GF Signet 2839-2842 NPT Conductivity-Resistivity Electrodes - Manual (Page 4)

Georg Fischer Signet LLC, 3401 Aerojet Avenue, El Monte, CA 91731-2882 U.S.A. • Tel. (626) 571-2770 • Fax (626) 573-2057
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3-2840.090 Rev. H 04/12 English © Georg Fischer Signet LLC 2012
5. Maintenance
9 mm
0.34 in.
41 mm/1.6 in.
25.4 mm/1.0 in.
14 mm
0.55 in.
A
Electrode tip
(side view)
Electrode
B
Insulator
C
Internal contact
Cotton swab
¥ Clean internal and external surfaces
Electrode tip
(end view)
D
New Insulator
electrode tip
(side view)
3-2842.390 Insulator replacement kit
8-32 thread for removal
11 mm
0.44 in. Conductivity electrodes require little maintenance except for periodic cleaning in installations where contaminants are present.
• Keep metal surfaces clean and free of coatings.
5.1 Replacement Insulator, 2842 electrode only
• 2842 electrodes have a removable insulator so the internal
cavity can be cleaned.
• After the insulator snaps into position it cannot be removed
without damage.
• Order insulator replacement kit 3-2842.390 before attempting
maintenance.
6. Ordering Information
Mfr. Part No. Code Description
3-2839-1 159 000 921 Cell 0.01, 4.6 m (15 ft) cable, NPT
3-2839-1D 159 000 923 Cell 0.01, 4.6 m (15 ft) cable, ISO
3-2840-1 159 000 786 Cell 0.1, 4.6 m (15 ft) cable, NPT
3-2840-1D 159 000 788 Cell 0.1, 4.6 m (15 ft) cable, ISO
3-2841-1 159 000 790 Cell 1.0, 4.6 m (15 ft) cable, NPT
3-2841-1D 159 000 792 Cell 1.0, 4.6 m (15 ft) cable, ISO
3-2842-1 159 000 794 Cell 10.0, 4.6 m (15 ft) cable, NPT
3-2842-1D 159 000 796 Cell 10.0, 4.6 m (15 ft) cable, ISO
3-2850-51 159 001 398 Sensor Electronics, 3 /
4
in. NPT j-box, one input/one Digital (S 3 L) output
3-2850-52 159 001 399 Sensor Electronics, 3 /
4
in. NPT j-box, one input/one 4 to 20 mA output
3-2850-61 159 001 400 Sensor Electronics, Universal Mount j-box, one input/one Digital (S 3 L) output
3-2850-62 159 001 401 Sensor Electronics, Universal Mount j-box, one input/one 4 to 20 mA output
3-2850-63 159 001 402 Sensor Electronics, Universal Mount j-box, two inputs/two Digital (S 3 L) outputs
Parts and Accessories
3-2830 159 000 628 Conductivity certification tool; simulates 1µS/cm and 2.5 µS/cm
3-2842.390 159 000 925 2842 replacement insulator, PEEK with FPM O-ring
3-8050-1 159 000 753 Universal mount junction box
3-8052 159 000 188 3 /
4
in. Integral mounting kit
3-9000.392-1 159 000 839 Liquid-tight connector kit, one set, 1 /
2
in. NPT
3-9000.392-2 159 000 841 Liquid-tight connector kit, one set, PG 13.5
3-9900.396 159 001 701 Angle Adjustment Adapter
5523-0322 159 000 761 Sensor cable (per ft), 3 conductor plus shield
9 mm
0.34 in.
41 mm/1.6 in.
25.4 mm/1.0 in.
14 mm
0.55 in.
A
Electrode tip
(side view)
Electrode
B
Insulator
C
Internal contact
Cotton swab
¥ Clean internal and external surfaces
Electrode tip
(end view)
D
New Insulator
electrode tip
(side view)
3-2842.390 Insulator replacement kit
8-32 thread for removal
11 mm
0.44 in.
Insulator removal and replacement
A. Thread the screw into the insulator (8-32 thread).
B. Pull to remove the old insulator.
C. Clean any coating or deposits inside the electrode.
D. Insert the new insulator and press into place.