The 250 is a high accuracy, intrinsically safe Process Indicator designed to operate with digital output transducers. Having an IP67 weatherproof case, new tactile keyboard and various mounting options, the 250 is perfect for the most arduous of installations.
The 250 Programmable Process Indicator accepts a 4-20mA signal from a wide range of transducers such as pressure or temperature transmitters, weigh scales, pH sensors, flowmeters or level transmitters. The Indicator will display the signal level on the bar graph and the scaled process variable on the large numeric display.
Solid state relay outputs provide up to four level alarms and a 25 point non-linearity correction table allows the instrument to be programmed for non-linear signals.
The Process Indicator is powered entirely from the 4-20mA current loop and, therefore, requires no external power or batteries. The instrument is fully programmable with setup parameters such as span, offset, alarm levels etc, stored in a non-volatile memory which will retain all data for more than 10 years without power.
The Model 250 is housed in an attractive IP67 (Nema 4X) polycarbonate enclosure which is completely watertight. A wall mounting bracket is supplied as standard, while a 51mm (2” ) pipe mounting bracket is available as an option. Alternatively, the Model 250 can be supplied as a panel mount instrument.
The 250 is certified as intrinsically safe to European ATEX/IECEx standards, and CSA US/C standards for both the USA and Canada, see specification for details.