Recent Measurements

Introduction

The Recent Measurements Modal offers a detailed view of sensor telemetry data for a specific unit (e.g. fridge, freezer, or chiller). This modal can be accessed directly from the dashboard and is essential for reviewing historical trends, identifying anomalies, and exporting data.

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🧭 Modal Header Layout

1. Unit Name & ID

• Shown prominently at the top-left

• Reflects the storage type and label (e.g., “Standing Chiller 4-Door”)

2. Storage Context Tag

• Labelled as Cold Storage, Frozen Storage, Wine Chiller, etc.

• Helps users quickly understand the operational intent of the unit

3. Navigation Arrows

• Top-right arrows allow quick toggling between adjacent devices without closing the modal

4. Image Button

• Clicking the camera icon opens a visual reference screen

• Displays:

  • A photo of the sensor installation

  • A photo of the unit’s external appearance

• Assists with physical identification when addressing alarms or locating units

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📈 Graphical Temperature Visualization

Chart Area Features:

• Default Time Range: Last 12–24 hours

• X-axis: Time (24-hour format)

• Y-axis: Temperature (°C)

• Red line: Indicates the configured tolerance threshold (e.g., 4°C or -18°C)

• Average: The calculated average for the selected data type is displayed below the chart (e.g., avg 2.6°C)

Tabs:

• Ambient: Shows environmental readings

• Probe: Shows product-mimicking readings (via vial)

• All: Overlays both types on a shared graph for comparison

📌 Auto-update is triggered by device uplink.

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📋 Telemetry Data Table (Right Panel)

Column Breakdown:

Column	Description
Date/Time	Timestamp in local time zone (e.g., Asia/Singapore)
Probe	Product temperature (in vial of oil or water)
Ambient	Environmental temperature inside unit

• Out-of-spec values appear in red

• Temperature limits (e.g., Probe < 5°C, Ambient < 4°C) are shown above columns

🔺 Retransmission Indicators:

• Small red triangle next to a date: indicates a retransmission

  • Sensor held the data locally due to a temporary disconnect from the gateway

  • Common with send intervals every 20 minutes if real-time uplink is interrupted

🔄 Pagination & Export:

• Footer contains page navigation controls

• Download button (cloud icon): Exports displayed data into a CSV file

• Refresh button (green): Manually refreshes the modal content

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📅 Time Filter Panel

Clicking “Last 1 Day” opens a date range selector:

• Options: Last 1 Day, 7 Days, 30 Days, 3 Months

• Manual selection available via calendar interface

• Affects both the graph and data table for synchronized review

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🧠 Example Interpretation

For unit CR1-BUT-FR1 (127):

• Tolerance: -18°C

• Any values above this (e.g., -14.76°C) will show in red

• Both Probe and Ambient are tracked

• The graph shows time-aligned trends, where spikes can indicate defrost cycles, door openings, or sensor drift

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🛠 Use Cases

Scenario	Feature
Investigate a high temp alarm	View chart + table for spikes
Identify physical unit in field	Use sensor/unit photos
Validate past compliance	Export CSV data
Review missed transmissions	Look for red triangle indicators

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