ABB AP303/21010000/STD pH/Redox (ORP) Sensor Assembly

ABB AP303/21010000/STD pH/Redox (ORP) Sensor Assembly. Measurement made easy A reliable economic solution for a wide range of applications.

Features of ABB AP303/21010000/STD pH/Redox (ORP) Sensor Assembly

Long life

• large PTFE junction provides resistance to fouling

• double junction with gelled electrolyte provides better-defined junction potentials, creating an inherently-stable reference junction that is resistant to poisoning High accuracy

• specially formulated, low sodium-error glass for accuracy at high pH

• temperature sensor positioned perfectly to compensate for measurement and reference element temperature, ensuring rapid compensation and process temperature tracking High reliability

• operates up to 105 °C (221 °F) and 6 bar (90 psi) @ 25 °C (77 °F)

• fouling-resistant flat glass available High flexibility

• suitable for a wide range of applications

• available for insertion, immersion, flow-through and hot-tap

• standard- and blue-glass options

• bulb and flat-glass options Economical

• cost-effective

• long life

• highly reliable

ABB provides an unrivalled range of dedicated pH/Redox (ORP) sensors for a wide range of industrial duties.

Specification of ABB AP303/21010000/STD pH/Redox (ORP) Sensor Assembly

pH measuring range

• Standard (yellow glass) 0 to 14 pH

• Low temperature (blue glass) 0 to 10

pH Redox (ORP) measuring range

–2000 to 2000 mV

Temperature range

• Body 0 to 105 °C (32 to 221 °F)

• Bulb glass 0 to 105 °C (32 to 221 °F)

• Flat glass 5 to 100 °C (41 to 212 °F)

• Blue glass –5 to 60 °C (23 to 140 °F)

• Redox (ORP) 0 to 105 °C (32 to 221 °F)

Pressure maximum

6 bar (90 psi) @ 25 °C (77 °F)

Temperature compensator (pH sensors only)

Integral Pt100 or Balco 3 kΩ

Wetted materials

• pH electrode Glass

• Redox (ORP) electrode Platinum

• Junction PTFE

• Body AP301 PPS (Ryton)

• Body AP302/3 and AP304/5 PVDF (Kynar)

• Flow cell PVC

• Immersion guard PVC

• AP304 and AP305 shaft and Stainless steel compression fitting

pH glass types

• Bulb general duties

• Flat in-line, self-cleaning

• Blue low temperature

Reference system

Ag/AgCl-3.5M KCl in gel matrix

Reference junction

Porous PTFE

The AP300 range of pH/Redox sensors offers a reliable and cost-effective solution for most industrial pH applications. It is the perfect starting point for pH or Redox measurements. Combining measurement, reference and temperature compensation elements in a single unit, the AP300 is an economical solution for a wide variety of industrial applications; including water, food, pharmaceutical and chemical. The AP300 probe is available in three different body types enabling the sensor to be used in immersion, insertion/flowthrough and hot-tap applications. The‘Hot-tap’ sensor variant enables fitting and retraction through a standard, full-port ball-valve keeping maintenance costs to a minimum.

Ordering Information

Model: AP30 - pH/Redox (ORP) sensor assembly

Body style: 3/ - 3/4 in. threaded insertion/immersion (TB556 style)

Insertion depth 38 mm (1.5 in.) -notched sensor guard

Measuring electrode: 2 - standard yellow glass, pH (0 to 105°C [32 to 221°F], 0 to 14 pH)

Integral temperature sensor: 1 - Pt100 - pH sensors only

Liquid junction: 0 - PTFE

Junction box or integral cable length: 1 - 3 m (10 ft)

Sensor connectors: 0 - Tagged pin leads - all tagged terminations

Accessory hardware: 00 - No accessory supplied