WebPistonphone. Pistonphone Type 4228 is designed to be used for sound level meter and … WebBrand & type: 4228 Serial number: 1943250 Customers Instrument tag:N/A …
Acoustic Calibration Services - IEC/ANSI Dewesoft
WebCalibration is performed by the comparison method using the Brüel & Kjær Pistonphone 4228 as the standard comparative sound pressure level. The calibration report includes measurements of Sound pressure level, Frequency, and Total Distortion. If the instrument is equipped with an accessory barometer, this is checked at the current air pressure. WebBRUEL & KJAER 4228 Pistonphone; BRUEL & KJAER 4228 Pistonphone. Inquire for … current treasury tips rate
4228型 - ブリュエル・ケアー - Brüel & Kjær
WebThe Bruel & Kjaer Pistonphone Type 4228 is a small, battery-operated, high-precision … WebThe artefact circulated among the institutes was one pistonphone manufactured by Brüel and Kjaer, type 4228 [2] and serial number 2836183, with its one-inch to half-inch adaptor type DP 0776 (for coupling of LS2P measurement microphones) and its user manual. Each participant had to calibrate the pistonphone using the microphone method (insert WebBruel & Kjaer 4228: Pistonphone. ... ที่ใช้ไมโครโฟนตั้งแต่ 1/8 นิ้ว ถึง 1 นิ้ว pistonphone นี้ … current treasury exchange rate