Advanced electronic systems offers a loop-powered isolator, model aes-is-623-90010. Specifications: it has two input channels; one output channel for each input; input signal - 4-20 ma dc; load resistance - 600 w; load effect - +0.015 per cent per w for 50-250 w, +0.002 per cent per w for 250-600 w; accuracy - < + 0.25 per cent of span; linearity - < + 0.25 per cent of span; stability -<+ 0.25 per cent of span; isolation between i/p, o/ps and 1.5 k vac ground; span adjustability - provided on the front panel; power supply - nil, loop powered; operating temperature - 0-55 c; storage temperature - 0-75c; effect of change in ambient - span+100 ppm/c; temperature zero - + 100 ppm/c; relative humidity -0-95 per cent rh [non - condensing]; humidity effect-+0.2 per cent of span; termination - screw type terminals, 5 a rating, can accommodate psd 7937 round lug of dowell`s make; housing - industrial grade abs plastic enclosure suitable for surface and din rail mounting, din en 50022; and mechanical dimension - 70 [w] x 60 [b] x 110 [h] mm.
