Intrinsically Safe (IS) Circuits
Earthing Pro GE is associated apparatus combining flameproof protection with intrinsic safety. Inside the controller, galvanic isolation converts the non-intrinsically safe supply into an isolated, energy-limited intrinsically safe monitoring output. This output is routed to the intrinsically safe junction box and then to the field clamp. The barrier prevents power and relay circuits from transferring ignition-capable energy into the hazardous-area clamp circuit.
Output Contacts
One NO/NC dry-contact relay output is standard; up to three outputs can be configured for pumps, valves, PLCs or auxiliary alarms. Relay contacts are rated 5 A at 30 VDC or 10 A at 250 VAC.
Installation
Mount controller and junction-box front panels vertically, keep covers accessible for inspection and ensure the display and field indicators are clearly visible. Route intrinsically safe wiring separately from power and control wiring in dedicated conduits; do not pass field wiring through the enclosure in a way that compromises segregation. Do not open the enclosure while energized and do not repair flameproof joints in the field.
After installation, verify input power, the designated grounding point, clamp-return detection, OLED sequence, ≤10 Ω response and every configured relay output. The unit is factory calibrated; commissioning is a functional verification rather than a recalibration.
Safety Standards and Guidance
EN IEC 60079 series: the certified arrangement applies the relevant general, flameproof, intrinsic-safety and dust-protection requirements to the controller and field circuit.
IEC TS 60079-32-1: conductive objects used where explosive atmospheres may occur should be bonded or grounded so charge cannot accumulate. A path approaching about 1 MΩ may still allow static charge to leak away in some circumstances, but this does not prove that an all-metal connection is mechanically sound.
NFPA 77: bonding and grounding practice distinguishes charge dissipation from verification of continuity in metal paths. A low-ohm check is used to expose paint, corrosion, loose clamps and damaged conductors.
API RP 2003: petroleum-transfer practice emphasizes establishing the bond/ground before product movement and maintaining it throughout transfer.
Why Earthing Pro GE uses ≤10 Ω: the clamp, copper conductor and grounded metal object should normally be close to zero resistance. The ≤10 Ω threshold is therefore a conservative circuit-integrity and interlock criterion, not a statement that every cited standard universally mandates exactly 10 Ω.
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During the factory tour, the customers visited the production and testing areas and learned about ALPTEC Automation's manufacturing processes and quality control procedures. Our ge
Mount controller and junction-box front panels vertically, keep covers accessible for inspection and ensure the display and field indicators are clearly visible. Route intrinsicall
Earthing Pro GE is associated apparatus combining flameproof protection with intrinsic safety. Inside the controller, galvanic isolation converts the non-intrinsically safe supply
In hazardous area loading, unloading, filling, and transfer operations, static grounding is not only about connecting a clamp. It is also about verifying whether the grounding connection is effective, visible, and controllable throughout the operation.
In tanker loading applications, overfill prevention is one of the most important safety functions at the loading rack. A reliable system must confirm that the tanker connection is correct, the probe circuit is healthy, and the loading process can be stopped before product reaches an unsafe level.
In tank truck loading, overfill protection should be a loading permission system, not only a warning light. A modern controller checks whether the tanker, probe circuit and grounding condition are ready before product transfer starts, and it continues monitoring these conditions throughout loading.
ALPTEC Earthing Pro provides real-time resistance monitoring, alarms, relay interlock, and Modbus communication for tank truck loading, fuel terminals, chemical plants, drums, rail tank cars, and FIBC applications.
This year, ALPTEC proudly celebrates its 30th anniversary, marking an important milestone in the company’s development and a meaningful new starting point for the future.
In the vibrant midsummer of July, Alptec proudly celebrated an important milestone in its development. On July 6, 2022, the company officially opened Aoshi Industrial Park in the Hongshiya Comprehensive Bonded Zone and successfully relocated to its second office campus.
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