What We Do

Many industries that regularly handle combustible materials, from petroleum refining to chemical processing and fueling stations, are at risk of catastrophic accidents if materials are not properly handled. The buildup of static charges generated by machinery can cause sparking, which may ignite combustible gasses or liquids with disastrous effects to personnel and equipment. Sparks caused by static electricity are a major cause of fires and explosions within the industrial sector.

Static grounding is a way of managing static discharge by connecting two or more pieces of equipment with a conductive wire, which is then earthed via a grounding rod or electrode. This effectively drains static charges away from dangerous materials.

STS has provided grounding equipment and static monitoring systems for over 40 years. Our STS 300 Series Electronic Indicator Ground Assembly monitors the entire path of the conducting wire, from the equipment clamp to the grounding rod. In the event of any interruption in the grounding process, the STS 300 will automatically halt all equipment until the ground can be re-established.

Product Features

The STS 300 System provides two interlocking dry contacts for connection to filling equipment and controls to ensure no transfer of flammable product can begin without an established ground.

(STS) Special Technical Services - STS 300 Ground Monitoring System
NEMA 7, 8, and 9 explosion
proof enclosure
Enclosure Rating | (STS) Special Technical Services
Multiple types of ground clamps for various applications
Various Grounding Clamps | (STS) Special Technical Services
Indicator lamps to visually confirm proper ground has been established
Explosion Proof Lamps | (STS) Special Technical Services
Enclosure breather/drain included
Drain Plug Included | (STS) Special Technical Services
Dry relay contacts to permissively interlock pumps and motors
Dual Internal Dry Contacts | (STS) Special Technical Services
Optional deadman feature to provide additional safety
Deadman Feature | (STS) Special Technical Services
Multiple power sources available
Different Power Sources Available | (STS) Special Technical Services
Optional retractable cable reel to protect ground cable from damage
Retractable Reel Feature | (STS) Special Technical Services
Multiple ground cable types
and lengths
Mulpute Cables | (STS) Special Technical Services

Industry Applications