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MTL4854 Multi-modem Multiplexer HART Interfacing
Brand: MTL InstrumentsFor applications where communication paths with several field devices need to be established and maintained in parallel, the MTL4854 HART® multiplexer is the ideal product to use.
This is a module that has the same 32 channel capacity as the MTL4850 for connection to field devices but now has four HART modems rather than just one.
Essentially this gives 4 x 8 channel multiplexers in one compact housing, enabling simultaneous communication with several field devices through one serial link.
One particular use for this is during partial-stroke testing of valve positioners, where the ability to maintain access to other connected devices while the multiplexer would otherwise be locked enables plant monitoring to continue.
Features- Mount Directly to a Range of Customized Connection Units
- MTL4850 Designed for Use with SIL3 Loops: Non-interfering
- MTL4854 Designed for Use in Partial-stroke Test Valve Positioner Applications
- Connect Over 2000 Loops on One RS485 Network
- Auto Baud Rate Detection
- LED Indication for Fault Diagnosis
- Isolated Power Supply
- Firmware Upgradeable
Specifications
Brand
Number of Channels
- 32
Channel Transmitter Type
- HART Rev 5 - 7
- \
Channel Interface
- 2 connections to each channel field loop (64 total)
Host System Interface
- RS-485 2-Wire multidrop
- Up to 63 MTL4850 modules can be connected to one host
RS-485 Baud Rate
- 38400, 19200, 9600, 1200 baud
- Auto-detected
Address Selection
- 8-bit interface
- Up to 64 addresses
Alarm Output
- Vmax = 35 V
- Imax = 5 mA
- Pmax = 100 mW