NiuBol 3.0/NBL-W-NS User manual

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1
Noise Sensor V3.0/NBL-W-NS
Product Description
Noise transducers are complex and sophisticated
devices that enable precision measurements of
sound. This instrument has a durable construction
and will last for several years of normal use when
operated correctly. Please read this manual carefully
and do not lose it.
Technical parameters
Measurement range: Range: 30~130dB.
Output: 485 output
Accuracy (23±5°C):
Frequency weighting in accordance with IEC 61672 type 2,
calibrated with an input signal of 94dB (31.5Hz - 8kHz).
Frequency range: 31.5Hz to 8kHz.
Time response: Fast response: T = 200ms.
The time response simulates the time response of the
human ear.
Calibrator: B&K (Bruel & kjaer), Multifunction Sound
Calibrator, type 4226.
Microphone: Condenser microphone.
Microphone size: 0.5 inch.
Range Selection: 30~130dB
Maximum output impedance: 200 ohms.
Power Supply: DC 12V
Power Loss: DC 12V: ≈20mW
Packaging: ABS plastic
Operating temperature: -15-50°C (5-122°F).
Operating humidity: <80% relative humidity.
Wiring method
(1) If equipped with our collector, directly use the
sensor cable to connect the sensor to the
corresponding interface on the collector. cable to
connect the sensor to the corresponding interface on
the collector.
(2) If the transmitter is purchased separately, the
wiring sequence of the matching wires of the
transmitter are as follows for:
Thread
Colour
output signal
Communicatio
n Type
Red
Power Positive
Black
(Green)
Power Ground
Yellow
A+/TX
Blue
B-/RX

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Noise Sensor V3.0/NBL-W-NS
Structural dimensions
MODBUS-RTU communication protocols
I. Serial Port Format
Data bits 8 bits
Stop bit 1 or 2 bits
Check digit None
Baud rate 9600 Two communication intervals of
at least 1000ms or more
Second, the communication format
[1] Write device address
Send: 00 10 Adress CRC (5 bytes)
Return: 00 10 CRC (4 bytes)
Explanation:
1. The address bit of the read/write address
command must be 00.
2. Adress is 1 byte, the range is 0-255.
Example:
Send 00 10 01 BD C0
Return 00 10 00 7C
[2] Read device address
Send: 00 20 CRC (4 bytes)
Return: 00 20 Adress CRC (5 bytes)
Explanation: Adress is 1 byte, the range is
0-255.
Example:
Send 00 20 00 68
Return: 00 20 01 A9 C0
[3] Read real-time data
Send: Adress 03 00 00 00 00 01 XX XX
Explanation: As shown in the figure below:
coding
Function Definition
remark
Adress
Station number (address)
03
Function Code
00 00
Starting address
00 01
Read Points
XX XX
CRC check code, front
low and back high
Return：Adress 03 02 XX XX YY YY
instructions：
coding
Function Definition
remark
Adress
Station number (address)
03
Function code
02
Read unit byte
XX XX
Noise data (front high,
back low)
hexadecimal
system
YY YY
CRC check code
Steps to calculate the CRC code:
1、Preset the 16-bit register as hexadecimal FFFF
(i.e. all 1s). Call this register as CRC register;
2, put the first 8-bit data and the low bit of the

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Noise Sensor V3.0/NBL-W-NS
16-bit CRC register in an iso or, put the result in the
CRC register;
3, shift the contents of the register one bit to the
right (towards the low bit), fill the highest bit with 0,
and check the lowest bit;
4, if the lowest bit is 0: repeat step 3 (shift again)
If the lowest bit is 1: the CRC register is
iso-orthogonal to the polynomial A001 (1010 0000
0000 0001);
5. Repeat steps 3 and 4 until it is shifted right 8
times so that the entire 8-bit data is all processed;
6, repeating steps 2 to 5 for the next 8-bit data
processing;
7, the final CRC register obtained is the CRC code;
8、When putting the CRC result into the information
frame, the high and low bits will be exchanged,
with the low bit coming first.
Instructions for use
Wire the sensor as described in the Wiring Methods
and switch on the power and collector switch to
acquire the measurement point noise.
Caveat
1、Please check whether the package is intact, and
check whether the product model is the same as the
Please check whether the package is in good
condition, and check whether the product model is
consistent with the selected model;
2、Do not carry electricity wiring, wiring is
completed to check for errors before power;
3、Don't change the welded components or wires
when using the product. devices or wires when
using the product has been welded at the factory;
4, the sensor is a precision device, the user in the
use of please do not self Sensors are precision
devices, users should not disassemble, use sharp
objects or corrosive liquids to touch the sensor
surface of the sensor to avoid damage to the
product;
5、Please keep the calibration certificate and
certificate of conformity, and return with the
product when maintenance.
trouble clearing
1、When analogue output, the display meter
indicates that the value is 0 or not within the range.
The collector may not be able to acquire
information correctly due to wiring problems.
Please check if the wiring is correct and firm;
2、If it is not the above reason, please contact the
manufacturer.
Contact us
Pre-sales consultation: [phone]
After-sales service: [phone]
Postcode: 421000
Email：[email protected]
Website: http://www.niubol.com
Address: Room 102, District D, Houhu Industrial
Park, Yuelu District, Changsha City, Hunan
Province, China