The DHP is available
with SDI-12 or RS-485 outputs. The DHP-485 can be configured with 0-5 volt or
4-20mA output as well as having remote access capability. The DHP is capable of
being interfaced with most commercial data loggers, PLCs and samplers. Typical
applications for the DHP are leak detection at aboveground and underground
storage tank sites, pipeline leak detection, remediation monitoring, hydrocarbon
breakthrough, wastewater monitoring, process water monitoring, and storm water
monitoring.
The probes detect and quantify petroleum hydrocarbons both in the form of
vapor and dissolved in water. There is no response to methane or other naturally
occurring hydrocarbons. New leaks can be detected in the presence of old
contamination.
These probes have been Third Party Certified by Ken Wilcox Associates (www.kwaleak.com
). Underwriters Laboratories has performed UL, CUL and KEMA ia certifications
for use of the DHP in hazardous locations. The DHP and its analog counterpart
are listed in the U.S. Environmental Protection Agency (USEPA) List of Leak
Detection Evaluations for Underground Storage Tank Systems (www.epa.gov/OUST/pubs/index.htm)
and the State of California List of Leak Detection Equipment and Methods for
Underground Storage Tanks, LG 113-12 (www.swrcb.ca.gov/cwphome/ust/lg113/lg113.htm).
The DHP has also been specified in Florida Department of Environmental
Protection’s Approval File No. EQ-398 and is approved as a leak detection device
in areas that have been previously contaminated.
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