Type:Logic ICs
Condition:New
Model:YC107-NTC
No.:1
Decoration and construction contents:Hydropower project
OneSummary
The interface is fully protected, accidentally touching the 24V, and even 220V communication, will not be damaged.
Communication, collection, power supply, the three part is completely isolated.
Main characteristics
Be based on RS485 Interface,Modbus Protocol temperature acquisition module.
quarantineRS485Interface support Modbus-RTU Agreement.
The temperature calculation is completed inside the module, and the temperature value can be read directly. The unit is centigrade.
The module interface has all the protection components, and the measuring terminal GND is isolated from the power supply to protect the interface chip.
Power source: DC8-30V. actual measurement30Vconsume power9mA,24Vconsume power12mA,12Vconsume power23mA,8Vconsume power33mA.
Use standard35mmInstallation way of guide rail.
Outline size:88*72*59
Operating temperature:-35C ~+50C.
Applications: liquid, gas temperature measurement areas, usuallyNTCRange of temperature measurement-40C-150C. accuracy0.1C.
NTCResistance temperature acquisition module:
Support variousNTCThe temperature is measured by resistance, and the corresponding relation between temperature and resistance is calculated by the following formula:
Rt = R *EXP (B* (1/T1-1/T2))
The above formula is explained as follows:
1.RtIs the thermistor in?T1Resistance at temperature;
2.RIs the thermistor in?T2Nominal resistance at ambient temperature;
3.BValue is an important parameter of thermistor;
4.EXPyeseThenInferior;
5.HereT1andT2Refer toKKelvin temperature,Kdegree=273.15 (Absolute temperature+)Centigrade
Such as:25The nominal resistance value of5K,BValue3470KTheNTCThermistor
And that's itR=5000, T2=273.15+25,B=3470, RT=5000*EXP (3470* (1/T1-1/ (273.15+25)),
Substitute this timeT1The temperature can be used to find the resistance value of the thermistor at the corresponding temperature
Therefore, by measuringNTCThe current temperature can be obtained by reversing the resistance values.
NTCYes2An important parameter: the following software is required to write parameters to the module.
R25Is:25Zero power resistance at C. Unless otherwise specified, it isNTCNominal resistance.
BValue: the thermal index, defined as the difference between the natural logarithm of the zero power resistance value at two temperatures, and the ratio to the reciprocal of the two temperatures.
2 pictures and interfaces
A:RS485 Serial communication A
B:RS485 Serial communication B
Power SupplyV+DC power positive
Power SupplyGNDDC power supply, negative pole, common end
R (+ n):NTCSensor power supply side0.1mAOutput.
GND:NTCSensor common terminal.
3.2 Function code03H(read)
Input register information table (read only attribute)
| Word address | describe | Word address | describe |
| 20H | sensor1Temperature value | 30H | Retain |
| 21H | sensor2Temperature value | 31H | Retain |
| 22H | sensor3Temperature value | 32H | Retain |
| 23H | sensor4Temperature value | 33H | Retain |
| 24H | sensor5Temperature value | 34H | Retain |
| 25H | sensor6Temperature value | 35H | Retain |
| 26H | sensor7Temperature value | 36H | Retain |
| 27H | sensor8Temperature value | 37H | Retain |
| 28H | sensor9Temperature value | 38H | Retain |
| 29H | sensor10Temperature value | 39H | Retain |
| 2AH | sensor11Temperature value | 3AH | Retain |
| 2BH | sensor12Temperature value | 3BH | Retain |
| 2CH | sensor13Temperature value | 3CH | Retain |
| 2DH | sensor14Temperature value | 3DH |
2EH sensor 15Temperature value 3EH Retain
2FH sensor 16Temperature value 3FH Retain
Modscan32 test symbol integer register
Modbuss pool test symbol integer register
