SeeLevel Tank Monitors

Accurate and reliable RV tank monitors

The RV industry addresses one of the top 4 peeves of RVers! Inaccurate and unreliable tank level monitors

The solution has arrived with the SeeLevel range of tank monitors from Garnet Industries:

  • Field proven technology with thousands of successful OEM and after-market installations
  • High reliability reduces warranty costs and improves customer satisfaction
  • Advanced sensing technology: the tank sensor does not foul or need calibration, and the lever accuracy is with 1/2 inch!
  • A single wire bus connects all three senders to the display, saving wire and avoiding connection errors
  • Simple installation, compact size, full features, extensive diagnostics, low price: the choice is obvious!

The History of the SeeLevel RV Gauge

A few weeks after Garnet's marketing manager, Don Shapansky, purchased a new high end fifth wheeler, the tank gauges began to fail. As Don travelled full time through camp-grounds, and talked to other RV owners, it became apparent that this was a widespread problem with no solution. Not only was this nuisance, but substantial flood damage to RV's was also occurring due to the primitive water and waste management systems

Since Garnet was already a successful company in level gauging for the industrial market with unique and reliable products, it was a logical step to address the RV market with a whole new approach to tank gauging. The marketing and engineering teams at Garnet collaborated to determine the features that this new gauge was to have. They were (and are) as follows:

  1. High reliability, the gauge had to perform as well as new for many years
  2. High accuracy, much better that 1/3 or 1/4 tank that was current in the market
  3. Easy to install, since it would be aimed at both end users and manufacturers.
  4. Attractive user interface, to fit the decor of both entry level and high end RV's
  5. Reasonable pricing to make it accessible to the entire industry
  6. Built in diagnostics, so that if a problem did develop, it could be found quickly and repaired
  7. Simple to operate, so that any RV owner would feel confident using the system

Those criteria led Garnet to determine the appropriate technology for the system:

  • To achieve reliability, the sensing had to be done from outside the tank, since any internal components exposed to the waste would get fouled. A special, high strength, low surface energy adhesive was sourced to ensure long term adhesion to the tank. No effort has been spared to ensure a reliable product. An example: test tanks were lined with a variety of nasty materials to simulate waste build-up, and sender parameter were measured and documented using custom built test fixtures
  • To achieve accuracy, the system had to be digital, since analog systems drift and need regular recalibration. The digital capacitance system used is self-calibrating, with accuracy based on the physical position of the sender components, not on the characteristics of the tank contents. To display an accurate quantity, high resolution LED bar graphs or 3 digit numerical readouts are used to show percentage of full
  • To achieve ease of installation, the tank sender had to be readily configured to a variety of tank heights, which dictate a simple "cut to required length" approach. No additional wiring could be required, so the senders had to receive power and communicate over a single wire. The display panels had to be compact to fit into existing gauge spaces
  • To achieve low cost, advanced manufacturing techniques were required. New manufacturing equipment was obtained, and new assembly techniques were developed
  • To achieve advanced diagnostic capability, an advanced microprocessor based system was required. Fully 50% of the software in the system is dedicated to diagnostics

After much thinking, discarding and refining of ideas, research, testing, field trials, years of continuous improvement and expansion of the model line, the Garnet SeeLevel line of RV gauges stands as the ultimate solution to RV tank gauging. Nothing else even comes close

And the process continues. Future improvements include more advanced RV system automation, remote communication interfaces for the upcoming RV diagnostic bus, and more models to fit every coach and tow-able niche.

Model 707

SeeLevel 707 Call us

Features

  • Entry level system designed specifically for OEM's
  • Provides accurate nine point tank level information
  • Fresh, grey and black water tanks are monitored using Garnet's proprietary external level sensing technology. This ends fouling problems caused by debris build-up in the holding tank
  • LPG tank connection compatible with existing electric senders
  • Uses common industry connector for ease of installation and servicing
Resolution: 1/4 inch (6mm) or 1/8 tank, whichever is greater
Accuracy: ± 5% or better from the senders, display shows every 1/8 tank
Operating temperature range: 0 to +60°C
Sender materials: 0.008" thick glass epoxy circuit board with conformal coating for circuit protection. Laminated on the back with 3M 300LSE Bonding Adhesive
Display mounting panel: Black panel, approximately 146mm wide x 95mm high x 25mm deep. Panel screws to wall
System power requirements: Display requires 12 volts from the RV battery, the system will function from 11 volts to 16 volts. Current drain is less than 200mA
Wiring: Two wire conductor required from the display to each sender. 12 V power and ground required for display. Single wire required for LPG sender if sender grounded at tank
LPG sender characteristics: Display will work with an LPG sender maximum resistance of 50 ohms to 500 ohms. Display shows increasing level as resistance increase. Systems must be calibrated with the LPG tank full

Models 709 and 709-4

SeeLevel 709 $359 inc. GST
SeeLevel 709-4 $464 inc. GST

Features

  • Full features system designed specifically for OEMs
  • Provides accurate tank level information using percentage of full readout
  • Tanks are monitored using Garnet's proprietary external level sensing technology. This ends fouling problems caused by debris build-up in the holding tank. Detailed diagnostic information monitors sender operation
  • Measures tanks up to 12 inches tall with a single sender or 24 inches tall with dual senders
  • Tank sender connect to display via a one wire bus which saves wiring costs
  • LPG tank connection compatible with existing electric senders
  • Calibrate LPG at first fill of tank, or it can be factory calibrated
  • Uses common industry connector for ease of installation and servicing
  • Multiple versions meet the needs of differing configurations:
709 Three Holding Tanks, Battery and LPG Tank
709-4 Four Holding Tanks and Battery
Resolution: 3/8 inch (10mm)
Accuracy: ± 10% or better, limited by resolution and tank shape
Operating temperature range: 0 to +60°C
Sender materials: 0.008" thick glass epoxy circuit board with conformal coating for circuit protection. Laminated on the back with 3M 300LSE Bonding Adhesive
Display mounting panel: Black panel, approximately 102mm wide x 71mm high x 25mm deep. Panel screws to wall. Required cut-out size is 76mm wide x 46mm high
System power requirements: Display requires 12 volts from the RV battery, the system will function from 11 volts to 16 volts. Current drain is less than 200mA
Wiring: Common two wire conductor (signal and ground) required from the display to each sender. 12 V power and ground required for display. Single wire required for LPG sender if sender grounded at tank
LPG sender characteristics: Display will work with an LPG sender maximum resistance of 50 ohms to 500 ohms. Display shows increasing level as resistance increase. System must be calibrated with the LPG tank full, or can be factory calibrated

Models 711 and 711T

SeeLevel 711 $475 inc. GST
SeeLevel 711T $495 inc. GST

Features

  • Provides accurate tank level information in percentage of full
  • Fresh, grey and black water tanks are monitored using Garnet's proprietary external level sensing technology. This ends fouling problems caused by debris build-up in the holding tank
  • Measures tanks up to 17 inches tall with a single sender or 33 inches tall with dual senders
  • Details diagnostic information monitors sender operation
  • Uses common industry connector for ease of installation and servicing
  • Model 711 - may be used as a primary display inside the coach or as a secondary display in the servicebay
  • Model 711T - has a built in temperature sensor
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Resolution: 1/4 inch (6mm)
Accuracy: ± 5% or better, limited by resolution and tank shape
Operating temperature range: 0 to +60°C
Sender materials: 0.008" thick glass epoxy circuit board with conformal coating for circuit protection. Laminated on the back with 3M 300LSE Bonding Adhesive
Display mounting panel: Black panel, approximately 120mm wide x 83mm high x 25mm deep. Panel screws to wall. Required cut-out size is 95mm wide x 57mm high
System power requirements: Display requires 12 volts from the RV battery, the system will function from 11 volts to 16 volts. Current drain is less than 200mA
Wiring: Two wire conductor required from the display to each sender and external temperature sensor. 12 V power and ground required for display
Temperature Sensor: Available of 711T version only Semiconductor sensor with integral A/D converter. Accuracy ±1.5°C

Models 712FF, 712LT and 712TT

SeeLevel 712FF $682 inc. GST
SeeLevel 712LT $504 inc. GST
SeeLevel 712TT $515 inc. GST

Features

  • Full featured system designed specifically for OEM's
  • Provides accurate tank level information using percentage of full readout
  • Fresh, grey and black water tanks are monitored using Garnet's proprietary external level sensing technology. This ends fouling problems caused by debris build-up in the holding tank. Detail diagnostic information monitors sender operation
  • Measures tanks up to 17 inches tall with a single sender or 33 inches tall with dual senders
  • LPG tank connection compatible with existing electric senders
  • LPG auto calibrates at first fill of tank
  • Uses common industry connector for ease of installation and servicing
  • Multiple versions meet the needs of differing configurations:
712FF Four Holding Tanks, LPG Tank and Battery
712LT Three Holding Tanks, LPG Tank , Inside Temperature and Water Pump & Heater Switches
712TT Three Holding Tanks, LPG Tank and Inside & Outside Temperature
Resolution: 1/4 inch (6mm)
Accuracy: ± 5% or better, limited by resolution and tank shape
Operating temperature range: 0 to +60°C
Sender materials: 0.008" thick glass epoxy circuit board with conformal coating for circuit protection. Laminated on the back with 3M 300LSE Bonding Adhesive
Display mounting panel: Black panel, approximately 171mm wide x 95mm high x 25mm deep. Panel screws to wall. Required cut-out size is 146mm wide x 70mm high
System power requirements: Display requires 12 volts from the RV battery, the system will function from 11 volts to 16 volts. Current drain is less than 200mA
Wiring: Two wire conductor required from the display to each sender and external temperature sensor. 12 V power and ground required for display. Single wire required for LPG sender if sender grounded at tank
LPG sender characteristics: Display will work with an LPG sender maximum resistance of 50 ohms to 500 ohms. Display shows increasing level as resistance increases. System must be calibrated with the LPG tank full
Click here for a PDF brochure on the SeeLevel 712

Models 713 and 713CC

SeeLevel 713 $888 inc. GST
SeeLevel 713CC $914 inc. GST

Features

  • Provides accurate tank level information in percentage of full
  • Fresh, grey and black water tanks are monitored using Garnet's proprietary external level sensing technology. This ends fouling problems caused by debris build-up in the holding tank
  • Measures tanks up to 17 inches tall with a single sender or 33 inches tall with dual senders
  • Detailed diagnostic information monitors sender operation
  • Has built in temperature sensor
  • 713CC Model available with LPG level and temperature combined
Resolution: 1/4 inch (6mm)
Accuracy: ± 5% or better, limited by resolution and tank shape
Operating temperature range: 0 to +60°C
Sender materials: 0.008" thick glass epoxy circuit board with conformal coating for circuit protection. Laminated on the back with 3M 300LSE Bonding Adhesive
Display mounting panel: Black panel, approximately 70mm wide x 120mm high x 25mm deep. Panel screws to wall. Required cut-out size is 60mm wide x 95mm high
System power requirements: Display requires 12 volts from the RV battery, the system will function from 11 volts to 16 volts. Current drain is less than 200mA
Wiring: Two wire conductor required from the display to each sender and external temperature sensor. 12 V power and ground required for display
Temperature sensor: Semiconductor sensor with integral A/D converter. Accuracy ±1.5°C
Click here for a PDF brochure on the SeeLevel 713 and 713CC