Multispan instruments company provides process indicators. These process indicators are used for display of linear/non-linear process parameters. These indicators have interface with 2-wire transmitters and other control instruments. Field calibration for zero span and span, auxiliary power supply for transmitters, and alarm & trip functions are other features of these indicators. Technical data of these process indicators include: input of 4 to 20 ma, 0 to 10 v, pulse input; range is fixed or optionally by keyboard; display is 3½-digit or 4½-digit as required; keyboard with sealed membrane keys; accuracy of ±0.5 per cent of fsd, ±1 digit; relay output, 1 c/o, 5 a contacts; supply is 230 v, 110 v ac, ±10 per cent, 50 hz; and operating temperature at 5 to 50ºc.
