Bench Mark US - Surveying equipment

(1.0) Hemisphere S631 Base and Rover RTK GNSS w/ Hemisphere CW400 and FieldGenius

(11 customer reviews)


The Hemisphere S631 is the latest receiver from Hemisphere GNSS. Featuring a board for wide selection of constellations and signals, and the 60° tilt sensor, this receiver was meant to be adaptable to your needs. Tried and true, this is the best-performing reciever on the market.


  • Triple Frequency Multi Constellation Receiver
  • 1.3 kg with Batteries
  • Internal 1 Watt Satel Radio – 10 km Range
  • LTE Internal Cell Modem
  • 9 Hour Hot Swappable Batteries


  • Hemisphere S631 GNSS Base Receiver
  • Hemisphere S631 GNSS Rover Receiver
  • UHF Antennas
  • 4x Batteries
  • P9 Windows Mobile Data Collector
  • MicroSurvey’s FieldGenius 10
  • Tripod
  • Adjustable 2m Pole


Hemisphere S631

The Hemisphere S631 is the latest and greatest GNSS receiver from Hemisphere, capitalizing on the best of the S320 and S321+: the compact, hot swappable batteries from the S320 and the robust RTK engine and great Satel radios from the S321+. But its great features don’t stop there; the S631 is known for its tilt shot ability, P40 board, plethora of constellations, performance under canopy, and impressive range. The Hemisphere S631’s reputation is gaining popularity in the market, competing even with well-established GNSS brands.


Tilt Surveying

There is nothing more practical and versatile than an internal tilt sensor- and with the S631’s design, you can get up to 60° of tilt, with 2 cm of compensation at 30° or 5 cm at 60°. Gone are the struggles of pole-levelling!

Better Performance

Because of its design with the Phantom P40 board, the Hemisphere S631 has access to an array of constellations and signals, allowing for performance and variety in multi-path environments. Some constellations and signals include: GPS; L1CA, L1P, L1C, L2P, L2C, L5, GLONASS; G1, G2, G3, P1, P2, Beidou; B1i, B2i, B3i, B10C, B2A, B2B, ACEBOC, GALILEO; E1BC, E5a, E5b, E6BC, ALTBOC, QZSS; L1CA, L2C, L5, L1C, LEX, IRNSS; L5 and Atlas.

Surveying Made Easy

Hemisphere’s latest design has solved common frustrations with several solutions. Because of its internal cell modem and powerful 1 Watt internal radio, the S631 lets you easily choose the communication settings that meet the requirements for your job. There is no need to worry about battery life with the S631- its batteries have enough power to go for 9 hours, and the hot swappable batteries mean no delay and no reconfiguration. This rugged receiver’s magnesium alloy enclosure can survive even a 2 m pole drop, and is completely dust and waterproof.


Key S631 Features

  • Multi-Frequency, Multi Constellation Base Rover Capability
  • GPS, GLONASS, Galileo, Beidou, QZSS, IRNSS, SBAS, Atlas
  • Athena RTK Engine
  • Internal Wifi, Bluetooth, Cellular and UHF
  • Over GNSS Channels
  • Hot Swappable Batteries with 9 Hours of Life on Single Charge
  • 8 GB of Internal Storage
  • Static Capable


Hemisphere CW400

The IronView CW400 is Hemisphere GNSS’ next- generation professional grade GNSS data collector. The rugged handheld includes a high-sensitivity GNSS antenna and performs well in challenging environments, such as forests and urban areas.


The CW400 has the storage space for large data and faster background maps when paired with high-capacity Micro-SD cards. Bluetooth and wireless LAN enable the CW400 for easy network and device connection.


The CW400 is a rugged hand-held and meets IP65 standard, meaning it is both dust and water resistant. It comes equipped with a 3.7” industrial high contrast, sunlight-readable touchscreen display for bright conditions. Two batteries provide up to 14 hours of use allowing GNSS data collection for a full working day without the need to recharge.

  • IP65 Certified
  •  Sunlight readable display
  •  Full communication set
  •  Built-in GNSS receiver

11 reviews for (1.0) Hemisphere S631 Base and Rover RTK GNSS w/ Hemisphere CW400 and FieldGenius

  1. Cam Christianson

    The S631 really feels like an upgrade over the last generation. It feels better built, and the in-foliage and tilt performance is really convenient.

  2. Reid Ostenberg

    The radio range of the S631 has been blowng me away. I haven’t even had to use my external radio. When paired with FieldGeniu, I get an easy-to-use solution that has all of the tools I need.

  3. Allan Andres

    The tilt feature is wonderful, and the S631 works so well under canopy! I was a bit worried about moving to FieldGenius, but it is easy to use once I had it figured out.

  4. Sid Sandback

    We love the tilt capacity on the S631, and we cannot say enough about the Bench-Mark support. We also love the Graphical Layout in FieldGenius, it’s so easy to use.

  5. Tom Mehdi

    The S631 has been great, with tilt we are a lot faster, and the in-canopy performance is making a big difference. Once I got used to FieldGenius, i found it to be way faster.

  6. Shamus McGee

    We love the fact that the S631 has a 10 km base-to-rover range, and that they will fix any constellation. FieldGenius has to been the easiest and most user-friendly surveying software we have ever used.

  7. David Harris

    What I really like about the S631 is that I can get a fix where no other GPS unit can go. With FieldGenius, I keep finding new features that are useful for everyday surveying.

  8. Rudi van der Merwe

    The S631 gives us consistent and accurate results in mountainous and foiliage-covered terrain. We found that FieldGenius was easy to learn and we keep discovering more powerful features.

  9. Connor Traves

    The RTK-fixed coverage with the S631 has been vastly improved over the older S321. FieldGenius has freed up our drafters, and made construction layout a breeze.

  10. Dustin Hicke

    The field crews appreciate how light it is compared to the other models. In addition, the tilt sensor is a great featureto help speed up our fieldwork.

  11. Greg Skelhorn

    The S631 is proving itself to be reliable and fast in all conditions. We have seen a definite performance boost with the addition of the S631.

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