Aquaread Limited

- Model AP-2000 / AP-2000-D - Advanced Mulitparameter Mini Water Quality Sonde Aquaprobe

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The AP-2000 is the smaller of our advanced portable multiparameter water monitoring probes. It comes with a range of standard sensors included, it also offers some customisation options that allow you to add even more sensors to the probe. All of our probes are constructed from tough marine grade aluminium that has been hard anodised, making it suitable for use in both fresh and salt waters.

  • Optical DO
  • Specific EC
  • Absolute EC
  • pH
  • ORP
  • TDS
  • Resistivity
  • Salinity
  • SSG
  • Temperature

The AP-2000 features 2 Auxiliary sockets to allow you to add further sensors to the probe.

The probe can be used with a variety of cable lengths via the AquaConn Connectors. Cables available in 3, 10, 20 and 30m lengths as standard.

  • There are 3 simple choices to make to customise the probe.
  • The probe comes with 1 Ion Selective Electrode (ISE) socket and 1 optical electrode socket, plus an option to add a depth sensor!
  • Probes are supplied with blanking plugs in the ISE and optical electrode ports as standard. Simply unscrew these to add your extra electrodes.

Your Options:

  • Do you want to measure Depth?
  • Which of the 5 ISE sensors do you require
  • Which of the 8 optical sensors do you require

  • The AP-2000-D features a depth sensor. This sensor is capable of measurement accuracy of 0.5%FS.
  • This is very comparable to a dedicated water level logger such as the LeveLine-ECO: 0.2%FS, and the LeveLine (titanium): 0.1%FS.
  • The depth is zeroed automatically whilst the conductivity is reading zero. As soon as the conductivity registers over 0 the probe depth begins to be calculated.
  • Once the probe is lowered to the desired depth it must be secured, then using the GPS Aquameter the depth can be zeroed once again.
  • Now the AP-2000-D will detect small changes in the water level and display them as a positive or negative change.

The bright red and blue LED’s of the optical DO sensor

Advanced Optical DO sensor

  • The optical sensor works on the principle of Dynamic Luminescence Quenching. A gas-permeable material known as a luminophore is excited with short bursts of blue light, which causes molecules in the luminophore to emit red photons.
  • By measuring the delay of the returned red photons with respect to the blue excitation, the level of dissolved oxygen present can be determined.
  • The optical method has various advantages over the historical galvanic method for measuring dissolved oxygen.
  • The most important being that as no oxygen is consumed across a membrane, the sensor does not require a flow of liquid passing over it to achieve a stable reading. Other advantages include in frequent calibrations (every 3-6 months), and replaceable caps that last over 2 years.

Rugged AquaConn connector system

Rugged Connection

All Aquaprobes feature the new AquaConn fully metal connectors. The AP-2000 features the all-metal AquaConn connectors.

These high specification connectors feature large metallic key for a rigid fit, recessed pins for extra protection during pairing, guide markers on each part of the connector to allow you to instantly push the pair together in the correct alignment.

The AP-2000 with it’s auxiliary socket blanking plugs removed

Two Auxiliary Sockets

The AP-2000 has two auxiliary sockets. One small ISE socket and one larger optical electrode socket. These sockets allow you to add extra sensors to the AP-2000 depending on your requirements, we have a wide range of sensors available such as ammonium, nitrate turbidity and chlorophyll to name a few.

Dissolved Oxygen

  • Range: 0 – 500.0% / 0 – 50.00 mg/L
  • Resolution: 0.1% / 0.01mg/L
  • Accuracy: 0 – 200%: ± 1% of reading. 200% – 500%: ± 10%

Conductivity (EC)

  • Range: 0 – 200 mS/cm (0 – 200,000 µS/cm)
  • Resolution: 3 Auto-range scales: 0 – 9999 µS/cm, 10.00 – 99.99 mS/cm, 100.0 – 200.0mS/cm
  • Accuracy: ± 1% of reading

TDS*

  • Range: 0 – 100,000 mg/L (ppm)
  • Resolution: 2 Auto-range scales: 0 – 9999mg/L, 10.00 – 100.00g/L
  • Accuracy: ± 1% of reading

Resistivity*

  • Range: 5 Ωcm – 1 MΩcm
  • Resolution: 2 Auto-range scales: 5 – 9999 Ωcm, 10.0 – 1000.0 KΩcm
  • Accuracy: ± 1% of reading

Salinity*

  • Range: 0 – 70 PSU / 0 – 70.00 ppt (g/Kg)
  • Resolution: 0.01 PSU / 0.01 ppt
  • Accuracy: ± 1% of reading

Seawater Specific Gravity*

  • Range: 0 – 50 st
  • Resolution: 0.1 st
  • Accuracy: ± 1.0 st

pH

  • Range: 0 – 14 pH / ± 625mV
  • Resolution: 0.01 pH / ± 0.1mV
  • Accuracy: ± 0.1 pH / ± 5mV

ORP

  • Range: ± 2000mV
  • Resolution: 0.1mV
  • Accuracy: ± 5mV

Temperature

  • Range: -5°C – +50°C (23°F – 122°F)
  • Resolution: 0.01° C/F
  • Accuracy: ± 0.5° C

Optional Parameters

Depth **

  • Range: 0-60m (AP-2000 & AP-5000), 0 – 100m (AP-7000)
  • Resolution: 0.01m
  • Accuracy: ±0.5% FS (AP-2000 & AP-5000), ±0.2%FS (AP-7000)

**Option on the AP-2000. Comes as standard on the AP-5000 & AP-7000

Ion Specific Electrodes***

Ammonium

  • Range: 0 – 9,000mg/L (ppm)
  • Resolution: 2 Auto-range scales: 0.00 – 99.99 mg/L, 100.0 – 9,000 mg/L
  • Accuracy: ± 10% of reading

Ammonia†

  • Range: 0 – 9,000mg/L (ppm)
  • Resolution: 2 Auto-range scales: 0.00 – 99.99 mg/L, 100.0 – 9,000 mg/L
  • Accuracy: ± 10% of reading

Chloride

  • Range: 0 – 20,000mg/L (ppm)
  • Resolution: 2 Auto-range scales: 0.00 – 99.99 mg/L, 100.0 – 20,000 mg/L
  • Accuracy: ± 10% of reading

Flouride

  • Range: 0 – 1,000mg/L (ppm)
  • Resolution: 2 Auto-range scales: 0.00 – 99.99 mg/L, 100.0 – 999.9 mg/L
  • Accuracy: ± 10% of reading

Nitrate

  • Range: 0 – 30,000mg/L (ppm)
  • Resolution: 2 Auto-range scales: 0.00 – 99.99 mg/L, 100.0 – 30,000 mg/L
  • Accuracy: ± 10% of reading

Calcium

  • Range: 0 – 2,000mg/L (ppm)
  • Resolution: 2 Auto-range scales: 0.00 – 99.99 mg/L, 100.0 – 2,000 mg/L
  • Accuracy: ± 10% of reading

† Ammonium electrode required. Readings calculated from Ammonium, pH and temperature electrode values.

Optical Electrodes***

Turbidity

  • Range: 0 – 3000 NTU
  • Resolution: 2 Auto-range scales: 0.0 99.9 NTU, 100 – 3000 NTU
  • Repeatability: ± 2% of reading

Chlorophyll

  • Range: 0 – 500 µg/L (ppb)
  • Resolution: 0.01 µg/L
  • Repeatability: ± 2% of reading

Phycocyanin (Freshwater Blue-Green Algae)

  • Range: 0 – 300,000 cells/mL
  • Resolution: 1 cell/mL
  • Repeatability: ± 2% of reading

Phycoerythrin (Marine Blue-Green Algae)

  • Range: 0 – 200,000 cells/mL
  • Resolution: 1 cell/mL
  • Repeatability: ± 2% of reading

Rhodamine WT Dye

  • Range: 0 – 500 µg/L (ppb)
  • Resolution: 0.01 µg/L
  • Repeatability: ± 5% of reading

Fluorescein Dye

  • Range: 0 – 500 µg/L (ppb)
  • Resolution: 0.01 µg/L
  • Repeatability: ± 5% of reading

Refined Oil

  • Range: 0 – 10,000 µg/L (ppb)
  • Resolution: 0.1 µg/L
  • Repeatability: ± 2% of reading

CDOM/FDOM

  • Range: 0 – 2,000mg/L (ppm)
  • Resolution: 2 Auto-range scales:
  • 0.00 – 99.99 mg/L, 100.0 – 2,000mg/L
  • Repeatability: ± 10% of reading or 2ppm (whichever is greater)

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