Kev tawg-pov thawj suab nrov meter siv qhov chaw
Cov khoom siv thov teb:
1. Tshooj 741 ntawm Txoj Cai Kev Nyab Xeeb Kev Nyab Xeeb Coal Mine tau qhia meej txog qhov yuav tsum tau kuaj lub suab nrov decibels los tswj lub suab nrov thiab txo cov xwm txheej.
2. Mining Group Occupational Disease Prevention Center, Ventilation Department, Coal Supervision Department, Mechanical and Electrical Department, thiab lwm yam.
Khoom zoo:
1. Kev lag luam thawj cov ntaub ntawv khaws cov suab nrov
2. Nws pib ntes
3. Qhov siab tshaj / yam tsawg / tuav
4. Kev lag luam thawj qhov sib piv cov kws tshaj lij tripod tuaj yeem kho rau kev ntsuas
5. Tus nqi zoo tshaj plaws hauv kev lag luam
Nta:
1. LCD zaub nrog backlight
2. Qhov siab tshaj plaws thiab qhov tsawg kawg nkaus / cov ntaub ntawv tuav
3. Ceev / qeeb lub sij hawm hnyav
4. A/C suab qib zaus qhov hnyav
5. Dav ntau yam 130dB
6. Kev ntsuas siab tshaj plaws, 0.1dB daws teeb meem
7. High/medium/low/automatic 4-band ntsuas
8. zaus teb: 31.5Hz ~ 8kHz
9. Kuaj cov ntaub ntawv khaws cia
Technical ntsuas:
Lub suab zaus qhov hnyav A thiab C
Lub Sijhawm Nyhav Ceev (ceev) 125 milliseconds; Slow (Slow) 1 vib nas this
Kev daws teeb meem 0.1dB
Qhov tseeb 1.4dB
Zaus teb 31Hz ~ 8kHz
Tso cov lej 4 tus lej, tus nqi hloov tshiab 2 zaug / thib ob
Analog bar Fast analog zaub (20 zaug / S)
Cov ntaub ntawv khaws cia 50 pawg
Microphone 1/2 "polarized condenser
Tsis siv neeg kaw tom qab 15 feeb ntawm kev tsis ua haujlwm
Ntau zaus tsawg 30-80dB nruab nrab zaus 50-100dB siab zaus 80-130dB tsis siv neeg zaus 30 ~ 130dB
Medidas 210 x 55 x 32 mm
Qhov hnyav 230 g (nrog rau roj teeb)
