PRELIMINARY 15207A 25207A 35207A Uniaxial Digital Accelerometers User Configurable to ±70 g Wide Bandwidth to 10 kHz Biaxial Triaxial 7A Technical Data* Features and Benefits User Configurable Settings The analog/digital output range and low-pass filter of each digital accelerometer axis can be set via a built-in RS-485 interface using a free, downloadable Instrument Configuration Utility (ICU). An RS-485 to RS-232 adapter is available. RS-485 Serial and Analog Outputs Calibrated, ranged and filtered data can be streamed out at up to 3 Mbit/ sec via RS-485. Analog output of up to three calibrated, ranged and filtered channels are provided for compatibility with existing systems. High Accuracy and Linearity over Wide Temperature Range Accelerometer accuracy is improved by minimizing variations due to temperature and aging effects. Each axial sensor has been tested and compensated over the -40 to +85°C temperature range. Built-in Calibration Calibration data for each sensor is maintained in the accelerometer. All digital data output is fully calibrated and easily converted to user specified engineering units. Self-Test Self-test commands help verify channel integrity and wiring connections. Small Size Complete conditioned uniaxial, biaxial and triaxial accelerometers with digital signal processing in just two cubic inches. uilt-In Power Supply Regulation B Continuous unregulated DC power from +8.5 to +36 volts is all that is required to measure accelerations on all axes. Reverse power voltages of up to -80 V can be withstood indefinitely. Transients of +80 V for 550 ms compatible with MIL-STD-704A can be withstood with full operation. Easy Installation with Minimal Wiring Requirements A built-in terminal block or cable with 9-pin connector simplifies wiring. Wiring can be minimized by daisy-chaining the two multidrop RS-485 pins on up to 30 digital accelerometers. Tapped holes on bottom and back simplify horizontal or vertical mounting. Suitable for Harsh Environments These accelerometers are robust and can be used in harsh environments, surviving 1500 g powered or unpowered. Warranty Measurement Specialties digital accelerometers come with a three-year factory warranty. 15207A.25207A.35207A Digital Accelerometers precisionsensors.meas-spec.com Inertial Measurements Made Fast and Easy These Measurement Specialties digital accelerometers are complete, easyto-use, user-configurable sensors containing one to three accelerometers, a temperature sensor, signal processor, RS-485 interface and three analog outputs in a small, easy-to-install package. All channels are sampled simultaneously to avoid data skewing. The digital signal processor takes 16-bit samples, filters, ranges, and calibration compensates at up to 42,500 samples/sec/channel. Digital data can be streamed out at up to 3 Mbit/sec. The output range, filter frequency and calibration of each channel, as well as telemetry configuration, can be set by the user via the RS-485 command processor. CRC-16 error checking is used to ensure command and data integrity. The built-in temperature sensor can be used by critical applications to correct for any residual temperature effects. 2236 N. Cleveland-Massillon Road Akron OH 44333 PH : 330-659-3312 8/2/2013 www.meas-spec.com PRELIMINARY Specifications for 15207A, 25207A and 35207A - improved specifications available upon request Ta = Tmin to Tmax; acceleration = 0 g unless otherwise noted; within one year of calibration. Parameter Min Typical Accelerometer Full Scale Range Sensitivity Drift 25°C to Tmin or Tmax ±0.5 Zero g Drift 25°C to Tmin or Tmax Alignment Transverse Sensitivity Max Units ±70 g Lower ranges are user configurable % Percent of sensitivity at 25°C ±1.5 g Some units to 3 g ±3.0 degrees 0.25 % Nonlinearity 0.2 Frequency Response Noise Density Temperature Sensor Range Resolution Accuracy -55 0.25 ±2 Digital Signal Processor Sensor Scan Rate Analog Outputs Voltage Swing Impedance to Analog Nonlinearity 0.25 100 130 Digital Output Word Size 16 bits Filtered, gained and calibration corrected Power Supply (Vs) Input Voltage Limits Input Voltage - Operating Input Current Rejection Ratio -80 +8.5 50 >120 +80 +36 V V mA dB -80 V continuous, >38 V if <550 ms, duty <1% Temperature Range (Ta) -40 +85 °C Terminal block Option T000 rated to -30°C Mass 0† 2 % FSR 10† kHz 2.5 125 0.354 [9,00] 0.354 [9,00] 0.354 [9,00] 0.354 [9,00] 0.354 [9,00] 1 1.437 3 [36,50] 0.240 [6,10] 3 1 2 2 0.689 [17,50] 2.049 [52,05] Rear View Bottom View Spring and cable added with cable options 0.187 [4,76] Lower filter cutoffs are user configurable Ta = - 40 to +85°C 42,500 Hz User configurable, channels processed in parallel V Ω % FSR Configurable to sensor Iout = 1 mA max Excluding sensor nonlinearity DC grams 3 mm x 0,5 mm Thread 0.138 [3,50] Deep 16 Places on 2 Views 0.575 [14,60] 0.354 [9,00] Best fit straight line ±3 4.75 220 0.15 0.494 [12,55] Inherent sensor error, excluding misalignment °C °C °C 78 Mechanical 0.167 0.354 [4,25] [9,00] Deviation from ideal axes mg/√Hz Shock Survival ±1500 ±1500 †User configurable low-pass filter 3dB cutoff (number poles configurable) Conditions/Notes Dimensions in inches [mm] g Any axis for 0.5 ms, powered or unpowered Connections T000 T004 Pin 1 2 3 4 5 6 7 Signal Analog1+Analog2+Analog3+ Signal - RS485- RS485+ Aux Wire Brown Red Orange Yellow Green Blue Violet 35207A R070 T004 C002 Instrument 35207A 25207A 15207A Termination T004 : 4 ft. cable with DB9M T000 : Terminal Block Tnnn : Custom length, nnn ft. 35170A Horizontal 15207A.25207A.35207A Digital Accelerometers precisionsensors.meas-spec.com 35172A Vertical 9 Gnd White Ordering Information Accelerometer R070 : ±70g 10kHz Mounting adapters (sold separately) 8 +Vs Grey Calibration C001 : Standard room temp cal only C002 : C001 cal plus offset data over -40 to +85°C range 2236 N. Cleveland-Massillon Road Akron OH 44333 PH : 330-659-3312 K11 Adapter 0 : None 1 : 35170A Horizontal mounting adapter 3 : 35172A Vertical mounting adapter Interface kit 0 : None 1 : Interface kit with US power supply 2 : Interface kit with int’l power supply 3 : Interface kit for terminal block (US) 4 : Interface kit for terminal block (int’l) 8/2/2013 www.meas-spec.com