HydroTech - Model OEM DS5 & DS5X -Multiprobes

• 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