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19. LT SERIES PULSE INPUT TRANSMITTER SPECIFICATIONS
Mechanical
Case Dimensions ......................................................................................... 120 x 101 x 22.5 mm
Case Mounting ................................................................................ 35 mm DIN rail per EN 50022
Electrical Connections............................................................. Detachable screw plug connectors
Environmental
Operating Temperature ............................................................................................... 0°C to 55°C
Storage Temperature ............................................................................................... -40°C to 85°C
Relative Humidity ........................................................... 95% from 0°C to 40°C, non-condensing
Power & Electrical
Power to Transmitter ........................................................................... 85-264 Vac or 90-300 Vdc
....................................................................
12-30 Vac or 10-48 Vdc (low voltage power option)
Power Isolation .................. 250 Vrms between power, analog output, signal input, and serial I/O
Transmitter Setup
Selection of Signal Ranges & Temperature Sensors............ Jumpers on signal conditioner board
Selection of Serial Format (RS232 or RS485) & Excitation Level ............ Jumpers on main board
Programming ................ Via RS-232 from PC using Instrument Setup software and CBL04 cable
Analog Output
Output Levels ................................................................. 4-20 mA, 0-20 mA, 0-10V, -10V to +10V
Compliance at 20 mA .................................................................................. 10V (0-500 ohm load)
Compliance at 10V ......................................................................... 2 mA (5 kohm minimum load)
Output Resolution ....................................................................................... 16 bits (65,536 steps)
Output Accuracy ............................ ±0.05% of full span for DC inputs, ±0.1% for AC RMS inputs
Output Update Rate .............................................. 60/sec at 60 Hz power, 50/sec at 50 Hz power
Output Filtering ......................................................................................... Digitally programmable
Serial I/O
(standard)
Serial formats .................................................... RS232 or RS485 (half or full duplex), selectable
Serial protocol ............................................................. Custom ASCII or Modbus (RTU or ASCII)
Serial connector ......................................................................... Detachable screw terminal plugs
Transducer Excitation Output
(standard)
Output Isolation ....................................................................................... 50 Vdc to meter ground
Selectable levels ................. 5 Vdc ± 5%, 100 mA; 10 Vdc ± 5%, 120 mA; 24 Vdc ± 5%, 50 mA
Dual Relay Output
(standard)
Relay type ................................................... Two solid state relays, SPST, normally open, Form A
Load rating ................................................................................... 120 mA at 140 Vac or 180 Vdc