LM903 - Fluid Level Detector

National Semiconductor

The LM903 by National Semiconductor is a Fluid Level Detector. Below is the official datasheet preview.

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LM903 Fluid Level Detector by National Semiconductor - Datasheet Preview — Official preview page of the **LM903** Fluid Level Detector datasheet (National Semiconductor).

Datasheet Details

Part number	LM903
Manufacturer	National Semiconductor
File Size	148.52 KB
Description	Fluid Level Detector
Datasheet	LM903_NationalSemiconductor.pdf
Additional preview pages of the LM903 datasheet.

LM903 Product details

Description

The LM903 uses the thermal-resistive probe technique to measure the level of nonflammable fluids A low fluid level is indicated by a warning lamp operating in continuous or flashing mode All supervisory requirements to control the thermal-resistive probe including short and open circuit probe detection are incorporated within the device The circuit has possible applications in the detection of hydraulic fluid oil level etc and may be used with partially conducting fluids

Features

Y Y Y Y Y Y Y Y Y Y Flashing or continuous warning indication Warning threshold externally adjustable Control circuitry for thermal-resistive probe Switch on reset and delay to avoid transients 600 mA flashing lamp drive capability Short and open circuit probe detection 70V transient protection on supply and control input 7V.
18V supply range Internally regulated supply b 40 C to a 80 C operation Connection Diagram Dual-In-Line Package TL H 5699.
1 Order Number LM903N See N.

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Published: Apr 25, 2005 |