OPW M2010-EU, Installation Manual

Page: 103 / 149

9.12 Hydrocarbon Vapor Sensor
Smart Sensor Equipped with Intellisense™ Technology
30-0235-V
Description
The primary function of the Hydrocarbon Vapor Sensor is to sense hydrocarbon vapors in monitoring wells
and the interstitial areas of a double-walled tank. These vapors could indicate a possibly dangerous leak that
could lead to safety and environmental problems. The sensor is made from a long-life resistive element that
will increase in resistance when there are hydrocarbon vapors in the closed space where the device is
installed. The sensor will return to normal resistance when hydrocarbon vapors are gone. If there is a break
in the cable it will cause an alarm condition in the system.
Specifications
Primary Use: Monitoring wells
Alternate Use(s): Interstitial areas of a double-walled tank
Detects: Hydrocarbon vapor
Operating Temperature: -40°C to +70°C (-40°F to 158°F)
Dimensions: Length: 8.9 cm (3.5”), Diameter: 2.3 cm (0.9”)
Nominal resistance (uncontaminated) Less than 5,000 ohms
Nominal resistance (contaminated) More than 10,000 ohms
Doc. No.: M2010-EU Rev.: 13
Page 103 of 149