8870N Overfill Prevention and Ground Verification Monitor
The 8870N Series Overfill Prevention & Ground Verification Monitor from OPW Engineered Systems helps make miscommunication at the loading rack a thing of the past. Rather than relying on written directions or blinking lights to indicate a permissive or non-permissive status for API bottom loading of multi-compartment tank trucks, the 8870N rack monitor uses symbols and pictograms for a more intuitive and simpler to understand loading process.
This gives the driver added peace of mind that the loading operation is being performed properly and safely. This also allows the 8870N rack monitor to be used anywhere in the world, no matter the native language of the driver, region or country.
Features/Benefits
- 2-Wire or 5-Wire Optic automatic sensor recognition technology
- Combined overfill protection and ground verification
- 120-/240-volt auto-switching
- Supports up to 12 5-wire or 8 2-wire optic sensors
- Self-checking at Start-Up; continuous Self-Monitoring
- Three relays including one separate user-definable output relay: Overfill & Ground, Overfill, Ground, Smart Storage Hanger
- Fail-safe redundant permissive output relays
- Intuitive OLED graphic display
- LED individual status-indicator lights
- Real-time clock
- Event logging time stamped
- Vehicle data communication prepared
- Sophisticated wireless multiple-function and bypass key
- Dead-man switch connection available
- Low-temperature operational in extreme environmental conditions as low as -45ºC
- MODBUS communication available
- Conforms to NEN EN13922, API RP1004 and VOC directive 94/63/EC
- Combine with OPW-Civacon 5-Wire Cane Probe for top-loading applications on tank truck or railcars
- SIL 1 standard, SIL 2 optional
Technical Information
| Product Specifications | |
| Input power supply | 85-264 Vac 50/60Hz Auto-Switching |
| Nominal power consumption | 4VA |
| Output relays | 240V ac/dc 2AT |
| Communication | Optional RS485/422 datacomms port |
| Operating temperature | -45ºC to +70°C |
| Response time | < 400ms |
| Approvals | ATEX / IECEx / QPS for NA and CAN |
| Enclosure | IP65 according to IEC 60529 |
| Weight | 7.3 kg |
| Dimensions | 270x230x60 mm |
Ordering Guide
OPW Rack Monitor Contractor Packs make it easy to order rack monitors and support components including junction boxes and plugs. Simply select the rack monitor, junction box option (standard or breakaway), and cord type. We pack all the components in a single carton.
Rack Monitor Item Numbers
| Item # | Description | Overfill Protection | Ground Verification | 2-Wire | 5-Wire Optic |
| 8870N | Overfill and Ground Verification Rack Monitor with OLED Display | X | X | X | X |
| 8851N | Ovefill and Ground Verification Rack Monitor | X | X | ||
| 8811N | Ground Verification Rack Monitor | X | N/A | N/A |
Contractor Pack Ordering Information
| Item # | Monitor | Junction Box | Cord | Breakaway | Cord Set |
| 8870N-PACK1-B0 | 8870N | 7500-7500 | 7100-7100 | NO | 5-Wire Blue Optic |
| 8870N-PACK2-B1 | 8870N | 7540-7540 | 7120-7120 | YES | 5-Wire Blue Optic |
| 8870N-PACK1-G0 | 8870N | 7500-7500 | 7300-7300 | NO | 2-Wire Green |
| 8870N-PACK2-G1 | 8870N | 7510T-7510 | 7320-7320 | YES | 2-Wire Green |
| 8851N-PACK1-B0 | 8851N | 7500-7500 | 7100-7100 | NO | 5-Wire Blue Optic |
| 8851N-PACK2-B1 | 8851N | 7540-7540 | 7120-7120 | YES | 5-Wire Blue Optic |
| 8811N-PACK1-C1 | 8811N | 7501-7500 | 7720-7720 | NO | Ground-Clamp |
| 1 | 2 | 3 |
| 8870N | Pack 1 | B0 |
| 1 | RACK MONITOR |
|---|---|
| 8870N Ground and Overfill Rack Monitor with OLED Display | |
| 8851N Ground and Overfill Rack Monitor | |
| 8811N Ground Verification Rack Monitor | |
| 2 | JUNCTION BOX OPTION |
| Pack 1 7500-7500 Standard Junction Box | |
| Pack 2 7540-7540 Breakaway Junction Box (5-Wire Optic) | |
| 7510T-7510T Breakaway Junction Box (2-Wire) | |
| 3 | CORD TYPE |
| B0 - 7100-7100 Blue Optic Standard | |
| B1 - 7120-7120 Blue Optic Breakaway | |
| G0 - 7300-7300 Green Standard | |
| G1 - 7320-7320 Green Breakaway | |
| C1 - 7720-7720 Ground Clamp with 40' Straight Cord |
Recommended Spare Parts
| Part Number | Description | Qty | 8870N / 8851N | 8811N |
| H71197 | Main Seal | 1 | X | X |
| H71307 | Corrosion Protector VCI-101/ACF-50 | 1 | X | X |
| EL04208 | Mains Power Input Fuse (TR5 1A Slow Blow 250V), Qty. 2 Per Unit | 1 | X | X |
| EL04141 | Relay Contact Output Fuse (TR5 2A Slow Blow 250V), Qty. 3 Per Unit) | 1 | X |
Additional Spare Parts
| Part Number | Description | Qty | 8870N / 8851N | 8811N |
| EL00203-CRK | Internally Used Connector Kit | 1 | X | X |
| BCU-RE-001 | Red Function Key (High Level) | 1 | X | |
| EL06802 | SD-Ram Card | 1 | X | |
| 8800-BRK-14 | Fastener Kit 14x Door Bolts | 1 | X | X |
| H71342 | Installation Manual | 1 | X | X |
| EL05104 | Cable Gland M20x1,5 Ø Cable Diameter 10-14mm ATEX-Ex/d (Not Armed) | 1 | X | |
| EL05134 | Cable Gland M20x1,5 Ø Cable Diameter 3.1-8.6mm ATEX-Ex/d (Not Armed) | 1 | X | |
| 73xx Series | Green (2-Wire / Therm.) Plug and 8 or 10-Conductor Straight or Coiled Cable | 1 | X | |
| 71xx Series | Blue 5-Wire Optic Plug and 6 or 10-Conductor Straight or Coiled Cable | 1 | X | |
| 7400E | Black Plug and 10-Conductor with Screened #9 Data Conductor Coiled Cable (per EN13922) | 1 | X |
Brochures
-
Terminal Solutions Brochure
-
Rack Equipment Sales Guide
-
8800 Series Rack Monitor Brochure
-
8800 Series Rack Monitor Brochure (Spanish)
Installation & Operation Manuals
-
8800 Series Rack Monitor Quick Start Guide
-
8800 Series Rack Monitor Installation Manual
-
8800 Series Rack Monitor Operations Manual
-
8800 Series Rack Monitor Plug Pin Layout
-
8811N Ground Verification Operations Manual
-
8811N Ground Verification Monitor Wiring Diagram
-
8800 Series Rack Monitor Mounting Hole Guide
Features/Benefits
- 2-Wire or 5-Wire Optic automatic sensor recognition technology
- Combined overfill protection and ground verification
- 120-/240-volt auto-switching
- Supports up to 12 5-wire or 8 2-wire optic sensors
- Self-checking at Start-Up; continuous Self-Monitoring
- Three relays including one separate user-definable output relay: Overfill & Ground, Overfill, Ground, Smart Storage Hanger
- Fail-safe redundant permissive output relays
- Intuitive OLED graphic display
- LED individual status-indicator lights
- Real-time clock
- Event logging time stamped
- Vehicle data communication prepared
- Sophisticated wireless multiple-function and bypass key
- Dead-man switch connection available
- Low-temperature operational in extreme environmental conditions as low as -45ºC
- MODBUS communication available
- Conforms to NEN EN13922, API RP1004 and VOC directive 94/63/EC
- Combine with OPW-Civacon 5-Wire Cane Probe for top-loading applications on tank truck or railcars
- SIL 1 standard, SIL 2 optional
Technical Information
| Product Specifications | |
| Input power supply | 85-264 Vac 50/60Hz Auto-Switching |
| Nominal power consumption | 4VA |
| Output relays | 240V ac/dc 2AT |
| Communication | Optional RS485/422 datacomms port |
| Operating temperature | -45ºC to +70°C |
| Response time | < 400ms |
| Approvals | ATEX / IECEx / QPS for NA and CAN |
| Enclosure | IP65 according to IEC 60529 |
| Weight | 7.3 kg |
| Dimensions | 270x230x60 mm |
Ordering Guide
OPW Rack Monitor Contractor Packs make it easy to order rack monitors and support components including junction boxes and plugs. Simply select the rack monitor, junction box option (standard or breakaway), and cord type. We pack all the components in a single carton.
Rack Monitor Item Numbers
| Item # | Description | Overfill Protection | Ground Verification | 2-Wire | 5-Wire Optic |
| 8870N | Overfill and Ground Verification Rack Monitor with OLED Display | X | X | X | X |
| 8851N | Ovefill and Ground Verification Rack Monitor | X | X | ||
| 8811N | Ground Verification Rack Monitor | X | N/A | N/A |
Contractor Pack Ordering Information
| Item # | Monitor | Junction Box | Cord | Breakaway | Cord Set |
| 8870N-PACK1-B0 | 8870N | 7500-7500 | 7100-7100 | NO | 5-Wire Blue Optic |
| 8870N-PACK2-B1 | 8870N | 7540-7540 | 7120-7120 | YES | 5-Wire Blue Optic |
| 8870N-PACK1-G0 | 8870N | 7500-7500 | 7300-7300 | NO | 2-Wire Green |
| 8870N-PACK2-G1 | 8870N | 7510T-7510 | 7320-7320 | YES | 2-Wire Green |
| 8851N-PACK1-B0 | 8851N | 7500-7500 | 7100-7100 | NO | 5-Wire Blue Optic |
| 8851N-PACK2-B1 | 8851N | 7540-7540 | 7120-7120 | YES | 5-Wire Blue Optic |
| 8811N-PACK1-C1 | 8811N | 7501-7500 | 7720-7720 | NO | Ground-Clamp |
| 1 | 2 | 3 |
| 8870N | Pack 1 | B0 |
| 1 | RACK MONITOR |
|---|---|
| 8870N Ground and Overfill Rack Monitor with OLED Display | |
| 8851N Ground and Overfill Rack Monitor | |
| 8811N Ground Verification Rack Monitor | |
| 2 | JUNCTION BOX OPTION |
| Pack 1 7500-7500 Standard Junction Box | |
| Pack 2 7540-7540 Breakaway Junction Box (5-Wire Optic) | |
| 7510T-7510T Breakaway Junction Box (2-Wire) | |
| 3 | CORD TYPE |
| B0 - 7100-7100 Blue Optic Standard | |
| B1 - 7120-7120 Blue Optic Breakaway | |
| G0 - 7300-7300 Green Standard | |
| G1 - 7320-7320 Green Breakaway | |
| C1 - 7720-7720 Ground Clamp with 40' Straight Cord |
Recommended Spare Parts
| Part Number | Description | Qty | 8870N / 8851N | 8811N |
| H71197 | Main Seal | 1 | X | X |
| H71307 | Corrosion Protector VCI-101/ACF-50 | 1 | X | X |
| EL04208 | Mains Power Input Fuse (TR5 1A Slow Blow 250V), Qty. 2 Per Unit | 1 | X | X |
| EL04141 | Relay Contact Output Fuse (TR5 2A Slow Blow 250V), Qty. 3 Per Unit) | 1 | X |
Additional Spare Parts
| Part Number | Description | Qty | 8870N / 8851N | 8811N |
| EL00203-CRK | Internally Used Connector Kit | 1 | X | X |
| BCU-RE-001 | Red Function Key (High Level) | 1 | X | |
| EL06802 | SD-Ram Card | 1 | X | |
| 8800-BRK-14 | Fastener Kit 14x Door Bolts | 1 | X | X |
| H71342 | Installation Manual | 1 | X | X |
| EL05104 | Cable Gland M20x1,5 Ø Cable Diameter 10-14mm ATEX-Ex/d (Not Armed) | 1 | X | |
| EL05134 | Cable Gland M20x1,5 Ø Cable Diameter 3.1-8.6mm ATEX-Ex/d (Not Armed) | 1 | X | |
| 73xx Series | Green (2-Wire / Therm.) Plug and 8 or 10-Conductor Straight or Coiled Cable | 1 | X | |
| 71xx Series | Blue 5-Wire Optic Plug and 6 or 10-Conductor Straight or Coiled Cable | 1 | X | |
| 7400E | Black Plug and 10-Conductor with Screened #9 Data Conductor Coiled Cable (per EN13922) | 1 | X |
Brochures
-
Terminal Solutions Brochure
-
Rack Equipment Sales Guide
-
8800 Series Rack Monitor Brochure
-
8800 Series Rack Monitor Brochure (Spanish)
Installation & Operation Manuals
-
8800 Series Rack Monitor Quick Start Guide
-
8800 Series Rack Monitor Installation Manual
-
8800 Series Rack Monitor Operations Manual
-
8800 Series Rack Monitor Plug Pin Layout
-
8811N Ground Verification Operations Manual
-
8811N Ground Verification Monitor Wiring Diagram
-
8800 Series Rack Monitor Mounting Hole Guide
OPW CORPORATE HEADQUARTERS
9393 Princeton-Glendale Road
Hamilton, Ohio, USA 45011
Phone: (800) 547-9393
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