This product is not available for new orders. We recommend ordering: CS475A.
| Services Available |
|---|
Resumen
El CS475 es un sensor tipo radar que monitoriza el nivel de agua en ríos, lagos, mar, depósitos, etc... Puede medir distancia hasta 20 metros. La salida de señal del CS475 es digital SDI-12. La mayoría de nuestros dataloggers pueden medir la señal SDI-12.
Leer másVentajas y características
- Conformidad FCC para uso en el exterior (FCC IC number M01PULS616263)
- Ideal en areas que los sensores sumergidos pueden dañarse por la corrosión, contaminación, escombros inundaciones, descargas eléctricas o vandalismo
- Compatible con la mayoría de dataloggers Campbell Scientific
- Bajo mantenimiento - sin partes móviles que reducen significantemente costes de mantenimiento y tiempo
- Low power consumption
- Rugged enough for harsh environments—NEMA rated 4X
- Amplio rango de temperatura de funcionamiento (-40° a +80°C)
Imágenes
Descripción detallada
The CS475 emits short microwave pulses and then measures the elapsed time between the emission and return of the pulses. The elapsed time measurement is used to calculate the distance between the sensor and the target (e.g., water, grain, slurry). The distance value can then be used to determine depth.
Productos similares
Preguntas frecuentes
Número de FAQs relacionadas con CS475: 5
Expandir todoDesplegar todo
-
The thermistor is located approximately 3 mm (0.125 in.) back from the probe tip.
-
When these sensors are purchased, the following calibration services are offered: TEMPCAL and TEMPCAL2.
- TEMPCAL provides a single-point calibration and a calibration certificate. The single-point calibration determines the offset at 25°C with an uncertainty of ±0.05°C.
- TEMPCAL2 provides a two-point calibration and a calibration certificate. The two-point calibration determines offsets at 30°C and 65°C with an uncertainty of ±0.05°C.
For both of these services, calibration can be made at different values if it is requested by the purchaser at the time of purchase. In addition, both of these calibration services can be requested after sensor purchase using a return material authorization (RMA) number. To request an RMA number, refer to the Repair and Calibration page.
-
The sensor/probe consists of a non-linear thermistor configured with a precision resistor in a half-bridge circuit, as shown in the product’s manual:
- Model 107 Temperature Probe Instruction Manual
- Model 108 Temperature Probe Instruction Manual
- 108-LC Temperature Probe for MetData1 Instruction Manual
- Model 109 Temperature Probe Instruction Manual
To measure the sensor/probe, the measurement device has to provide a precision excitation voltage (Campbell Scientific dataloggers use 2000 mV), measure the voltage across the precision resistor, determine the thermistor resistance (Ohm's law), and convert the resistance to temperature using the Steinhart-Hart equation.
The Steinhart-Hart equation is 1/T = A + Bln(R) + C(ln(R))3 where:
- T is the temperature in Kelvin
- R is the resistance at T in ohms
- A, B, and C are the Steinhart-Hart coefficients, which vary depending on the temperature range of interest, as well as the type and model of the thermistor
For the 107-L, 107-LC, 108-L, and 108-LC, the following are the coefficients for the Steinhart-Hart equation:
- A = 8.271111E-4
- B = 2.088020E-4
- C = 8.059200E-8
For the 109-L, the following are the coefficients for the Steinhart-Hart equation:
- A = 1.129241E-3
- B = 2.341077E-4
- C = 8.775468E-8
-
Note the difference between calibration and a field check. Calibration cannot be done in the field, as it requires an experienced technician and specialized equipment.
Field checks of measurements can be done to determine if the data make sense with the real-world conditions. Follow these steps to field check a sensor:
- Find a second sensor of the same type as the installed sensor whose data is in question. The second sensor will be used as a benchmark sensor and should be known to be accurate or recently calibrated.
- At the site, take readings using both sensors under the same conditions. The best practice is to measure both sensors side-by-side at the same time. Note that the sensors will never have the exact same measurement.
- Depending on the sensor model, if the difference in the readings of the installed and benchmark sensors is greater than the sum of the accuracies for both sensors, either return the installed sensor to Campbell Scientific for calibration or replace the appropriate chip.
- The 107, 108, 109, 110PV-L, and BlackGlobe-L temperature sensors can be calibrated.
- The HC2S3-L and HMP155A-L temperature and relative humidity sensors can be calibrated.
- The CS215-L has a replaceable chip for temperature and relative humidity. For more information, refer to the “Maintenance and Calibration” section of the CS215 instruction manual.
- The HMP60-L has a replaceable chip for relative humidity only. For more information, refer to the “Maintenance” section of the HMP60 instruction manual.
-
To incorporate a sensor that is compatible with wireless sensor interfaces into a wireless network, a CWS900-series wireless sensor interface is needed, as well as an A205 CWS-to-PC interface to configure it.
Compatibilidad
Nota: lo siguiente muestra información de compatibilidad notable. No es una lista de todos los productos compatibles.
Especificaciones
| Conformidad | FCC approved for outdoor use (FCC IC number M01PULS616263) |
| Rango de medida | 50 mm to 20 m (2 in. to 65 ft) |
| Precisión | ±5 mm (±0.2 in.) over entire measurement range |
| Resolución | 1 mm (0.04 in.) |
| Output Options | SDI-12 |
| Radar Frequency | ~26 GHz |
| Electromagnetic Compatibility | Emission to EN 61326; Electrical Equipment Class B |
| Pulse Energy | 1 mW maximum |
| Beam Angle | 10° |
| Input Voltage | 9.6 to 16 Vdc |
| Surge Protection | 1.5 KVA |
| Rango temperatura funcionamiento | -40° to +80°C |
| Temperature Sensitivity |
|
| Vibration Resistance | Mechanical vibrations with 4 g and 5 to 100 Hz |
| Housing Rating | NEMA 4x |
| Housing Material | Aluminum, coated IP66/68 |
| Horn Material | PVDF encapsulated plastic |
| Typical Sleep Current Drain | 4.7 mA (with 12 V power supply) |
| Typical Measurement Current Drain | 14 mA (with 12 V power supply) |
| Side Cap Diameter | 8.6 cm (3.4 in.) |
| End Cap Diameter | 8.6 cm (3.4 in.) |
| Horn Diameter | 7.5 cm (3 in.) |
| Head Width | 11 cm (4.3 in.) |
| Horn Length | 13.7 cm (5.4 in.) |
| Total Length | 26.6 cm (10.5 in.) |
| Peso |
|
Documentos
Folletos producto
Casos de aplicación
The Jukskei River is one of the largest rivers in Johannesburg, South Africa. The river......leer más
Water and Earth Technologies (WET), a Campbell Scientific integrator, is a water resources and environmental engineering firm.......leer más
Water and Earth Technologies (WET), a Campbell Scientific integrator, is a water resources and environmental engineering firm.......leer más