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GF Signet 4150 Stilling Chamber User Manual

Signet 4150 stilling chamber, With automatic air release valve, Fig 1

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Signet 4150 Stilling Chamber

with automatic air release valve

3-4150.096 Rev C 09/13 English

*3-4150.096*

Description

The Signet 4150 Stilling Chamber is used to remove air bubbles
from the fl ow stream before it passes through the measuring
cell of the Turbidimeter. Air bubbles will cause unstable or
incorrect readings if not eliminated from the fl ow stream.

The stilling chamber is a cylinder approximately 5 cm x 66 cm
(2 in. x 26 in.). Water enters the chamber via the outlet fi tting
near the top of the cylinder (see fi gure 1). As it passes through
the chamber, the fl ow velocity is reduced by the larger volume
of the chamber. This allows time for any entrained air to rise to
the top of the cylinder, where the automatic air vent releases it
into the environment.

For proper operation the stilling chamber must be mounted
lower than the sensor. For optimum results there should be at
least 76 cm (30 in.) as measured from midpoint of the air vent
to the inlet at the sensor.

The air vent has a maximum working pressure of 6 bar (90 psi)
and maximum temperature range to 106 °C (225 °F).

Pressure
Regulator

MINIMUM 76 cm (30 in.)

Inlet with

aerated water

Outlet with
clear water

3-4150 Turbidimeter

66 cm
(26 in.)

24 cm
(9½ in.)

5/16 in. O.D. x 3/16 in. I.D. Tubing

DESSICANT COMPARTMENT

OPEN ONLY FOR MAINTENANCE

Operating Instructions
Braukman Automatic Air Release Valve

1. Before fi lling the chamber, make sure the red vent cap is securely tight

and that the release valve is in the closed position (see fi gure 2) by
turning valve body clockwise. HAND-TIGHTEN ONLY to avoid damaging
the valve.

2. With the valve in the closed position, fl ush the system as required to

remove dirt, debris and contaminates.

3. Fill the system with the appropriate solution.

4. Start operation by turning the air release valve body counter-clockwise to

the open position (see fi gure 2).

5. For proper operation, make sure that the red vent cap is tightened all the

way to the stop position.

HAND-TIGHTEN

ONLY.

Figure 2 Shown in

Open Position

OPENED

CLOSED

Fig 1