In the instruments industry, the traditional 4–20 mA analog transmitters are upgrading to the fieldbus with digital communication. HART fieldbus communication has digital communication capability with compatible analog signal. HART MODEM is a necessary and convenient tool for the analog products upgrading and signal exchanging in the control plant.
We provide two kinds of HART modem. HART-RS232 is the converter for HART signal to RS-232 signal. HART-USB is the converter for HART signal to PC virtual series port.
According to the HART physical layer specification
Isolated transformer prevents the influence of earthing.
Voltage signal modulator/demodulator
Low power consumption designation
Powered by series port or USB port
Interface Type: DB9 female mount
Ambient Temperature: 0 ～ 50 ℃
Compressive Strength :500 V AC HART bus and serial port (UART,USB)
Receiving Impedance : ≥5 K Ω, end-to-end
Output Signal VPP: 600 mV ≥ VPP ≥ 400 mV, 500 Ω load resistance
Receiving Sensitivity: 120 mV, 500 Ω test resistance
Configuration Kit for HART Modem
1. Easy to use
2. Compatible with all standard HART Instruments
3. LEDs for signaling the sending / receiving
4. No external power supply required
5. Standard USB/RS232 connection to PC
6. Galvanic isolation