Reagentless City Water Analyzer
This
second generation analyzer is for continuous monitoring water quality
at faucet feed line or at water receiving tank from city water supply
pipe (maximum 7 parameters). Measurement items are turbidity, color and
residual chlorine as standard and conductivity, pH, water temperature
and water pressure. It is designed to enable installation at narrow space
as compact B4 size and to realize high reliability, durability and easy
maintenance.
The MWB-4 analyzer
is the worlds smallest, most compact multiparameter water analyzer available.
It uses reagent free technology which allows it to easily be used in remote
distribution networks with minimal service and maintainance requirements.
The key to this systems
is the reagent free design. Residual chlorine can be monitored continuously
using our unique polarographic sensor. This technology has been in use
with our handheld resdiual chlorine meter, RC-31P, and our process monitor,
the CLF-1610 for many years. By incorporating this sensor into a microflow
cell with other sensors, we have a truly "reagentless" and very
low flow monitoring device for free residual chlorine, turbidity, pH,
conductivity and temperature.
Features:
(1)
Measurement items are displayed in real time at the large color display.
Trend indication is available. It can be utilized to analyze cause of
abnormality.
- (2) Easy to
understand dialogic touch screen is adopted.
- (3) Separated
electronics unit and analyzing unit; insulated electronics unit can
prevent any electric accident while doing maintenance of detector in
the analyzing unit.
Specifications:
| Name of product |
Compact City Water Analyzer
|
| Model |
MWB4-70 |
| Measuring |
Turbidity, Color, Residual
Chlorine, |
| objects |
Electric Conductivity, pH,
|
|
Temperature, Pressure |
| Measuring range |
2 range-change over for turbidity
and |
| Change-over |
color |
| Indication |
Color touch screen LCD |
| method |
|
| Temp. |
For Residual Chlorine, EC
and pH |
| Compensation |
Between 0 and 40oC |
| Response time |
Within 3 min. 90% response
|
| Power Source |
100~240VAC+/-10% 50/60Hz |
| Power |
Approx. 60/82VA (AC100/240V)
|
| Consumption |
Max. Approx. |
|
85/108VA(AC100/240V) |
| Output |
DC4~20mA for each parameter
|
|
Isolated |
|
( -side for each parameter
is common) |
|
Load resistance 600 : or less
|
| Contact Signal |
Alarm 1: General alarm (Measurement
|
| Output |
up-upper/low-lower alarm,
light |
|
source abnormal light source,
residual |
|
chlorine motor abnormal, sensor
|
|
abnormal, start-up mode abnormal)
|
|
Alarm 2: General alarm (Concentration
|
|
upper /lower alarm, water
|
|
temperature compensation abnormal,
|
|
Automatic calibration abnormal)
|
|
Under Maintenance: During
ST-BY |
|
mode |
|
Duration of event: Under auto
|
|
cleaning, calibration, drain,
|
|
abnormality judgment |
|
(Contact capacity: 30VDC 0.2A
load |
|
resistance) |
|
Power off: Close when power
is off |
|
(Contact capacity: 24VDC 0.2A
load |
|
resistance) |
Reliability
- (1) Improved
stability of turbidity and color measurements Occurrence of air bubbles
in the cell is decreased by reversal flow cleaning system in the any
event when bubbles are generated.
- (2) Time-proven
non-contact swing rotary type electrode is adopted for chlorine electrode.
It enables stable measurement for long time with original ceramic
beads cleaning even at the time when sample flow varies.
- (3) An
electric dehumidification unit is equipped in order to prevent dew
condensation inside of the analyzer. Long product life can be realized
by preventing rust.
Example
of communication system configuration
Extensive
output system for measurement data. Two
digital communication interfaces, RS232C and RS485 are supplied as
standard other than DC 4~20mA analog output.
Superior
Maintainability
- (1) Remote
operation like cleaning and zero calibration can be done by contact
signal or RS-232C or RS485. It can easily save operator time and swignificant
maintenance cost.
- (2) The
measurement data is logged in internal memory for three months at
one minute interval values and for one year as hourly values. Logged
data can be copied to optional memory card and available software
to read data by PC.
- (3) As self-diagnostic
function including caution signal or Alarm signal would arise depending
on the contents of failure. It can offer effective debugging and simple
maintenance work.
-
- Measuring
parameters:
| Measured item
|
Measuring
method |
Measuring
range |
Minimum indication
|
Linearity
|
Repeatability
|
Calibration
method |
| Turbidity |
Transmitted light method |
0~2/0~4 degree |
0.01 degree |
Within +/-2.5% F.S. |
Within +/-2% F.S |
PSL standard solution |
| Color |
Transmitted light method |
0~10/0~20 degree |
0.01 degree |
Within +/-5% F.S. |
Within +/-3% F.S |
Color standard solution |
| Residual Chlorine |
Polarographic method |
0 ~ 2 mg/L |
0.001mg/L |
Within +/-2.5% F.S. |
Within +/-2.5% F.S |
DPD colorimeter method |
| Electric Conductivity |
AC 2 polar method |
0 ~ 50mS/m |
0.1mS/m |
Within +/-2% F.S. |
Within +/-2% F.S |
KCl Standard solution |
| pH |
Glass electrode method |
pH 2 ~ 12 |
0.01pH |
Within +/-0.1pH |
Within +/-0.1pH |
pH7, 9 standard solution |
| Temperature |
Platinum temperature sensor
|
0 ~ 50oC |
0.1 oC |
Within +/-0.5 oC |
Within +/-0.5 oC |
Standard thermometer |
| Pressure |
Diffusion semiconductor |
0 ~ 1MPa |
0.001MPa |
Within +/-0.5% F.S. |
Within +/-0.5% F.S |
Standard pressure indicator
|
-
General Maintenance:
The instrument should
be periodically inspected and routinely maintained and calibrated. The
maintenance cycle will depend on many factors including the environmental
and sample conditions. Generally, because this is a reagentless system,
this inspection/maintenance/calibration cycle should be performed on average
about every 3 months.
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 location, application
range, Data control requirements, indoor/outdoor applications, and maintenance
issues. It is very important to know these parameters for the particular
measurement or application you will be making. If you need additional
information, please have this information available when contacting Analyticon
in order to be able to process your request.
|
