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CTD - Conductivity Temperature Depth : EMP 2000
CTD - Conductivity Temperature Depth : EMP 2000 : Description
The EMP 2000 is a field proven instrument capable of monitoring a wide variety of water quality parameters. The EMP-2000 comes standard with conductivity and pressure sensors, and can support as many as 10 additional sensors (see Sensor Information for the list of available sensors). The instrument is capable of deployments to 300m.
CTD - Conductivity Temperature Depth : EMP 2000 : Summary Information:
| Name: | EMP 2000 | | Category: | CTD - Conductivity Temperature Depth | | Model: | n/a | Number: | n/a | | Description: | The EMP 2000 is a field proven instrument capable of monitoring a wide variety of water quality parameters. The EMP-2000 comes standard with conductivity and pressure sensors, and can support as many as 10 additional sensors (see Sensor Information for the list of available sensors). The instrument is capable of deployments to 300m. | | Configuration: | - | | Application: | Ideal for environmental impact studies, aquaculture, watershed monitoring or harbour monitoring, the EMP 2000 can be used in-situ or for coastal profiles. | | Credibility Note: | n/a | | Case Study Link : | n/a | | Price: | Consult factory |
CTD - Conductivity Temperature Depth : EMP 2000 : Usage Information:
| Int Description: | ECM | | Max Number Of Sensors: | 8 | | Depth Rating: | 2000 | Housing Material: | 6061-T6 Aluminum Hard Anodized | | Weight Air: | 23.6 | | Weight Water: | 8.9 | | Length: | 1180 (overall length including sensors & shackle) | | Diameter: | 178 | | Power Source : | Internal | | Housing Notes: | n/a |
CTD - Conductivity Temperature Depth : EMP 2000 : Sensor Information:
| Name: | Conductivity | | Manufacturer: | Applied Microsystems | | Type: | Conductive | Model: | n/a | | Accuracy: | 0.01 mS/cm; 0.005 mS/cm precision | | Range: | 0 - 7 S/m or 0 - 70 mS/cm | | Response Time: | 25ms @ 1m/s | | Max. Frequency: | 25Hz | | Maximum Depth(m): | 6000m | | Resolution: | 0.0015 mS/cm | | Stability | n/a | | Location: | n/a | | Notes: | The Applied Microsystems conductivity sensor is short, with a length of just under 3 cm. Sensor length plays a critical role in determining resistance to the introduction of new flows into the sensor cavity, and hence response times. The equation for response time is as follows:
Response Time = (0.85 * Length of Sensor ) / Flow Speed.
Using the above, our conductivity sensor has a response time of 25 milliseconds in a 1.0 m/second flow environment and 255 milliseconds in a 0.1 m/second flow environment. Given the above, no pumps or flow tubes are required. |
| Name: | Dissolved Oxygen | | Manufacturer: | YSI | | Type: | Polarographic | Model: | n/a | | Accuracy: | 0.2 mg/l | | Range: | 0 to 15 mg/l | | Response Time: | 60s | | Max. Frequency: | Varies by CTD model (25Hz Micro, 10Hz Smart, 8Hz Plus) | | Maximum Depth(m): | 300 | | Resolution: | 0.01 mg/l | | Stability | n/a | | Location: | n/a | | Notes: | n/a |
| Name: | pH | | Manufacturer: | Innovative Sensors | | Type: | Combination Electrode | Model: | A23B-I1B2Z-Z1HZ | | Accuracy: | 0.1 pH | | Range: | 2 to 12 pH | | Response Time: | 15 seconds | | Max. Frequency: | Varies by CTD model (25Hz Micro, 10Hz Smart, 8Hz Plus or EMP) | | Maximum Depth(m): | 2000 | | Resolution: | 0.01 pH | | Stability | n/a | | Location: | n/a | | Notes: | n/a |
| Name: | ORP / Redox | | Manufacturer: | Innovative Sensors | | Type: | Combination Electrode | Model: | A23B-E1P0Z-D1HZ | | Accuracy: | ± 2 mV | | Range: | ± 2000 mV | | Response Time: | 15 seconds | | Max. Frequency: | 25-10-8 | | Maximum Depth(m): | n/a | | Resolution: | 1 mV | | Stability | n/a | | Location: | n/a | | Notes: | Requires CTD or EMP |
| Name: | Current | | Manufacturer: | Marsh McBirney | | Type: | Two Axis Electromagnetic 1.5" | Model: | n/a | | Accuracy: | ±2% of reading | | Range: | ± 300cm/s | | Response Time: | 5 s | | Max. Frequency: | Varies by instrument model (10Hz Smart or 8Hz on TWG and EMP) | | Maximum Depth(m): | n/a | | Resolution: | 0.1 cm/s | | Stability | n/a | | Location: | n/a | | Notes: | n/a |
| Name: | Pressure | | Manufacturer: | Keller | | Type: | Semiconductor bridge strain gauge | Model: | PA-10 | | Accuracy: | 0.05%FS | | Range: | Various to 6000 dbar | | Response Time: | 10ms | | Max. Frequency: | 25Hz | | Maximum Depth(m): | 6000m | | Resolution: | 0.005%FS | | Stability | n/a | | Location: | n/a | | Notes: | n/a |
| Name: | Turbidity | | Manufacturer: | D&A Instruments | | Type: | Optical backscatter | Model: | OBS3B or OBS3 | | Accuracy: | 1.5 NTU's | | Range: | 2000 NTU's | | Response Time: | 100 milliseconds | | Max. Frequency: | Varies by CTD model (25Hz Micro, 10Hz Smart, 8Hz Plus or EMP) | | Maximum Depth(m): | 500 / 2000 | | Resolution: | 0.1 NTU's | | Stability | n/a | | Location: | n/a | | Notes: | 500m version available in Delrin housing; 2000m version available in anodized aluminum |
| Name: | Heading | | Manufacturer: | KVH | | Type: | Flux Gate | Model: | KVHC100 | | Accuracy: | +/-0.5 degrees | | Range: | 0 to 360 degrees | | Response Time: | 100 milliseconds | | Max. Frequency: | Varies by instrument model (10Hz on Smart & ECM; 8Hz on TWG or EMP) | | Maximum Depth(m): | 6000m | | Resolution: | 0.1 degrees | | Stability | n/a | | Location: | n/a | | Notes: | n/a |
| Name: | PAR | | Manufacturer: | Licor | | Type: | Photo diode | Model: | LI-192SA | | Accuracy: | ± 5% in air traceable to National Bureau of Standards | | Range: | 0-3055 umols/sm2 (micromole) | | Response Time: | 10 microseconds | | Max. Frequency: | n/a | | Maximum Depth(m): | 340m | | Resolution: | 1 umol/sm2 (micromole) | | Stability | n/a | | Location: | n/a | | Notes: | Plus; Smart; Micro |
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