Hach LDO101 User Manual

• Make sure to install the shroud before field use to prevent damage to the sensing elements. Refer
to Remove or install the shroud on page 9. The probe warranty does not include such damage.
• To deploy a rugged probe at a distance, toss the probe body with a slow underhand throw. Do not
throw the probe by the cable to prevent damage to cable, the probe or the user.
6.2 Sample measurement procedure
1. Rinse the probe
with deionized water.
Dry the probe with a
lint-free cloth.
Rugged probes:
install the shroud.
2. Put the probe in
the sample 25 mm
(1 inch) or more. Do
not put the probe on
the bottom or sides
of the container. Stir
the sample at a
moderate rate or put
the probe in flowing
conditions.
3. Shake the probe
from side to side to
remove air bubbles.
Rugged probes:
move the probe up
and down to remove
air bubbles.
4. Stir gently, then
read the dissolved
oxygen value of the
sample. The display
shows the dissolved
oxygen value when
the reading is stable.
Section 7 Maintenance
7.1 Clean the probe
N O T I C E
The LDO sensor cap has a protective black layer to increase the life of the LDO sensor. Do not rub
the black layer to clean the LDO sensor cap. Do not use alcohol or other organic solvents to clean
the LDO sensor cap.
Keep the LDO sensor cap clean for best results. Use only water and neutral detergents to clean the
probe.
1. Remove the shroud. Refer to Remove or install the shroud on page 9.
2. If water is seen between the LDO sensor cap and lens:
a. Remove the LDO sensor cap.
b. Blot dry the LDO sensor cap and lens with a soft dry cloth. Refer to Figure 3.
If the probe lens is dirty, rinse the lens with dilute isopropyl alcohol (10% or less) or deionized
water. Blot dry with a non-abrasive cloth. Do not rub the lens or use abrasive cleaners.
c. Install the LDO sensor cap and tighten by hand. Do not tighten more than is necessary for a
good seal.
3. Put the probe in a neutral cleaning solution and stir the solution. Do not rub or remove the black
layer on the LDO sensor cap.
Note: If disinfection is necessary, put the probe in a dilute alcohol solution for a maximum of 2 minutes and
rinse immediately with deionized water. Do not use an alcohol solution more than two times a day.
4. Rinse the probe with deionized water. Blot dry with a lint-free cloth.
5. Install the shroud. Refer to Remove or install the shroud on page 9.
8
English

Hach LDO101 Specifications

General

Brand	Hach
Model	LDO101
Category	Measuring Instruments
Language	English