The HT622B volume level meter features high sensitivity and will work well in many applications. The color LCD display will provide you with the most important information, and the additional wind shield ensures accurate measurement regardless of the conditions. The device offers several modes of operation, and thanks to the possibility of connecting it to a computer via USB, you will gain convenient access to data. To power the meter you will need 3 AAA batteries (not included).
The meter is equipped with a high-quality condenser microphone and extremely sensitive sensors. This allows for precise measurements in the range of 30-130dBA/dBC and frequencies of 30Hz-8kHz. The set also includes a special wind shield - use it so that unnecessary noise does not interfere with the work of the device. The device takes measurements in different ranges - you can enter them manually or use the automatic mode. There are also 2 options for measuring frequency - A and C. But that's not the end! With HT622B you can make measurements in Fast (125 ms) or Slow (1 s) mode. You can also select Max/Min function and set the unit - db or son.
The device is very easy to use. Access to specific functions will be gained by using comfortable, intuitive buttons. The meter is also equipped with a clear, color LCD screen, which displays not only the measurement results, but also, among others, selected modes and low battery indicator. The device allows you to store data. You can also connect it to your computer with the included USB cable. Conveniently view stored information, manage it and organize it the way you want - with HT622B it is possible! You'll also find a recording disc in the package for easy data export.
HT622B is lightweight, handy and compact. This means that both its use and storage are extremely easy, convenient and hassle-free. For safe transportation, the meter comes with a practical carrying case. This functional meter you can always have with you and use whenever you need it! HT622B is suitable for many applications. Use it in industry, on a busy street or in a recording studio. It can also be used at school, in the office and even at home, for example to control the volume of domestic appliances. It will also be useful in a factory, cinema, construction site or hotel. In short, it will turn out to be indispensable wherever sounds of different intensity may occur.
Brand | Habotest |
---|---|
Model | HT622B |
Sound pressure accuracy | ±1.5dB (94dB@1KHz), ±5dB (94dB@8KHz) |
Frequency response | 30Hz-8kHz |
Dynamic range | 50dB |
Measuring range | 30-130dBA, 30-130dBC |
Weighting properties | A/C |
Dynamic characteristics | FAST: 125ms, SLOW: 1s |
Microphone | Polarized, capacitance |
Range | 30-80dB, 40-90dB, 50-100dB, 60-110dB, 60-110dB, 70-120dB, 80-130dB |
Bargraph | Yes |
Auto/manual range | Yes |
Under/Over range | Under/Over |
Data hold | Yes |
MAX/MIN | Yes |
Auto power off | Yes |
Low battery indicator | Yes |
Power supply | 3x AAA 1.5V batteries (included) |
Dimensions | 189x60x33mm |
Weight | About 180g |
Weight kg | 0.370000 |
---|---|
Is Featured | Ne |
Manufacturer | Habotest |
categ_Import_Root | Tools/Measuring tools/Electric meters |
subcategory1 | Measuring tools |
subcategory2 | Electric meters |
Kratkog opis osnovnih pojmova videonadzor kamera | |||||
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IR | IR svijetlo. Ovisno od kamere do kamere može biti od 20 do 120 metara ili više metara (EXIR tehnologija) | ||||
LED | LED svijetlo je vidljivo svijetlo koje koriste kamere s nocnim radom u boji. Ovisno od kamere do kamere može biti od 20 ili više metara | ||||
IP66, IP67 | zaštita od vlage i vode. Oznaka da je kamera 100% otporna | ||||
IK10 | zaštita od udaraca – antivandal kamera | ||||
HCL | je značajka koja je nastala zbog prekomjerne ekspozicije od jakih izvora svjetlosti poput svjetala ili reflektora. HLC je vrlo korisno u sprečavanju zasljepljivanja sigurnosnih kamera noću. Čitljivost registarske pločice na parkiralištu na ulaznim točkama. | ||||
Frame rate fp/s | broj snimljenih slika u sekundi | ||||
Auto Iris | Mehanička funkcija objektiva, koja automatski regulira protok svjetla na senzor kamere. | ||||
AWB | Auto Whitte balans je elektronski proces u video kamerama a koristi se da se dobiju realne boje na temelju bijele boje. Proces se odvija na bazi bijelog objekta u slici. | ||||
IP kamere | To su Internet protokol kamere namjenjene za rad putem LAN mreze ili UTP kabla. | ||||
TURBO HD ili HDTVI, HDCVI, AHD | Nudi video snimak visoke kvalitete putem koaksialnog kabela, idealan za stara ozičenja. | ||||
BLC | kompenzacija pozadinskog osvjetljenja | ||||
PoE | Power Over Ethernet – napajanje kamera putem UTP kabela, napajanje direktno iz PoE snimaca ili PoE switch-a. | ||||
Auto Iris | Mehanička funkcija objektiva, koja automatski regulira protok svjetla na senzor kamere. | ||||
CCTV | Close Circuit TV ( Slobodan prijevod Interna TV ) U Hrvatskoj koristimo naziv Video nadzor. | ||||
H.264 | H.264 je standard za video kompresiju te je ekvivalent za MPEG-4 Part 10, ili MPEG-4 AVC (za Advanced Video Coding ). | ||||
Lux | Jedinica mjere za nivo svjetla definirana kada svjetlosni tok od 1 lumena padne na područje od 1 m2. | ||||
Min. Illumination | Minimalno osvjetljenje (osjetljivost kamere ) potrebno za rad kamere Osjetljivost kamere povezana je sa F-STOP objektiva , refleksije sa objekta i topline boje. Što je veći F-STOP to je potrebno više svjetla i obratno. Napr: za istu kameru ako je 1Lux / F2,0 onda je 0,5 Lux / F1,4. | ||||
Progressive scan | Progresivno skeniranje - način izrade slike tako da se skeniraju sve linije po redu. Bolja slika. | ||||
Real Time | Prikaz slike u stvarnom vremenu daje se obično kod DVR-ova, Multiplexera itd. | ||||
Resolution | Broj Horizontalnih TV linija za analogne uređaje ili broj točaka (pixela ) za digitalne uređaje. | ||||
Rezolucija snimanja | Određuje koliko maksimalno kvalitetno uređaj za snimanje može snimati neki video signal. Rezolucija prikazivanja slike odnosi se na cijeli ekran bez obzira na broj video ulaza ( kamera ). Rezolucija snimljenog materijala ovisi u kojoj je rezoluciji snimam svaki kanal. | ||||
Objektiv | Optička komponenta koja se sastoji od jednog ili više elementa optičkog stakla - specijalno brušenih leća. | ||||
PinHole Lens | Optika fiksnog irisa koja koristi vrlo malen otvor za diskretan nadzor prostora |
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