Hach-Lange ORBISPHERE A1100 Family - Manual (Page 28)

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Installation
4.3.4 The 33095 sensor housing
The ORBISPHERE 33095 sensor housing is also available for use with the A1100 sensor but
requires that the sample flow be turned off prior to insertion or removal of the sensor.
Sensor insertion is made by inserting the sensor into the housing and tightening the retaining
collar until it stops. Removal is made by unscrewing the collar and pulling the sensor out. Be
sure that the sample flow has been turned off before inserting or removing the sensor.
4.3.5 Tuchenhagen Varivent® in-line access unit
The following illustration shows the Tuchenhagen Varivent® In-Line Access Unit.
Purchasing a Tuchenhagen Varivent® in-line access unit, or an equivalent fitting with a 68 mm
flange diameter from the fitting manufacturer, is required to make use of the ORBISPHERE
model 32003 sensor housing device detailed above.
4.3.6 ORBISPHERE flow chambers
The ORBISPHERE 32001.xxx flow chambers are used to draw liquid and gaseous samples
past the sensor. They are available in several materials, depending on the application.
They connect to 6-mm or ¼" stainless steel tubing by means of two Swagelok™ fittings. If
necessary, copper or plastic tubing with low permeability can be substituted. Stainless steel
tubing is normally enough to hold the assembly in place, but for a more stable installation, a
large U-bolt can be used to mount the flow chamber to a support.
Figure 11 Tuchenhagen Varivent® in-line access unit
Dimensions of sensor and flow chamber assembly :
• Width: 50 mm
• Height: 210 mm
(add 100 mm for connection length)