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Campbell Scientific’s Archer-OBS is a small handheld device with 256 MB of internal storage. You can carry the Archer-OBS to the field and display OBS-3A measurements, run surveys, and set up the OBS-3A for extended deployment. The Archer-OBS includes a Juniper Systems’ Archer Field PC and Campbell Scientific’s OBS-Mobile software. (OBS® is a registered trademark of Campbell Scientific.)

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Benefits and Features

  • Ultra-rugged, ensuring that your data is safe—even in extreme environments
  • Used on site to set up the OBS-3A and to collect, display, and graph its data
  • Operates in temperatures as cold as -30°C or as hot as 50°C
  • Transfers OBS field data to office PC
  • Long battery life—up to 20 hours
  • Completely sealed against dust and water
  • Easy-to-grip overmolding
  • Large, tactile, backlit keys


Detailed Description

The ultrarugged Archer Field PC ensures that your data is safe—even in extreme environments. With an IP67 sealed rating, it is completely sealed against dust and water. And it won’t break down or fail in extreme temperatures—it is made to operate in temperatures as cold as -30°C or as hot as 50°C.

OBS-Mobile is versatile, easy-to-use software that allows the OBS-3A Turbidity and Temperature Monitoring System to communicate with the Archer Field PC. It supports most functions of the standard OBS software. OBS-Mobile software lets you:

  • Configure and run a manual survey or profile
  • Configure and initiate data logging for a long-term deployment
  • Collect data from the OBS-3A system
  • View real-time measurements; measurements are updated every two seconds
  • Graph OBS-3A data
  • Transfer data collected from the OBS-3A to an office PC

Archer-OBS Components

  • Archer Field PC with 128 MB of RAM and 256 MB of internal data storage
  • Hand Strap
  • International Wall Charger Kit (includes wall charger and USA, Euro, UK, and Australian plug adapters)
  • USB Cable (mini to full)
  • Full-sized Captured Stylus
  • Microsoft® Getting Started CD
  • Documentation CD with User Manual
  • Premium Screen Protectors
  • Connector Protector
  • Campbell Scientific software CD with OBS-Mobile
  • Software CD with Excel Mobile, Word Mobile, Power Point Mobile

(OBS® is a registered trademark of Campbell Scientific.)


Construction Magnesium case with scratch-resistant powder coat, and easy-to-grip, impact-absorbing overmold
Processor 520 Mhz, Intel XScale PXA270
Archer Field PC OS Microsoft Windows Mobile 6.1
Memory 128 MB RAM (256 MB of internal data storage)
Display Description High Visibility 1/4 VGA TFT Color
Certifications and Standards FCC Class B; CE Mark; EN60950; RoHS Compliant; FM Approved Class I, Div 2
IP Standard IP67 waterproof and dustproof
Shockproof Survives multiple drops from 1.5 m (5 ft) onto concrete.
Environmental Testing Standards MIL-STD810F for water, humidity, sand and dust, vibration, altitude, shock, temperature
Operating Temperature -30° to +55°C (Minimum temperature for Bluetooth communication is -20°C.)
Storage Temperature -30° to +60°C
Dimensions 16.5 x 8.9 x 4.3 cm (6.5 x 3.5 x 1.7 in.)
Weight 482 g (17 oz)


Additional Features LED backlit keys
Available Buttons Start, four-way directional, enter applications manager, power, and context menu
(Key functions can be user defined.)


Serial RS-232C 9-pin sub D connector with 5 Vdc power on DTR pin
Power Jack 12 Vdc @ 800 mA power in (10 to 18 V unregulated)

Memory Card Slots

CompactFlash (CF) One type-1 or type-2 CF card fits into the CF card slot. Use only industrial-grade CF cards with a storage capacity of ≤ 2 GB.
Secure Digital (SD) One SD card or Secure Digital Input Output (SDIO) card fits into the SD card slot.


Type Intelligent 3900 mAhr Li-Ion
Expected Life Operates for more than 20 hours on one charge.
Time to Recharge Charges in 4 to 6 hours.


The Archer-OBS is used with our OBS-3A Turbidity & Temperature Monitoring System.

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