Digitize mechanical tank gauges for predictive monitoring
Hall-effect retrofit sensing integrated into the FoxInsights intelligence platform.
Built for distributors and operators managing tanks at scale.
Request a demo
Digital retrofit monitoring for mechanical tank gauges
FoxHall is a Hall-effect sensor that replaces existing Rochester mechanical gauge assemblies with a digital unit — including an integrated digital display for on-site level checking. It captures fill level data from the gauge position and transmits it to FoxPortal, enabling remote visibility and consumption-based refill planning without structural tank modification.
Compatible with Rochester Junior, Senior, and SRG 705 gauge connectors. ATEX Zone 1 certified for LPG environments.
Core Capabilities
- Replaces Rochester mechanical gauge with a digital unit — no tank modification required
- Integrated digital display for on-site fill level checking
- Hall-effect magnetic sensing detects gauge float movement
- ATEX Zone 1 certified: EPS 22 ATEX 1 354 X / II 2G Ex ib IIA T3 Gb
- Gauge compatibility: Rochester Junior, Senior, SRG 705
- Battery lifetime: >10 years at 1 measurement/day
- Connectivity: Bluetooth, NB-IoT, LTE Cat-M
- Transmission: 1× daily (configurable)
Technical Specifications
- Measurement
- Hall-effect magnetic sensing
- Range
- 5–95%
- Accuracy
- ±4%
- Display
- Integrated digital display
- Connectivity
- Bluetooth, NB-IoT, LTE Cat-M
- Battery
- >10 years at 1 measurement/day
- Power source
- 3× Energizer Ultimate Lithium L91 FR6 (replaceable)
- Operating temperature
- −20°C to +50°C
- Protection
- IP68
- ATEX
- Zone 1 / EPS 22 ATEX 1 354 X / II 2G Ex ib IIA T3 Gb
- Gauge compatibility
- Rochester Junior, Senior, SRG 705
- Mounting
- Rochester adapter (Junior/Senior/SRG 705)
Where FoxHall Fits
FoxHall is the right choice when existing Rochester mechanical gauges need to be brought into a remote monitoring system without replacing tank infrastructure.
- LPG distribution fleets with a large Rochester mechanical gauge footprint
- B2B LPG fleet operators requiring ATEX Zone 1 certified hardware on existing Rochester gauge infrastructure
- Multi-site operations requiring fast rollout without structural changes
- Environments where tanks are serviced on periodic cycles (daily transmission is sufficient)
- ATEX Zone 1 LPG installations requiring certified hardware
Industry applications: LPG
Ideal Use Cases
- Distributors with 50–500+ LPG tanks on Rochester gauges seeking remote visibility
- Operations transitioning from manual gauge checks to structured digital monitoring
- Legacy heating oil installations where radar or pressure sensing is not viable due to gauge configuration
- Large fleets where passive daily monitoring is sufficient and on-site display interaction is minimal
Limitations
- Requires a compatible Rochester mechanical gauge — not suitable for worn, damaged, or non-standard gauges
- Measurement accuracy (±4%) depends on the quality of the underlying gauge
- Not suitable for 4″ or 8″ gauge formats — use Hall Pro for those configurations
- Passive remote device — daily transmission cycle only; not designed for active operational use during filling
When to Use a Different Sensor
FoxHall is optimised for passive remote monitoring on Rochester gauges. Consider an alternative when:
- Active on-site level visibility is required during filling or collection operations (→ use Hall Pro)
- The gauge format is 4″ or 8″ — not compatible with FoxHall (→ use Hall Pro)
- The tank does not have a compatible Rochester gauge — use a direct sensing approach instead (→ use FoxRadar Gen 4 or FoxPressure Gen 4)
- The required ATEX zone is Zone 0 rather than Zone 1 (→ use Hall Pro or Pressure EX)
Role Within the FoxInsights System
FoxHall extends remote monitoring to tanks that cannot be instrumented with direct radar or pressure sensors.
- Tank level data transmitted to FoxPortal daily
- Input for consumption-based forecasting and refill timing
- Portfolio-wide visibility across legacy gauge infrastructure
- Planning support without requiring structural changes to existing tanks
Execution remains with your dispatch and logistics teams.
Integrated with FoxPortal
FoxHall data feeds directly into the FoxPortal platform for portfolio-wide visibility and forecast-based planning.
Explore the platform →