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PTT74 HART transmitters
- PTT74-Ex is a smart 2-wire transmitter for temperature and other universal input measurement applications.
- Is fully HART-compatible.
- Provides excellent flexibility, low storage and installation costs. The high reliability ensures a safe system operation and low maintenance costs.
- Input
Resistance thermometer (2,3,4 wire circuit)
Thermocouples B,C,E,J,K,L,N,R,S,T,U
Thermoresistant (NTC)
Resistance remote signaling Unit(0…5000 Ohm)
Voltage, mV (-125…1150 mV)
- Output
2-wire technique
4…20 mA
- Operating Temperature
-40°C to 85°C
- Electrical isolation between input and output(I/O Isolation)
- Digital low drift processing of measurement values
- Customer –specific linearization
32 tie points
- Continuous sensor self-monitoring
Parameters saved permanently in EEPROM
Monitoring of ADC and DAC parameters every 1 sec
Wire break monitoring acc. With NAMUR NE 89
- Dual Input functionality
Absolute, differential, average values
- Parameterization (Software configuration)
Smartware Calibration Tools (SCT)
Siemens PDM Software
ABB SMART VISION Software
Hand held terminal: DHH691, 691HT, STT04, HC275, HC374, HC475 …
- Approval for explosion protection
Intrinsically safe II 2 G EEx ib IIC T6, mount in zone 1
II 3 G EEx nA II T6, mount in zone 2
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