15201A 25201A Uniaxial Specifications* 35201A Biaxial Triaxial Digital Accelerometer User Configurable ±1 g to ±2 g 1A Measurement Specialties, Inc. 2236 N. Cleveland-Massillon Rd. Akron, Ohio 44333-1255 USA (330) 659-3312 www.meas-spec.com precisionsensors.meas-spec.com Parameter Min Typical Accelerometers Full Scale Range Max ±2 g Sensitivity Drift 25°C to Tmin or Tmax ±0.3 Zero g Drift 25°C to Tmin or Tmax Alignment ±20 mg ±1.5 degrees Transverse Sensitivity 0.25 Nonlinearity 0.2 Frequency Response 0† 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 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 Temperature Range (Ta) -40 85 °C Mass Shock Survival -3500 % % 1.25 % FSR 2100† Hz 110 μg/√Hz ±3.5 125 °C °C °C 32 42,500 bits Hz 4.5 220 0.15 78 Three-Year Limited Warranty Units V Ω % FSR grams +3500 Measurement Specialties, Inc. warrants this product against defects in materials and workmanship for a period of three years from date of shipment. During the warranty period, Measurement Specialties 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. Measurement Specialties 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 three-year duration of this written warranty. Warranty Service To obtain service during the warranty period, products must be returned, transportation prepaid, to Measurement Specialties. g Data subject to change without notice *within one year of calibration †User configurable low-pass filter 3 dB cutoff (number poles configurable) 15201A/25201A/35201A Rev. 8/16/13 Connection to a PC using MEAS Adapters Mounting Instructions Terminal Block Male D-Shell Connector Accelerometer Connections Pin Description Cable Wire 1 2 3 4 5 6 7 8 9 Analog Output 1+ Analog Output 2+ Analog Output 3+ Signal - RS485- RS485+ Aux +Vs (Power) Ground Brown Red Orange Yellow Green Blue Violet Grey White* *connected to braided shield at D-shell pin CAUTION } } } } ►Use ► two 3.0 mm x 0.5 mm thread machine screws to attach to the bottom or rear 15201A/25201A/35201A mount faces [recommended torque 5 lbf-in (0.56 N.m)]. Be careful not to bottom screws in tapped holes as this can strip threads. ►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. twisted pair twisted pair 0.167 0.354 [4,25] [9,00] 0.494 [12,55] 0.354 [9,00] 0.354 [9,00] 0.354 [9,00] 3 mm x 0,5 mm Thread 0.138 [3,50] Deep 16 Places on 2 Views twisted pair twisted pair Improper wiring, particularly Power, may cause permanent damage and void the warranty. Pins other than +Vs should not exceed 5 V. 0.354 [9,00] 0.354 [9,00] 0.354 [9,00] 0.575 [14,60] X 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 0.187 [4,76] Spring and cable added with cable options Dimensions in inches [mm] Connect a 15201A/25201A/35201A to a 35250A, and connect a PC COM port to the other side of the 35250A using the cable provided. (If connecting to a PC with only a USB port, an RS232 to USB cable will be needed). Plug power supply into wall and plug into power jack on side of 35250A. Accelerometer should then be ready for use. Power Supply 120VAC 1.3mm Plug/Jack 15201A 25201A 35201A Accelerometer 9 Pin D-Subs 35250A Adapter Optional Analog Monitoring Port COM Port Cable 9 Pin D-Subs 9 Pin D-Subs PC How to Use the 15201A / 25201A / 35201A as an Analog Sensor ►If ► a Measurement Specialties 35250A PC Interface Adapter is available, connect its sensor connector to the 15201A/25201A/35201A, apply power to the 35250A, and connect a computer to the 35250A RS232 connector. A positive acceleration (labeled on the accelerometer cover) causes a change on the corresponding output. ►If ► a 35250A is not available, connect a +8.5 to 36V DC power source to +Vs. Connect power source ground to the PwrGnd pin. Connect a computer RS485 interface to the two RS485 pins on the 15201A/25201A/35201A. ►Optionally, ► connect a voltmeter or other instrument to each 15201A/25201A/35201A Analog Output and SigGnd. For best results, use a converter with an input impedance greater than 1MΩ. ►Keep ► cable lengths between an analog output and an instrument as short as practical. Use shielded twisted pair wiring, especially near electric motors or other noise sources. ►Download ► Instrument Configuration Utility (ICU) software from precisionsensors.meas-spec.com and use it to configure the 15201A/25201A/35201A. When transmitting High Speed Data to a PC, sample frequency should be at least 10 times the filter bandwidth when linear interpolation is used for signal reconstruction. Built-in 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. Digital Wiring Example Typical Settings Changed with ICU ►Accelerometer ► ranges (Range Hi and Range Lo) ►Low-pass ► filter settings (Filter 3 dB Cutoff) ►Resolution ► of high-speed data (IRIG Word Bits). Eight (8) bit data can be set to increase data transfer rates. ►Temperature ► and accelerometer Channel Units. Each channel can be configured to measure in units suitable for your application. ►Inversion ► of the sensor channels (Invert). Each channel output can be inverted for maximum flexibility in your measurements. ►The ► telemetry Bit Rate may be adjusted according to how fast measurements need to take place. RS232 hardware limits bit rate to 115kb. Retrieving the Calibration Certificate 1.Connect to the unit with ICU. 2.At the bottom of the Configure window, click Reports. 3.A separate window opens with Report selections at the bottom. Select the Calibration check box. The certificate will then be displayed. Typical Direct Wiring PWR GND 8.5 - 36VDC SELF TEST (OPTIONAL) RS485 HI RS485 LO WHT 9 GRY 8 VIO 7 BLU 6 GRN 5 GND 34100A +VS AUX RS485+ RS485- 8 34100A 1+ +VS 9 PWR GND 7 AUX 1 2+ 2 3+ 3 SIG 4 GND CH1+ CH1CH2+ CH2CH3+ CH3- ►Start ► ICU. Use About/Setup to select your COM Port and confirm the data directory. Select Configuration as the Program Function and press OK. ►Press ► the Configuration button. ICU scans for any instruments attached to the COM Port. If an instrument is found, ICU connects and reads the instrument configuration. ►The ► 15201A/25201A/35201A comes ready from the factory. If your application requires changes, use the Main tab to change the telemetry and the channel tabs to edit each channel. For each channel, check the Range Hi and Range Lo and the Filter 3dB Cutoff. If changes are made, you must press the Write Values to Instrument button. The password as shipped from the factory is “si”. ►Use ► the High Speed Acquire button to collect and save data to disk. Items Provided in 35250AK0 PC Interface Kit -35250A PC Interface Adapter -9 Pin D-sub Female-to-Female Cable -9 Volt DC Power Supply Notes: Analog Wiring Example SYSTEM 8.5 - 36VDC POWER PWR GND AND SELF TEST CONTROL (OPTIONAL) Installing and Using ICU ►First, ► uninstall any previous versions of Instrument Configuration Utility (ICU) that may be installed, then download ICU software from precisionsensors.meas-spec.com. Run Setup_ICU.exe to install ICU. MEASURING EQUIPMENT w/DIFFERENTIAL INPUTS