HOLIDAY DETECTORS

Model 670

Pipeline Inspection Company, Ltd. offers five "SPY"® model Portable Holiday Detectors. Solid-state circuitry, probes and electrode configurations combined with the latest technology make them simple and more efficient to use.

Infinite Voltage Settings allow you to set the voltage exactly to the level you desire for the coating you are inspecting. Not 6 settings, not 20 ... any setting you desire over the complete range of each detector model. Whatever the pipe size, 2 inches through 60 inches, whatever the coating - somastic, tar, asphalt, extruded coats and tapes or thin film epoxy coatings - you have at your control the exact voltage setting required.

Automatically Regulated Voltage keeps your voltage constant! Over a range of 2 in. through 60 in. pipe, the detector output voltage automatically adjusts under the working load to the voltage levels you set. Now you can forget compensations for pipe size, coating variations, or moisture on the pipe - the detectors automatically make these adjustments.

Interchangeable batteries easily slip into position with a snap that announces positive contact, and a secure lock in position. Two batteries and a universal charger are part of the package. For continuous service, one battery is kept charging while the other powers the unit. Efficient circuitry means reduced current drain and prolonged battery life.

Model 670 : Wet Sponge

The Model 670 is lightweight and easy to handle. The electrode wand assembly is easily inserted into the unit and secured.

Since the working voltage is quite low, a direct connection from the ground cable to the conductive metal under the coating must be made. A trailing ground wire will not suffice.

Inspect more area faster. A revolutionary roller sponge electrode is an optional accessory for the Model 670. With this roller sponge electrode, coating inspections move along faster and with less operator fatigue.

The Model 670 operates on a single 9 volt alkaline battery housed in the detector handle. These standard batteries are readily available at retail stores. Under normal conditions, the battery will have a long life. There is a minimal drain on the battery until a holiday is discovered. Unit output is 67 volts DC. This voltage makes this detector sensitive and accurate. A uniform coating of only one mil of paint or other non-conductive material is sufficient to repel this small current. If a pin-hole holiday is encountered, moisture from the sponge will seep in to create a free path for electrical flow, activating the signal horn.

For coatings from 1 mil up to 10 mils thick, ordinary tap water can be used to wet the sponge. Above 10 mils, for coatings of 11 to 20 mils thickness, a non-sudsing wetting agent (such as Kodak Photo-flow R®) is recommended to increase the ability of the moisture to swiftly make its way through pin-holes in the thicker coating.