15201A 25201A 35201A Uniaxial Biaxial Triaxial Digital Accelerometers User Configurable ±1 g to ±2 g 1A 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. An RS-485 to RS-232 adapter is available. Free, downloadable Instrument Configuration Utility (ICU) software is available online. 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 temperature 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 triaxial accelerometer with digital signal processing in approximately two cubic inches. uilt-In Power Supply Regulation B Unregulated DC power from +8.5 to +36 volts is all that is required to measure accelerations on all axes. Digital accelerometers are ideal for automotive applications as they survive both continuous reverse battery and load dump transients. MIL-STD-704A compatible. 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. They survive 3500 g powered and unpowered. Warranty Measurement Specialties’ digital accelerometers come with a three-year factory warranty. 15201A.25201A.35201A Digital Accelerometers precisionsensors.meas-spec.com Inertial Measurements Made Fast and Easy These Measurement Specialties digital accelerometers are complete, easy-touse, 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-8 and 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 Specifications for 15201A, 25201A and 35201A - improved specifications available upon request Ta = Tmin to Tmax; Acceleration = 0 g unless otherwise noted; within one year of calibration. Parameter Min Typical Max Units Conditions/Notes Accelerometers Full Scale Range Sensitivity Drift 25°C to Tmin or Tmax Zero g Drift 25°C to Tmin or Tmax ±20 mg Alignment ±1.5 degrees Transverse Sensitivity 0.25 % Nonlinearity 0.2 Frequency Response Noise Density Temperature Sensor Range Resolution Accuracy -55 0.25 ±2 Digital Signal Processor Internal Word Size Sensor Scan Rate 15,000 Analog Outputs Voltage Swing Impedance to Analog Nonlinearity 0.2 100 130 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 80 120 +80 +36 V V mA dB -80 V continuous, >38 V if ≤550 ms, duty <1% Continuous Temperature Range (Ta) -40 85 °C Terminal block Opt. T000 rated to -30°C Mass Shock Survival -1500 † ±2 ±0.3 0† g On each axis. User configurable % Percent of sensitivity at 25°C 1.25 % FSR 2100† Hz 110 Deviation from ideal axes Inherent sensor error, excluding misalignment Best fit straight line Lower filter cutoffs are user configurable μg/√Hz 125 ±3.5 °C °C °C Ta = -40 to 85°C 32 42,500 bits Hz User configurable, channels processed in parallel 4.5 220 0.15 V Ω % FSR 78 Excluding sensor nonlinearity DC grams +1500 g Any axis for 0.5 ms., powered or unpowered User configurable low-pass filter 3dB cutoff (number poles configurable) Mechanical Connections T000 0.167 0.354 [4,25] [9,00] 0.494 [12,55] 0.354 [9,00] 0.354 [9,00] 0.354 [9,00] 0.575 [14,60] 0.354 [9,00] 0.354 [9,00] 0.354 [9,00] 1 1.437 3 [36,50] T004 3 mm x 0,5 mm Thread 0.138 [3,50] Deep 16 Places on 2 Views 0.240 [6,10] Pin 1 2 3 4 5 6 7 Signal Analog1+Analog2+Analog3+ Signal- RS485- RS485+ Aux Wire Brown Red Orange Yellow Green Blue Violet 8 +Vs Grey 9 Gnd White 3 1 2 2 Spring and cable added with cable options 0.187 [4,76] 0.689 [17,50] 2.049 [52,05] Rear View Bottom View Dimensions in inches [mm] Ordering Information 35201A R002 T004 C002 Instrument 35201A 25201A 15201A Accelerometer R002 : ±2 g 2100 Hz Termination T004 : 4 ft. cable with DB9M T000 : Terminal block Tnnn : Custom length, nnn ft. Mounting adapters (sold separately) Calibration C001 : Standard room temp cal only C002 : C001 cal plus offset data over -40 to +85°C range 35170A Horizontal 15201A.25201A.35201A Digital Accelerometers precisionsensors.meas-spec.com 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) 35172A Vertical 2236 N. Cleveland-Massillon Road Akron OH 44333 PH : 330-659-3312 8/2/2013 www.meas-spec.com