10
IM/AP300 Rev. J
| AP300 | Combination pH/Redox (ORP) sensors
2.1.3 AP304/5 Sensors
To install the AP304/5 Sensor:
1.
Fit choice of ball valve onto the process line or vessel.
2.
Fit compression fitting onto the ball valve – see Fig. 2.4.
Continued on page 11…
Warning.
— To avoid operator injury if the probe ejects to its end
stop, keep a safe distance when releasing the
compression fitting.
— Undo the compression fitting slowly as the probe can
slide out to its end stop under process pressure.
— It is hard to insert the probe above a process pressure
of 80 psi.
— Process pressure must not exceed 6 bar (87 lb in
–2
) @
25 °C (77 °F) continuous. Retract sensors during
process start-up to prevent damage due to pressure
surges or water hammer.
— Insert the sensor only as far as necessary to achieve
representative flow. Over-insertion may damage the
sensor and/or cause slow response.
— Fully retract the sensor before closing the valve and
fully open the valve before inserting the sensor.
Fig. 2.4 Installing the AP304/5 – Ball Valve and Compression Fitting
5%
T.C. Connector
(if applicable)
Male BNC
Cable
Rear of Sensor and Cable to be
Sealed in Conduit or Pipe
(Customer Supplied)
1
/
2
in. PVDF Retainer
Compression Fitting
Reducer
1
1
/
4
in. Full Port Ball Valve
or 1
1
/
2
in. Ball Valve
1
1
/
2
in. Nipple
Process Line / Vessel
For horizontal pipe, the preferred mounting position
is in the shaded area. Allowable mounting is
anywhere within the full circumference of the pipe.
Flat Glass
Bulb
AP305 – optimize self-cleaning by using
flat glass and notched body
Sample Flow
Sample flow
through pipe
Bulb
