Earthquake Vibration Detector Model-2702 ｜ 3-Axis Seismic Sensor with 4–20mA & IP65 Protection

Showa Sokki Model-2702 – 3-axis seismic vibration detector with 4–20mA output, peak-hold mode, and IP65 housing.
🔷 Model-2702 – High-Precision Earthquake Vibration Detector
The Model-2702 from Showa Sokki is a 3-axis seismic vibration detector designed to detect earthquake activity with high precision. It synthesizes acceleration in the XYZ axes into a single vector and outputs the signal as a DC 4–20mA current, making it easy to integrate with industrial monitoring and safety systems.
With a measurement range of 0–400 gal, it is capable of detecting both minor seismic activity and deep-seated vibrations. In addition to real-time output, it also supports a Peak-Hold mode (1–10 seconds) for event-based monitoring.
The unit is housed in a durable IP65-rated aluminum die-cast enclosure, weighing approximately 1 kg, making it suitable for long-term, reliable installation in industrial facilities and infrastructure systems.
🔷 Key Features
‐ Synthesizes 3-axis acceleration (XYZ) into one output
‐ Standard DC 4–20mA output (0–400 gal) for easy system integration
‐ Switchable modes: Real-time output / Peak-hold (1–10 sec)
‐ Rugged IP65 aluminum die-cast housing for outdoor and industrial use
‐ Fully compatible with the Model-2590C Digital Monitor
🔷 Use Cases
‐ Automatic shutdown of production lines during earthquakes
‐ Triggering evacuation procedures in case of seismic activity
‐ Emergency shutdown of critical utilities such as gas and water pipelines
‐ Constructing low-cost, high-reliability earthquake monitoring systems
🔷 Main Specifications
‐ Sensor Type: 3-axis accelerometer (300mV / (9.8m/s²))
‐ Measurement Range: 0–400 gal
‐ Frequency Range: 0.25–2 Hz
‐ Filters: HPF 0.25Hz / LPF 2Hz (±3dB±0.5dB), -6dB/OCT
‐ Output Modes: Real-time / Peak-hold (1–10 sec configurable)
‐ Output: DC 4–20mA (0–400 gal)
‐ Power Supply: DC 24V, ≤1A
‐ Operating Environment: 0°C–70°C, 45–85% RH (non-condensing)
‐ Construction: Aluminum die-cast, IP65-rated
‐ Weight: Approx. 1 kg
‐ Cable: 5m direct cable (optional lengths available, terminated)
🔷 Distribution & Support
Showa Sokki supplies and delivers the Model-2702 Seismic Detector across Thailand, covering major industrial estates in Chonburi, Rayong, Ayutthaya, Pathum Thani, and Bangkok.
🔷 For detailed specifications, please download the product PDF or contact us directly.
Download : https://prime.nc-net.com/105994/en/catalog/detail/7542
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