Reagent-less Free Chlorine
The main applications for this instrument are for the measurement
of free available chlorine concentration in feed water at filtration plants,
pumping stations and end-of-pipe distribution points.
- Long term, stable
measurement using a sensor which contains a contact-free swing rotary
residual chlorine electrode (includes beads cleaning system).
- Transmitter with
built-in microcomputer includes a full range of diagnostic functions
including low flow rate detection, calibration error, etc
- Non-reagent system
eliminates the need for regular reagent supply.
- Stable and reliable
operation can be further enhanced by adding optional auto-calibration
and auto-cleaning functions.
chlorine (free chlorine) of water
by eccentric rotary micro-electrode.
rotary (with built-in Au-Ag temperature compensation resistor) sensing
electrode, type 2128.
||Select one of
0~1/2, 0~2/3, 0~1/3 mg/l (ppm units are also available if specified).
|Manual or remote
switching (client to specify).
||4~20mA DC, maximum
load 600W, isolated output.
Contact Switching Outputs:
Range indication, under maintenance, power fail, temperature fault, in
calibration mode *1, calibration error *1, analyser fault (contact rating:
30V DC, 0.1A). (*1: available with auto-cal option only).
low concentration (contact rating: 125V AC, 1A).
Contact Switching Inputs:
Range switching (open contacts=low range, closed contacts=high
range) (contact rating: 30V DC 0.1A).
(contact closed for 100mS or longer) (contact rating: 30V DC, 0.1A), only
available with auto-cal option.
This instrument is suitable for measurement of clear, purified
water in water distribution systems or from hydrants etc.. There are pH
and conductivity restrictions for the sample as explained later in these
specifications. In addition, if combined chlorine exists, it will cause
a measurement error of 1/5~1/4 of the concentration. However, this characteristic
does not normally cause any problems, since purified water contains only
negligible concentrations of combined chlorine. For applications outside
these constraints or where increased accuracy is required, then a reagent-type
residual analyser should be used.
||80mS/cm or greater.
(flow rate of sample to be introduced into analyser: 0.1 l/min, approx.).
|| Hard PVC, Teflon
tubing, polyethylene tubing.
with beads cleaning system.
|| 100V AC ±10%,
50/60Hz.(115V, 220V Option, Specify)
||Approx. 50 VA
(main body of instrument; approx. 20VA, with calibration; approx.
|ADC12 (Al. die
Pantone 537C (Equivalent to Munsell 5PB8/1).
to Munsell N6).
Mounting Floor standing.
||Five glands for
6mm~12mm diameter cable entries.
(with chlorine standard solution).
(with chlorine standard solution)
||Within 2 minutes
for 90% response
(measured from sample inlet at flow rate of 1 l/min).
|Zero: water filtered
by active charcoal filter is introduced.
Calibration Start Mode:
by keypad command.
by internal timer.
by external contact input signal (when calibration period is set at
||0~999 hr. variable
(Initial value 15 mins).
||Approx. 10 mins.
||0~30 min. variable
(Initial value15 mins).
|Output Hold Time
+ stand-by time.
Unit for Increasing Conductivity (Model CLZ-2):
This unit increases the conductivity of the water sample
by adding salt tablets. This is required for low conductivity samples.
This unit is used for manual zero operation and consists
of an activated charcoal filter, a calibration liquid tank and a built-in
manual switching valve.
Principle of Operation:
This instrument consists of a sensor and transmitter mounted
on a self-standing frame. The sample flows to the measurement cell of
the sensor. In the measurement cell, a fixed voltage is applied between
a sensing electrode and a counter electrode to achieve electrolytic reduction.
The reduction current (diffusion current) that flows across the two electrodes
is proportional to the free chlorine concentration present between the
electrodes. This current is amplified and the represents the free chlorine
pH & Conductivity Characteristics of Sample
External Dimensions (mm), General Tolerance ±10
||Flow path switching
||Sample flow adjustment
|| Pressure reduction
||RC ½ (with
||5 X Cable entries
||Gland for 6mm~12mm
General Inquiry Information
Many of the DKK-TOA
Industrial process control instruments are available from Analyticon with
many options and configurations to suit an entire range of applications.
As a leader in analytical sensor technology, many years of expertise and
innovation have been incorporated into the finest process control equipment
in the world.
Every process monitoring
environment will have unique requirements including sensor configuration
of the electrode, including submersable flow thru type cells, system pressure
and voltage requirements, indoor/outdoor applications, data logging requirements,
and electrode maintenance issues.
It is very important
to know all of the parameters for the particular meausurement you will
be making. If you need additional information, please have all this information
available when contacting Analyticon in order to be able to process your