The pALERT F330 is a tri-axial force-balance accelerograph for on-site and regional earthquake early warning, structural health monitoring and industrial seismic protection. It combines Pd, PGA and STA/LTA triggers, 24-bit recording at up to 1,000 samples per second, more than 130 dB dynamic range, Modbus TCP, MQTT and LINE alerts and three digital outputs in an IP67 enclosure with battery backup. QuakeLogic supplies the F330 with configuration support, integration guidance and worldwide shipping.
The pALERT F330 is a tri-axial force-balance accelerograph that combines a low-noise strong-motion sensor, a 24-bit four-channel recorder and on-board earthquake early warning logic in one IP67 unit. It detects the first P-wave arrivals, estimates how destructive the following S-wave will be, and issues alerts and digital-output commands seconds before strong shaking reaches the site. At the same time it records the event, calculates seismic intensity on international scales, and streams waveform data to servers, Modbus TCP hosts and messaging services.
QuakeLogic supplies the pALERT F330 to seismic network operators, facility and plant engineers, structural health monitoring teams, building owners and public-safety agencies that need a dependable accelerograph for on-site or regional earthquake early warning, structural response monitoring and automatic protective action.
The F330 is the front-end sensor of QuakeLogic’s earthquake early warning portfolio. Pair it with the CUBE Earthquake Early Warning Command Center for an on-site touchscreen display and alarm hub, with the PX01 Earthquake Central Datalogger and Control Unit for rack-mounted plant-wide disaster prevention, or with SHAKE SS300 Smart Seismic Switch relays for distributed shutdown points. For cost-sensitive MEMS deployments, see the pALERT S303 Tri-axial MEMS Accelerograph and the pALERT Q332 Tri-axial Quartz MEMS Accelerograph.
QuakeLogic is a US-based engineering company that combines instrumentation, software, integration and engineering support into complete seismic monitoring and earthquake early warning solutions. We configure every pALERT F330 against its datasheet and your site requirements, help you plan thresholds and protective outputs, support Modbus, MQTT and software integration, and ship worldwide. Request a quote or a demo below.
| Weight | 10 lbs |
|---|---|
| Dimensions | 12 × 12 × 12 in |
| Specification | Value |
|---|---|
| Sensor | Tri-axial force-balance accelerometer |
| Measurement range | ±0.5 g, ±1 g, ±2 g, ±4 g (selectable) |
| Dynamic range | >130 dB |
| Frequency range | DC – 200 Hz |
| Nonlinearity | 0.03% |
| Resolution | 4 channels with 24-bit resolution |
| Cross-axis interference | ≤ ±0.1% |
| Output sampling rate | 50, 100, 200, 500 or 1,000 samples per second |
| Trigger logic | Pd (P-wave displacement), PGA, STA/LTA; high-pass and low-pass filtering |
| Seismic intensity scales | CWB 2020 (Taiwan), GB/T 17742-2008 (China), MMI, JMA, KMA |
| Seismic event record time | Configurable up to 200 s |
| Recording modes | Event-triggered, continuous or scheduled; miniSEED format |
| Storage capacity | 32 GB (expandable to 64 GB) |
| Display | LCD screen with 2 × 20 characters and function button |
| Communication | RJ-45 10/100 Mbps Ethernet; Modbus TCP (up to 10 hosts); TCP server/client streaming; MQTT and LINE alerts; miniSEED server (firmware 4.56+); NB-IoT wireless |
| Digital outputs | 3 × TTL DO, 0.1 A maximum each (12 VDC internal or up to 30 VDC external supply) |
| Timing | NTP server or client; optional GPS module |
| Power | 10 – 30 VDC input, 1 A minimum; internal battery for about 3 hours of operation |
| Enclosure | IP67, waterproof quick connectors with anti-misinsertion lock |
| Dimensions (W × L × H) | 206 × 179 × 120 mm |
| Weight | 4.37 kg |
Source: Sanlien pALERT F330 datasheet and pALERT F330 User Manual V1 (SL-UM-012). All prices, features and specifications are subject to change without prior notice; confirm the final configuration with QuakeLogic.
Contact QuakeLogic for drawings, firmware notes, Modbus register maps or configuration-specific documentation.
Power the F330 from 10 to 30 VDC (1 A minimum) and connect it over Ethernet. It serves Modbus TCP to up to ten hosts (PLC, HMI, SCADA, building management), streams waveform data to TCP clients and miniSEED consumers, publishes MQTT alerts and sends LINE notifications. Its three digital outputs and remote Modbus TCP digital-output control drive interposing relays, sirens, gas valves and elevator controllers.
Software: built-in web GUI, Palert Early Warning System application, SanDAS. Confirm final wiring, protocol and software requirements with QuakeLogic.
The pALERT F330 is a tri-axial force-balance accelerograph with a built-in 24-bit recorder for earthquake early warning and structural health monitoring. It measures ground or structural acceleration on three axes, runs Pd, PGA and STA/LTA trigger logic on board, calculates seismic intensity, records events, and sends alerts and data over Ethernet to control systems, servers and messaging services.
The F330 uses Pd (P-wave displacement) early warning technology. When the displacement of the faster, weaker P-wave exceeds a threshold within 3 seconds, the instrument estimates the destructiveness of the following S-wave and issues an alert before the damaging S-wave arrives. PGA and STA/LTA triggers are available alongside Pd, and high-pass and low-pass filters reduce non-seismic noise.
Yes. The F330 has three TTL digital outputs (0.1 A maximum each, driven from the internal 12 VDC supply or an external supply up to 30 VDC) for relays, sirens, gas valves, elevators and production lines. It can also switch digital outputs on remote Modbus TCP devices, publish alerts through MQTT, and send LINE group notifications.
The F330 has a 10/100 Mbps Ethernet port and acts as a Modbus TCP server for up to ten simultaneous hosts, with TCP server, TCP client and administration-server modes for streaming data in 16-bit or 24-bit packet formats. Warning information can be uploaded to three servers. It records in miniSEED and, from firmware 4.56, can serve miniSEED streams. Alerts go out via MQTT and LINE. Configuration and waveform viewing use the built-in web GUI, the Palert Early Warning System application or SanDAS software. NB-IoT wireless connectivity is listed by the manufacturer; confirm the configuration with QuakeLogic.
The F330 accepts 10 to 30 VDC (1 A minimum supply) through a waterproof quick connector and keeps running for about three hours on its internal battery if external power fails. The IP67 enclosure mounts with horizontal adjustment screws for leveling and weighs 4.37 kg. Timing comes from NTP (server or client mode) or an optional GPS module. Installation on a floor slab, column base, machine foundation or cabinet wall is typical, and QuakeLogic provides configuration guidance for thresholds, outputs and network settings.
Yes. QuakeLogic ships the pALERT F330 worldwide from the United States. Every order includes datasheet-verified configuration guidance, threshold and output planning, Modbus, MQTT and software integration support, and access to the user manual. Optional items include the CUBE command center, the PX01 central datalogger, SHAKE SS300 seismic switches and additional pALERT sensors for networked early warning. Contact sa***@********ic.net for a quotation that includes shipping and delivery time.
Contact QuakeLogic for documented warranty terms, configuration review, threshold planning, wiring and integration guidance, and commissioning support. QuakeLogic ships the pALERT F330 worldwide from the United States.
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