IS200TDBTH6ACD 32 channel thermocouple input terminal module

IS200TDBTH6ACD is a 32 channel thermocouple input terminal module (TDBT) for GE Mark VI/Mark VIe gas turbine control system, designed specifically for temperature monitoring and over temperature protection of gas turbines/steam turbines. It is the core I/O card for gas turbine safety control.
1、 Basic Information
Model: IS200TDBTH6ACD (TDBT=Thermocouple Dual Redundant Base Terminal)
Series: GE IS200 series, compatible with Mark VI/Mark VIe gas turbine control system
Positioning: thermocouple signal acquisition and conditioning, connecting high-temperature thermocouples such as combustion chambers, turbines, and cylinder bodies
Certification: Industrial grade, power plant grade, compatible with SIL2 safety circuit
Installation: Rack mounted, compatible with TDBT dedicated base, supports TMR triple redundancy
2、 Core parameters (authoritative specifications)
table
Parameter specifications
32 channels of differential thermocouple input (independent channel)
Support types J/K/T/E/N/R/S/B (software configurable)
Cold end compensation with built-in high-precision CJC, error * *<± 1 ℃**
Measurement accuracy ± 0.25% reading+± 1 ℃ (typical value at 25 ℃)
Channel isolation ≥ 500VDC (channel ground, channel channel)
Sampling rate of 10Hz per channel
Power supply 24VDC ± 10%, overvoltage/overcurrent protection
Working temperature: 0 ℃~+60 ℃
Size/weight standard rack card, approximately 0.8kg
3、 Core functions
High precision temperature acquisition
32 independent differential inputs, compatible with all measuring points of the gas turbine (combustion chamber, turbine, cylinder block, exhaust, etc.)
Built in signal filtering, linearization, cold end compensation, no need for external temperature transmitter
Millivolt level thermoelectric potential → digital temperature value conversion, directly for Mark VIe controller operation
Security and redundancy
Support TMR triple redundancy, single point channel failure does not affect the system
Real time overheating monitoring, triggering emergency shutdown of gas turbine ESD (overheating protection core)
Channel level diagnosis, fault localization to a single channel, supporting Mark VIe upper computer alarm
System compatibility
Seamless integration with Mark VIe controller, IS200 series I/O, and gas turbine protection module
Suitable for GE 9E/9F/7FA heavy-duty gas turbines and combined cycle units
4、 Application scenarios
Monitoring of combustion chamber temperature of gas turbine (core measuring point, direct shutdown due to overheating)
Temperature collection of turbine cylinder body, exhaust, and bearings
Steam turbine temperature circuit
Temperature input of SIS/ETS safety system in power plant