HF scientific Micro200BW Turbidimeter - 0 -1000 NTU - Manual (Page 20)

Page 6
MICRO 200 BW 0 - 1000 NTU (5/05)
Rev. 3.1
II. INSTALLATION
A. PACKING LIST FOR THE MICRO 200 BW
CONTENTS QUANTITY
Instruction Manual 1
MICRO 200 BW 1
Desiccant Tray Assembly 1
Accessory kit - includes:
0.02 NTU reference standard 1
Flow control clamp (stainless steel) 1
Spare flow through cuvette 1
Light Shield Cap 1
A listing of recommended spare parts appears on page
32 of this manual.
B. UNPACKING AND INSPECTION
Use extreme care when unpacking your MICRO 200
BW and note that all of the contents are included. Check
for any damage that may have occurred during ship-
ping. If there are any omissions, report this immedi-
ately to the your local distributor or the Quality Assur-
ance Dept. at HF scientific, inc. If there is any shipping
damage; notify the shipping company immediately and
arrange for a prompt inspection.
C. MOUNTING
CAUTION: Instrument is not designed for outdoor
installation. The LCD screen will be dam-
aged by UV rays. Contact factory for
available enclosures.
The maximum allowable ambient temperature is 122°F
(50°C).
NOTE: Be careful during installation not to violate the
moisture integrity of the sensor, interface or
analyzer housings. The analyzer requires ap-
proximately two hours to reach it’s final operat-
ing temperature. Further adjustment of the
LCD brightness may be required during this
period.
1. Analyzer
The location of the analyzer should be given careful
consideration. As an example, if the MICRO 200 BW
is to be used for performing backwash, the analyzer
must be mounted where it can be viewed at the back-
wash control station. In this example, for convenience
of maintenance, the turbidity sensor should be mounted
at the backwash station and have the water plumbed to
it. The analyzer must be mounted in a location that
avoids direct water contact. Refer to figure 2 on page 7
for outline dimensions. Allow enough room for the
analyzer to pivot on the mounting bracket upside down,
to make connections.
After mounting, the angle of analyzer may be adjusted
for best visibility.
2. Sensor - Turbidity
For the outline drawing of the turbidity sensor refer to
figure 3 on page 7. Allow enough room for easy access
to both the flow through unit and the lamp module.
Avoid mounting the sensor in a location that will put
the sensor housing in contact with dripping water, as
this will present problems when performing periodic
maintenance.
The sensor is equipped with a foot valve, that opens in
case the flow through cuvette ruptures, to prevent
damage to the sensor. The foot valve drain tube can be
connected to a 5/8" (15.9 mm) tube (not supplied) to
direct the flow of water to a convenient drain. Keep the
length of this external tube to a minimum.
a. Installing & Replacing Pack Desiccant Tray
Before operating the
Micro 200BW for the
first time the replace-
able desiccant pouch
must be installed.
Please refer to Figure
1 while installing for
the first time. To ini-
tially install unscrew
the four thumbscrews
and remove the elec-
tronics half of the sen-
sor. Open the foil bag
and remove the
dessicant pouch and
the indicator card. In-
stall these items and
replace the top portion
of the sensor.
Proper use of the
supplied desiccant is
essential in maintaining
the performance of the
Figure 1
Desiccant Tray Installation