Multi-purpose meter AD8000

Multi-purpose meter AD8000

ADWA AD8000: a professional benchtop meter for pH, conductivity (EC), TDS, ORP and temperature

The multi-purpose meter AD8000 is a microprocessor benchtop meter that covers several parameters with one device: pH, conductivity (EC), TDS, ORP (mV) and temperature. It also shows relative mV. It has a main and a secondary display, automatic temperature compensation, a calibration expiry warning and a GLP function for reviewing the last calibration.

The set includes an A1131B refillable glass pH electrode (BNC, 1 m cable), an A7662 stainless steel temperature probe (1 m cable), an A76309 EC/TDS probe with a built-in temperature sensor (1 m cable), pH 4.01 and 7.01 calibration solutions (20 mL each), EC standards of 1413 µS/cm and 12.88 mS/cm (20 mL each), a 12 V adapter, an electrode holder and instructions. The ORP electrode is not included in the set; it is available separately as the A3230B ORP electrode.

According to the official ADWA manufacturer's instructions it measures pH in the range from −2.00 to 16.00 (in high resolution −2.000 to 16.000 pH, accuracy ±0.002 pH), conductivity from 0.00 µS/cm to 199.9 mS/cm with automatic range selection, and temperature up to 120 °C.

Multi-purpose meter AD8000

How to calibrate the multi-purpose meter AD8000

pH calibration is possible with one, two or three points. The meter has five stored buffers (4.01, 6.86, 7.01, 9.18 and 10.01), and at least two-point or three-point calibration is recommended. Select the pH range, dip the electrode and temperature probe about 4 cm into the buffer, stir gently and press CAL. When the reading settles and CFM starts flashing, confirm it. Repeat the procedure with the next buffer, and after the last point press CAL.

For EC you calibrate the zero (dry probe in air) and the slope with one standard (84 µS/cm, 1413 µS/cm, 5.00, 12.88, 80.0 or 111.8 mS/cm), and set the cell constant too if needed. EC temperature compensation can be automatic, manual or off.

Advantages: multi-purpose meter AD8000

• One meter for pH, EC, TDS, ORP (mV) and temperature
• pH in high resolution up to 0.001, accuracy up to ±0.002 pH
• Automatic range selection for EC and TDS
• Automatic (ATC), manual (MTC) or switched-off temperature compensation
• Up to 3-point pH calibration with 5 stored buffers
• Calibration expiry warning (1 to 7 days) and a GLP function
• HOLD function: freezes the first stable reading
• Non-volatile memory keeps the calibration and settings without power
• The set includes three electrodes, standards and an electrode holder
• Price: €396.50

Use: multi-purpose meter AD8000

Who is it for

Choose it for a laboratory or workshop where you often measure several parameters and want one device with an electrode holder. For pH and ORP only, see the AD111 or the waterproof AD131/AD132. For laboratory measurement of pH, ORP and ions (ISE) there is the AD1200 benchtop meter.

Maintenance: multi-purpose meter AD8000

Storing and cleaning the electrodes

Keep the pH electrode moist in the storage solution, never in distilled water. If the membrane is dry, soak it in the storage solution for at least one hour. For a refillable electrode, top up the electrolyte when the level is more than 2.5 cm below the filling hole. Check the cable, connectors and electrode regularly. Rinse the EC probe with clean water after measuring, and for a more thorough clean remove the protective tube, wipe the probe with a soft cloth and recalibrate the meter. A replacement EC/TDS electrode and the 1.413 mS/cm EC calibration liquid are available separately.

Technical specifications: multi-purpose meter AD8000

• pH range: −2.00 to 16.00 (high resolution −2.000 to 16.000), resolution 0.01/0.001, accuracy ±0.01/±0.002 pH
• mV range: ±699.9 mV (resolution 0.1 mV) and ±2000 mV (1 mV)
• EC: 0.00 µS/cm to 199.9 mS/cm, automatic ranges, accuracy ±1% of full scale
• TDS: 0.00 ppm to 99.9 ppt, TDS factor 0.40 to 1.00
• Cell constant: 0.500 to 1.700
• Temperature: −9.9 to 120.0 °C (pH probe), 0.0 to 100.0 °C (EC), accuracy ±0.5 °C
• pH calibration: up to 3 points, buffers 4.01/6.86/7.01/9.18/10.01
• Power supply: 12 V adapter
• Dimensions: 230 × 180 × 50 mm, weight 1.8 kg

If you are looking for a multi-purpose meter AD8000 for measuring pH, conductivity, TDS, ORP and temperature with one device, this is a professional ADWA benchtop meter with three electrodes in the set. Also see all ADWA meters.