Input channels

4 full differential wheatstone bridge input channels, 350 Ω resistance or higher (with optional bridge completion), internal triaxial accelerometer, and internal temperature sensor

Environmental Validation (MIL-STD)

passed evaluation testing for MIL-STD-810F (temperature, vibration, shock, & humidity)

EMI/EMC Validation (MIL-STD)

passed evaluation testing for MIL-STD-461F (RE102 Radiated Emissions and RS103 Radiated Susceptibility)

Strain Inputs

Anti-aliasing filter bw

-3 dB cutoff at 500 Hz (factory adjustable)

Measurement Accuracy

± 0.1% full scale typical

Resolution

1 microstrain typical for 4 wire full bridge strain gauge (when used inaccordance with MicroStrain® recommendations)

DC bridge excitation

+3 volts DC at 50 mA maximum (pulsed to sensors for sample rates of 100 Hz and below to conserve power)

Programmable gain

software programmable: 1 to 512 Hz

Programmable offset

software programmable for remote bridge balance

ADC resolution

successive approximation type, 16 bit resolution

Accelerometer and Temperature Sensor

Accelerometer type

internal triaxial MEMS

Range

±16 g

Resolution

4 mg

Temperature sensor

typical accuracy ±2 ˚C (at 25 ˚C), ± 4 ˚C accuracy across -40 ˚C to 85 ˚C operating range

General

Data storage capacity

2 megabytes (approximately 1,000,000 data points)

Synchronized sample mode

supports multiple synchronized nodes on single RF channel , with sample rates from 1 Hz to 512 Hz

Synchronization between nodes

± 32 µsec @ 10 second beacon interval

Sample rate stability

± 3.5 ppm

Wireless shunt calibration

internal shunt calibration resistor 499 KΩ

Radio frequency (RF) transceiver carrier

2.4 GHz direct sequence spread spectrum, license free worldwide (2.405 to 2.480 GHz) – up to 16 channels, radiated power programmable from 0 dBm (1 mW) to 20 dBm (100 mW)

RF data packet standard

IEEE 802.15.4, open communication architecture

RF data downloading

8 minutes to download full memory

Range for bi-directional RF link

2 km line-of-sight in extended range mode; 70 m in standard range mode

Internal battery

replaceable 3.7 volt 1,700 mAh TL-5935 1/6 D-cell battery

Power consumption*

32 HZ 3 channels, no duty cycling 960uA (3.46mW)

256 Hz 3 channels, no duty cycling 10.6mA (38.16mW)

256 Hz 1 channel, no duty cycling 4.0mA (14.4mW)

Operating temperature

-40 ˚C to +85 ˚C

Maximum acceleration Limit

500 g standard (high g option available)

Dimensions

101 mm x 46 mm x 26 mm (enclosure without antenna) for dimensional print go to www.microstrain.com

Weight

150 g (including battery, electronics, enclosure, and potting material); 17 g (circuit board assembly only)

Enclosure material

black polycarbonate

Environmental Protection

Electronics conformal coated and potted with sealed battery replacement cap.

Software

Node Commander® Windows XP/Vista/7 compatible

Compatible base stations

USB, RS-232, Analog, WSDA-Base, WSDA, WSDA-MIL

FCC ID

pending

IC ID

pending