Crystal Rugged

Crystal Group Inc., an employee-owned and -operated small business founded in 1987, designs and manufactures rugged, high-performance computer hardware, embedded computers, networking devices, displays, power supplies, and data storage devices for high-reliability, mission- and safety-critical applications in harsh environments. In addition to field-tested, combat-proven systems, the company provides in-house customization, engineering, integration, configuration management, product life cycle planning, warranty, and support services to defense, aerospace, government, industrial, commercial, and autonomous vehicle customers.

Industry leaders and innovators have selected Crystal Group rugged computer and electronics hardware for use on more than 600 military programs, across more than 35 countries, as well as a growing number of cutting-edge autonomous vehicle, power and critical infrastructure, industrial, and commercial projects.

Crystal Group products meet or exceed IEEE, IEC, and military standards (MIL-STD-810, 167-1, 461, MIL-S-901) and FIPS 140-2 and NIAP certified options; are backed by warranty (5+ year) with in-house support. All products are manufactured in the company’s NIST compliant Hiawatha, Iowa, USA, facilities and are certified to ISO 9001:2015/AS9100 quality management standards.

Crystal Group continues to innovate and invent useful solutions to pressing challenges, and holds 25 patents on novel systems and methods, assigned between 2001 and 2017.

Crystal Group, together with its capable staff and state-of-the-art facilities, prides itself on helping to support customer goals, meet program and product requirements, and improve the lives and missions of end users – by delivering robust, rugged, and reliable products, backed by industry-leading warranty and support, and high-quality services on-time and on-budget.

Contact Details

Crystal Group, Inc.

855 Metzger Drive

Hiawatha, IA 52233

Phone (Toll-free): 1-800-378-1636

Phone (International): +1 319-978-1636

Fax: 319-393-2338

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Products

Crystal Rugged - RS363S15F Rugged 3U Server

Crystal Rugged - RS363S15F Rugged 3U Server

  • Light weight aluminum construction – 35-40 lbs.
  • Easily mounted – Delrin glides, fixed mount, or Jonathan® rails
  • Up to 1 TB of memory
  • Rugged 3U, rack mounted 15” depth
  • Three removable 3.5” HDDs or five 2.5” SATA or SAS bays
  • Expandable with six slots
  • Optional liquid cooling kit available
  • Intel® Xeon® Scalable processors
  • Front I/O

Crystal Rugged - RS363S15FM Rugged 3U Server / Workstation

Crystal Rugged - RS363S15FM Rugged 3U Server / Workstation

  • Light weight aluminum construction – 30-35 lbs.
  • Easily mounted – Delrin glides, fixed mount, or Jonathan® rails
  • Up to 512 GB of memory
  • Rugged 3U, rack mounted 15” depth
  • Versatility with three removable 3.5” HDDs or five 2.5” SATA or SAS bays
  • Expandable with six slots
  • Intel® Xeon® Scalable processors
  • Front MIL-CIRC I/O

Crystal Rugged - RS363SF Rugged 3U Server / Workstation

Crystal Rugged - RS363SF Rugged 3U Server / Workstation

  • Light weight aluminum construction – 30 -35 lbs.
  • Easily mounted – Delrin glides, fixed mount, or Jonathan® rails
  • Up to 512 GB of memory
  • Rugged 3U, rack mounted 13” depth
  • Versatility with three removable 3.5” HDD or six (6) 2.5” SATA or SAS bays
  • Expandable with six slots
  • Intel® Xeon® Scalable processors
  • AC or DC power input
  • Front I/O and power

Crystal Rugged - RS373S17 Rugged 3U Server / Workstation

Crystal Rugged - RS373S17 Rugged 3U Server / Workstation

  • Light weight aluminum construction – 26 lbs.
  • Easily mounted – Delrin glides, Fixed mount, or Jonathan® rails
  • Up to 512 GB of memory
  • Rugged 3U, rack mounted 17” depth
  • Versatility with three removable 3.5” HDD or six 2.5” SATA or SAS bays
  • Expandable with seven full height slots
  • Intel® Xeon® Scalable processors
  • Optional optical drive
  • AC or DC power input

Crystal Rugged - RS373S17M Rugged 3U Server

Crystal Rugged - RS373S17M Rugged 3U Server

  • Light weight aluminum construction – 35- 40 lbs.
  • Easily mounted – Delrin glides
  • Up to 512 GB of memory
  • Versatility with nine SATA/SAS 2.5″ drive bays
  • Expandable with seven slots
  • Five-year warranty
  • Intel® Haswell and Broadwell family CPUs
  • 17″ depth
  • Modular I/O

Crystal Rugged - RS376M Rugged 3U Server

Crystal Rugged - RS376M Rugged 3U Server

  • Light weight aluminum construction – 35-38 lbs.
  • Easily mounted – Delrin glides, fixed mount, or Jonathan® rails
  • Up to 1 TB of memory
  • Rugged 3U, rack mounted 20” depth
  • Versatility with up to eighteen removable 2.5” SATA, SAS, or NVMe bays
  • Expandable with up to seven PCIe expansion slots
  • Modular MIL-CIRC or Commercial I/O Panels
  • Intel® Xeon® Scalable processors

Crystal Rugged - RS378 Rugged 3U Server / Workstation

Crystal Rugged - RS378 Rugged 3U Server / Workstation

  • Light weight aluminum construction – 40-46 lbs.
  • Easily mounted – Delrin glides, fixed mount, or Jonathan® rails
  • Up to 512 GB of memory
  • Rugged 3U, rack mounted 20” depth
  • Versatility with eight removable 3.5” HDD or 2.5” SATA or SAS bays
  • Expandable with seven full height slots
  • Intel® Xeon® Scalable processors

Crystal Rugged - RS378L24 Rugged 3U Server / Workstation

Crystal Rugged - RS378L24 Rugged 3U Server / Workstation

  • Light weight aluminum construction – 50-56 lbs.
  • Easily mounted – Delrin glides, fixed mount, or Jonathan® rails
  • Up to 1 TB of memory
  • Rugged 3U, rack mounted 24” depth
  • Versatility with eight removable 3.5” HDD or eleven 2.5” SATA or SAS bays
  • Expandable with seven full height slots
  • Intel® Xeon® Scalable processors

Crystal Rugged - RS378P Rugged 3U Carbon Fiber Server / Workstation

Crystal Rugged - RS378P Rugged 3U Carbon Fiber Server / Workstation

  • Ultra light weight carbon fiber chassis – 22-36 lbs.
  • Up to 512 GB of memory
  • Easily mounted – Delrin glides or Jonathan® rails
  • Rugged 3U, rack mounted 20” depth
  • Versatility with sixteen removable 2.5” drives or eight removable 3.5” drive bays
  • Expandable with multiple slot configurations
  • Intel® Xeon® Scalable processors
  • AC or DC power input

Crystal Rugged - RS4104 Rugged 4U Server

Crystal Rugged - RS4104 Rugged 4U Server

  • Aluminum construction – 65 lbs.
  • Easily mounted – Delrin glides, fixed mount, or Jonathan® rails
  • Up to 512 GB of memory
  • Rugged 4U, rack mounted 20″ depth
  • 1780W N+1 AC power supply
  • Versatility with four removable 3.5” HDDs or eight 2.5” SSD SATA or SAS bays
  • GPGPU ready
  • Expandable with ten PCIe slots
  • Intel® Xeon® Scalable processors

Crystal Rugged - RS465SF Rugged 4U Server

Crystal Rugged - RS465SF Rugged 4U Server

  • Aluminum construction – 35 lbs.
  • Easily mounted – Delrin glides, fixed mount, or Jonathan® rails
  • Up to 512 GB of memory
  • Rugged 4U, rack mounted 13″ depth
  • Versatility with five removable 3.5” HDDs or multipledrive pack options
  • Expandable with six slots
  • Intel® Xeon® Scalable processors
  • AC or DC power input
  • Front I/O

Crystal Rugged - RS4704S18 Rugged 4U Server

Crystal Rugged - RS4704S18 Rugged 4U Server

  • Aluminum construction – 43 lbs.
  • Easily mounted – Delrin glides, fixed mount, or Jonathan® rails
  • Up to 192 GB of memory
  • Rugged 4U, rack mounted 18″ depth
  • 1200W 1+1 AC power supply
  • Versatility with up to twelve 2.5” SSD SATA or SAS drives
  • GPGPU ready
  • Expandable with four x16 and two x8 PCIe slots
  • Intel® Xeon® Scalable processors

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  • Pressure calibrator with built-in electric pump for one-handed pressure calibration
  • Offers best-in-class pressure measurement uncertainty of 0.025%
  • Measures and sources mA with best in class 0.015% accuracy to test valves and I/Ps
  • Calibrates 30 psi and 100 psi pressure ranges
  • Features precision pressure adjustment vernier for easy and accurate pressure calibration


Fluke CLKT Infrared Windows are Available in Three Sizes 50 mm (2 in), 75 mm (3 in) and 100 mm (4 in)

Each CLKT infrared window is engineered and tested to withstand electric-arcs up to 50 kA for 30 cycles.

The ClirVu® coating - exclusive to Fluke infrared windows - seals the optic prior to assembly to protect against moisture degradation making it perfect for very hot and very cold outdoor environments.

Each Fluke infrared window is delivered with an identification plate attached for unique, on-site numbering for rapid location confirmation and faster repairs.

CLKT infrared windows come complete with a security access key, installation instructions and self-adhesive drilling template.

For 5 minute or less installation and Autoground consider the CV300.


  • Rugged case and electronics
  • Large LCD displays CO levels from 0 to 1000 ppm
  • Bright back-light allows easy screen viewing under dim lighting conditions
  • Beeper triggers with increasing frequency as CO levels rise
  • MAX Hold function stores and displays the maximum CO level
  • Automatic sensor zeroing and self-test sequence upon start-up
  • CO level beeper can be silenced if desired
  • Automatic power-off after 20 minutes extends battery life
  • Easy to replace battery
  • Replaceable sensor extends tool life
  • C50 soft carrying case, battery and instruction sheet
  • Stabilized electrochemical CO specific sensor
  • Typical two year sensor life; one year calibration cycle
  • Battery life typical 500 hours with alkaline battery
  • Updated sensor


  • Power quality that meets the standard All measurements comply with IEC61000-4-30 standards for correct evaluation of all measured values including voltage, current, power, harmonics, flicker etc.
  • Quick and reliable configuration A tablet computer provides a window into what the instrument is recording, enabling quick and reliable configuration even in awkward test locations
  • Threshold-free set up Apply thresholds after data is collected with Fluke Power Analyze Software – no need to worry about missed information due to incorrect setups
  • Captures everything Cross-channel and current triggering capture every measurement, on every channel, every time
  • Intuitive PC software Easily analyze data and generate reports with automated EN50160 reporting and compliance
  • Reporting has never been easier Auto Report creates either standard reports or customized reports with the minimum effort or hassle. Export reports to almost any format including RTF (Rich Text Format) for editing in Microsoft Word.
  • Plug and play Set up in minutes with self-identifying current probes and single-lead voltage connections
  • No need to reconnect wires Swap channels internally with the wireless PDA or PC when connections are not correct
  • Measure every parameter Voltage and current on three phases, neutral, and ground
  • 5 MHz, 8000 Vpk waveform capture Get a detailed picture of even the shortest events
  • Quickly retrieve data With included SD memory card or via the 100 BaseT high-speed Ethernet connection. SD card includes automatic download to SD when no other connection is made to the instrument


  • Quickly configure, start and stop tests on the 1550C remotely, a safe distance away from any operating, energized equipment, using Fluke Connect® and a smart phone
  • Real time trending gives you easy-to-see visual cues, rather than hard to read, rapidly changing values
  • Report creation using Fluke Connect desktop saves time and makes test results easier to understand
  • Fluke Connect saves test results to the cloud for analysis and preventive maintenance