RTD, TC, potentiometer, linear resistance, and bipolar mV input
Single input, dual input or 2 channels (2×4 terminals)
Wide ambient operating temperature of -50 to +85°C
Total accuracy from 0.014%
2.5 kVAC galvanic isolation
Full assessment to IEC61508: 2010 for use in SIL 2/3 applications
Application
Temperature measurement of a wide range of TC and RTD types.
Conversion of wide span linear resistance and potentiometer inputs to 4…20 mA.
Conversion of bipolar mV signals to 4…20 mA.
Integration into asset management schemes.
Critical applications requiring superior accuracy and/or sensor redundancy and drift detection.
Technical characteristics
True dual input transmitter, accepts the widest range of dual input combinations.
Sensor redundancy – output automatically switches to a secondary sensor in the event of primary sensor failure, maintaining uptime.
Sensor drift detection – alerts when sensor differential exceeds user-defined limits, for maintenance optimization.
Dynamic variable mapping for process data in addition to the primary variable e.g. dual input features such as average, differential, and min./max. tracking.
Groundbreaking digital and analog signal accuracy over full input span and ambient conditions.
Extensive sensor matching including Callendar Van Dusen and custom linearizations.
Programmable input limits with runtime metering ensure maximum process traceability and sensor out of range protection.
IEC 61508 : 2010 full assessment up to SIL 3 together with enhanced EMC Functional Safety testing to IEC 61236-3-1.
Configuration via PReset using PR5909 Loop Link /HART modem, or by Asset Management tool (e.g. Pactware, AMS, HART communicator) for which all relevant DD, eDD and DTM files are available
The 6437A can be mounted in zone 2 and zone 22 / Class I, Division 2, Groups A, B, C, D.
