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.

Product Characteristic
 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