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Universal SDI-12 Converter

Universal SDI-12 Converter



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Description

Universal SDI-12 Converter

5 Ports to accommodate a vast array of sensors: Highly accurate and stable, programmable input range, and supports low level 10 mV and high level 0-5V sensors


Feature

  • 5 Ports to accommodate a vast array of sensors:
  • 3 ports (AN1, AN2, AN3) exclusively for analog
  • 1 (DIN) exclusively for digital
  • 1 (AN4) for analog as well as logic level driven digital
  • Four analog inputs with:
  • Configurable – single-ended or differential voltage
  • Reference Voltage Output for ratiometric sensors (bridges, potentiometers)
  • 24-bit A/D converter
  • 0-5V input range
  • Programmable gain (1 to 128) user specified or automatic
  • Simultaneous 50Hz and 60Hz noise rejection
  • One digital input with selectable pull-up (or pull-down) to support switch-closure inputs
  • Additional digital input for 0-5 V signals (shared with analog channel 4)
  • Frequency measurement : 1 Hz to 8 kHz
  • Counts measurement
  • Programmable switch de-bounce times to prevent multiple counts on a single event
  • Programmable switched 5 volts and 12 volts output
  • Low power consumption : < 0.5 mA in standby mode
  • Programmable coefficients for conversion to engineering units such as degrees C.
  • Supports SDI-12 version 1.3
  • Configurable measurement commands
  • Non-volatile setup
  • DIN rail mountable with a real spring on the metal clip

Spesification

  • Input Voltage
8 – 16 VDC
  • Power Consumption
< 0.5mA quiescent, 6 mA typ. measuring (exclusive of current required by sensors)
  • Temperature Range
-40ºC to +65º
  • Communication Interfaces
SDI-12, SDI-12 Support V1.3 – will work with V1.0, V1.1, V1.2, & V1.3 data loggers
  • Analog Inputs
3 dedicated 1 programmable use. 0 – 5V input range
  • Programmable Gain
up to 128. Any 2 analog inputs can be measured as a true differential pair, not just the difference of two single ended readings.
  • 24 bit A/D converter
 
  • Programmable High Impedance Input Buffer
(0.05 V to 3.5V)
  • Analog Accuracy
+ 0.02% FS @ 25°C
  • Temperature Coefficient
+ 5 ppm/°C typ., + 10 ppm/°C max.
  • Shared Input
One analog input can be configured to measure digital inputs up to 8 kHz.
  • Dedicated Digital Input
(1) Up to 8 kHz. Programmable 20 k Ohm pull-up for switch closure inputs.
  • Input Filtering Digital Inputs
Support programmable de-bounce filtering
  • Reference Output
2.5V reference – 10 mA max
  • Switched Supply Output
Programmable 5V or switched supply voltage – 100 mA max 5V output + 5%
  • Switched Supply Drop
0.5V at 10 mA, 1.7 V at 100 mA
  • Mounting
DIN rail w/spring-loaded metal clip
  • Wiring Connections
Four pluggable terminal blocks
  • Device Dimensions
 
  •            Height
4.5 in. (11.5 cm)
  •            Length
4 in. (10.2 cm)
  •            Width
.7 in (1.8 cm)
  •            Weight
2 lbs. (0.9 kg)