{"product_id":"ilsm-305","title":"ILSM-305 Compact Sound Level Calibrator 114dB \/ 94dB \/ 104dB Calibration Level  For 1\/2\" 13.2mm Microphone Size Sound Level Meters","description":"\u003cp\u003ePortable compact battery operated sound level calibrator suitable for many sound level meters.\u003c\/p\u003e\n\u003cp\u003eWhen a microphone from a sound level meter is inserted into this calibrator, the sound level meter picks up the signal and displays the signal in dB (decibel) units. The sound level meter should be adjusted (if necessary) to match the calibrator's output signal as closely as possible\u003c\/p\u003e\n\u003cp\u003eCalibration frequency at 1K Hz with three levels 114dB, 94dB and 104 dB. The 1000 Hz frequency allows calibrating sound level meters with any frequency weighting (LIN, A, B, ...), without applying any correction factor.\u003c\/p\u003e\n\u003cp\u003eIt can be conveniently used both in laboratory and in the field. The 114 dB sound level allows performing calibrations even in high background noise environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMeet IEC 60942:2018, class 2 standard\u003c\/li\u003e\n\u003cli\u003eStay accurate even in extreme humidity condition\u003c\/li\u003e\n\u003cli\u003eSuitable for all sound level meters with microphone head mechanical compliant with IEC 61094-1 or IEC 61094-4 in a 1\/2\"(13.2mm) microphone size\u003c\/li\u003e\n\u003cli\u003eCalibration frequency at 1K Hz with three level 114dB, 94dB and 104dB\u003c\/li\u003e\n\u003cli\u003eVivid LED display with stability and low power indicator\u003c\/li\u003e\n\u003cli\u003eBattery powered, easy to carry around\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCalibration frequency: 1000Hz\u003c\/li\u003e\n\u003cli\u003eFrequency accuracy: ±1.7%\u003c\/li\u003e\n\u003cli\u003eSound Pressure Level: 94dB \/ 104dB \/ 114dB\u003c\/li\u003e\n\u003cli\u003eSound Pressure accuracy: ±0.4dB\u003c\/li\u003e\n\u003cli\u003eMicrophone head cavity diameter: 13.2mm (½\")\u003c\/li\u003e\n\u003cli\u003eStabilization time: 10 seconds\u003c\/li\u003e\n\u003cli\u003eTotal distortion: \u0026lt;3%\u003c\/li\u003e\n\u003cli\u003eAmbient Condition Influence:\n\u003cul\u003e\n\u003cli\u003eTemperature and humidity influence: \u0026lt;0.4dB @ 0...40°C and 25...90%RH\u003c\/li\u003e\n\u003cli\u003eStatic pressure influence: \u0026lt;0.1dB @65...108kPa\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eStability levels\n\u003cul\u003e\n\u003cli\u003eShort term stability (\u0026lt;60s): ±0.15dB\u003c\/li\u003e\n\u003cli\u003eStability after 1 year with normal use: ±0.35dB\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eLED indicator: 1 green\/Red: ready\/low power; 3 green: 114\/101\/94dB\u003c\/li\u003e\n\u003cli\u003eOperating Environment: 0~40°C; 25~90%RH\u003c\/li\u003e\n\u003cli\u003eStorage Environment: -20~50°C; \u0026lt;90%RH\u003c\/li\u003e\n\u003cli\u003eDimension: 60 x 130 x 37.5mm\u003c\/li\u003e\n\u003cli\u003eWeight: ~400gms\u003c\/li\u003e\n\u003cli\u003eBattery: 2 x AA Alkaline battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003eSet includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Sound Level calibrator\u003c\/li\u003e\n\u003cli\u003e2 x AA battery\u003c\/li\u003e\n\u003cli\u003eEnglish instruction manual\u003c\/li\u003e\n\u003cli\u003eStandard Factory Packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"A01","offers":[{"title":"Default Title","offer_id":43067212398635,"sku":"ILSM-305","price":93.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5850\/1675\/files\/gain-express-8930b-8930b-compact-sound-level-calibrator-114db-94db-104db-calibration-level-for-12-132mm-microphone-size-sound-level-meters-460685.jpg?v=1770633387","url":"https:\/\/instrulife.com\/products\/ilsm-305","provider":"Instrulife","version":"1.0","type":"link"}