Electrochemical Sensors :
EconoRUSH retractable Sensor Holder.
General Description
The EconoRUSH
retractable electro-chemical Sensor Holder is designed to allow the
replacement of 120mm x 12mm diameter electrodes without interrupting
the process flow.
It utilises the Ingold™ 25mm port system, a
unique gimbal mounting and o-rings with a low compression set. The
majority of the components are constructed of 316L stainless steel.
Sensor Characteristics
Any sensor (pH, DO, Conductivity, etc) with a
diameter of 12mm and a working length of 120mm (below the cap) can
be used.
The EconoRUSH Sensor Holder is currently designed
to receive sensor caps with 13.5 PG threads, although other types
can be accommodated. The only stipulation is that the 'measuring'
end of the sensor maintains a 12mm diameter beyond the o-ring seals.
Sensor Mounting
The sensors are mounted in the holder with a
unique (patent pending) gimbal system, designed to prevent stress
points at the sensor cap/body juncture.
Firstly, the o-ring and washer that come attached
to the sensor need to be removed as they are not required.
Secondly, the gimbal is threaded onto the sensor
until it fully seats. The sensor/gimbal assembly is then fitted into
the holder, past the o-ring seals at the front.
Finally, the gimbal nut is threaded onto the
holder. It can now be seen that the gimbal freely 'floats' within a
spherical chamber. Any misalignment between the sensor cap and body,
or bowing in the body does not result in applied stress to the
sensor, as is the case with fixed thread systems.
The gimbal assembly also allows for threads other
than 13.5 PG to be used. A simple, economical change of gimbal
design is all that is required.
Actuation
Actuation of the EconoRUSH Sensor Holder is an
easy one stroke movement. Grasp the actuating handle with one hand.
With the other hand, pull the latching band away from the latching
post, freeing the actuating mechanism.
Sensor Replacement
With the EconoRUSH Sensor Holder installed, the
sensor can be easily replaced without shutting down the process.
Manipulate the actuating arm to the retracted position. Remove the
gimbal nut. Carefully twist out the sensor/gimbal assembly from the
o-ring seals. Remove the gimbal from the old sensor. Mount the new
sensor and manipulate the actuator handle into the measuring mode.
Please contact our offices for further details of
this innovative new precision product.
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