National Semiconductor LM903
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...| Part No. | LM903 |
|---|---|
| Datasheet | LM903 Download |
| Manufacturer |  National Semiconductor |
| Description | Fluid Level Detector |
| Buy | Stock & Price |
GENERAL 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 fluidsFEATURES
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 NS Package Numbe...
