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.