Frequently Asked Questions
Everything you need to know about REX — specifications, operation, safety, and support.
What dissolved metals can REX analyze?
From Magnesium to Uranium.
To what levels will REX detect?
From high parts per thousand to low parts per billion.
How many metals can REX detect at the same time?
Up to 12 metals at once, depending on the x-ray source and filter installed in the system, specifically designed and tested for elements chosen by the end-user.
How does the customer receive results?
Results are automatically emailed to a list of addresses specified by the customer.
How does REX send data?
REX sends data via Ethernet, WiFi, or Satellite uplink (this is an extra charge).
Is REX capable of operating as a process control instrument?
Yes. REX comes standard with 7 process control ports set to industry standard 4-20mA output.
Does REX operate in flow conditions or static grab sample only?
REX is designed to operate in flow conditions at 40ml/min.
Must the water flow be filtered?
REX normally does not require filtration, but particulate size cannot exceed 5 microns. We supply a dual 5-micron filter manifold for those installations where particulates are an issue.
What pressure does REX operate at?
REX comes with an inlet pressure regulator factory set to 1.5 PSIG at 40ml/minute of flow.
What are the power requirements?
REX operates on standard line voltages of 110-220Vdc @ 20A.
Is REX radiation safe?
Yes. No radiation source leakage has been found beyond the REX enclosure when operated at full power of 25KV @ 1mA. In addition, all major components are safety interlocked to prevent tampering.
Do I need special certification to operate REX?
Check with your local health and safety office. Typically REX must be registered with local authorities the same as a dentist office registers their x-ray systems. This is usually a single-page form that states the location of use.
What is the mean time between failure?
The MTBF is 14,000 hours.
What is the typical cycle time?
Parts per billion measurements require 1 hour, and parts per thousand or parts per million require 15 minutes.
What is the spectral resolution of the x-ray detector?
Utilizing the state-of-the-art detector, resolution is 120eV FWHM for Fe55.
What is the length of warranty?
AMDS warrants the REX instrument for 1 year against defects in materials and manufacturing. Extended warranties are available from your servicing dealer.
What is the weight of the REX unit?
REX weighs 48 pounds in the standard enclosure and 140 pounds in the NEMA G4 enclosure.
What is the operating temperature range?
35 degrees F to 120 degrees F.
Can REX be used in a wet environment?
REX, in its standard enclosure, is water-resistant to minor spray, and the NEMA G4 enclosure is water-resistant to direct spray.
Can REX be used in high vibration environments?
REX is vibration dampened to 100Hz but should not be installed in high vibration environments.
Is REX a laboratory-based instrument?
No. REX is designed and developed for remote, in-situ emplacement at the site of concern.
How do I change the frequency of analysis?
The end-user can change the following via our proprietary simple GUI: frequency of analysis; delivery of reports to over 10K email addresses; process control options including upper and lower thresholds; and metals to be analyzed.
Is training available?
Yes. Contact the sales representative where you purchased your system for more information.
Are there trained service personnel for our application?
All products sold by us are serviced by our highly trained technicians.
Can REX be moved from site to site?
We do not recommend that your instrument be moved from its initial installation site to another site. If you must move your instrument, contact our trained personnel for assistance.
If my instrument needs warranty service and must be shut down for an extended period, do you offer a hot-swap?
Yes. Contact your local sales representative.