Description:
SITRANS TH 300 with HART protocol is designed to support all common thermocouples, resistance and milli-volt sensors
Setup is quick and easy with SIMATIC PDM
Explanation:
In SITRANS TH300 there is various connections for the attach RTD and other devices
Main two connections is for positive and negative supply which passes 4-20mA current supply
We connect 250Ωresistor in series connection with the power supply
Its voltage picks up to 5V and it is connected with HART modem and we get signals in to controller with USB connection
There is 2-wire or 3-wire RTD sensor connected with the SITRANS TH300 which is used for temperature sensing element
Then connect the HART modem across the 250Ω resistor and USB port connect to the computer
With the help of SIMATIC Manager we measure the temperature of the device or other sensing elements with the use of SITRANS TH300
Schematic Diagram:
Configuration Steps:
Start SIMATIC manager
File > New project
View > Process device network view
Options > Set PG/PC interface > USB S785 B
Project > Insert new object > Network > Communication network > Assign device type > HART modem network
Comport interface > Communication
HART modem network > Insert object > Assign > Device identification
Right click on device > Open object > upload to PG/PC
Explosion proof transmissions can be installed and operated within potentially explosive atmosphere in compliance with the information given in the relevant certificates and approvals in operating instruction
The sensor activation and measuring range to be programmed
Intrinsically safe and non-sparking version for use in hazardous areas
Special characteristic curve given
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