RF communications type

TDMA, narrowband, FSK, 418 MHz

Remote (Transmitter) Node Size

flame retardant ABS plastic housing 4.3 by 2.4 by 1 inches, includes internal battery, power switch, and reverse SMA connector for 418 MHz antenna

Operating Temperature

-40 to +85 degrees Celsius in ABS plastic case, 150 degrees C maximum in custom epoxy package

Remote Node Addressing

16 bit unique address, communicated with RF data stream along with sensor data and checksum bytes

Transmission range

1/3 mile, line-of-sight, w/ optimum antennas at both transmitter and receive locations

Remote Node Update rate

software programmable, 5 minutes to 2 hours standard, faster rates (to 16 seconds minimum) available as factory programmed custom

Maximum number of nodes

from 100 (5 minute update) to 2400 (2 hour update) and acceptable collision rate of less than 10%

Number of channels/node

programmable, 3 differential or 5 single ended inputs

Analog to Digital Converter

16 bit resolution, sigma delta A/D converter

Data Format

serial RS-232 at 9600 baud

Programmable Gain

software selectable from 1 to 128

Programmable Filters

software selectable from 20 to 500 Hz

Instrumentation Amplifier

input CMRR 90 dB min, differential input common mode limit: 3 volts maximum; single ended input mode 0-1.5 volts maximum

Direct sensor input types

1) Type J thermocouple, cold junction compensated, maximum of five sensors
2) Piezoresistive full bridge transducers (pressure, load, torque), maximum of three sensors
3) Inductive half bridge transducers (DVRT's, half bridge LVDT's, eddy current probes), maximum of two sensors
4) Potentiometric sensors (rotary and linear pots, Force Sensing Resistors), maximum of five sensors
5) Semiconductor sensors (Hall effect probes, temperature sensors, MEMs sensors), maximum of five single ended output sensors

Battery type

one lithium-ion, AA size, 1.8 Amp-hour capacity

Remote Transmitter node power

3 volts DC, internally regulated, current draw in sleep mode less than 100 microamps, current draw in transmit mode (15 milliamps not including bridge excitation)

Remote Transmitter battery life

With two active thermocouple channels, 16 second update rate, battery life is approx. 4 months; w/ 30 minute update rate, battery life is approx. 2 years (5 years with software upgrade)

Receiver Type

narrowband FSK at 418 MHz

Number of Remote Nodes

up to 65,536 remote nodes with unique 16 bit addresses may communicate to a single multichannel receiver; with a 60 minute update rate, and with 10% collision rate, up to 1200 remote nodes may be processed by a single receiver

Receiver Size

ABS plastic, flame retardant, 6.7 by 8.3 by 2.4 inches

Receiver Operating Temperature

0 to 70 degrees Celsius

Receiver Power

5 vDC at 100 milliamps, UL app'vd 110 VAC to DC power supply included

Receiver Storage Capacity

128 kbytes standard, increased capacity on request (up to 512 kbytes)

Receiver Output

ethernet, data provided in XML (web compatible) file format, PC based software allows viewing from internet browser from any PC connected to the network