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Ravensgate -Â Model 300 -Sonic Water Level Measuring Device
Ensure an accurate well measurement with the Model 300 water level measuring device from Ravensgate Corporation in Ridgecrest, California. Uses acoustic air signals to measure the depth of the well. Adjustable temperature setting for sound velocity variation.
The SONIC method utilizes the air in a well to transmit an acoustic signal to the water surface, rather than introducing foreign objects into the well. Simply insert the measuring duct into the access port in the well cap, making sure the measuring duct extends completely through the well cap. Then just press the red “POWER ON” button, and the water level will be displayed after the first “ping,” typically. If an inaccurate reading is received, then the initial depth setting may have been incorrect. If so, simply change the depth setting and press the “POWER ON” button again, and the meter will provide a new reading.
Regional maps (USA only) and temperature tables for both Fahrenheit and Celsius are provided with each meter. For USA owners, the regional maps are divided into sections for your state. First, locate the region where the well is located on the state map. Next, use the corresponding regional number on the table to find the temperature setting for the appropriate month. Map tables may not be useful in regions with geothermal activity or anomalous subsurface conditions. For owners outside the USA (and for those with geothermal or anomalous conditions), it is necessary to know the well water temperature and the monthly average temperature in order for the meter to provide the most accurate reading.
For the best accuracy, it is necessary to compensate for the variation of sound velocity with well air temperature. Just simply adjust the temperature by using the “TEMP” toggle switch; pressing the switch up will raise the temperature and down will lower it. The device keeps track of the most recent setting.
The DEPTH switch optimizes the measuring capability for deeper wells. In the “normal” setting, the measurement range is 10 to 500 feet (3 to 150m). For the “Deep” setting, the measurement range is 200 to 1200 feet (60 to 350m).
How does our Sonic Water Level Meter work? Our Sonic Water Level Meter sends sound waves down into a well casing or borehole that is hard to access because of a crooked pipe, narrow tube, or other obstacles. When the sound waves bounce off the water’s surface, they return to the meter duct. The time traveled by the sound waves is measured and analyzed, and the data is displayed on the LCD screen as feet or meters.
Fast and accurate water level measurements in seconds, without downhole probes or transducers.
- No more lost tapes!
- No cross-contamination!
- No equipment to clean!
- Measures crooked wells!
- Measures up to 1,200 ft in 6 seconds
- Can be used with pitless adapters, stabilizers, cascading water, some well protrusions, and even when curves and bends are present
- The temperature switch allows users to adjust for variations in temperature that will affect sound velocity, resulting in more accurate measurements
- Accuracy:
- +/- 0.2ft (0.06m) for water levels less than 100 ft (30m)
- +/- 0.2% of depth reading for water levels 100 ft (30m) or greater
- LCD stays illuminated for 20 seconds, allowing user to record data elsewhere
- Can be used in English (Imperial) or Metric Units
The Model 300 Sonic Water Level Meter comes with:
- User guide
- Six inch well cap cover
- State Regional Temperature Map & Table (USA only)
- Fahrenheit/Celsius Temperature Table
- Microphone cap
Carrying Case available for purchase
- Sturdy polycarbonate
- Padded
- Waterproof
- Padeyes for additional security
- Spring loaded latches
Thank you for your interest in the Ravensgate Sonic Water Level Meter.
Current Model series:
- Model 300
- Model 300 DL: No longer in production
- SKB Carrying Case: (Sold separately)
The Model 300 Meter series allows the customer to change some parameters:
- Units of measure - English or metric
- Gain/Sensitivity - Variable or fixed; factory setting is variable
- Temperature - Adjustable during operational reading mode
- Ignore Distance - Allows meter to ignore a set distance before reading water level
- Time/Date - Allows time and date to be reset as needed
Specifications
Dimensions: (excluding duct)
- Length: 7 inches
- Height: 4 inches
- Width: 5 inches
- Measuring duct diameter: 5/8 inches.
- Measuring duct length: 2 inches.
Meter Enclosure: diecast aluminum
Weight: 3.5 lbs.
Power: 8, AA dry cell batteries
Performance: (2 inch to 10 inch well diameter)
Measurement range*:
- NORMAL: 10 to 500 feet
- DEEP: 200 to 1200 feet
Depth measurements: Displayed to the nearest tenth of a foot (0.1 ft).
Measurement accuracy:
- +/- 0.2 ft for water level less than 100 ft.
- +/- 0.2% of depth reading for water levels 100 ft. or greater.
- (Applies for casing diameters from 2 to 10 inches. Outside this range, accuracy may vary.)
* Under certain conditions, accuracy may exceed this limit or max range reduced: when the well casing is discontinuous; when the well casing is highly corroded or rough; when large obstructions, e.g. pipe joints or wiring exceed ½ the area of the well casing; if the well casing is less than 2 inches or greater than 10 inches in diameter.
Operating Temperature: 30 to 140 deg. F.
The outside or ambient air temperature does not affect the meter operation provided the meter and its components remain within the operating temperature range.
15-Day Trial
Purchased items may be returned within 15 days. If returned in UNDAMAGED CONDTION, the Purchase Price less shipping and a 20% restocking Fee will be refunded.
Limited Warranty
Components and workmanship: One year from date of purchase; limited to repair or replacement at manufacturers discretion as long as the top of the meter has not been opened. Ravensgate Corporation is not responsible for damage or loss due to misuse or inappropriate application. Diagnosis fee and shipping not covered by the limited warranty. A copy of the complete warranty is available from The Ravensgate Corporation.
- Static water level readings are obtained in three to six seconds
- Three seconds for Normal depths ranging between 10-feet to 500-feet
- Six seconds for Deep depths ranging between 200-feet and 1200-feet
- Unit of Measures
- English/Imperial
- Metric
- Gain/Sensitivity
- Fixed setting: depths less than 100-ft
- Variable setting: depths greater than 100-ft
- Factory setting
Temperature settings
- Temperature settings correct for the variation of the velocity of sound within the wellbore
- Error is 0.1% per degree of temperature error
- Adjustable during operation
- Depth measurements are best when the temperature setting equals the average ambient air temperature in the well casing
- Fahrenheit, Celsius, and United States regional temperature tables are provided
- Ignore depth settings adjust past pitless adapters, stabilizers, cascading water, and some well protrusions
- Normal Mode ignore depth range
- 10 to 65 ft. (3 to 20 m) in 1 ft. (0.5m) steps.
- factory setting is 10 ft. (3 m)
- Deep Mode ignore depth range:
- 200 to 600 ft. (60 to 200 m) in approx. 1 ft. (0.5 m) steps.
- factory setting is 200 ft. (60 m)
- Meter measurement accuracy
- Applies for well casing diameters of 2 to 10 inches (50 to 250 mm). Accuracy may vary outside this well casing range.
- +/- 0.2 ft. (+/- 0.06 m) for water level less than 100 ft. (30 m)
- +/- 0.2% of depth reading for water levels 100 ft. (30 m) or greater
- Exclusive of temperature setting errors.
- Meter calibrated for oxygen-gas environment within a well casing.
- Sonic Path
- Requires downward facing path with at least a 5/8-inch access
- Cabling will not interfere with the readouts provided half the casing space is available
- Sonic pulse travels down curves and bends
- Additional Information:
- Meter operates on eight AA 1.5V batteries (12V)
- Batteries do not operate well in extreme cold or heat
- Operating Temperature Range
- 32°F to 140°F (0°C to 60°C)
- The outside or ambient air temperature does not affect the Meter’s operation, provided the Meter and its components remain within the operating temperature range
- Wells near thermal activity should have ambient well air temperature calculated
- Fahrenheit/Celsius Temperature Guide
- Meter pulse will dissipate through slotted piping and rock fissures
- Protrusions within the well casing may create false depth readings
- Cascading water covering more than half the diameter of the borehole will effect depth reading
- Adjusting ignore distance may help get past protrusions and cascading water
- Methane gas mixtures may give erroneous depths
- Meter is water resistant, not water proof