Five versatile field and panel mounting instruments that can process and display the output from most flowmeters in safe and hazardous areas. These rate totalisers will accept pulse inputs from a wide variety of transducers including two wire proximity detectors, open collectors and magnetic pick-offs. The intrinsically safe instruments have ATEX and FM certification allowing hazardous area installation throughout Europe and the USA. The Type nL model also has ATEX certification permitting installation in Zone 2 without barriers or isolators. Accessories, including alarms and display backlights, further extend the applications for these instruments. All models are supplied calibrated to customer requirement free of charge and if required they can be labeled to show units of measurement, tag number and application.