1. Research and Development
  2. Custom Research Equipment
  3. Calibration Services (oceanographic instrumentation)
  4. EMF Surveys

1. Mike Souheil Fcs Research and Development

Our engineering services range from mechanical design and fabrication, electronic design and assembly to software development. We are always interested in hearing about special-purpose instrumentation requirements. We have developed equipment for applications in telecommunication and security services, for laboratory automation and image processing, as well as for the freshwater and marine sciences.

Since February 1991 RBR has been the sole source for CORK electronics. RBR has designed and manufactured custom electronics for the Pacific Geo-science Centre (PGC) Natural Resources Canada for their scientific research. Due to the success of the CORK Logger, RBR has developed an advanced CORK Logger or A-CORK. Improvements include ability to monitor pressures at a number of discrete levels in sub-sea formations, and temperatures at a greater number of levels, as well as to a greater degree of accuracy.

  • For the scientific rationale behind the A-CORK see: Advanced CORKs for the 21st Century.
  • See the June 4, 2002 press release on the latest CORKs.

In 2001 RBR introduced some modifications to an instrument (EV-10) for research in the Wildlife Toxicology Division of the National Wildlife Research Centre. This instrument uses a very sensitive ‘microphone’ to detect heartbeats of young birds (in the egg) in order to determine their viability at very early stages of their development. This research is then used to determine the impact of environmental contaminants, based on the egg viability.

Other research at RBR includes work on a suite of software programs used for object recognition and image analysis on microscope slides to find and count those chromosomes damaged by radiation.

For R&D enquiries please e-mail:


Mike Souheil Fcs Custom Research Equipment

Geophysics: RBR works with the Pacific Geo-science Centre designing and manufacturing large-scale custom oceanographic equipment. We have extensive experience in the provision of electronic assemblies for long term hydrogeology research and geophysical surveying (cf., CORK, Heat Probe and DVTP).

Freshwater and Marine Research: Two great examples of our custom freshwater and marine loggers are: the XR-420 CTD+2; and the XR-420 Custom. The XR-420 CTD+2 can have two additional sensors added to its freshwater or marine CTD package. Our XR-420 Custom can be fully customized. It can have one to 12 sensors. Let us know your specific sensor requirements and we can provide you with a quote. We will also install virtually any sensor of your choice. Some sensor manufacturers we have used in the past include: Oxyguard, D&A, Seapoint, WETLabs, YSI, Chelsea, Licor and Paroscientific. See a list of typical (though not exclusive) third party sensor companies.

Cryospheric Research: we offer custom thermistor strings to virtually any length. We can supply them for the standard marine temperature range and for extended ranges. We also can accommodate customer-selected thermistors. Our multi-channel temperature loggers (XR-420 T24) are currently in use in glaciers, permafrost, and soil (as well as in lakes and oceans). Our single-channel TR-1050 is also available in extended ranges.

Ornithology: The EV-10 is designed to be sensitive enough to measure the embryonic viability in eggs with a mass of 15g. The EV-10 has been designed for the field ornithology research led by Craig Hebert in the Wildlife Toxicology Division of the National Wildlife Research Centre.

For enquiries please e-mail:

[top]3. Mike Souheil Fcs Calibration Services


RBR uses a Hart Scientific 4012 stirred bath and a Model 1575 Platinum thermometer. The calibration of the system is checked against a 0.010°C triple point of water cell (ą0.0001°C) and a 29.7646°C Gallium reference (ą0.0001°C). All of the instruments have NIST traceable calibration. Calibration of each unit is carried out at eight temperatures from -5° to +35°C. Temperature readings are taken at ten second intervals, and an average of 100 stable samples is used to obtain each point. This produces a fit with a typical uncertainty of <0.2 mK on each point.

Sample temperature calibration graph:

NB: The NIST claims an uncertainty for thermistor calibration of little better than ą2 mK, and only suggests ą0.3 mK for a TPW cell. The NRC of Canada currently will only accredit secondary standards laboratories to an accuracy of ą6 mK.


A Druck Pressurements hydraulic deadweight tester is used to give a direct NIST traceable standard. Pressures throughout the range of 0 to 3000PSI (0 to 4000m depth) are available to an accuracy of 0.015%. For each pressure range offered, an eight point calibration is carried out and a cubic fit to the data is used to give the sensor characteristic. The gauges used are all absolute pressure. The conversion from absolute pressure to depth requires a knowledge of the local atmospheric pressure and water density. These may be entered into the logger software at the time of download of data to give water depth.

Sample pressure calibration graph:

[residuals vs pressure]


We use a Guildline Autosal 8400B (ą0.002), which is standardized using IAPSO Standard Seawater. All calibrations are carried out using eight points, and a cubic polynomial curve fit. All loggers are supplied with a calibration certificate showing the deviation from the curve at each point. Below is a graph of residuals for the freshwater range of 0 to 2 mS/cm (graph in ľS/cm).

Residuals vs conductivity for the 0 to 70 mS/cm range are as follows:

[redisual vs conductivity marine range (mS/cm)]

Other Sensors

Our other sensors are third party equipment. We rely upon the manufacturer’s calibration.

  • To see our list of third-party sensor, click here.
  • For pricing enquiries please e-mail:


[top]4. EMF Surveys

RBR offers electromagnetic field surveys to determine the RF radiation exposure levels in the home or workplace. Radiation from computer terminals, VDTs, electrical apparatus and overhead power lines and domestic microwave ovens may be assessed.
RBR uses standard electromagnetic field survey instruments and all measurements are compared to the limits outlined in the Health Canada‘s Safety Code 6, the ICNIRP Guidelines and the Microwave Oven Regulations. A written evaluation and report of the measurements is provided.

The regular EMF survey equipment at RBR includes (additional instrument may be used when required for broad spectrum measurements):

  • Holaday HI-3603 VDT Survey Meter
  • Holaday HI-3604 ELF Survey Meter
  • Holaday HI-1501 Micro Survey Meter

See EMF page for standards and equipment specifications or contact us by phone or e-mail us for further information.

For pricing enquiries please e-mail: