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Shanghai Meixu Measurement and Control Technology Co., Ltd

E-mail
442365872@qq.com
Phone
15000321529
Address
No. 488 Guanghua Road, National Economic Development Zone, Xiaokunshan Town, Songjiang District, Shanghai

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Intelligent temperature and humidity sensor

NegotiableUpdate on 01/05

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The MX-WD-07G series of temperature and humidity intelligent sensors are widely used in communication, building construction, automation and other fields that require temperature and humidity monitoring. Connect current to the sensor, separate the temperature measurement component from the signal output. Performance is safe, reliable, aesthetically pleasing, and easy to install. The outer shell is waterproof, and the internal circuit board also has a special waterproof function. Low power, wide range environmental temperature measurement, stable and reliable operation. Due to its silicone rubber sealing structure and excellent waterproof performance, it can also be applied in harsh environments.

Product Details

1 Intelligent temperature and humidity sensorMX-WD-07GseriesWidely used in fields such as communication, building construction, automation, etc. that require temperature and humidity monitoring. Connect current to the sensor, separate the temperature measurement component from the signal output. Performance is safe, reliable, aesthetically pleasing, and easy to install.Intelligent temperature and humidity sensorThe outer shell is waterproof, and the internal circuit board also has a special waterproof function. Low power, wide range environmental temperature measurement, stable and reliable operation. Due to its silicone rubber sealing structure and excellent waterproof performance, it can also be applied in harsh environments.

2.Application field

1In the fields of plastics, chemical fibers, and mechanical engineering:

2Various water and air pressure measurements;

3Medical and healthcare applications, pharmaceuticals;

4Chemical environmental protection and wastewater evaporation;

5In the fields of desulfurization, denitrification, and industrial control.

3. Product features

1. On site LCD display;

2. Good seismic resistance and high-precision measurement;

3. Wide range temperature measurement (-40 ℃~120 ℃);

4. Fast thermal response and long usage time;

5. 10-30V wide voltage supply, easy to install.

4.Overall outline drawing

温湿度智能传感器

5.Detailed specifications

model：	MX-WD-07G
measurement range：	temperature：-40℃~100℃(customizable)；humidity range：0~100% RH
output signal：	4-20mA（Two line system code 2）；RS485（Two line system code 4）
precision range：	temperature accuracy：±0.5℃(default)；Humidity accuracy：±3%RH(default)
power supply：	24(12~36)VDC (amplify the signal)
storage environment：	-40℃~80℃
display：	LCDLCD digital display
install:	Wall installation;plug-in
housing material：	Cast aluminum explosion-proof shell

6.Selection reference

model	range	output	power supply
MX-WD-07G	0-80°/0-80%	RS485	24VDC
for example：	MX-WD-07-(0-80)/80%-4

7.agreement content

1.1 Power supply and485signal:

Wide voltage input12-24VWhen connected485Please pay attention when using the signal lineA\\BTwo wires cannot be connected, and all devices inside the motor cannot be connected incorrectly.

1.2 Wiring Xiangshen:

	terminal	Instructions
power supply	5P-1	V+（24V DC）
power supply	5P-2	V-
communication	5P-4	485-A
communication	5P-5	485-B
temperature conversion	2P-T	temperature4-20mA output
Humidity conversion	2P-H	humidity4-20mA output

1.3 485 On site wiring instructions:

When multiple devices are connected to the motor simultaneously485Model equipment, multiple requirements to be noted for on-site wiring:

2.communication protocol:

2.1 Basic communication parameters:

encoding	8Bit binary
data bit	8-bit
parity bit	none
stop bit	1bit
Error verification	CRC
Baud rate	2400bit/s、4800bit/s、9600 bit/s Can be set, default:9600bit/s

2.2Network Communication Protocol-RTU The communication protocol and format are as follows:

Initial structuree ≥4byte

address code= 1byte

function code= 1byte

data area= Nbyte

Error checking= 16bitCRCencoding

Construct deadline≥4byte

address code:As the transmitter address, it functions in the communication network (factory default)0×01）

function code: USES, Function Code:0x03 (register data)

data area:For special communication data

CRCcode:Two byte checksum

address code	function code	Register starting address	Register length	Low bit of verification code	High bit of verification code
1byte	1byte	2byte	2byte	1byte	1byte

address code	function code	Effective byte count	Data Zone 1	Second data area	第Ndata area	verification code
1byte	1byte	1byte	2byte	2byte	2byte	2byte

2.3register address:

register address	PLC Or configure the address	Content	operation
0000 H	40001	humidity	read-only
0001 H	40002	temperature	read-only

Information Framework：

address code	function code	starting address	data length	Low bit of verification code	High bit of verification code
0x01	0x03	0x00 0x00	0x00 0x02	0xC4	0x0B

Response frame：

address code	function code	Return the number of valid bytes	humidity value	temperature value	Low bit of verification code	High bit of verification code
0x01	0x03	0x04	0x02 0x92	0xFF 0x9B	0x5A	0x3D

Temperature calculation:

When the temperature is below 0 ℃ The temperature data is uploaded in the form of a complement code.

temperatureFF9BH(hexadecimal)= -101 =>temperature = -10.1℃

Humidity calculation:

humidity292 H (hexadecimal)= 658 =>humidity= 65.8%RH

3. Common problems and solutions:

3.1The device cannot connect toPLCOr computerPossible reasons for the end

1)There is more than one computerCOMport,The selected port is incorrect

2)Equipment address error or duplicate address (default for factory)1）

3)Baud rate, checksum, data bit or stop bit error

4) 485Motor not connected orABTwo wires connected backwards

5)The equipment cable is too long or requires close range power supply

6) USB to 485Driver not installed or damaged

7)Equipment damage