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Economical 4-20 mA Loop-Powered Indicator

Item# DPF300

In stock

Lead Time ( If not in Stock): 0 week

Economical 4-20 mA Loop-Powered Indicator DPF300 DPF300
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  • Available with Dual Rate/Total, Display
  • Linear or Square Root Extraction of Input
  • 8-Digit Totalizer Display
  • Calibration Fully Programmable Through Keypad
5 Year Warranty

Product Specs

  • Maximum Ambient Temperature 70°C (158°F)
  • Minimum Ambient Temperature -20°C (-4°F)
  • Number of Display Digits 4.5
  • Update Time For rate or total

The DPF301 Series comprises 4 to 20 mA loop-powered panel-mount indicators that display process variables in engineering units (GPM, LPM, psig, %RH, etc.), with an adjustable decimal point for rate and total display. Because these indicators take power directly from the current loop, the user can perform programming on the front keypad there are no jumpers to configure or potentiometers to scale. An internal lithium battery ensures that all programming is retained in memory, even when the loop power is disconnected. The DPF301 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 41.2 digit rate display, while the DPF302 flow indicator has a dual, 2-line, 4½ 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 (IP66), or explosion-resistant enclosures.

SPECIFICATIONS
Scalable Input Range: 3.8 to 21 mA Internal Battery (Memory Only): 3V 250 mAh lithium (2-year standby life) Rate Display (DPF301 and DPF302): 41.2 digits max (19999), 8.89 mm (0.35") high Totalizer Display (DPF302 Only): 8 Digits (99999999), 5.08 mm (0.2") high
Rate Descriptors: /sec, /min, /hr or "blank"
Unit Descriptors: Gal, Lit, FT3, M3, "blank"
Display Indications: Low battery and under/over range
Input: 4 to 20 mA DC, overcurrent protection to 60 mA, reverse polarity protected
Loop Voltage Drop: 6V max Housing
Standard: Round panel mount with NEMA 4X (IP66) sealed keypad membrane
Optional: Glass-filled polycarbonate NEMA 4X (IP66) enclosure, or explosion-resistant housing for NEMA 7, NEMA 4 (IP66), Class I, Groups B, C and D Class II, Groups E, F and G
Ambient Temperature: -20 to 70°C (-4 to 158°F)
Extended Temp Option: -30 to 70°C (-22 to 158°F)
Accuracy (Rated @ 20°C): 0.1% FS resolution, ±1 count
Temperature Drift: 50 ppm/°C typical, 200 ppm/°C worst case
Low Cutoff: A rate below 1% of selected scale (10% of square root scale) will assume the "set lo" value
Update Rate: For rate or total, once every 2 seconds
Weight:
    Basic Unit: 227 g (0.5 lb)
    With NEMA Enclosure: 454 g (1 lb)
    With Explosion-Resistant Housing: 1.6 kg (3.5 lb)

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