Pr
o
Minent
®
23
Assembling the
diaphragm cap
왘
Locate the electrode shaft vertically onto the filled diaphragm cap and turn
until the thread bites.
왘
Rotate the diaphragm cap so that the vent hole is at the top.
왘
Slowly
screw on the diaphragm cap by hand up to the stop. In the
process the excess electrolyte will seep out of the vent hole.
왘
Rinse sensor under running water to remove excess electrolyte from the
sensor and from hands.
Inserting the
sensor
IMPORTANT
•
The sensor must be slowly inserted into or withdrawn from the in-line
probe housing! The diaphragm could otherwise be damaged.
•
Do not touch the in-line probe housing flow resistor with the
diaphragm!
•
The sensor must be kept wet at all times once commissioned - e.g.
the in-line probe housing must not be allowed to run dry.
Assemble the sensor as described in the operating instructions supplied with
the in-line probe housing.
6
Installation
IMPORTANT
•
The sensor is not electrically isolated from the sample water. All other
elements must be isolated! The controller must be isolated both from
the sensor and from the supply voltage!
•
The supply voltage must not fall below 16 V DC, even for a short
period! The current source must able to sustain 35 mA at a min. 16 V
DC! Insufficient supply voltage will result in an inaccurate reading!
•
After the electrical connection of the sensor, the sensor has to be
inserted into the sample water which has to contain chlorine dioxide.
The sensor incorporates a passive 4-20 mA two-wire interface, i.e. the power
supply is provided externally e.g. via the controller.
•
Safety requirements are automatically met if the sensor is connected to a
ProMinent
®
controller (e.g. DULCOMETER
®
D1C).
•
The following should be noted if connecting to other devices:
Voltage source:
16-24 V DC. Min. 35 mA at 16 V DC
Max. load:
1 W
•
Do not switch off the measuring system when in intermittent use!
If necessary, dosing equipment should be timer-controlled!
Assembly / Installation
BA_DT_095_08_08_4spr.p65
05.08.2008, 12:42 Uhr
23