Model 1865 Series Force/Pressure transducer DESCRIPTION The Model 1865 is a high-performance transducer specifically provide medical personnel with useful diagnostic information designed to address the needs of medical and specialized regarding the condition of the patient’s circulatory system. OEM applications. Offering laser-trimmed compensation, the These force/pressure transducers can also be used with other Model 1865 may be specified to operate with either a medical dispensing devices, such as syringe pumps, to constant current or voltage supply. improve safety and accuracy. The Model 1865 employs a solid state piezoresistive pressure May be operated in either current or voltage excitation, the transducer mounted in a plastic package. For applications Model 1865’s output can be amplified or signal conditioned, where force is applied by a flexible membrane to the sensor, as required. The semiconductor-based sensor offers high such as found in infusion pumps, the Model 1865’s precision resolution using its Wheatstone Bridge strain gauge design. height silicone diaphragm provides long life and is a reliable The height of the unit’s patented, poured-in-place silicon replacement for older force or load cell transducers. Utilizing rubber diaphragm is controlled to ensure sensitivity to low a silicon rubber diaphragm, the 1865 is compatible with some pressure. This diaphragm is bonded to a plastic header and liquid media applications. transmits force applied through a special silicone gel to the diaphragm of a silicon peizoresistive die. The back of the die The Model 1865 provides access to important safety features is exposed to atmospheric pressure, which results in a gauge in critical care medical instrumentation, such as occlusion pressure output. pressure or infiltration detection. The pressure data can FEATURES TYPICAL APPLICATIONS  Silicon pressure/force interface diaphragm  Infusion pumps  Force measurement for infusion pump applications  Anesthesia monitors  Pressure measurement for liquid media  Non-corrosive, nonpressurized media-level sensors  Medical-grade materials  Ventilation systems  8-pin DIP electrical connection  Blood pressure equipment  Laser trimmed  Syringe pumps  Choice of voltage or constant current excitation  Drug delivery systems Model 1865 Series ELECTRICAL SPECIFICATIONS PHYSICAL SPECIFICATIONS Ratings Specification Input impedance Pressure over-range protection 3X span or 60 psi, whichever Current excitation 2.0 kOhm min. to 8.0 kOhm max. is least Voltage excitation 8.0 kOhm min. to 40 kOhm max. Media/materials compatibility Output impedance Top side Room atmosphere, directly Current excitation 3.5 kOhm min. to 6.0 kOhm max. applied force, and liquids Voltage excitation 3.5 kOhm min. to 6.0 kOhm max. compatible with dimethyl Input excitation silicon, polyetherimide Current < 2.0 mA (Ultem) Voltage < 15.0 Vdc Bottom side Non-corrosive dry gasses Effect of excitation change Ratiometric and fluids compatible with Response time (10% to 90%) ≤ 5 milliseconds silicon, Pyrex, RTV silicone, Insulation resistance ≥ 100 MOhm at 50 Vdc and ceramic Output common mode voltage 50 % of input typical Mass 3.0 g with laser-trim board ENVIRONMENTAL CONDITIONS Specification Position effect ≤ 0.05 % of zero or span shift for 90° tilt in any direction Vibration effect No change in performance at 10 Gs RMS, 20 Hz to 2,000 Hz Shock 100 Gs for 11 milliseconds Life 1 million cycles PERFORMANCE SPECIFICATIONS Min. Typ. Max. Unit Temperature Compensated Performance Nonlinearity - 0.10 0.25 % of Span, BFSL Hysteresis - 0.0125 0.015 % of Span, BFSL Repeatability - 0.0125 0.015 % of Span, BFSL Output (laser trimmed normalized) Current excitation 98 100 102 mVdc Voltage Excitation 38 40 42 mVdc Zero pressure -2 0 2 mVdc Temperature Performance Compensated temperature range -1 °C to 54 °C [30 °F to 129 °F] Operating temperature range -28 °C to 54 °C [-19 °F to 129 °F] Maximum zero error 0.5 % of Span in reference to 27 °C [80.6 °F] Maximum span error 0.5 % of Span in reference to 27 °C [80.6 °F] Thermal hysteresis 0.2 % of Span, compensated temperature range Long-term stability ± 0.3 % of Span per six months 2 www.honeywell.com/sensing Force/Pressure transducer FIGURE 1. SENSING ELEMENTS REFERENCE CONDITIONS Specification 8 2 Media temperature 27 °C ± 1 °C [80 °F ± 2 °F] Ambient temperature 27 °C ± 1 °C [80 °F ± 2 °F] Vibration 0.1 G (1 m/s/s) max. 6 1 Humidity 50 % ± 10 % Ambient pressure 12.8 psi to 16.5 psi [860 mBar to 1060 mBar] Excitation source 1.5 mAdc ± 0.0015 mAdc or 7 3 10.0 Vdc ± 0.01 Vdc Pin Connection Pin Connection 1 + Output 5 + Input 2 NC 6 - Output 3 - Input 7 NC 4NC 8 NC FIGURE 2. MOUNTING DIMENSIONS IN MM (INCHES), FOR REFERENCE ONLY FIGURE 3. LASER TRIM BOARD FIGURE 4. LASER TRIM BOARD Current Excitation, Normalized Output Voltage, Normalized Output Honeywell Sensing and Control 3 ORDER GUIDE WARRANTY/REMEDY SALES AND SERVICE 1865 – 1865 – G – G – D D N N Honeywell warrants goods of its 1865 – 1865 – 1865 – G – G – G – D D D N N N Honeywell serves its customers through manufacture as being free of defective a worldwide network of sales offices, Model Model Model Model Model materials and faulty workmanship. representatives and distributors. For Pr Pr Pr Pr Pressur essur essur essur essure Range e Range e Range e Range e Range Honeywell’s standard product warranty application assistance, current Sensor T Sensor T Sensor T Sensor T Sensor Type ype ype ype ype applies unless agreed to otherwise by specifications, pricing or name of the Honeywell in writing; please refer to Excitation Excitation Excitation Excitation Excitation nearest Authorized Distributor, contact your order acknowledgement or consult your local sales office or: Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm your local sales office for specific E-mail: E-mail: E-mail: E-mail: E-mail: info.sc@honeywell.com Compensation Compensation Compensation Compensation Compensation warranty details. If warranted goods are Inter Inter Inter Inter Internet: net: net: net: net: www.honeywell.com/sensing returned to Honeywell during the period PRESSURE RANGE of coverage, Honeywell will repair or 01 01 0 01 01 1 = 0 psi to 5 psi Phone and Fax: Phone and Fax: Phone and Fax: Phone and Fax: Phone and Fax: replace, at its option, without charge 02 02 0 02 02 2 = 0 psi to 10 psi Asia Pacific +65 6355-2828 those items it finds defective. The The The The The 03 03 0 03 03 3 = 0 psi to 15 psi +65 6445-3033 Fax for for for for foregoing is buyer egoing is buyer egoing is buyer egoing is buyer egoing is buyer’’’’’s sole r s sole r s sole r s sole r s sole remedy and emedy and emedy and emedy and emedy and 05 05 0 05 05 5 = 0 psi to 25 psi Europe +44 (0) 1698 481481 is in lieu of all war is in lieu of all war is in lieu of all war is in lieu of all war is in lieu of all warranties, expr ranties, expr ranties, expr ranties, expr ranties, expressed essed essed essed essed 07 07 0 07 07 7 = 0 psi to 30 psi +44 (0) 1698 481676 Fax or implied, including those of or implied, including those of or implied, including those of or implied, including those of or implied, including those of Latin America +1-305-805-8188 SENSOR TYPE mer mer mer mer merchantability and fitness for a chantability and fitness for a chantability and fitness for a chantability and fitness for a chantability and fitness for a +1-305-883-8257 Fax G G G = Gauge Pressure G G par par par par particular purpose. In no event shall ticular purpose. In no event shall ticular purpose. In no event shall ticular purpose. In no event shall ticular purpose. In no event shall USA/Canada +1-800-537-6945 EXCITATION Honeywell be liable for Honeywell be liable for Honeywell be liable for Honeywell be liable for Honeywell be liable for +1-815-235-6847 L L L L L = 1.5 mA consequential, special, or indir consequential, special, or indir consequential, special, or indir consequential, special, or indir consequential, special, or indirect ect ect ect ect +1-815-235-6545 Fax K K K K K = 10 Vdc damages. damages. damages. damages. damages. DIAPHRAGM TYPE While we provide application assistance personally, through our D D D D D = Dimethyl Silicone literature and the Honeywell web site, it COMPENSATION is up to the customer to determine the N N N N N = Laser trimmed, normalized output suitability of the product in the ACCURACY GRADE application. Higher accuracy grades are available Specifications may change without as specials. notice. The information we supply is Custom configurations are available on believed to be accurate and reliable as request. of this printing. However, we assume no WARNING responsibility for its use. MISUSE OF DOCUMENTATION  The information presented in this product sheet is for reference only. WARNING Do not use this document as a PERSONAL INJURY product installation guide. DO NOT USE these products as safety  Complete installation, operation, and or emergency stop devices or in any maintenance information is provided other application where failure of the in the instructions supplied with product could result in personal injury. each product. Failur Failure to comply with these e to comply with these Failur Failur Failure to comply with these e to comply with these e to comply with these Failure to comply with these instr instr instructions could r uctions could r uctions could result in death or esult in death or esult in death or instr instructions could r uctions could result in death or esult in death or instructions could result in death or serious injur serious injur serious injury y y... serious injur serious injury y.. serious injury. Automation and Control Solutions Sensing and Control Honeywell 11 West Spring Street 008094-2-EN IL50 GLO Freeport, Illinois 61032, USA April 2005 www.honeywell.com Copyright 2003-2005 Honeywell International Inc.