Hello, the equipment came with a certificated paper of conformity or similar? Thanks

My unit did not include any form of certification. Hope this helps.

I am not interested in a Cert of conformity, does the unit come with a calibration certificate?

Hi, the unit doesn't come with calibration certificate, we can do the calibration certificate if you need but with extra cost. Please send email to us if you need to do the calibration certificate, we will quote you the price.

Hi at what distance from which point of the device should SPL be measured?

As noted, the level produced depends the VOLUME of the calibrator CHAMBER, hence how well the microphone fits into it. There is a small "stop" at the base of each microphone adapter. With just the microphone adapter in place and no microphone, it's very soft even close to your ear. 1. Insert the microphone to the point that it stops 2. Turn on the calibrator to the required level, 94 dB is the more common 3. Set the meter to "A" weighting 3. Adjust your meter as appropriate 4. Repeat for the second level and with both "A" and "C" weighting if the meter has both. Make notes of any differences for future reference.

On the digital sound level meter calibrator nd9 is there any way i can get a users manual emailed to me?

Hi, please find the quick user guide from the link below. LINK: https://www.cd50.net/wp-content/uploads/2022/01/ND9_E.pdf

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Professional Sound Level Calibrator Decibel Meter Calibration with Three Calibration Level at 94dB & 104dB & 114dB, SPL Meter Calibrator for dB Noise meter

Professional Sound Level Calibrator Decibel Meter Calibration with Three Calibration Level at 94dB & 104dB & 114dB, SPL Meter Calibrator for dB Noise meter

Product ID: 256910772

📏Compact 60x130x37.5mm benchtop design

🔊3 precise calibration levels (94dB, 104dB, 114dB)

🔋Auto power-off & battery status LED

AR$322258

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Description

🎯 Calibrate like a pro — precision sound checks made effortless!

ENERGY EFFICIENT - Auto power-off feature maximizes battery life so you can focus on your work, not replacements.
PORTABLE POWERHOUSE - Lightweight and compact design (400g) fits perfectly in your toolkit for on-the-go calibration.
SMART LED INDICATORS - Stay informed with green LEDs for calibration status and red LED alerts for low battery—never miss a beat.
STABLE BENCHTOP BASE - Engineered for steady placement, ensuring flawless calibration every time without the hassle.
TRIPLE LEVEL PRECISION - Calibrate your sound meters with industry-standard 94dB, 104dB, and 114dB at 1kHz for unmatched accuracy.

This Professional Sound Level Calibrator offers three precise calibration levels (94dB, 104dB, 114dB) at 1kHz frequency, housed in a compact, benchtop design with smart LED indicators and auto power-off functionality. Lightweight and battery-operated, it’s engineered for reliable, on-the-go sound meter calibration, making it an essential tool for professionals demanding accuracy and convenience.

Specifications

ASIN	B08PD1BCH1
Batteries	2 AA batteries required. (included)
Battery Cell Type	Alkaline
Best Sellers Rank	#82,436 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #34 in Sound & Noise Meters
Color	114db / 94db / 104db Calibrator
Customer Reviews	4.5 4.5 out of 5 stars (54)
Date First Available	December 1, 2020
Item Package Quantity	1
Item Weight	10.9 ounces
Item model number	8930B
Manufacturer	Gain Express Holdings Ltd
Part Number	8930B
Product Dimensions	377.95 x 78.74 x 157.48 inches
Size	Dimension: 60 x 130 x 37.5mm
Special Features	Calibration frequency at 1K Hz with three level 114dB, 94dB and 104dB, Vivid LED display with stability and low power indicator

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