Condition:New
Type:Logic ICs
Double photoelectric isolation lightning protection
Fully differential input is not afraid of interference
Supports various types of thermocouples
K. S, R, B, N, e, J, T type
It can be configured freely by software
Different types can be mixed
PRODUCT PARAMETERS
RS485 Modbus-RTU 4-channel thermocouple temperature collector
●Input signal: thermocouple (J, K, T, E, R, S, B type)
●Number of channels: 4 channels
●Resolution: 24BIT
●Sampling frequency: 100Hz
●Working voltage: 6-35VDC, with over-current, over-voltage, anti-reverse protection
●Power consumption: 500mW
●Communication interface: photoelectric isolation, RS485 interface
●Communication protocol: standard Modbus-RTU protocol
●Communication baud rate: 600bps~115200bps
●Communication distance: <1200M
●Protection level: ±18KV ESD, 3KVrms isolation voltage
●Scope of application: Thermocouple temperature acquisition system based on RS485 bus
●Working temperature: -40°~85°C
●Working humidity: 0~95% without condensation)
●Dimensions: 120*72*38mm
●Net weight: 0.3Kg
PRODUCT ADVANTAGE
1. Fully isolated design
Power interface DCDC isolation
Communication interface optocoupler isolation
2. Dual watchdogs
Using STMicroelectronics industrial-grade MCU built-in dual watchdogs, never crash
3. Industrial grade design
6-35VDC wide voltage
-40~85°C wide temperature
0~95% (non-condensing) wide humidity
4. Perfect protection
All interfaces are protected against reverse connection
Power interface overcurrent and overvoltage protection
Signal interface TVS, ESD protection
5. Support multiple types of thermocouples
Different types can be connected at the same time
Can be configured independently through software
With cold junction compensation function
6. Imported thermocouple acquisition chip
Using Ti professional chip, high precision, low code hopping, differential input has stronger anti-interference ability
7. Advanced technology
Using SMT production technology, advanced industry casts excellent quality
USAGE METHOD
Default address: 01
Default type: K type
Default communication parameters: 9600-8-N-1
All parameters can be modified using the included software
VCC: Connect the positive pole of the power supply
GND: Connect to the negative pole of the power supply
+5V: floating
GND: floating
4S5+: RS485 communication port positive
4S5-: RS485 communication port negative
IN1+: Connect the positive pole of thermocouple 1
IN1-: Connect the negative pole of thermocouple 1
IN2+: Connect the positive pole of thermocouple 2
IN2-: Connect the negative pole of thermocouple 2
IN3+: Connect the positive pole of thermocouple 3
IN3-: Connect to the negative pole of thermocouple 3
IN4+: Connect the positive pole of thermocouple 4
IN4-: Connect the negative pole of thermocouple 1
COMI: floating
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