24PC datasheet(14/73 Pages) HONEYWELL

14 / 73 page

www.honeywell.com/sensing

FORCE

Model 1865 Force/Pressure Transducer

The Model 1865 is a high-performance transducer specifically designed

to address the needs of medical and specialized OEM applications.

Offering laser-trimmed compensation, the Model 1865 may be specified

to operate with either a constant current or voltage supply.

The Model 1865 employs a solid state piezoresistive pressure

transducer mounted in a plastic package. For applications where force is

applied by a flexible membrane to the sensor, such as found in infusion

pumps, the Model 1865’s precision height silicone diaphragm provides

long life and is a reliable replacement for older force or load cell

transducers. Utilizing a silicon rubber diaphragm, the 1865 is compatible

with some liquid media applications. The Model 1865 may be operated

in either current or voltage excitation, and its output may be amplified or

signal conditioned, as required. The semiconductor-based sensor offers

high resolution using its Wheatstone Bridge strain gauge design. The

height of the unit’s patented, poured-in-place silicon rubber diaphragm

is controlled to ensure sensitivity to low pressure. This diaphragm is

bonded to a plastic header and transmits force applied through a special

silicone gel to the diaphragm of a silicon peizoresistive die. The back of

the die is exposed to atmospheric pressure, which results in a gauge

pressure output.

Pressure over-range protection:

3X span or 60 psi, whichever is least

Media/materials compatibility

Top side:

Room atmosphere, directly applied force, and liquids

compatible with dimethyl silicon, polyetherimide (Ultem)

Bottom side:

Non-corrosive dry gasses and fluids compatible with

silicon, pyrex, RTV silicone, and ceramic

Sensor:

Gauge pressure

Diaphragm:

Dimethyl silicone

Compensation:

Laser trimmed normalised output

PRESSURE

REFERENCE

0 psi to 5 psi

1865-01G-L-N

0 psi to 10 psi

1865-02G-L-N

0 psi to 15 psi

1865-03G-L-N

0 psi to 25 psi

1865-04G-L-N

0 psi to 30 psi

1865-05G-L-N

PRESSURE

REFERENCE

0 psi to 5 psi

1865-01G-K-N

0 psi to 10 psi

1865-02G-K-N

0 psi to 15 psi

1865-03G-K-N

0 psi to 25 psi

1865-04G-K-N

0 psi to 30 psi

1865-05G-K-N

OPTIONS

Excitation 1.5 mA

Excitation 10 Vdc

24PC Datasheet(PDF) 14 Page - Honeywell Solid State Electronics Center

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