{"product_id":"eqr-90-strong-motion-accelerograph","title":"EQR-90: Professional Grade Strong Motion Accelerograph","description":"\u003ch2\u003eEQR-90: Engineered for Defensible Data. Simply Deployed. Easily Scaled.\u003c\/h2\u003e\n\u003cp\u003eProfessional-grade seismic data in one instrument. Fast to install and scale from a single point to a citywide network.\u003c\/p\u003e\n\u003ch3\u003eSummary\u003c\/h3\u003e\n\u003cp\u003eThe EQR-90 is a second generation complete accelerograph in one box, built on 20 years of MEMS development.\u003c\/p\u003e\n\u003cp\u003eCanterbury Seismic has built MEMS accelerographs from the start, and two decades of that refinement now sit in a single compact instrument: precision MEMS sensor, 24-bit digitiser, recorder, precision timing and a built-in web server.\u003c\/p\u003e\n\u003cp\u003eEngineered for purpose and tuned to the band that matters, it delivers credible data, whether you are instrumenting a single point, a whole structure or an entire network.\u003c\/p\u003e\n\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eEvery EQR-90 delivers credible, defensible data to ANSS Class C, with sub-microsecond GNSS and PTP timing. It is the standard that holds up when the data is actually needed, in an insurance claim, a post-event review, or a consent process.\u003c\/p\u003e\n\u003cp\u003eAny EQR-90 in an array can act as the PTP timing master. Equip a single unit with GNSS wherever sky visibility allows, and every other unit, regardless of location, receives sub-microsecond timing over PTP. No antenna required at every sensor, and no placement constraint for instruments deep inside a structure.\u003c\/p\u003e\n\u003cp\u003eConnect two or more instruments to an EQResponder Central Recorder (EQR-C), and they record to one synchronised dataset on a single clock, through the instrument's own web interface, with no proprietary software to license. Even two sensors become one coordinated record, not two files to reconcile, and the same setup scales to a full array when you need it.\u003c\/p\u003e\n\u003ch3\u003eBetter together: EQR-90 and \u003ca href=\"\/pages\/sentinel\"\u003eSentinel\u003c\/a\u003e\n\u003c\/h3\u003e\n\u003cp\u003eFrom measurement to decision. An EQR-90 tells you exactly what your building experienced in an earthquake. Credible, defensible data, not an estimate from distance and magnitude. Sentinel does more than relay the number. It compares your building's measured response against its structural design limits and code thresholds, and turns the result into the decision you actually need: a clear white, amber or red status within minutes, so you know whether to keep operating or evacuate. Sentinel is available in New Zealand.\u003c\/p\u003e\n\u003cp\u003eEach is useful on its own. Together they close the loop, from the truth about your structure to the decision you act on.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eFull Technical Specification\u003c\/h2\u003e\n\u003ch3\u003eAccelerometer\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eType: Tri-axial MEMS silicon\u003c\/li\u003e\n\u003cli\u003eRange: ±5g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDynamic Range and Signal Quality\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDynamic range: 91dB (0.1–20Hz), 85dB (0.1–80Hz)\u003c\/li\u003e\n\u003cli\u003eOffset error: \u0026lt;±1% over operating temperature range\u003c\/li\u003e\n\u003cli\u003eLinearity: \u0026lt;±0.5%\u003c\/li\u003e\n\u003cli\u003eGain error: \u0026lt;±1% over operating temperature range\u003c\/li\u003e\n\u003cli\u003eIntegral non-linearity: \u0026lt;0.0006% (full range)\u003c\/li\u003e\n\u003cli\u003eResolution: 24 bits\u003c\/li\u003e\n\u003cli\u003eSNR: 101dB (200Hz), 104dB (100Hz), 107dB (50Hz)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eA\/D Conversion and Signal Processing\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSampling: Zero-skew autonomous sampling, 1ppm time-base (0–60°C)\u003c\/li\u003e\n\u003cli\u003eAnti-alias: 1-pole RC filter (fc = 10kHz)\u003c\/li\u003e\n\u003cli\u003eA\/D type: 24-bit Sigma-Delta\u003c\/li\u003e\n\u003cli\u003eSensor data output rate: 50Hz, 100Hz, 200Hz\u003c\/li\u003e\n\u003cli\u003eFiltering: FIR digital anti-alias filter\/decimator, linear phase\u003c\/li\u003e\n\u003cli\u003eMeasurement bandwidth: DC to 20, 40, or 80Hz\u003c\/li\u003e\n\u003cli\u003eRecorded dynamic range: 101dB (80Hz BW), 104dB (40Hz BW), 107dB (20Hz BW)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTiming\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eType: Synchronised to UTC. Internal GPS, NTP, IEEE 1588v3 PTP (master or slave), backup real-time clock\u003c\/li\u003e\n\u003cli\u003eAccuracy: \u0026lt;1µs UTC with GPS lock or PTP, \u0026lt;5ms typical via NTP, 50ppm on backup RTC alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommunication\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eType: Integrated LAN, external 3\/4\/5G cellular modem, Wi-Fi via USB or Ethernet\u003c\/li\u003e\n\u003cli\u003eProtocol: TCP-IP\u003c\/li\u003e\n\u003cli\u003eServices: TLS-encrypted HTTPS web server, programmatic HTTPS API, SeedLink, email outputs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTriggering\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eType: Trigger recordings based on PGA or channel value, trigger transmission to EQResponder Central Recorder array management systems\u003c\/li\u003e\n\u003cli\u003ePre-trigger filter options: 0.1Hz or 1.0Hz high-pass, 5.0Hz, 10.0Hz, or 20.0Hz low-pass, or any band-pass combination\u003c\/li\u003e\n\u003cli\u003eAbsolute level: Independent thresholds on each channel, selectable AND\/OR channel triggering\u003c\/li\u003e\n\u003cli\u003ePre-event length: 10 to 60 seconds\u003c\/li\u003e\n\u003cli\u003ePost-event length: 10 to 600 seconds\u003c\/li\u003e\n\u003cli\u003eRelay output upgrade (option): up to 2 solid state relay outputs, latching or non-latching, active high or active low\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eData Storage\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFormat: MiniSEED, CSV (compressed or uncompressed), JSON metadata file\u003c\/li\u003e\n\u003cli\u003eMetadata: Flash disk, PGA, peak channel accelerations, trigger duration\u003c\/li\u003e\n\u003cli\u003eStorage: 32GB MLC flash disc (SLC option), triggered\/continuous data, SeedLink ring buffer \u0026gt;90 days\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eUser Interface\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eType: Desktop\/tablet\/mobile browser compatible web server, Windows\/macOS\/Linux supported\u003c\/li\u003e\n\u003cli\u003eFeatures: Parameter configuration, live data and diagnostics display, data downloads, mapping\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePower\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInput range: 10.5 to 30.0V DC\u003c\/li\u003e\n\u003cli\u003eTypical consumption: 2.5W at 13.8V input\u003c\/li\u003e\n\u003cli\u003eExternal battery\/UPS: 12V SLA, 7.0Ah, 36-hour runtime with plug-pack 230VAC to 13.8VDC charger (option: 24V SLA compatible)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSize\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDimensions: 140 x 84 x 50mm\u003c\/li\u003e\n\u003cli\u003eWeight: 0.8kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEnvironmental\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHousing: Aluminium case, IP54 rated, IP65 rated enclosure option\u003c\/li\u003e\n\u003cli\u003eTemperature range: -10°C to +60°C standard, non-condensing (-40°C to +60°C option)\u003c\/li\u003e\n\u003cli\u003eMounting: Separate mounting plate with level adjustment and protective dust cover, IP65 rated enclosure option\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 year standard, extended option up to 6 additional years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0836\/3324\/2327\/files\/CSI_EQResponder_Specification_20250827.pdf?v=1785817973\" target=\"_blank\" rel=\"noopener\"\u003eDownload Specification Sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":49511807680727,"sku":null,"price":4300.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/3324\/2327\/files\/eqr-90-detail_542d2372-d604-4b51-bee4-7ee26eecdb8b.png?v=1785308318","url":"https:\/\/canterburyseismic.com\/products\/eqr-90-strong-motion-accelerograph","provider":"My Store","version":"1.0","type":"link"}