Salt Bridge; Protection Hose Installation Kit - YOKOGAWA FD20 Instruction Manual

4.4 Salt bridge

This reference electrode/salt bridge
combination allows the measurement of
pH and ORP (Redox) potentials with normal
electrodes in those cases when:
A. excessive contamination of the flow
diaphragm is expected. The flow of the
reference liquid through the diaphragm is
increased by pressurising the container.
Consequently, the contamination rate will
decrease.
B. the process to be measured cannot
stand contamination with KCI. The
salt bridge can be filled with several
electrolytes, e.g. KNO3.
C. measurement has to be performed at
pressures up to 10 bar and temperatures
up to 100 °C. As the container with
reference liquid can be pressurised.
FLOW TUBE (A)
Material
Flow diaphragm : ceramic, PTFE or sleeve
Connector
TUBING (B)
Material
Diameter
Length
CONTAINER (C)
Container
Mounting set
O-ring
Connection
Weight
Mounting
Temperature/
pressure ratio
Parts and accessories
Order nr. Description
SB20-VC Salt bridge with ceramic junction
SB20-VP Salt bridge with porous PTFE
SB20-VS Salt bridge with glass sleeve
K1500DX 5m tubing for SB20
K1500BW flow tube for SB20-VC
K1500EE flow tube for SB20-VP
K1500EF flow tube for SB20-VS
IM12B06K02-01E-E_ed09.indd 21
: glass
: PPS (Ryton™)
: nylon
: 1/4" o.d.
: 2 mtr.
: PVC, PVC (transparent)
: PPS (Ryton™)
: silicone
: nylon
: approx. 300 g.
: wall mounting (support
with hole for screw M5)
: max. 200 kPa
(2 bar) at 100°C
junction
junction
REFERENCE
ELECTRODE
Fig. 4.6 Mounting the salt bridge
Note: The reference electrode must be
ordered seperately.

4.5 Protection hose installation kit

The protection hose installation kit is for
protection of electrode cable and/or tubing
between fitting and converter, connecting
box, supply unit, etc. The hoses can be
mounted directly to the hose connection(s)
on top of each fitting. Clamps for fixing are
part of the installation kit.
Parts and accessories
Order nr. Description
K1500CJ Protection hose kit 5 m
K1500CK Protection hose kit 10 m
IM12B06K02-01E-E
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07/03/16 09:51