SONBEST SM3713B High Temperature Humidity Sensor User Manual

SM3713B using the standard ,easy access to PLCDCS and other instruments or systems for monitoring temperature,humidity state quantities.The internal use of high -precision sensing core and related devices to ensure high reliability and excellent long-term stability,can be customized

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RS232,RS485,CAN,4-20mA,DC0~5V10V,ZIGBEE,Lora,WIFI,GPRS and other output methods.

Technical Parameters

Technical parameter

Parameter value

Brand

SONBEST

Temperature measuring range

-30~80

Temperature measuring accuracy

±0.5 @25

Humidity measuring range

0~100%RH

Humidity accuracy

±3%RH @25

Interface

RS485/4-20mA/DC0-5V/DC0-10V

Power

DC12~24V 1A

Running temperature

-30~80

Working humidity

5%RH~90%RH

Product Selection

Product DesignRS485,4-20mA,DC0-5V,DC0-10VMultiple output methods, the products are divided

into the following models depending on the output method.

Product model

output method

SM3713B

RS485

SM3713M

4-20mA

SM3713V5

DC0-5V

SM3713V10

DC0-10V

Product Size

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In the case of broken wires, wire the wires as shown in the figure. If the product itself has no leads, the core color is for reference.
How to use?

Application solution ShanghaiSonbest Industrial Co., Ltd

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Product List

Communication Protocol
The product uses the RS485 MODBUS-RTU standard protocol format, and all operation or reply commands are in hexadecimal data. When the device leaves the factory, the default device address is 1, and the default baud rate is: for modules and non-recording instruments: 9600, 8, n, 1 (for the recorder

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series products, the default is: 115200, 8, n, 1).

1. Read data (Function code 0x03)

The inquiry frame (in hexadecimal). Example of sending: To query 1 piece of data of device No. 1, the

host computer sends the command: 01 03 00 00 00 02 C4 0B .

Address

Function code

Starting address Data length

Checksum

00 00

00 02

C4 0B

For a correct inquiry frame, the device will respond with data: 01 03 04 02 19 00 00 2A 4C , and the

response format is:

Address

Function code Length

Data 1

Data 2

Checksum

02 18

02 19

2A 4C

Data description: The data in the command is in hexadecimal. Taking Data 1 as an example, 02 18

converted to decimal value is 536. Assuming the data magnification factor is 100, then the true value is

536/100 = 5.36, and the others can be deduced by analogy.
2. Common Data Address Table

Configuration

Data Type

Value Range

Address

Description

40001

00 00

temperature

Read Only

0~65535

40002

00 01

humidity

Read Only

0~65535

40101

00 64

Model Code

Read-only

0~59999

40102

00 65

Total Number of Read-only

1~1600

Measuring Points

40103

00 66

Device Address Read/Write

1~249

40104

00 67

Baud Rate

Read/Write

0~6

40105

00 68

Communication Read/Write

1 Query

Mode

40106

00 69

Protocol Type

Read/Write

1 MODBUS-RTU

3. Read and modify the device address

(1) Read or query the device address

If you don’t know the current device address and there is only one device on the bus, you can query

the device address through the command FA 03 00 66 00 01 71 9E .

Device address

Function code

Starting address Data length

Checksum

00 66

00 01

71 9E

FA, which is 250, is the universal address. When you don’t know the address, you can use 250 to

obtain the real device address. 00 66 is the register of the device address.

For a correct query command, the device will respond. For example, the resp onse data is: 01 03 02 00

01 79 84. The format analysis is shown in the following table:

Device address

Function code

Starting address Address ID

Checksum

00 01

79 84

In the response data, the first byte 01 represents the real address of the cur rent device.

(2) Change the device address

For example, if the current device address is 1 and you want to change it to 02, the command is: 01 06

00 66 00 02 E8 14 .

Device address

Function code

Checksum

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00 66

00 02

E8 14

After the change is successful, the device will return the information: 02 06 00 66 00 02 E8 27. The

format analysis is shown in the following table:

Device address

Function code

Checksum

00 66

00 02

E8 27

In the response data, after the modification is successful, the first byte is the new device address.

Generally, after the device address is changed, it takes effect immediately. At this time, users need to

modify the query commands in their own software accordingly.

4. Read and modify the baud rate

(1) Read the baud rate

The default factory baud rate of the device is 9600. If you need to change it, you can perform the

change operation according to the following table and the corresponding communication protocol. For

example, to read the baud rate ID of the current device, the command is: 01 03 00 67 00 01 35 D5 . The

format analysis is as follows.

Device address

Function code

Starting address Data length

Checksum

00 67

00 01

35 D5

Read the baud rate code of the current device. Baud rate codes: 1 for 2400; 2 for 4800; 3 for 9600; 4

for 19200; 5 for 38400; 6 for 115200.

For a correct query command, the device will respond. For example, the response data i s: 01 03 02 00

03 F8 45. The format analysis is shown in the following table:

Device address

Function code

Data length

Baud rate code

Checksum

00 03

F8 45

According to the baud rate code, 03 represents 9600, which means the current baud ra te of the device

is 9600.

(2) Change the baud rate

For example, to change the baud rate from 9600 to 38400, that is, change the code from 3 to 5, the

command is: 01 06 00 67 00 05 F8 16 .

Device address

Function code

00 67

00 05

F8 16

Change the baud rate from 9600 to 38400, that is, change the code from 3 to 5. The new baud rate will

take effect immediately. At this time, the device will stop responding, and the query command for the

device’s baud rate needs to be modified accordingly.

5. Read and modify the correction value (valid for some products)

(1) Read the correction value

When there is an error between the data and the reference standard, we can reduce the display er ror by adjusting the “correction value”. The adjustable range of the correction difference is plus or minus 1000,

that is, the value range is 0 – 1000 or 64535 – 65535. For example, when the displayed value is 100 less

than the actual value, we can correct it by adding 100. The command is: 01 03 00 6B 00 01 F5 D6 . In the

command, 100 is the hexadecimal value 0x64. If you need to decrease the value, you can set a negative

value. For example, – 100 corresponds to the hexadecimal value FF 9C. The calculation method is 100 –

65535 = 65435, and then convert it to hexadecimal, which is 0x FF 9C. The device correction value starts

from 00 6B. We take the first parameter as an example for illustration. When there are multiple parameters,

the methods for reading and modifying the correction value are the same.

Device address

Function code

Starting address Data length

Checksum

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00 6B

00 01

F5 D6

For a correct query command, the device will respond. For example, the response data is: 01 03 02 00

64 B9 AF. The format analysis is shown in the following table:

Device address

Function code

Data length

Correction value Checksum

00 64

B9 AF

In the response data, the first byte 01 represents the real address of the current device, and 00 6B is

the register for the correction value of the first state variable. If the device has multiple parameters, the

operation methods for other parameters are the same. Generally, temperature and humidity sensors have

this parameter, while light sensors usually do not.

(2) Change the correction value

For example, if the current state variable value is too small and we want to increase its real – value by

1, the command to correct the current value by adding 100 is: 01 06 00 6B 00 64 F9 FD .

Device address

Function code

Checksum

00 6B

00 64

F9 FD

After the operation is successful, the device will return the infor mation: 01 06 00 6B 00 64 F9 FD. After

the change is successful, the parameter takes effect immediately.

1. temperature and current computing relationship
For example, the range is 0~50, the analog output is 4~20mA current signal, temperature and

current The calculation relationship is as shown in the formula: C = (A2 -A1) * (X-B1) / (B2-B1) + A1, where

A2 is temperature range upper limit, A1 is the lower limit of the range, B2 is current output range upper limit,

B1 is the lower limit, X is the currently read temperature value, and C is the calculated current value. The

list of commonly used values is as follows:

current(mA)

temperatureValue ()

Calculation Process

0.0

(50-0)*(4-4)÷(20-4)+0

3.1

(50-0)*(5-4)÷(20-4)+0

6.3

(50-0)*(6-4)÷(20-4)+0

9.4

(50-0)*(7-4)÷(20-4)+0

12.5

(50-0)*(8-4)÷(20-4)+0

15.6

(50-0)*(9-4)÷(20-4)+0

18.8

(50-0)*(10-4)÷(20-4)+0

21.9

(50-0)*(11-4)÷(20-4)+0

25.0

(50-0)*(12-4)÷(20-4)+0

28.1

(50-0)*(13-4)÷(20-4)+0

31.3

(50-0)*(14-4)÷(20-4)+0

34.4

(50-0)*(15-4)÷(20-4)+0

37.5

(50-0)*(16-4)÷(20-4)+0

40.6

(50-0)*(17-4)÷(20-4)+0

43.8

(50-0)*(18-4)÷(20-4)+0

46.9

(50-0)*(19-4)÷(20-4)+0

50.0

(50-0)*(20-4)÷(20-4)+0

As shown in the above formula, when measuring 8mA, current current is 16.5

2. humidity and current computing relationship

For example, the range is 0~100%RH, the analog output is 4~20mA current signal, humidity and

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current The calculation relationship is as shown in the formula: C = (A2 -A1) * (X-B1) / (B2-B1) + A1, where

A2 is humidity range upper limit, A1 is the lower limit of the range, B2 is current output range upper limit, B1

is the lower limit, X is the currently read humidity value, and C is the calculated current value. The list of

commonly used values is as follows:

current(mA)

humidityValue (%RH)

Calculation Process

0.0

(100-0)*(4-4)÷(20-4)+0

6.3

(100-0)*(5-4)÷(20-4)+0

12.5

(100-0)*(6-4)÷(20-4)+0

18.8

(100-0)*(7-4)÷(20-4)+0

25.0

(100-0)*(8-4)÷(20-4)+0

31.3

(100-0)*(9-4)÷(20-4)+0

37.5

(100-0)*(10-4)÷(20-4)+0

43.8

(100-0)*(11-4)÷(20-4)+0

50.0

(100-0)*(12-4)÷(20-4)+0

56.3

(100-0)*(13-4)÷(20-4)+0

62.5

(100-0)*(14-4)÷(20-4)+0

68.8

(100-0)*(15-4)÷(20-4)+0

75.0

(100-0)*(16-4)÷(20-4)+0

81.3

(100-0)*(17-4)÷(20-4)+0

87.5

(100-0)*(18-4)÷(20-4)+0

93.8

(100-0)*(19-4)÷(20-4)+0

100.0

(100-0)*(20-4)÷(20-4)+0

As shown in the above formula, when measuring 8mA, current current is 29%RH

1. temperature and DC0-5Vvoltage computing relationship
For example, the range is 0~50, the analog output is 0~5V DC0-5Vvoltage signal, temperature and

DC0-5Vvoltage The calculation relationship is as shown in the formula: C = (A2 -A1) * (X-B1) / (B2-B1) + A1,

where A2 is temperature range upper limit, A1 is the lower limit of the range, B2 is DC0-5Vvoltage output

range upper limit, B1 is the lower limit, X is the currently read temperature value, and C is the calculated

DC0-5Vvoltage value. The list of commonly used values is as follows:

DC0-5Vvoltage(V)

temperatureValue ()

Calculation Process

0.0

(50-0)*(0-0)÷(5-0)+0

10.0

(50-0)*(1-0)÷(5-0)+0

20.0

(50-0)*(2-0)÷(5-0)+0

30.0

(50-0)*(3-0)÷(5-0)+0

40.0

(50-0)*(4-0)÷(5-0)+0

50.0

(50-0)*(5-0)÷(5-0)+0

As shown in the above formula, when measuring 2.5V, current DC0 -5Vvoltage is 25

2. humidity and DC0-5Vvoltage computing relationship

For example, the range is 0~100%RH, the analog output is 0~5V DC0 -5Vvoltage signal, humidity and

DC0-5Vvoltage The calculation relationship is as shown in the formula: C = (A2 -A1) * (X-B1) / (B2-B1) + A1,

where A2 is humidity range upper limit, A1 is the lower limit of the range, B2 is DC0 -5Vvoltage output range

upper limit, B1 is the lower limit, X is the currently read humidity value, and C is the calculated

DC0-5Vvoltage value. The list of commonly used values is as follows:

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DC0-5Vvoltage(V) 0 1 2 3 4 5

SM3713B User Manual
humidityValue (%RH) 0.0 20.0 40.0 60.0 80.0 100.0

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Calculation Process (100-0)*(0-0)÷(5-0)+0 (100-0)*(1-0)÷(5-0)+0 (100-0)*(2-0)÷(5-0)+0 (100-0)*(3-0)÷(5-0)+0 (100-0)*(4-0)÷(5-0)+0 (100-0)*(5-0)÷(5-0)+0

As shown in the above formula, when measuring 2.5V, current DC0 -5Vvoltage is 50%RH

1. temperature and DC0-10Vvoltage computing relationship
For example, the range is 0~50, the analog output is 0~10V DC0-10Vvoltage signal, temperature

and DC0-10Vvoltage The calculation relationship is as shown in the formula: C = (A2 -A1) * (X-B1) / (B2-B1)

+ A1, where A2 is temperature range upper limit, A1 is the lower limit of the range, B2 is DC0-10Vvoltage

output range upper limit, B1 is the lower limit, X is the currently read temperature val

DC0-10Vvoltage(V)

temperatureValue ()

Calculation Process

0.0

(50-0)*(0-0)÷(10-0)+0

5.0

(50-0)*(1-0)÷(10-0)+0

10.0

(50-0)*(2-0)÷(10-0)+0

15.0

(50-0)*(3-0)÷(10-0)+0

20.0

(50-0)*(4-0)÷(10-0)+0

25.0

(50-0)*(5-0)÷(10-0)+0

30.0

(50-0)*(6-0)÷(10-0)+0

35.0

(50-0)*(7-0)÷(10-0)+0

40.0

(50-0)*(8-0)÷(10-0)+0

45.0

(50-0)*(9-0)÷(10-0)+0

50.0

(50-0)*(10-0)÷(10-0)+0

ue, and C is the calculated DC0-10Vvoltage value. The list of commonly used values is as follows:

As shown in the above formula, when measuring 5V, current DC0 -10Vvoltage is 25

2. humidity and DC0-10Vvoltage computing relationship

For example, the range is 0~100%RH, the analog output is 0~10V DC0-10Vvoltage signal, humidity

and DC0-10Vvoltage The calculation relationship is as shown in the formula: C = (A2 -A1) * (X-B1) / (B2-B1)

+ A1, where A2 is humidity range upper limit, A1 is the lower limit of t he range, B2 is DC0-10Vvoltage

output range upper limit, B1 is the lower limit, X is the currently read humid

DC0-10Vvoltage(V)

humidityValue (%RH)

Calculation Process

0.0

(100-0)*(0-0)÷(10-0)+0

10.0

(100-0)*(1-0)÷(10-0)+0

20.0

(100-0)*(2-0)÷(10-0)+0

30.0

(100-0)*(3-0)÷(10-0)+0

40.0

(100-0)*(4-0)÷(10-0)+0

50.0

(100-0)*(5-0)÷(10-0)+0

60.0

(100-0)*(6-0)÷(10-0)+0

70.0

(100-0)*(7-0)÷(10-0)+0

80.0

(100-0)*(8-0)÷(10-0)+0

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90.0

(100-0)*(9-0)÷(10-0)+0

100.0

(100-0)*(10-0)÷(10-0)+0

ity value, and C is the calculated DC0-10Vvoltage value. The list of commonly used values is as follows: As shown in the above formula, when measuring 5V, current DC0 -10Vvoltage is 50%RH

Disclaimer

This document provides all information about the product, does not grant any license to intellectual

property, does not express or imply, and prohibits any other means of granting any intellectual property

rights, such as the statement of sales terms and conditions of this product, other issues. No liability is

assumed. Furthermore, our company makes no warranties, express or implied, regarding the sale and use

of this product, including the suitability for the specific use of the product, the marketabi lity or the

infringement liability for any patent, copyright or other intellectual property rights, etc. Product

specifications and product descriptions may be modified at any time without notice.

Company: Shanghai Sonbest Industrial Co., Ltd

Address:Building 8,No.215 North east road,Baoshan District,Shanghai,China

Web: http://www.sonbest.com

Web: http://www.sonbus.com

SKYPE: soobuu

Email: sale@sonbest.com

Tel: 86-021-51083595 / 66862055 / 66862075 / 66861077

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Documents / Resources

SONBEST SM3713B High Temperature Humidity Sensor [pdf] User Manual
SM3713B, SM3713M, SM3713V5, SM3713V10, SM3713B High Temperature Humidity Sensor, SM3713B, High Temperature Humidity Sensor, Temperature Humidity Sensor, Humidity Sensor

References

User Manual

SONBEST SM3713B High Temperature Humidity Sensor User Manual

SM3713B High Temperature Humidity Sensor

Product Information

Specifications

Product Usage Instructions

Product Selection

Communication Protocol

How to Use?

Frequently Asked Questions (FAQ)

Q: What is the default device address of the product?

Q: What is the temperature measuring range of the product?

Q: What are the available output methods for the product?

Documents / Resources

References

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