Features:
- HydroTech's ultra-rugged 8 C cell housing is machined from one solid piece, no gluing. Reduce the unit's buoyancy, reduce the risk of leaks and damage, and extend your depth deployment capabilities.
- Available with Hach® LDO
- Memory is included on every sonde
- Integrate one additional parameter
- RS-485 communications available
- Improved power management
- Seven built-in expansion ports configured to fit your specific needs
- Measures up to 15 parameters simultaneously
- Optimized for long-term, unattended deployments
- Central cleaning system wipes away fouling from DO, pH, ISE's, Chlorophyll, Blue-Green Algae, Rhodamine, and Turbidity sensors
OEM DS5 unit used in the DepthX project by StoneAerospace in collaboration with NASA and the university of Texas to validate data at depths beyond 200 m
Specs:
- Size: Outer diameter: 3.5”/8.9 cm
- Length: 23”/58.4 cm
- Weight: 7.4 lbs/3.35 kg (typical)
- Computer Interface: RS-232, SDI-12, RS-485
- Memory: 120,000 measurements
- Battery Supply: 8 C batteries
- Operating Temperature: -5 to 50° C
- Maximum Depth: 225 m
Sensors:
The LDO sensor by Hach uses luminescent dissolved oxygen technology, which has no membranes to maintain.
- Range: 0 to 20 mg/L
- Accuracy: +/- 0.1 up to 8 mg/L; +/- 0.2 above 8 mg/L
- Resolution: 0.01 mg/L
The Temperature sensor is a 30k ohm variable resistance thermistor. The temperature sensor is included with every Hydrolab sonde.
- Range: -5 to 50 °C
- Accuracy: +/- 0.10 °C
- Resolution: 0.01 °C
The Conductivity sensor uses four graphite electrodes in an open cell design.
- Range: 0-100 mS/cm
- Accuracy: ± (0.5% of reading + 0.001 mS/cm)
- Resolution: 0.001
The pH sensor uses glass bulb and refillable reference electrode.
The ORP sensor uses a simple platinum band that donates or accepts electrons to monitor chemical reactions, quantify ion activity, or determine the oxidizing or reducing properties of a solution.
pH:
- Range: 0 to 14 pH units
- Accuracy: +/- 0.2 units
- Resolution: 0.01 units
ORP:
- Range: -999 to 999 mV
- Accuracy: +/- 20 mV
- Resolution: 1 mV
Custom-made Pressure sensors with four range options.
- Range: 0 to 10m (Vented Level), 0 to 25m, 0 to 100m, 0 to 200m
- Accuracy: +/- 0.003 meters, +/- 0.05 meters, +/- 0.1 meters
- Resolution: 0.001 meters, 0.01 meters, 0.1 meters
The Self-Cleaning Turbidity sensor measures from 0 to 3000 NTU and includes a user-programmable cleaning system to remove any fouling or debris that could otherwise affect readings.
Range: 0-3000 NTU
- Accuracy (compared to Stable-Cal): 1% up to 100 NTU, 3% from 100-400 NTU, 5% from 400-3000 NTU
- Resolution: 0.1 NTU from 0-400 NTU; 1 NTU for >400 NTU
- Temperature Coefficient: 0.05%/C
The Chlorophyll A sensor by Turner Designs®.
Minimum Detection Limit: 0.03 µg/l
Dynamic Range:
- Low sensitivity: 0.03-500µg/L
- Med. sensitivity: 0.03-50µg/L
- High sensitivity: 0.03-5µg/L
- Accuracy: +/- 3% for signal level equivalents of 1 ppb rhodamine; WT dye or higher using a rhodamine sensor
- Resolution: 0.01 µg/L
The Blue-Green Algae sensor by Turner Designs® that uses fluorescence technology to provide real-time measurements of cyanobacteria.
Minimum Detection Limit: 100 cells/mL
Dynamic Range:
- Low sensitivity: 100-2,000,000 cells/mL
- Med. sensitivity: 100-200,000 cells/mL
- High sensitivity: 100-20,000 cells/mL
- Accuracy: +/- 3% for signal level equivalents of 1 ppb rhodamine; WT dye or higher using a rhodamine sensor
- Resolution: 20 cells/mL
The Rhodamine WT sensor by Turner Designs®.
Minimum Detection Limit: 0.04 ppb
Dynamic Range:
- Low sensitivity: 0.04-1000 ppb
- Med. sensitivity: 0.04-100 ppb
- High sensitivity: 0.04-10 ppb
- Accuracy: +/- 3% for signal level equivalents of 1 ppb rhodamine ; WT dye or higher using a rhodamine sensor
- Resolution: 0.01 ppb
The Total Dissolved Gas (TDG) sensor uses a pressure transducer mounted behind a rigid gas-permeable silicone membrane to measure the amount of total gaseous compounds dissolved in a liquid.
- Range: 400 – 1300 mmHg
- Accuracy: +/- 0.1% of span
- Resolution: 1.0 mmHg
The Ion Selective Electrodes (ISEs) are available for measuring Ammonia, Nitrate, or Chloride.
Ammonia
- Range: 0 to 100 mg/L-N
- Accuracy: Greater of +/- 5% of reading, Or +/- 2 mg/L-N
- Resolution: 0.01 mg/L-N
- Max Depth: 15 meters
Nitrate
- Range: 0 to 100 mg/L-N
- Accuracy: Greater of +/- 5% of reading, Or +/- 2 mg/L-N
- Resolution: 0.01 mg/L-N
- Max Depth: 15 meters
Chloride
- Range: 0.5 to 18,000 mg/L
- Accuracy: Greater of +/- 5% of reading, Or +/- 2 mg/L-N
- Resolution: 4 digits
- Max Depth: 15 meters
The Ambient Light sensor, also called a Photosynthetically Active Radiation (PAR) sensor, provides a measurement of sunlight intensity at a specified point in the water column.
- Range: 0 to 10,000 mol s-1 m-2
- Accuracy: +/- 5% of reading; Or +/- 1 mol s-1m-2
- Resolution: 1 mol s-1 m-2
Most common questions and answers:
Q: What are the differences between the OEM DS and the standard DS?
A: The OEM DS design has several improvements over the standard DS:
- HydroTech ultra-rugged 8 C cell housing machined from one solid piece, no gluing. Reduce the unit's buoyancy, reduce the risk of leaks and damage, and extend your depth deployment capabilities.
- If the batteries leak, the acid will interact with the metal springs and create a high pressure inside the battery housing which causes the battery acid to be injected into the main housing and results in a total loss of the unit in the case of the standard DS. However, that will not happened with the OEM DS because it has a 500 psi seal between the battery compartment and the main housing.
- All internal connectors in the OEM DS are highly reinforced to minimize vibration affects.
- The circuit boards inside the OEM DS are all reinforced with a proprietary process to maximize ruggedness of the unit and the ability to withstand more field abuse.
- The housing is fully assembled with no gluing and double o-ring seal for maximum ruggednes.
- HydroTech ultra-rugged 8 C cell housing machined from one solid piece, no gluing. Reduce the unit's buoyancy, reduce the risk of leaks and damage, and extend your depth deployment capabilities.
Q: What is the warranty on the OEM MS?
A: HydroTech provides two years warranty parts and labor.
Q: Can I use the Hydras 3 LT to communicate with the OEM DS?
A: Yes.
Q: Can I use the Hydras 3L Pocket software with the OEM DS?
A: Yes.
Q: Can I use my existing Hydrolab® cables to connect to the OEM DS?
A: Yes. The standard OEM DS comes with the standard Hydrolab® 6 pin bulkhead connector.
Q: I do not like the standard Hydrolab® 6 pin bulkhead connector, can the OEM DS be fitted with a YSI® type connector?
A: Yes. The "OEM DS" can be fitted with an optional YSI® type bulkhead connector with recessed pins for maximum ruggedness and it will work with your existing YSI® cables.
Q: Does the OEM DS have internal memory?
A: Yes, it has enough internal memory for 120,000 measurements.
Q: Does the OEM LDO support the LDO sensor?
A: Yes.
Q: Does the OEM DS require internal batteries when used with the SVR4A®?
A: No, the OEM DS does not require an internal battery pack when used with the SVR4® display. However, for extended use we highly recommend having the internal 8AA battery option, especially when the unit is equipped with optical sensors.
Q: Does the OEM DS require internal batteries when used with the Archer PDA?
A: Yes, the OEM DS does require an internal battery pack when used with the Archer PDA.
Q: Does the OEM DS require internal batteries when used with the computer ?
A: When used with a computer, the OEM DS will require external power or an internal battery pack.
Q: When connected to a Datalogger, can the OEM DS still log data internally ?
A: Yes, the OEM DS can perform all the following tasks simultaneously:
- Communicate with a PC or Handheld unit via RS232 or RS422
- Communicate to a datalogger via SDI-12 or RS232
- Log data to its internal memory up to 4 files at a time, even with overlapping dates
Q: What sensors configuration can I have on the OEM DS?
A: The OEM DS unit comes standard with temperature and conductivity sensors, and you can add any combination of the following sensors:
- pH
- ORP (Redox)
- Disolved Oxygen (Clark cell)
- Dissolved Oxygen ( Optical sensor LDO)
- Depth (25 or 100 m)
- Total dissolved gas “TDG” mmHg
- Self Cleaning turbidity
- (Optional circulator for low flow measurement)
- Chlorophyll
- Blue-Green Algae
- Rhodamine WT
- Ammonia
- Nitrate
- Chloride
- Ambient Light
For a quote please email your request to sales or call 512-846-2893