Conductivity Sensor SC4AJ

Yokogawa has been supplying superior on-line analyzers for monitoring or controlling the conductivity of liquid or solutions.

Now, Yokogawa provides the FLXA402 four-wire conductivity/resistivity converter, the FLXA202 and FLXA21 two-wire conductivity/resistivity transmitters. Yokogawa also provides many kinds of sensors for accurately measuring liquid conductivity when using converters/transmitters.

The combination of Yokogawa's converters/transmitter and sensors meets the demanding ultrapurewater requirements of the growing semiconductor and pharmacentical markets in addition to traditional water quality measurements for standard power plant and chemical applications.

The SC4AJ conductivity sensor has a convenient, compact design and is widely used in various applications including boiler water and hydroponics conductivity measurement and pure water resistivity measurement in the semiconductor, food, pharmaceutical, and power industries.



Object of measurement Conductivity of liquids or solutions
Measuring principle Two-electrode system
Cell constant 0.02 cm-1, 0.1cm-1
Measuring range 0 - 0.5 to 0 - 200 μS/cm (Cell constant: 0.02 cm-1)
(with SC450G, SC202)
0 - 100 μS/cm to 0 - 1 mS/cm (Cell constant: 0.02 cm-1)
(with SC100)
0 - 5 μS/cm to 0 - 1 mS/cm (Cell constant: 0.1 cm-1)
(with SC450G, SC202)
0 - 500 μS/cm to 0 - 5 mS/cm (Cell constant: 0.1 cm-1)
(with SC100; Material: Titanium)
Temperature Range 0 to 110℃ (For electrode)
Sterilization for electrode 135℃ (275℉), within 30 minutes in Steam Sterilization
Pressure range 0 to 1 MPa (For electrode)
Sample solution condition Although flow rate is not limited in measurement, air bubbles should not be mixed in the sample solutions to obtain correct measured values.
Temperature sensor Pt1000
Weight Sensors:
  Adapter mounting type (SC4AJ-S-AD-09-002-05): approx. 450 g
  Adapter mounting type (SC4AJ-S-AD-15-002-05): approx. 520 g
  Welding socket type (SC4AJ-S-SA-NN-002-05): approx. 670 g
  5" welding clamp type (SC4AJ-S-SB-NN-002-05): approx. 550 g
  2" welding clamp type (SC4AJ-S-SC-NN-002-05): approx. 670 g
  3/4" stainles steel adapter (/PS): approx. 110 g
  3/4" PVDF adapter (/PF) : approx. 35 g
  Straight welding socket (/SA1) : approx. 300 g
  Angle welding socket 15 (/SA2) : approx. 320 g
  Welding clamp 1" (/SB1) : approx. 330 g
  Welding clamp 1.5" (/SB2) : approx. 305 g
  Welding clamp 2" (/SC1) : approx. 350 g
Process connection Adapter mounting, welding socket, welding clamp


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