Suitable for a wide range of standard
industrial pH applications including
water, food, textiles and chemicals,
ABB’s AP300 pH/Redox sensors
combine measurement, reference
and temperature compensation
elements in a single unit.

The sensor versions available are
insertion probe, dip-type immersion
and in-line flow-through, enabling
users to cover diverse applications.

Sensors operate at up to 105°C
and 6bar.Within the robust outer
casing, the electrolyte is a mediaresistant
gel, which is faced with
PTFE liquid junction. The PTFE
junction is suitable for most
applications and is especially
resistant to fouling when used in
conjunction with a flat glass element.

The AP300 has a double junction
construction which helps extend the
life of the sensor by protecting the
reference electrode from poisoning.

Its integral temperature
compensator offers accuracy and
speed of response. The temperature
sensor is located at the tip of the
AP300 together with the measuring
and reference electrodes.