The PD6938 ProtEX+ pulse input flow rate/totalizers can be installed in a variety of areas (hazardous, dirty, wet, corrosive, hot, or cold) to provide convenient and informative display of flow rate and total from any pulse output flowmeter. These instruments will accept a variety of pulse inputs, including slow pulse rates. They can be powered from a 9-30 VDC power supply or the 4-20 mA output loop, have on-board datalogging capabilities, come with explosion-proof and intrinsically safe approvals, and can be ordered with optional 4-20 mA output and two relays.

The PD6938, with the addition of its two optional relays, can also be used as a simple batch controller.

The PD6938 can operate down to -40°C and is certified by the agencies to be installed in areas that get as cold as -55°C. The display will cease functioning below -40°C but no damage will be done to the instrument.

One of the most convenient features of these instruments is their dual-line display, which is typically used to display the flow rate on the top display and flow total, flow grand total, or a tag on the bottom display. The top display has five characters and the bottom display has eight characters for clear indication of tags, units, or alarm messages. Further enhancing the display on these instruments is a 20-segment bargraph and backlighting that can turn red during an alarm condition.

The PD6938 ProtEX+ is available in aluminum and stainless steel enclosures that are designed for easy use and installation. The process connection is available in M20, 3/4" NPT and 1" NPT and there are two other conduit holes for field wiring. Field wiring is made to removable screw terminals and the display module can be oriented in 4 different positions to accommodate different mounting configurations and requires no tools to install. The display has been designed to optimize viewing angle.