---
type: Parquet
title: dim_asset
description: Monitored asset metadata including meter type, communication protocol, and stream dates
resource: ./dim/dim_asset.parquet
tags: [dimension, asset, metadata]
timestamp: 2025-01-01T00:00:00Z/2025-12-31T23:59:00Z
---

# dim_asset

One row per monitored asset. Source: `AssetList.csv`.

| Column | Type | Description |
|--------|------|-------------|
| `asset_id` | VARCHAR | PK. Anonymised asset identifier (e.g. `ahu_a`, `p_b`, `mi_a`) |
| `asset_type` | VARCHAR | Asset classification (e.g. `HVAC_AHU`, `Press_Main`, `Electrical_GridImport`) |
| `em_manufacturer` | VARCHAR | Energy meter manufacturer (`Weidmuller`, `Rayleigh`) |
| `em_model` | VARCHAR | Meter model (`EM220`, `RI-F200`, `RI-F400`) |
| `em_communication_protocol` | VARCHAR | Communication protocol (`modbus_tcp_ip`, `modbus_rtu`) |
| `em_acquisition_pathway` | VARCHAR | SCADA acquisition route (`direct_modbus_tcp`, `gateway_modbus_tcp_to_plc`, `gateway_modbus_rtu_to_plc`) |
| `stream_start_utc` | TIMESTAMP | First observation timestamp for this asset |
| `stream_end_utc` | TIMESTAMP | Last observation timestamp for this asset |
| `is_submeter` | BOOLEAN | `TRUE` for downstream consumer/distribution meters; `FALSE` for supply-level meters (`mi_a`, `mi_b`) |

**Row count:** 43 assets

**Asset type distribution:**

| Asset Type | Count |
|------------|-------|
| Press_Main | 9 |
| Utilities | 5 |
| ProcessMixing | 4 |
| Press_Drive | 4 |
| HVAC_AHU | 3 |
| Electrical_Distribution | 3 |
| Automation_Robot | 3 |
| CompressedAir | 2 |
| HVAC_AirExtraction | 2 |
| HVAC_HeatPump | 2 |
| Press_Heating | 2 |
| Automation_Handling | 1 |
| Electrical_GridImport | 1 |
| Electrical_PVGeneration | 1 |
| Press_IntegratedAutomationCell | 1 |