ST-35 Overfill Prevention Control Unit
Multiple-Point, Optic-Sensing Overfill Prevention Control Unit
- Interfaces with five-wire optic sensors
- Used, typically for bottom and top-loading of tank vehicles
- Mounted at the loading rack/gantry and connects to the vehicle via the Scully plug and cable assembly (sold separately).
- Features Dynacheck® circuitry for automatic and continuous self-checking of all system components
- For vehicle ground/earth verification options, consult Scully for information on the Groundhog Self-Proving Grounding System.
- ST-35 models monitor 1 to 8 compartment vehicles. ST-35C models monitor 1- to 12-compartment vehicles.
- Signals for automatic shut off of product flow within a half-second of detecting a potential overfill condition.
- Complete compatibility with Scully five-wire optic sensors, IntelliCheck® and Load Anywhere® onboard tank vehicle mounted overfill prevention systems.
- Will not permit loading under any fault or wet sensor condition.
The ordering information below is for FM and FMC approved units. For International ATEX and SIL approved models see:
CONTROL UNITS
| Part Number | Model Number | Description |
|---|
| 07901 | ST-35-115-EL | Multi-Point Optic Overfill Prevention Control, explosion-proof housing w/ lamps |
| 07903 | ST-35-115-ELK | Multi-Point Optic Overfill Control, indicator lamps and bypass control (115 VAC) |
| 07931 | ST-35-240-ELK | Multi-Point Optic Overfill Control, indicator lamps an bypass control (240 VAC) |
SCULCON JUNCTION BOX & PLUG & CABLE ACCESSORIES
| Part Number | Model Number | Description |
|---|
| 08161 | SC-6AO | Sculcon® Junction Box Kit, Blue Plug, Blue Coil Cable, 30′ |
| 08160 | SC-6AO | Sculcon Junction Box Kit, Blue Plug, Blue Straight Cable, 20′ |
| 08159 | SC-6W | Sculcon Junction Box Kit, Blue Plug, Blue Coil Cable, 30′ |
| 08139 | SC-6W | Sculcon Junction Box Kit, Blue Plug, Blue Straight Cable, 20′ |
REPLACEMENT PARTS
| Part Number | Description |
|---|
| 08808 | Module Assembly- ST-35-115 Multi-Point Optic Controller |
| 07923 | Module Assembly- ST-35-240 Multi-Point Optic Controller |
| Temperature Range: | -40° to +140° F (-40° to +60° C) |
| Weight: | 28 lbs. (12.7 kgs.) |
| Response Time: | 0.5 seconds maximum |
| Approvals: | ST-35: FM for use in Class 1, Division 1, Group D hazardous locations |
| Power Requirements: | 100–130 VAC, 50/60 Hz, 20 W max, 200–250 VAC, 50/60 Hz, 20 W max |
| Connections: | Provided by internal terminal strips |
| Output Relay: | One normally open volt-free contact, rated 250 VAC 5A Resistive; energized when the sensors are dry |
| Output Control Fuse: | Internal 5 Ampere |
| Housing Options: | Consult Scully for optional epoxy painted housings for corrosive atmospheres |
NOTE: For maximum safety, use only in conjunction with sensors manufactured by Scully to not jeopardize the conditions of these approvals.
