the 420tw range of din-rail terminals provide input isolation and signal conversion n voltage, current and thermocouple inputs n rfi protection, input isolation n replace standard din-rail terminals n simple 2 wire connection n high noise immunity n low cost solution isolating terminal blocks 420tw wiring diagram dimensions and connections options and ordering codes description specifications 420tw hl-a 420tw hl-e 420tw hl-f 420tw hl-g 420tw tc-j 420tw rtd-j 420tw hl-a C axx 9 4-20ma 0-5 volts 1-5 volts 0-10 volts thermocouple rtd parameter min typ max comments supply voltage 11v 24v 32v powered from output side input current 0ma 0-20ma 29ma full scale volt drop 0.2v 0.3v on input side (20ma input) input impedance (volt in) 1m voltage input input impedance (ma in) 10 ma input output linearity error 0.1% temp coefficient 100ppm/?c load resistance error 5ppm/ 0 |