Van Essen - Model Diver Family -Water Level - Pressure transducers with integrated data logger
The Diver product suite provides advanced and dependable groundwater monitoring solutions, featuring an integrated data logger and power source capable of measuring fluid levels, temperature, and electric conductivity. Developed for applications in urban water management and water resource management, Diver data loggers facilitate comprehensive data collection, making them suitable for long-term water level monitoring projects such as aquifer storage and recovery. Built to endure challenging environmental conditions, the Diver products are also appropriate for coastal zone aquifer management.Van Essen Diver logging sensors are submersible pressure transducers and data loggers for long-term uninterrupted, real-time water level monitoring when submerged at a fixed level under the water surface. The pressure sensor measures the equivalent hydrostatic pressure of the water above the sensor diaphragm to calculate the total water depth. The Diver autonomously measures pressure and temperature and records them in its internal memory. The Diver is ideal for ground and surface water level applications.
In addition to internal data storage, the Divers can be connected to Stevens’ data logger or data telemetry systems with the Diver-SDI SDI-12 output adapter, allowing the Diver to be used for real-time data monitoring applications.
Manual data download in the field from a Diver’s internal storage can be done by utilizing the optional USB Interface Cable and connecting the diver directly to a desktop or laptop PC.
All Divers have a 3 year warranty, up to 10 years battery life, and can be used from 300 m below to 5000 m above sea level.
Superior Long-term Performance
The TD-Diver is based on an ingenious and proven concept and is acknowledged as the most reliable instrument for the autonomous measuring and recording of groundwater level and temperature. Its internal working memory of 72,000 measurements per parameter provides sufficient capacity to perform one measurement every 15 minutes for over 2 years. For each measurement, the Diver registers the date and time, groundwater level, and temperature.
Technical Specification
- Length: 4.33 inch
- Diameter: 0.87 inch
- Weight: 3.7 ounce
- Memory: 72,000 measurements with backup;
continuous and fixed length memory - Wetted parts
- housing: stainless steel 316L
- o-rings: Viton ®
- pressure sensor: piezoresistive ceramic
- cap / nose cone: Nylon PA6 30% glass fiber / ABS
- Battery life: up to 10 years (dependent on usage)
- Sample interval: ½ second to 99 hours
- Sample methods: fixed
Temperature
- Range: -4 to 176 °F
- Calibrated: 32 to 122 °F
- Accuracy:+ ±0.18 °F
- Resolution: 0.018 °F
Pressure
- DI 801
- Range: 33 ftH2 O
- Accuracy: ± 0.2 inH2 O
- Resolution: 0.02 inH2 O
- DI 802
- Range: 66 ftH2 O
- Accuracy: ± 0.4 inH2 O
- Resolution: 0.04 inH2 O
- DI 805
- Range: 164 ftH2 O
- Accuracy: ± 1.0 inH2 O
- Resolution: 0.07 inH2 O
- DI 810
- Range: 328 ftH2 O
- Accuracy: ± 2.0 inH2 O
- Resolution: 0.14 inH2 O
Reference of Choice
The Baro-Diver ensures that you accurately capture changes in atmospheric pressure. Conveniently priced and easy to deploy, one Baro-Diver covers a radius of up to 15 km, depending on the topography. The Baro-Diver can also be used for measuring shallow water levels up to approximately 3 feet. The Baro-Diver has an internal working memory capable of storing 72,000 measurements per parameter. For each measurement, the Baro-Diver simultaneously registers barometric pressure, air temperature, date and time.
Technical Specification
- Length: 4.33 inch
- Diameter: 0.87 inch
- Weight: 3.7 ounce
- Memory: 72,000 measurements with backup;
continuous and fixed length memory - Wetted parts
- housing: stainless steel 316L
- o-rings: Viton ®
- pressure sensor: piezoresistive ceramic
- cap / nose cone: Nylon PA6 30% glass fiber / ABS
- Battery life: up to 10 years (dependent on usage)
- Sample interval: ½ second to 99 hours
- Sample methods: fixed
Temperature
- Range: -4 to 176 °F
- Calibrated: 14 to 122 °F
- Accuracy: ± 0.18 °F
- Resolution: 0.018 °F
Pressure
- Part number: DI 800
- Range: 4.9 ftH2 O
- Accuracy: ± 0.2 inH2 O
- Resolution: 0.01 inH2 O
Compact Size
Measuring only 3.46” in length and 0.71” in diameter, the Micro-Diver is the smallest Diver capable of accurately recording groundwater levels and temperature. The Micro-Diver is specifically designed for monitoring wells or drive-points too small to accommodate larger dataloggers. In addition to its compact size, the MicroDiver’s memory capacity can store up to 48,000 measurements per parameter - almost one measurement every ten minutes for an entire year.
Technical Specification
- Length: 3.46 inch
- Diameter: 0.71 inch
- Weight: 1.6 ounce
- Memory: 48,000 measurements;
fixed length memory - Wetted parts
- housing: stainless steel 316L
- o-rings: Viton ®
- pressure sensor: piezoresistive ceramic
- cap / nose cone: Nylon PA6 30% glass fiber / ABS
- Battery life: up to 10 years (dependent on usage)
- Sample interval: ½ second to 99 hours
- Sample methods: fixed, event dependent, averaging, and pumping test
Temperature
- Range: -4 to 176 °F
- Calibrated: 32 to 122 °F
- Accuracy: ±0.18 °F
- Resolution: 0.018 °F
Pressure
- DI 601
- Range: 33 ftH2 O
- Accuracy: ± 0.4 inH2 O
- Resolution: 0.02 inH2 O
- DI 602
- Range: 66 ftH2 O
- Accuracy: ± 0.8 inH2 O
- Resolution: 0.04 inH2 O
- DI 605
- Range: 164 ftH2 O
- Accuracy: ± 2.0 inH2 O
- Resolution: 0.07 inH2 O
- DI 610
- Range: 328 ftH2 O
- Accuracy: ± 4.0 inH2 O
- Resolution: 0.014 inH2 O
Corrosion Proof
Monitoring groundwater under potentially corrosive conditions, such as brackish water and seawater, requires a robust and durable datalogger. The ceramic-shelled Cera-Diver is designed specifically for such environments. This highly reliable and compact Diver measures groundwater levels with a typical accuracy of ±0.05% full scale. The Cera-Diver is equipped with a memory for 48,000 measurements per parameter.
Technical Specification
- Length: 3.54 inch
- Diameter: 0.87 inch
- Weight: 1.8 ounce
- Memory: 48,000 measurements;
fixed length memory - Wetted parts
- housing: ceramic (ZrO2 )
- o-rings: Viton ®
- pressure sensor: piezoresistive ceramic
- cap / nose cone: Nylon PA6 30% glass fiber / ABS
- Battery life: up to 10 years (dependent on usage)
- Sample interval: ½ second to 99 hours
- Sample methods: fixed, event dependent, averaging, and pumping test
Temperature
- Range: -4 to 176 °F
- Calibrated: 32 to 122 °F
- Accuracy: ±0.18 °F
- Resolution: 0.018 °F
Pressure
- DI 701
- Range: 33 ftH2 O
- Accuracy: ± 0.2 inH2 O
- Resolution: 0.02 inH2 O
- DI 702
- Range: 66 ftH2 O
- Accuracy: ± 0.4 inH2 O
- Resolution: 0.04 inH2 O
- DI 705
- Range: 164 ftH2 O
- Accuracy: ± 1.0 inH2 O
- Resolution: 0.07 inH2 O
- DI 710
- Range: 328 ftH2 O
- Accuracy: ± 2.0 inH2 O
- Resolution: 0.14 inH2 O
3 Parameters in 1 Housing
Where there is a need to monitor groundwater levels and saltwater intrusion, injected wastewater, or contamination from chemical discharges and landfill sites, the CTD-Diver with its rugged, corrosion proof ceramic housing, is the instrument of choice. The CTD-Diver is equipped with a four-electrode conductivity sensor that measures electrical conductivity from 0 to 120 mS/cm. There are two options for measuring conductivity: true or specific conductivity at 77 °F. Additionally, pressure and temperature are measured and recorded.
Technical Specification
- Length: 5.3 inch
- Diameter: 0.87 inch
- Weight: 3.4 ounce
- Memory: 48,000 measurements;
fixed length memory - Wetted parts
- housing: ceramic (ZrO2 )
- o-rings: Viton ®
- pressure sensor: piezoresistive ceramic
- cap / nose cone: Nylon PA6 30% glass fiber / ABS
- Battery life: up to 10 years (dependent on usage)
- Sample interval: 1 second to 99 hours
- Sample methods: fixed, event dependent, averaging, and pumping test
Temperature
- Range: -4 to 176 °F
- Calibrated: 32 to 122 °F
- Accuracy: ± 0.18 °F
- Resolution: 0.018 °F
Conductivity
- Range: 1 0 to 120 mS/cm
- Range: 2 0 to 30 mS/cm
- Accuracy: ± 1% of reading
- Resolution: 0.1% of reading
Pressure
- DI 271
- Range: 33
- Accuracy: ± 0.2
- Resolution: 0.02
- DI 272
- Range: 164
- Accuracy: ± 1.0
- Resolution: 0.07
- DI 273
- Range: 328
- Accuracy: ± 2.0
- Resolution: 0.14