Product

  SM8701 using the standard ,easy access to PLC，DCS and other instruments or systems for monitoring temperature 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 RS232,RS485,CAN,4-20mA,DC0~5V\10V,ZIGBEE,Lora,WIFI,GPRS and other output methods.

Technical Parameters

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Technical parameter	Parameter value
Brand	SONBEST
Temperature measurement range	0~+300°C (Max 380℃)
Temperature measurement accuracy	±1 or %1 take the maximum value (maximum ±3°C)
Repeat measurement accuracy	±0.5 or %0.5 take the maximum value (maximum ±2°C)
Optical Resolution	1.6:1
Spectral range	18-14um
Response time	100ms
Emissivity	0.96
Interface	RS485/4-20mA/DC0-5V/DC0-10V
Power	DC12~24V 1A
Dimensions	Φ24mm×80mm

Product Selection

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    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
SM8701B	RS485总线
SM8701M	4-20mA
SM8701V5	DC0-5V
SM8701V10	DC0-10V

How to wiring?

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Why choose this product?

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How to use?

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  For example, the range is 0~300℃, 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
4	0.0	(300-0)*(4-4)÷(20-4)+0
5	18.8	(300-0)*(5-4)÷(20-4)+0
6	37.5	(300-0)*(6-4)÷(20-4)+0
7	56.3	(300-0)*(7-4)÷(20-4)+0
8	75.0	(300-0)*(8-4)÷(20-4)+0
9	93.8	(300-0)*(9-4)÷(20-4)+0
10	112.5	(300-0)*(10-4)÷(20-4)+0
11	131.3	(300-0)*(11-4)÷(20-4)+0
12	150.0	(300-0)*(12-4)÷(20-4)+0
13	168.8	(300-0)*(13-4)÷(20-4)+0
14	187.5	(300-0)*(14-4)÷(20-4)+0
15	206.3	(300-0)*(15-4)÷(20-4)+0
16	225.0	(300-0)*(16-4)÷(20-4)+0
17	243.8	(300-0)*(17-4)÷(20-4)+0
18	262.5	(300-0)*(18-4)÷(20-4)+0
19	281.3	(300-0)*(19-4)÷(20-4)+0
20	300.0	(300-0)*(20-4)÷(20-4)+0

    As shown in the above formula, when measuring 8mA, current current is 79℃。
  For example, the range is 0~300℃, the analog output is 0~5V voltage signal, temperature and voltage 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 voltage output range upper limit, B1 is the lower limit, X is the currently read temperature value, and C is the calculated voltage value. The list of commonly used values is as follows:

voltage(V)	temperatureValue (℃)	Calculation Process
0	0.0	(300-0)*(0-0)÷(5-0)+0
1	60.0	(300-0)*(1-0)÷(5-0)+0
2	120.0	(300-0)*(2-0)÷(5-0)+0
3	180.0	(300-0)*(3-0)÷(5-0)+0
4	240.0	(300-0)*(4-0)÷(5-0)+0
5	300.0	(300-0)*(5-0)÷(5-0)+0
10	112.5	(300-0)*(10-4)÷(20-4)+0

    As shown in the above formula, when measuring 2.5V, current voltage is 150℃。
  For example, the range is 0~300℃, the analog output is 0~10V voltage signal, temperature and voltage 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 voltage output range upper limit, B1 is the lower limit, X is the currently read temperature value, and C is the calculated voltage value. The list of commonly used values is as follows:

voltage(V)	temperatureValue (℃)	Calculation Process
0	0.0	(300-0)*(0-0)÷(10-0)+0
1	30.0	(300-0)*(1-0)÷(10-0)+0
2	60.0	(300-0)*(2-0)÷(10-0)+0
3	90.0	(300-0)*(3-0)÷(10-0)+0
4	120.0	(300-0)*(4-0)÷(10-0)+0
5	150.0	(300-0)*(5-0)÷(10-0)+0
6	180.0	(300-0)*(6-0)÷(10-0)+0
7	210.0	(300-0)*(7-0)÷(10-0)+0
8	240.0	(300-0)*(8-0)÷(10-0)+0
9	270.0	(300-0)*(9-0)÷(10-0)+0
10	300.0	(300-0)*(10-0)÷(10-0)+0
15	206.3	(300-0)*(15-4)÷(20-4)+0

    As shown in the above formula, when measuring 5V, current voltage is 150℃。

Product Pictures

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Product Pictures

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