Earth-Rite® II RTR
The Earth-Rite® II RTR is a static grounding system designed for tanker truck loading and unloading operations. It provides verified grounding to safely dissipate electrostatic charge generated during the transfer of flammable or combustible materials. The system automatically accounts for variations in tanker truck capacitance and does not require calibration during installation or operation.
Specifications table
| Parameter | Value |
|---|---|
| Application | Tanker truck loading and unloading operations |
| Function | Static grounding verification and interlocked transfer control |
| Operating Principle | Tanker capacitance detection and continuous ground monitoring |
| Safety Method | Intrinsically safe (Ex ia) grounding verification circuit |
| Cable System | Retractable cable reel / spiral cable option |
| Status Indication | Red / green LED indication |
| Output | Interlock relay contacts for process control |
| Enclosure | Industrial hazardous area rated (model dependent) |
| Operating Temperature | Industrial outdoor/plant environments (model dependent) |
Features
- Designed specifically for tanker truck grounding applications
- Tri-mode verification of tanker recognition, ground confirmation, and continuity
- Intrinsically safe grounding system (Ex ia circuit)
- LED status indication for clear operator feedback
- Interlock prevents transfer unless safe grounding is confirmed
- No calibration required for varying tanker capacitance conditions
- Suitable for hazardous area loading operations
Specialized for tanker trucks
Detects tanker truck capacitance to ensure reliable grounding.
Tri-mode technology
Ensures safe product transfer by confirming three safety parameters: tanker recognition, verified ground, and continuous low-resistance connection.
Intrinsically safe operation
Uses an intrinsically safe (Ex ia) signal to verify grounding through the clamp and designated grounding point.
Visual indication
Switches from solid red to flashing green LEDs when grounding conditions are met, providing clear visual feedback to operators.
System interlocks
Offers intrinsically safe or volt-free non-intrinsically safe contacts to interlock with transfer equipment, preventing options unless a permissive state is confirmed.
Technical data
| Parameter | Value |
|---|---|
| Approvals & Certification | CSA US & Canada “Division Approval”: Cl I Div 1 Grps A-D; Cl II Div 1 Grps E,F,G; Cl III Div 1 CSA US “Zone Approval”: Class I, Zone 1, AEx d(ia) IIC T4; Class II, Zone 21, A21, IP66, T80C CSA Canada “Zone Approval”: Class I, Zone 1, Ex d(ia) IIC T4; DIP A21, IP66, T80C ATEX/IECEx: Ex d[ia] IIC T6 Gb(Ga), Ex tb IIIC T80C IP66 Db, Ta= -40C to +55C |
| Clamps | Body material: 304 stainless steel Contact points: two, tungsten carbide Body length: 9″/235mm |
| Cable | Hytrel coated spiral dual conductor cable, fitted with in-line quick-connect |
| Monitored Resistance | 10 ohms upper limit |
| Status Indication | Red / green LED indication |
| Power Supply | AC powered version: 110/120V or 220/240V AC 50-60 Hz DC powered version: 12V or 24V DC |
| Output Relay Contacts | Two voltage-free change-over switch contacts, 250VAC, 5A, 500VA max. resistive load |
| Monitor Weight | 9.9 lbs / 4.5 Kg |
| Enclosure Materials | Monitor: copper-free cast aluminum Clamp Stowage Point: carbon loaded GRP |
| Ingress Protection | IP66 / NEMA 4X/7/9 |
| Ambient Temperature | -13°F to +122°F / -40°C to +55°C |
| Options | Self-retracting cable reel. Ask about additional flashing beacons/strobes and alarm sounders |
Earth-Rite RTR™ Available Models
| Model | Description |
|---|---|
| CSA version for US/Canada: Model RTRMUA1A3 | Earth-Rite RTR™ Tri-Mode Static Grounding System, selectable 110/120 VAC or 220/240VAC, including heavy duty grounding clamp, 32 ft / 10m spiral cable and GRP clamp stowage point. |
| ATEX & IECEx version: Model RTRMEA1A3A | Earth-Rite RTR™ Tri-Mode Static Grounding Unit – ATEX IIC, 220/240Vac ±10% including Heavy Duty grounding clamp, 10m retractable spiral cable, GRP clamp stowage box and operator instruction board. |
Earth-Rite RTR™ Options
| Model | Description |
|---|---|
| Model VESM02 | Retractable Cable Reel with 50 ft / 15m of 2 conductor Hytrel protected static grounding cable |
| Model RTRT | Test Unit for RTR system installation, commissioning, and testing. Emulates typical tanker personality. |
Earth-Rite II RTRTM ®
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