Loop Powered Indicator offers 1.00 Vdc drop.July 20, 2010 -
Supplied in polycarbonate housing with acrylic window, Model PB-LPI 2-wire digital indicator monitors 4-20 mA process signal and provides local indication on LCD with 4 active digits featuring ½ in.-high characters displayed with/without backlight. Digital readout is directly proportional to milliamp input, and configuration is done via 3 buttons at rear of display. Configured to display any combination of numbers between -1999 and +9999, display can be forward or reverse acting.
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Original Press release
Devar, Inc.
706 Bostwick Ave.
Bridgeport, CT, 06605
USA
New Loop Powered Indicator offers low 1.00 VDC Drop
Bridgeport, CT - Devar, a leading manufacturer of instruments for monitoring, control and data acquisition, is pleased to introduce the Model PB-LPI two-wire digital indicator that monitors a 4 to 20 mA process signal and provides local indication on a liquid crystal display.
Model PB-LPI features four active digits with half inch high characters, which can be displayed with or without backlight, and provides digital readout directly proportional to the milliamp input. Configuration of the PB-LPI is accomplished using three buttons located at the rear of the display. The display can be forward or reverse acting and can be configured to display any combination of numbers between -1999 and +9999. The housing is constructed of rugged polycarbonate with an acrylic window. Once properly installed in the panel, the exposed front side of the meter is NEMA 4X, suitable for indoor or outdoor use. A four position terminal block is provided at the rear of the meter for field wiring.
The meter is installed through a 3 inch diameter hole cut in the panel and locked in place using two 6-32 threaded studs and two 5/8 inch long hex nuts, which are located diagonally at the rear of the enclosure. Two 0.144" diameter holes must be drilled in the panel for the threaded studs. A four position terminal block is provided at the rear of the meter for field wiring. To operate the meter with the backlight turned on, wire between the +IN A and the -IN terminals. To operate the meter with the backlight turned off, wire between the +IN B and the -IN terminals. A SPARE terminal is also provided as a tie point.
Summary of Specifications:
INPUT
Range:4 to 20 mA
Voltage drop:(light on) 5.2 VDC
Voltage drop:(light off) 1 VDC
Maximum forward current: 60 mA
Maximum reverse current: 100 mA
DISPLAY
Type: 4 digit, LCD, 1/2" high digits
Backlight: LED, hyper-orange, select by input wiring
CONFIGURATION
Display at 20 mA: -1999 to 9999 counts
Display at 4 mA: -1999 to 9999 counts
Zero offset range: -1999 to 9999 counts
Decimal point: User selectable
Configuration Method: Push button
PERFORMANCE
Resolution: 16 bits
Calibration Accuracy: ± 0.05% of span
Temperature effect: ± 0.01% of span per °C, typical
Temperature range: -30 to +85°C
ENCLOSURE
Material: Polycarbonate body Acrylic window
Rating: NEMA 4X (front face)
About Devar
DEVAR has been known as a manufacturer of quality instrumentation products for over 40 years. Throughout these years customer service has remained paramount, positioning DEVAR as an instrument supplier second to none in design, quality, reliability and service. DEVAR units interface with all standard and nonstandard process variable signals and are available in a variety of enclosures.
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