@strato-automation/node-red-contrib-strato-automation/unit-converter-node/unit-converter.html

Strato Automation Official Node Red Library

<script type="text/javascript">
    RED.nodes.registerType('unit-converter', {
        category: 'Strato Automation',
        color: '#f3b567',
        defaults: {
            name: { value: "", label: "name" },
            option: { value: "cToF", required: true, label: "option" },
        },
        inputs: 1,
        outputs: 1,
        icon: "font-awesome/fa-retweet",
        paletteLabel: function() {
            return "Unit Converter";
        },
        label: function () {
            return (this.option || "Unit Converter")
        },
        labelStyle: function () {
            return this.name ? "node_label_italic" : "";
        },
        outputLabels: function (index) {
            return this.topic;
        },
        inputLabels: function (index) {
            return "Input";
        },
        oneditprepare: function () {
            var node = this;
            $("#node-input-option").typedInput({
                types: [
                    {
                        value: "",
                        options: conversionOptions()
                    }
                ]
            })
        }
    });
</script>

<script type="text/html" data-template-name="unit-converter">
    <!-- Basic Settings -->
    <div class="form-tips" style="margin-bottom: 20px;">
        <b>Basic Settings</b>
    </div>
    <div class="form-row">
        <label for="node-input-name"><i class="fa fa-bookmark"></i> Name</label>
        <input type="text" id="node-input-name" placeholder="Optional name for this converter">
    </div>
    <div class="form-row">
        <label for="node-input-option"><i class="fa fa-exchange"></i> Conversion</label>
        <input type="text" id="node-input-option">
    </div>

    <div class="form-tips" style="margin-top: 20px;">
        <p><i class="fa fa-info-circle"></i> Tip: The node will automatically format output values to 2 decimal places.</p>
    </div>
</script>

<script type="text/html" data-help-name="unit-converter">
    <p>A node that converts values between different units of measurement.</p>

    <h3>Inputs</h3>
    <dl class="message-properties">
        <dt>payload <span class="property-type">number</span></dt>
        <dd>The value to convert</dd>
    </dl>

    <h3>Outputs</h3>
    <dl class="message-properties">
        <dt>payload <span class="property-type">number</span></dt>
        <dd>The converted value</dd>
    </dl>

    <h3>Configuration</h3>
    <dl class="message-properties">
        <dt>Name <span class="property-type">string</span></dt>
        <dd>Optional name to identify the node in the flow</dd>
        
        <dt>Conversion <span class="property-type">string</span></dt>
        <dd>
            Available conversion options:
            <h4>Temperature</h4>
            <ul>
                <li><code>cToF</code> - Celsius to Fahrenheit</li>
                <li><code>fToC</code> - Fahrenheit to Celsius</li>
            </ul>
            
            <h4>Pressure</h4>
            <ul>
                <li><code>psiToInHg</code> - PSI to inches of Mercury</li>
                <li><code>inHgToPsi</code> - Inches of Mercury to PSI</li>
                <li><code>psiToKPa</code> - PSI to Kilopascals</li>
                <li><code>kPaToPsi</code> - Kilopascals to PSI</li>
            </ul>
            
            <h4>Energy</h4>
            <ul>
                <li><code>btulbToKjkg</code> - BTU/lb to kJ/kg</li>
                <li><code>kjkgToBtulb</code> - kJ/kg to BTU/lb</li>
            </ul>
        </dd>
    </dl>

    <h3>Conversion Formulas</h3>
    <ul>
        <li>°F = °C × (9/5) + 32</li>
        <li>°C = (°F - 32) × (5/9)</li>
        <li>inHg = PSI ÷ 0.491154</li>
        <li>PSI = inHg × 0.491154</li>
        <li>kPa = PSI × 6.894757</li>
        <li>BTU/lb = kJ/kg ÷ 2.326</li>
    </ul>

    <h3>Status</h3>
    <dl class="message-properties">
        <dt>Grey dot</dt>
        <dd>Shows the input and output values (to 2 decimal places)</dd>
    </dl>

    <h3>Example Uses</h3>
    <ul>
        <li>Converting temperature readings between Celsius and Fahrenheit</li>
        <li>Standardizing pressure measurements across different systems</li>
        <li>Converting energy units for HVAC calculations</li>
        <li>Adapting sensor readings to different unit requirements</li>
    </ul>

    <h3>Details</h3>
    <p>This node performs precise unit conversions using standard conversion factors. All calculations maintain accuracy to multiple decimal places, though the status display rounds to 2 decimal places for readability.</p>

    <p>The node preserves all other message properties, only modifying the <code>payload</code> value. Each conversion is performed using carefully selected conversion factors to ensure accuracy in technical applications.</p>
</script>