Digiquartz® Depth Sensors provide the ultimate precision in water level measurements. Typical application accuracy of 0.01% is achieved even under difficult environmental conditions. Desirable characteristics include excellent long-term stability, 1 x 10–8 resolution, low power consumption, and high reliability.
The remarkable performance of these depth sensors is achieved through the use of a precision quartz crystal resonator whose frequency of oscillation varies with pressure-induced stress. A quartz crystal temperature signal is provided to thermally compensate the calculated pressure and achieve high accuracy over a broad range of temperatures. The depth sensors include waterproof housings with integral shock protection.
High accuracy, resolution, and stability make Digiquartz® Depth Sensors ideal for applications such as Tsunami detection, wave and tide gauges, platform leveling, underwater pipe laying, and as depth sensors in ROVs and AUVs.
All Depth Sensor ranges are available with either frequency outputs or integral intelligent electronics with bi-directional digital communications.
Dual RS-232 and RS-485 interfaces allow complete remote configuration and control of all operating parameters, including resolution, sample rate, and choice of engineering units, integration time, and sampling requests. Commands include: Single sample and send, synchronized sample and hold, continuous sample and send, and special burst sampling modes.
New and enhanced features include support for both serial loop and multi-drop networking, selectable baud rates up to 115200 baud, synchronization of measurements with timebased integration, 2 or 4 wire RS-485 transmission distances greater than 1 kilometer, improved high-speed continuous pressure measurements, a power management “sleep” mode, data formatting features, and unit identification commands.
RANGES
- Absolute: 0 ... 10 m H2O to 0 ... 7000 m H2O, 0 ... 30 psia to 0 ... 10000 psia
- Gauge: 0 ... 10 m H2O to 0 ... 140 m H2O, 0 ...15 psig to 0 ... 200 psig
FEATURES
- 0.01% Accuracy
- 1 x 10–8 Resolution
- Unique Anti-Fouling Port
- Low Power Consumption
- High Stability and Reliability
- Fully Calibrated and Characterized
- ISO 9001 Quality System – NIST Traceable
- Frequency Outputs or Dual RS-232 and RS-485 Interfaces
APPLICATION AREAS
- Hydrology
- Oceanography
- Tsunami Detection
- Wave and Tide Gauges
- Offshore Platform Leveling
- Dam and Reservoir Level Sensing
- Underwater Pipe Laying and Surveying
- Remotely Operated and Autonomous Underwater Vehicles
