonly decimal KoeficientA = 0.0039083M;
+        private static readonly decimal KoeficientB = -0.0000005775M;
+        private static readonly decimal KoeficientC = -0.000000000004183M;
+
+
+        /// <summary>
+        /// Recalculate temperature to PT100 Resistance
+        /// </summary>
+        /// <param name="temperature">Temperature in °C</param>
+        /// <returns>Resistance</returns>
+        public static decimal TemperatureToResistance(decimal temperature)
+        {
+            if (temperature < 0)
+            {
+                return 100 * (1 + KoeficientA * temperature + KoeficientB * (decimal)Math.Pow((double)temperature, 2) + KoeficientC * (decimal)Math.Pow((double)temperature, 3) * (temperature - 100));
+            }
+            else
+            {
+                return 100 * (1 + KoeficientA * temperature + KoeficientB * (decimal)Math.Pow((double)temperature, 2));
+            }
+        }
+
+        /// <summary>
+        /// Recalculate PT100 resistance to Temperature
+        /// </summary>
+        /// <param name="resistance">Resistance PT100</param>
+        /// <returns>Temperature in °C</returns>
+        public static double ResistanceToTemperature(double resistance)
+        {
+            return (Math.Sqrt((double)KoeficientB * resistance - 100 * (double)KoeficientB + 25 * Math.Pow((double)KoeficientA, 2)) - 5 * (double)KoeficientA) / (double)(10 * KoeficientB);
+        }
+
+        /// <summary>
+        /// Recalculate PT100 resistance to Temperature
+        /// </summary>
+        /// <param name="resistance">Resistance PT100</param>
+        /// <returns>Temperature in °C</returns>
+        public static double ResistanceToTemperature(decimal resistance)
+        {
+            return ResistanceToTemperature((double)resistance);
+        }
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+    }
+}
diff --git a/Electric/RTD/PT1000.cs b/Electric/RTD/PT1000.cs
new file mode 100644
index 0000000..332680e
--- /dev/null
+++ b/Electric/RTD/PT1000.cs
@@ -0,0 +1,54 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Calculations.Electric.RTD
+{
+    public static class PT1000
+    {
+        private static readonly decimal KoeficientA = 0.0039083M;
+        private static readonly decimal KoeficientB = -0.0000005775M;
+        private static readonly decimal KoeficientC = -0.000000000004183M;
+
+
+        /// <summary>
+        /// Recalculate temperature to PT1000 Resistance
+        /// </summary>
+        /// <param name="temperature">Temperature in °C</param>
+        /// <returns>Resistance PT1000</returns>
+        public static decimal TemperatureToResistance(decimal temperature)
+        {
+            if (temperature < 0)
+            {
+                return 1000 * (1 + KoeficientA * temperature + KoeficientB * (decimal)Math.Pow((double)temperature, 2) + KoeficientC * (decimal)Math.Pow((double)temperature, 3) * (temperature - 100));
+            }
+            else
+            {
+                return 1000 * (1 + KoeficientA * temperature + KoeficientB * (decimal)Math.Pow((double)temperature, 2));
+            }
+        }
+
+        /// <summary>
+        /// Recalculate PT1000 resistance to Temperature
+        /// </summary>
+        /// <param name="resistance">Resistance PT1000</param>
+        /// <returns>Temperature in °C</returns>
+        public static double ResistanceToTemperature(double resistance)
+        {
+            return (Math.Sqrt((double)KoeficientB * (resistance / 10) - 100 * (double)KoeficientB + 25 * Math.Pow((double)KoeficientA, 2)) - 5 * (double)KoeficientA) / (double)(10 * KoeficientB);
+        }
+
+        /// <summary>
+        /// Recalculate PT1000 resistance to Temperature
+        /// </summary>
+        /// <param name="resistance">Resistance PT1000</param>
+        /// <returns>Temperature in °C</returns>
+        public static double ResistanceToTemperature(decimal resistance)
+        {
+            return ResistanceToTemperature((double)resistance);
+        }
+
+    }
+}