---
title: "Scale Equations"
slug: "scale-equations-1"
updated: 2025-07-15T17:46:30Z
published: 2025-07-15T17:46:30Z
canonical: "docs.bazefield.com/scale-equations-1"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bazefield.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Scale Equations

## Overview

**Scale Equations** in Bazefield are lightweight, customizable formulas applied to **Raw SCADA data** to convert, normalize, or combine telemetry values. They ensure that incoming data is **accurate, meaningful, and ready for analysis** — all while preserving traceability to the original source.

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## Key Characteristics

- **Applied at Ingestion**: Scale equations are typically configured at the **Edge Buffer** or during the mapping of device points.
- **Simple Math**: Most scale equations involve unit conversions, linear transformations (e.g., `y = mx + b`), or arithmetic aggregates.
- **Preserves Raw Integrity**: Scaling is minimal and transparent, ensuring traceability to the original sensor data.
- **Long-Term Storage**: Time-series data is stored in the **Bazefield HISTORIAN database** for long-term and performant data access.

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## Common Use Cases & Examples

### ℹ️ Unit Conversion

Scale equations can convert raw sensor values into standardized engineering units.

- **Example**: Convert Fahrenheit to Celsius
- **Example**: Convert kilowatts to megawatts

### ℹ️ Multi-Point Calculations

You can combine multiple raw SCADA signals into a single, derived value.

- **Example**: Total Current from three phases
- **Example**: Average temperature across multiple sensors

### ℹ️ Inline Logic

Equations can include basic arithmetic, functions, and references to other points, enabling flexible and scalable data transformations.

![](https://cdn.document360.io/a0786c0f-b171-4b24-8860-c32eb7ef2738/Images/Documentation/image(127).png?sv=2026-02-06&spr=https&st=2026-11-06T20%3A47%3A56Z&se=2026-11-06T21%3A47%3A56Z&sr=c&sp=r&sig=p4iT8ADCNLarcnp4SboGf0t8vR9CIGGOt1EKVBHn9fo%3D)

*Example of a standardized Scale Equation configured for a Domain Point*

### Detailed Examples

| Scale Equation Capability | Example Use Case | Syntax | Example I/O |
| --- | --- | --- | --- |
| Unit Conversion | Convert Fahrenheit to Celsius | 5/9 * ($[@TempAmbient] - 32) | Input: T = 81.2 °F Calc: 5/9 × (81.2 - 32) = 5/9 × 49.2 Output: 27.3 °C |
| Convert kW to MW | $[@ActivePower] * 0.001 | Input: P = 12,113.78 kW Calc: 12,113.78 × 0.001 Output: 12.11378 MW |
| Multiple-Point Calculations | Calculate total current from phase currents | $[@CurrentA] + $[@CurrentB] + $[@CurrentC] | Input: IA = 367 A, IB = 350 A, IC = 371 A Calc: 367 + 350 + 371 Output: 1,088 A |
| Calculate average temperature sensor Reading | AVG($[@TempPanel1], $[@TempPanel2], $[@TempPanel3]) | Input: T1 = 26.3 °C, T2 = 27.2 °C, T3 = 25.9 °C Calc: (26.3 + 27.2 + 25.9) / 3 Output: 26.5 °C |

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## Where They’re Applied

- **At the Edge**: Often used during ingestion via the Bazefield Edge Buffer.
- **During Mapping**: Applied when defining Device Points to ensure values are scaled before being modeled as Domain Points.

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## Why Scale Equations Matter

✔️ **Data Accuracy**: Ensures telemetry reflects real-world units and conditions.

✔️ **Operational Consistency**: Normalizes data across different vendors and hardware.

✔️ **Efficiency**: Reduces the need for post-processing or manual corrections.

✔️ **Flexibility**: Supports both simple and complex transformations using intuitive syntax.