23203B 0.167 [4,25] 0.354 [9,00] Wide Input Voltage Biaxial Accelerometer 0.099 [2,51] 0.323 [8,20] 0.128 [3,25] Dimensions in inches [mm] 0.354 [9,00] 0.542 [13,75] 1.437 [36,50] 0.354 [9,00] 1 2 3 4 5 6 7 8 9 0.575 [14,60] 1 2 2 1.180 [29,97] Rear View 6 7 8 9 0.240 [6,10] 1 0.689 [17,50] Terminal Block Spring and cable added with Option T001 0.147 [3,73] Thru (2) Places 1.000 [25,40] Bottom View Mounting Instructions Use two 3,0 x 0,5 mm thread machine screws to attach to the bottom or rear 23203B mount faces. Be careful not to bottom screws in tapped holes as this can strip threads. Alternatively, the two thru holes allow two #6 or two 3,5 mm screws to be used to mount the 23203B from the top. ➤ A light film of oil or silicone grease can be used to enhance contact between mounting surfaces. ➤ A locking compound should be used on all threads to prevent screws loosening due to vibrations. ➤ INSTRUMENTS Summit Instruments, Inc. 2 2 3 6 N . C l eve l a n d - M a s s i l l o n R d . A k ro n , O h i o 4 4 3 3 3 - 1 2 5 5 U S A ( 3 3 0 ) 6 5 9 - 3 3 1 2 FA X : ( 3 3 0 ) 6 5 9 - 3 2 8 6 How to Use the 23203B Connect a +8 to +30V DC power source to pins 8 and 9. Connect a differential or floating input A/D converter to each signal and signal common pins (pins 5 and 6 for Accelerometer 1, pins 1 and 2 for Accelerometer 2, and pins 3 and 2 for Temperature). For best results use a converter with an input impedance greater than 1MΩ and common mode rejection ratio greater than 60dB. Single-ended converters are not recommended but if used, leave Signal Common unconnected to eliminate ground loops. A positive acceleration (labeled on the accelerometer cover) causes a positive change on the corresponding output. ➤ Keep cable lengths between the accelerometer and A/D converter as short as practical. Use shielded twisted pair wiring, especially near electric motors or other noise sources. ➤ As a rule of thumb, sample frequency should be at least 10 times the signal bandwidth when linear interpolation is used for signal reconstruction. Built-in or external low-pass filtering can be used to lower the noise floor and eliminate spurious peak measurements from short-duration shock impulses with insignificant energy content. ➤ A logic 1 on the self-test input will add 0.1 to 0.5V* to both accelerometer outputs. An output that changes less than +0.1V* or more than +0.5V* indicates a defective channel, shorted pin, or broken wire. The self-test signal is approximate and should not be used for calibration. If the self-test feature will not be used, pin 7 should be connected to pin 9. ➤ ➤ * Scale linearly with range option Rnnn. Male D-Shell Connector Accelerometer Connections Pin SUMMIT 1 2 3 4 5 3 mm x 0,5 mm Thread 0.138 [3,50] Deep (4) Places Specifications* Min Typical Max Range Measurement Full Scale Shock survival, powered Shock survival, unpowered Sensitivity At 25° C, ±5 g FSR Drift TMIN to TMAX Zero G Bias Level At 25° C Drift TMIN to TMAX Alignment Deviation from ideal Transverse Sensitivity Nonlinearity Upper Cutoff Frequency Noise Density Self Test Input Impedance Temperature Sensor Sensitivity +25°C Bias Level Power Supply (VS ) Input voltage Input current DC rejection ratio Outputs Output voltage swing Capacitive drive capability Temperature Range * Data subject to change without notice. ±1 -500 -1000 ±5 +500 +1000 450 ±0.5 3.125 ±0.2 ±2.0 0.25 0.2 4.6 30 0.225 50 ±3.0 10,000 0.325 8 2.4 2.6 +8 80 0.05 1000 -40 † 6 120 g g g mV/g % † 1.875 Units V g degrees % % FSR Hz mg/√Hz kΩ mV/°K V +30 9 V mA dB 4.95 V pF °C +85 Scale linearly with range option Rnnn. 1 2 3 4 5 6 7 8 9 Description Cable Wire Accelerometer 2 Signal Common Temperature +5V Output Accelerometer 1 Signal Common Self Test Power Ground Brown Red Orange Yellow Green Blue Violet Grey White* }twisted pair }twisted pair }twisted pair }twisted pair * connected to braided shield at D-Shell Pin Three - Year Limited Warranty Summit Instruments, Inc. (SI) warrants this product against defects in materials and workmanship for a period of three years from date of shipment. During the warranty period, SI will, at its option, either repair or replace products which prove to be defective. Exclusions This warranty does not apply to defects or damage resulting from: • Improper installation or maintenance. • Customer supplied software or interfacing. • Unauthorized modification or misuse. • Operation outside of the product specifications. Limitations The warranty set forth above is exclusive and no other warranty, whether written or oral, is expressed or implied. Summit Instruments specifically disclaims the implied warranties of merchantability and fitness for a particular purpose. Some jurisdictions do not allow limitations on how long an implied warranty lasts, so the above limitation or exclusion may not apply to you. However, any implied warranty of merchantability or fitness is limited to the one-year duration of this written warranty. Warranty Service To obtain service during the warranty period products must be returned, transportation prepaid, to SI. 23203B-D001 Rev. 06/05