YOKOGAWA SC210G Conductivity Detector

Wiring: The cable length is provided according to the order (3/5/10/15/20m), and the terminals are divided into M4 ring type (compatible with FLXA202/FLXA21), M3 ring type (compatible with FLXA402/FLXA402T/SC450G), and pin type (compatible with multiple devices); The cable should avoid contact with high-temperature components, and the joint locking nut should be tightened for waterproofing after connection. The insulation resistance between the core wires should be ≥ 2 M Ω

Operation and maintenance process

1. Preparation before operation and steady-state operation

Inspection items: correctness of wiring, compatibility of piping materials, solution level (flow type needs to go to the outlet), no leakage; After startup, it is necessary to confirm that there is no bubble interference and no sudden temperature changes (to avoid affecting measurement accuracy)

Steady state maintenance: Conventional solutions (free of pollutants) can be maintained for 1 year without maintenance; Regular calibration with standard solution is required to ensure accuracy; If the analyzer outputs a FAIL signal, refer to the analyzer manual for troubleshooting

2. Core maintenance operations

(1) Electrode cleaning

Cleaning cycle: Low range (0.05 cm ⁻¹) electrodes require almost no cleaning due to minimal impurities in the solution; Medium range (5 cm ⁻¹) electrodes should be cleaned as needed (if the analyzer indicates abnormal electrode polarization)

Cleaning method: Type C (clean the inner and outer electrodes, only the inside of the hole needs to be cleaned externally); D-type (glass material requires a protective tube, gently wipe the platinum electrode on the inner wall of the glass tube with a thin rod wrapped in degreasing cotton)

(2) O-ring replacement

Replacement timing: O-ring damage can cause leakage, and regular inspections are required in high-temperature solution scenarios; Conventional O-ring (fluororubber, model K9050AT/K9050MR), with gate valve model requiring replacement with dedicated O-ring (K9050MS)

Replacement steps: For non gate valve types, simply loosen the union nut and remove the electrode to replace it; The gate valve type needs to first remove the external electrode and locking nut, remove the stop screw and replace the O-ring (recommended to replace in pairs), and calibrate the battery constant after reinstallation

(3) Electrode component replacement

Replacement condition: When the electrode is judged to be faulty (if there is still a large deviation after calibration)

Step: Power off → Remove the connection between the junction box and the electrode (use an Allen wrench to unscrew the electrode assembly) → Install a new component and wire it according to the color (green → C1, yellow → C2, red/black → T1/T2) → Update the battery constant label in the junction box → Enter the new battery constant in the analyzer