LT-FR, 4-20 mA & Serial Data Transmitter for Duty Cycle and PWM Signals
Measures ON/OFF duty cycle or PWM signals with outstanding precision. DIN rail mounted, digitally programmable.
Features:
- 4-20 mA, 0-20 mA, 0-10V, or -10V to +10V transmitter output, 16 bits, isolated.
- RS232 or RS485 serial data output, Modbus or Laurel ASCII protocol, isolated.
- Dual 120 mA solid-state relays for alarm or control, isolated.
- Measures duty cycle with selectable resolution (1%, 0.1%, or 0.01%).
- Supports frequencies from 0.005 Hz to 10 kHz.
- Inputs from NPN or PNP proximity switches, contact closures, digital logic, magnetic pickups down to 12 mV, or AC inputs up to 250 Vac.
- Analog output resolution 0.0015% of span (16 bits), accuracy ±0.02% of span 5V, 10V or 24V dc transducer excitation output, isolated
Manufacturer: Laurel Electronics Inc.
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Specifications
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LT-FR - Specifications
| Interface | RS-232 |
| RS-485 | |
| Input Type | AC voltage |
| Output Type | 0 - 10 V DC |
| ±10 V DC | |
| 0 - 20 mA | |
| 4 - 20 mA | |
| Isolation | Yes |
| Min Temperature | 0°C |
| Max Temperature | 55°C |
LT-FR - Downloads
transmitter-duty-cycle Datasheet |
LT-FR - Similar Products
- 4-20 mA, 0-20 mA, 0-10V, or -10V to +10V transmitter output, 16 bits, isolated.
- RS232 or RS485 serial data output, Modbus or Laurel ASCII protocol, isolated.
- Dual 120 mA solid-state relays for alarm or control, isolated.
- True AC RMS measurement in one 50/60 Hz AC line cycle.
- Voltage ranges: ±0.2V, ±2V, ±20V, ±200V, ±300V, ±600V.
- Current ranges: ±2 mA, ±20 mA, ±200 mA, ±5A.
- Input ranges are user-selectable and factory-calibrated.
- AC or DC coupling for signals from DC to 5 kHz.
| Interface | RS-232, RS-485 |
| Input Type | 0 - 5 A AC, AC voltage |
| Output Type | 0 - 10 V DC, ±10 V DC, 0 - 20 mA, 4 - 20 mA |
| Isolation | Yes |
| Min Temperature | 0°C |
| Max Temperature | 55°C |
- 4-20 mA, 0-20 mA, 0-10V, or -10V to +10V transmitter output, 16 bits, isolated.
- RS232 or RS485 serial data output, Modbus or Laurel ASCII protocol, isolated.
- Dual 120 mA solid-state relays for alarm or control, isolated.
- Arithmetic functions: A+B, A-B, AxB, A/B, A/B-1.
- Input frequencies: 0.005 Hz to 1 MHz.
- Inputs from NPN or PNP proximity switches, contact closures, digital logic,
- magnetic pickups down to 12 mV, or AC inputs up to 250 Vac
- Analog output resolution 0.0015% of span (16 bits), accuracy ±0.02% of span
| Interface | RS-232, RS-485 |
| Input Type | Frequency, AC voltage |
| Output Type | 0 - 10 V DC, ±10 V DC, 0 - 20 mA, 4 - 20 mA |
| Excitation | 5 V DC, 10 V DC, 24 V DC |
| Isolation | Yes |
| Min Temperature | 0°C |
- 4-20 mA, 0-20 mA, 0-10V, or -10V to +10V transmitter output, 16 bits, isolated.
- RS232 or RS485 serial data output, Modbus or Laurel ASCII protocol, isolated.
- Dual 120 mA solid-state relays for alarm or control, isolated.
- Measures time from 0.2 µs to 999,999 hours.
- Tracks single event or accumulated time for multiple events.
- Supports inputs from NPN/PNP switches, logic, and magnetic pickups.
| Interface | RS-232, RS-485 |
| Input Type | Frequency |
| Output Type | 0 - 10 V DC, ±10 V DC, 0 - 20 mA, 4 - 20 mA |
| Excitation | 5 V DC, 10 V DC, 24 V DC |
| Isolation | Yes |
| Min Temperature | 0°C |
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Datasheet
LT-QD - Laurel 4-20 mA & Serial Data Output Transmitters for Position or Rate from Quadrature Encoders - 4-20 mA, 0-20 mA, 0-10V or -10V to +10V transmitter output, 16 bits, isolated
- RS232 or RS485 serial data output, Modbus or Laurel ASCII protocol, isolated
- Dual 120 mA solid state relays for alarm or control, isolated
- Accepts low-level differential or single-ended 5V logic level signals from shaft encoders, linear encoders, incremental encoders or optical encoders
- Programmable for position, angle or rate
- Quadrature count x1, x2 or x4 with combined pulse rate to 250 kHz
- Zero channel input
- Analog output resolution 0.0015% of span (16 bits), accuracy ±0.02% of span
| Interface | RS-232, RS-485 |
| Input Type | Frequency, Counter |
| Output Type | 0 - 10 V DC, ±10 V DC, 0 - 20 mA, 4 - 20 mA |
| Min Temperature | 0°C |
| Max Temperature | 55°C |
- 4-20 mA, 0-20 mA, 0-10V, or -10V to +10V transmitter output, 16 bits, isolated.
- RS232 or RS485 serial data output, Modbus or Laurel ASCII protocol, isolated.
- Dual 120 mA solid-state relays for alarm or control, isolated.
- Factory calibrated for 100Ω platinum (Pt100), 10Ω copper (Cu10), and 120Ω nickel (Ni120) RTDs.
- Supports 2, 3, or 4-wire RTD connections with lead resistance compensation.
- User-selectable input span from the full RTD range to as narrow as 15.0°.
- Analog output resolution: 0.0015% of span; accuracy: ±0.02% of span.
| Interface | RS-232, RS-485 |
| Input Type | RTD |
| Output Type | 0 - 10 V DC, ±10 V DC, 0 - 20 mA, 4 - 20 mA |
| Min Temperature | -40°C, 0°C |
| Max Temperature | 55°C, 70°C |