Honeywell 1865-12G-LDN

The Model 1865 is a high-performance sensor specifically designed to meet the demands of medical and professional OEM applications. This model offers laser-trimmed compensation and can be specified to operate with either a constant-current or constant-voltage supply. The Model 1865 employs a solid-state piezoresistive pressure sensor mounted in a plastic package. For applications where force is applied to the sensor through a flexible diaphragm, such as infusion pumps, the Model 1865's precision high-silicon diaphragm offers long service life and serves as a reliable replacement for older force or load sensors. With a silicone rubber diaphragm, the Model 1865 is suitable for certain liquid media applications. The Model 1865 provides critical safety functions for critical care medical instruments, such as occlusion pressure or infiltration detection. Pressure data can provide medical personnel with useful diagnostic information regarding a patient's circulatory condition. These force/pressure sensors can also be used with other medical dispensing equipment, such as syringe pumps, to enhance safety and accuracy. The Model 1865 operates under current or voltage excitation, and its output can be amplified or signal-conditioned as required. The semiconductor-based sensor employs a Wheatstone bridge strain gauge design, delivering high resolution. The patented in-situ potted silicone rubber diaphragm height of the device is controlled to ensure sensitivity to low pressures. The diaphragm is bonded to the plastic header and transfers the applied force to the diaphragm of the silicon piezoresistive chip through a special silicone gel. The back side of the chip is exposed to atmospheric pressure, thereby producing a gauge pressure output.

• Silicon pressure/force interface diaphragm
• Force measurement for infusion pump applications
• Pressure measurement for liquid media
• Medical-grade materials
• 8-pin DIP electrical connection
• Laser trimming
• Optional voltage or constant current excitation

• Infusion pump
• Anesthesia monitor
• Non-corrosive, non-pressurized media level sensor
• Ventilation system
• Blood pressure device