^

The unit

Zapisovalnik podatkov DL844

The unit can read up to 8 analog voltages and 4 digital channels and store data to an SD card or output it to RS-485 port. 4 current sources are provided to bias sensors connected to the datalogger. Data can be time-stamped with internal battery-backed clock. The FAT formatted card can also be read from RS-485, (RS-232) or USB port. Configuration can be stored on the card or transferred through RS-485. Various supply options are available including internal rechargeable battery.

Brochure

User Manual

^

Basic specifications

Analog inputs

  • number: 8 single-ended / 4 differencial (any combination possible)
  • scanning rate: up to 1 S/s
  • resolution: 24 bits
  • absolute input range: 0...3 V
  • evaluation: Platinum RTDs, thermocouples

Current source outputs

  • number: 4
  • current: 1 mA (other value on request)

Digital inputs

  • number: 4
  • protocol supported: 1-wire temperature sensors

Output voltages

  • 5 V, 3,3 V: 100 mA / 500 mA
  • reference output: 2,5 V

Data storage

  • medium: SD card up to 2 GB
  • file system: FAT12, FAT16 or FAT32
  • data format: comma separated values (CSV)

Interfaces

  • USB: Mass Storage Access to SD card
  • RS-232
  • RS-485

Power supply

  • external: 10...60 V
  • battery (internal): Li-ion 7.4 V 2.2 Ah (option for external)
  • options: different input voltage range, MPP tracking, charging from USB

Dimensions

  • size: 190 x 140 x 30 mm3
  • weight: 420 g (with Li-ion battery)
^

Contacts and inquiry

Boštjan Glažar, e-mail: bostjan.glazar@fe.uni-lj.si, phone: +386 1 4768 723

 

Mail form