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The DPF300 is a 4-20 mA loop powered panel mount indicator which displays a variety of process variables in engineering units (GPM, LPM, PSIG, %RH, etc.), with independent, fully selectable decimal point for rate and total display. No separate power supply is needed, as the DPF300 Series indicators take power directly from the current loop. All programming is done via the front keypad. There are no jumpers to configure or potentiometers to scale. An internal lithium battery ensures that all the programming is retained in memory, even when the loop power is disconnected. The DPF300 can be programmed for either a linear input or square root extraction for use with differential pressure flowmeters. The DPF301 general purpose indicator features one 4 1 /2 digit rate display, while the DPF302 flow indicator features a dual, 2-line 4 1 /2 digit rate display and 8-digit totalizer. The totalizer can be reset from either the front keypad or remotely via a contact closure. The DPF300 Series indicators are available in a choice of panel mount, NEMA 4X, or explosion-resistant enclosures.
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