GF Signet 2714-2717 pH_ORP Electrodes - Manual (Page 4)

Technical Features
a) Male BNC connector
b) Keyed for a simple sure fi t
c) Viton® O-rings
d) Silicone-bushing seal
e) Double junction
f) Ag/AgCl reference element
g) Platinum sensing surface (ORP) or fl at pH glass
h) Porous UHMW polyethylene reference junction
a b
c
d
e
f
g
o
l
k
j
i
h
n
m
c
Georg Fischer Signet LLC, 3401 Aerojet Avenue, El Monte, CA 91731-2882 U.S.A. • Tel. (626) 571-2770 • Fax (626) 573-2057
For Worldwide Sales and Service, visit our website: www.gfsignet.com • Or call (in the U.S.): (800) 854-4090
3-2714.090-1 J 3/08 English © Georg Fischer Signet LLC. 2008 Printed in U.S.A. on recycled paper
6. Replacement parts and accessories
Mfr. Part No. Code Description
3-2714 198 844 300 Flat pH Electrode
3-2714-HF 198 844 305 Flat pH Electrode, HF Resistsant
3-2715 198 844 301 Flat ORP Electrode
3-2716 198 844 302 Bulb pH Electrode
3-2716-DI 198 844 306 Bulb pH Electrode, DI Resistant
3-2717 198 844 303 Bulb ORP Electrode
3-2759 159 000 762 pH/ORP Simulator/System Tester
3-2759.393 159 000 765 Adapter Cable for use with 2720
3-2720 198 864 602 Preamplifi er, ¾ in. NPT
3-2720-2 198 864 603 Preamplifi er, ISO 7-R ¾
P31515-0P200 159 000 630 PVC Pipe Adapter
P31515-0C200 159 000 631 CPVC Pipe Adapter
P31515-0V200 159 000 459 PVDF Pipe Adapter
3-0700.390 198 864 403 pH Buffer Kit
1220-0021 198 801 186 O-ring, FPM (standard)
1224-0021 198 820 006 O-ring, EPDM
1228-0021 198 820 007 O-ring, Kalrez
i) 3K Balco thermistor
j) Solidifi ed acrylamide reference
electrolyte
k) Ag/AgCl measuring element
l) Large reference volume
m)
Epoxy seal
n) Shielding
o) 10K
Ω I.D. resistor for ORP sensor
CAUTION!
Apply O-ring lubricant to sensor O-rings prior to assembly.
Unlubricated O-rings may score the sealing surface in the 2720.
WARNING!
Wear appropriate eye, face, hand, body, and respiratory protection when using chemicals or solvents.
pH
ORP
Signet
MODEL 2759
pH/ORP SIMULATOR
3-2759 pH/ORP
Simulator/System Tester
5.2 Cleaning
Cleaning techniques vary depending on the type of coating present on the glass electrode surface or reference junction.
• Soft coatings can be removed by vigorous stirring, or with directed spray of an applicable detergent or solvent onto the glass
electrode surface. Chlorine bleach or mild detergent may be used to remove soft coatings. Always rinse electrode tip in clean water
after cleaning.
• Hard coatings can be chemically removed. Use the least harsh chemical which will remove the contaminant within two (2) minutes
without attacking the materials of construction. e.g. calcium carbonate may be removed with a 5% HCl (muriatic acid) solution.
• Oily or organic coatings can be removed with detergents or an appropriate solvent that does not attack the materials of
construction e.g. isopropyl alcohol may be used but acetone must be avoided to prevent damage to the CPVC sensor body.
• ORP electrode surface (platinum rod) can be gently sanded with 600 grit wet and dry silicone or carbide sandpaper, jewelers rouge,
crocus cloth, or very fi ne steel wool.