Model 87N UltraStable 316 SS Pressure Sensor High Performance, Small Profile 0-100 mV Output Temperature Compensated Absolute and Sealed Gage Hydraulic Controls Process Control Robotics Oceanography Refrigeration/Compressors Pressure Transmitters DESCRIPTION This is a micro machined piezoresistive silicon pressure sensor. It is designed for OEM applications where compatibility with corrosive media must be maintained. The sensor chip is mounted on a TO style header, which is resistance welded to a 316 stainless steel package, sealing a small volume of silicone oil between the diaphragm and the sensor chip. The ISO pressure housing utilizes the oil column to couple the piezoresisteve sensor to the isolation diaphragm. A thickfilm ceramic compensation board with laser trimmed resistors, and additional gain set resistor to normalize pressure sensitivity are an integral part of the sensor package. A variety of threaded process fittings are available. Fittings include standards like 1/4 and 1/8 NPT as well as custom process fittings. Electrical options include cable and connector. FEATURES Weldable, Optional Process Fittings ±0.25 Pressure Non-linearity ±1.0% Temperature Performance ±0.25 Interchangeable Span (provided by gain set resistor) Solid State Reliability Low Power DIMENSIONS w/PROCESS FITTING OPTION w/BACK END OPTIONS BASIC SENSING ELEMENT 'A' THREAD ¯.370/.373 [¯9.40/9.47] DIAPHRAGM, .001 [0.03] THICK WELD RING 'B' DIM .10 [2.6] .225 [5.7] .26 [6.7] .051 [1.30] MAX SPACER, %%c.50 [12.7] .02 [0.5] 6.00.25 [152.46.4] STANDARD RANGES EPOXY STRAIN RELIEF 3X .22 [5.6] .28 [7.1] RIBBON CABLE, 26 AWG (CONDUCTOR #1 w/RED STRIPE) .46 [11.6] 4X ¯.018 [0.46] Range psia psis 0 to 1000 ● ● 0 to 3000 ● ● 0 to 5000 ● ● +O -E .600 [15.2] (BALL SEAL) CONNECTOR, FEMALE, MOLEX P/N 50-57-9406 (OR EQUIVALENT) .100 [2.54] CENTERS .09 [2.2] SQ .53 [13.4] +E -O (LONG PIN) PAD/CNDTR #1 %%C.124 [3.15] B.C. %%C.545 [13.84] %%C.33 [8.3] 5X .050 [1.27] PROCESS FITTING DIMENSIONS COMP BOARD VIEW SHOWN w/o CABLE AND CONNECTOR FOR CLARITY 'C' DIM 'B' DIM 'C' DIM 1/8-27 NPT .59 [15.1] 5/8 [15.9] HEX 1/4-18 NPT .72 [18.4] 5/8 [15.9] HEX 1/4-19 BSP .77 [19.6] 3/4 [19.0] HEX 1/8-27 NPT .75 [19.1] 7/8 [22.2] HEX 1/4-18 NPT .88 [22.2] 7/8 [22.2] HEX 7/16-20 UNF .71 [18.1] 7/8 [22.2] HEX 'A' DIM %%C.550 MAX [%%c13.97] ALL DIMENSIONS ARE IN INCHES [mm]. ALL PROCESS WETTED PARTS ARE 316 SERIES STAINLESS STEEL. VIEW SHOWN w/o CABLE AND CONNECTOR FOR CLARITY 1-72 ISO – Wide Temperature Range Model 87N UltraStable 316 SS Pressure Sensor PERFORMANCE SPECIFICATIONS All parameters measured at 1.5mA drive and at 25°C, after 10 second warm up, unless otherwise specified. Unless specifically indicated, only those parameters indicated as tested are verified on each part. Parameters are specified for the compensation version only. PARAMETERS MIN TYP MAX UNITS NOTES Full Scale Output Span 75 100 150 mV 1 Zero Offset -1 0 1 mV 0.25 % Span Pressure Non Linearity -0.25 Pressure Hysteresis 50 2750 2 µV Ω Input Resistance 2000 Output Resistance 4000 25000 4000 Ω Temp. Error - Span -0.75 +0.75 % Span 3 Temp. Error - Zero -0.75 +0.75 % Span 3 Thermal Hysteresis - Span 0.05 % Span 3 Thermal Hysteresis - Zero 0.05 % Span 3 Supply Current 0.5 Output Load Resistance Insulation Resistance (50 VDC) 1.5 2.0 mA 5 MΩ 4 50 MΩ 5 Compensation Operating Temperature –20°C to +85°C 6 Operating Temperature Range –40°C to +125°C 6 Storage Temperature Range –50°C to +125°C 6 Media - Pressure Port Liquids and Gases compatible with 316L Stainless Steel. Media - Reference Port Liquids and Gases. Compatible with Silicon, Pyrex, Gold, Fluorosilicone Rubber and 316L Stainless Steel. Weight 11 g 7 Notes 1. All 3000 psi and 5000 psi parts are tested at 2500 psi. 5. Between case and sensing element. 2. Best fit straight line. 6. 3. Over temperature range -20°C to +85°C, % span, with respect to +25°C. Maximum temperature range for product with standard cable and connector is –20°C to +105°C. 7. Weight depends upon configuration (cable, connector, pressure fitting). 4. Load resistance to reduce measurement errors due to output loading. ORDERING INFORMATION APPLICATION SCHEMATIC N CONNECTIONS PAD NO. / CABLE FUNCTION 1 +OUT 2 -EX 3 +EX 4 -OUT 5 GAIN 6 GAIN October 2001 ISO – Wide Temperature Range Feel free to contact customer service with any questions at Toll free 1(800)745-8008; Phone (757)766-1500; Fax (757)766-4297 1-73