Hach LDO User manual
DOC023.97.80170
LDO Sensor
12/2012, Edition 4
USER MANUAL
MANUEL D'UTILISATION
MANUAL DEL USUARIO
MANUAL DO USUÁRIO
用户手册
ユーザーマニュアル
사용 설명서
คู่มือผู้ใช้
English..............................................................................................................................3
Français......................................................................................................................... 19
Español.......................................................................................................................... 37
Português...................................................................................................................... 56
中文................................................................................................................................. 74
日本語............................................................................................................................. 90
한글............................................................................................................................... 107
ไทย.................................................................................................................................. 123
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Table of Contents
Specifications on page 3 Operation on page 9
General information on page 4 Maintenance on page 14
Product overview on page 6 Troubleshooting on page 16
Installation on page 7 Replacement parts and accessories on page 17
Calibration for measurements on page 12
Specifications
Specifications are subject to change without notice.
Specification Details
Wetted materials Standard Probe, Standard Class 1-Div 2 Probe
• CPVC, sensor end and cable end
• Polyurethane, over-molding on cable end and cable jacket
• 316 stainless steel body and screws
• Viton, O-ring
• Noryl, nut on the cable end
Standard Seawater Probe, Seawater Class 1-Div 2 Probe
• CPVC, sensor end and cable end
• Polyurethane, over-molding on cable end and cable jacket
• PVC seawater body
• Seawater epoxy sealant
• Noryl, nut on the cable end
IP classification IP68
Wetted materials (sensor cap) Acrylic
Measurement range (dissolved oxygen) 0 to 20 ppm (0 to 20 mg/L)
0 to 200% saturation
Measurement accuracy (dissolved
oxygen)
Below 5 ppm: ± 0.1 ppm
Above 5 ppm: ± 0.2 ppm
Repeatability (dissolved oxygen) 0.1 ppm (mg/L)
Response time (dissolved oxygen) T90<40 seconds
T95<60 seconds
Resolution, sensor (dissolved oxygen) 0.01 ppm (mg/L); 0.1% saturation.
Measurement range (temperature) 0 to 50 °C (32 to 122 °F)
Measurement accuracy (temperature) ± 0.2 °C (± 0.36 °F)
Interferences No interferences from the following: H2S, pH, K+, Na+, Mg2+, Ca2+,
NH4 +, Al3+, Pb2+, Cd2+, Zn2+, Cr (total), Fe2+, Fe3+, Mn2+, Cu2+, Ni2+,
Co2+, CN–, NO3 –, SO4 2–, S2–, PO4 3–, Cl–, Anion Active Tensides,
Crude Oils, Cl2 < 4 ppm
Storage temperature –20 to 70 °C (–4 to 158 °F)
Maximum temperature 0 to 50 ºC (32 to 122 °F)
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Specification Details
Hazardous location classification
(9020000-C1D2 sensor only)
Class I Division 2, Groups A–D, T4 / Class I, Zone 2 Group 2C, T4
Note: This product does not fulfill the requirements of the 94/9/EC Directive (ATEX
Directive).
Certifications (9020000-C1D2 sensor
only)
ETL listed to ANSI/ISA, CSA and FM standards for use in hazardous
location.
Note: This product does not fulfill the requirements of the 94/9/EC Directive (ATEX
Directive).
Minimum flow rate Not required
Calibration/verification Air calibration: One point, 100% water-saturated air
Sample calibration: Comparison with standard instrument
Probe immersion depth and pressure
limits
Pressure Limits at 34 m (112 ft.), 345 kPa (50 psi) maximum; accuracy
may not be maintained at this depth
Sensor cable 10 m (30 ft) integral cable with quick disconnect plug (all sensor types)
Up to 100 m possible with extension cables (non-Class I, Division
2 sensor types only)
Up to 1000 m with junction box (non-Class I, Division 2 sensor types
only)
Probe weight 1.0 kg (2 lb, 3 oz)
Probe dimensions Standard probe (diameter x length): 49.53 x 255.27 mm (1.95 x
10.05 in.)
Seawater probe (diameter x length): 60.45 x 255.27 mm (2.38 x
10.05 in.)
Power requirements 12 VDC, 0.25 A, 3 W
Warranty Probe: 3 years against manufacturing defects
Sensor cap: 2 years against manufacturing defects
General information
In no event will the manufacturer be liable for direct, indirect, special, incidental or consequential
damages resulting from any defect or omission in this manual. The manufacturer reserves the right to
make changes in this manual and the products it describes at any time, without notice or obligation.
Revised editions are found on the manufacturer’s website.
Safety information
N O T I C E
The manufacturer is not responsible for any damages due to misapplication or misuse of this product including,
without limitation, direct, incidental and consequential damages, and disclaims such damages to the full extent
permitted under applicable law. The user is solely responsible to identify critical application risks and install
appropriate mechanisms to protect processes during a possible equipment malfunction.
Please read this entire manual before unpacking, setting up or operating this equipment. Pay
attention to all danger and caution statements. Failure to do so could result in serious injury to the
operator or damage to the equipment.
Make sure that the protection provided by this equipment is not impaired. Do not use or install this
equipment in any manner other than that specified in this manual.
Use of hazard information
D A N G E R
Indicates a potentially or imminently hazardous situation which, if not avoided, will result in death or serious injury.
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WARNING
Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious
injury.
CAUTION
Indicates a potentially hazardous situation that may result in minor or moderate injury.
N O T I C E
Indicates a situation which, if not avoided, may cause damage to the instrument. Information that requires special
emphasis.
Precautionary labels
Read all labels and tags attached to the instrument. Personal injury or damage to the instrument
could occur if not observed. A symbol on the instrument is referenced in the manual with a
precautionary statement.
This is the safety alert symbol. Obey all safety messages that follow this symbol to avoid potential
injury. If on the instrument, refer to the instruction manual for operation or safety information.
This symbol indicates the presence of a light source that may have the potential to cause minor eye
injury. Obey all messages that follow this symbol to avoid potential eye injury.
This symbol indicates the presence of devices sensitive to Electro-static Discharge (ESD) and
indicated that care must be taken to prevent damage with the equipment.
Electrical equipment marked with this symbol may not be disposed of in European public disposal
systems after 12 August of 2005. In conformity with European local and national regulations (EU
Directive 2002/96/EC), European electrical equipment users must now return old or end-of-life
equipment to the Producer for disposal at no charge to the user.
Note: For return for recycling, please contact the equipment producer or supplier for instructions on how to return end-
of-life equipment, producer-supplied electrical accessories, and all auxiliary items for proper disposal.
Certification
Canadian Radio Interference-Causing Equipment Regulation, IECS-003, Class A:
Supporting test records reside with the manufacturer.
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing
Equipment Regulations.
Cet appareil numèrique de classe A répond à toutes les exigences de la réglementation canadienne
sur les équipements provoquant des interférences.
FCC Part 15, Class "A" Limits
Supporting test records reside with the manufacturer. The device complies with Part 15 of the FCC
Rules. Operation is subject to the following conditions:
1. The equipment may not cause harmful interference.
2. The equipment must accept any interference received, including interference that may cause
undesired operation.
Changes or modifications to this equipment not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment. This equipment has been tested
and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules.
These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instruction
English 5
manual, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference, in which case the user will be required to
correct the interference at their expense. The following techniques can be used to reduce
interference problems:
1. Disconnect the equipment from its power source to verify that it is or is not the source of the
interference.
2. If the equipment is connected to the same outlet as the device experiencing interference, connect
the equipment to a different outlet.
3. Move the equipment away from the device receiving the interference.
4. Reposition the receiving antenna for the device receiving the interference.
5. Try combinations of the above.
Product overview
D A N G E R
Chemical or biological hazards. If this instrument is used to monitor a treatment process and/or
chemical feed system for which there are regulatory limits and monitoring requirements related to
public health, public safety, food or beverage manufacture or processing, it is the responsibility of the
user of this instrument to know and abide by any applicable regulation and to have sufficient and
appropriate mechanisms in place for compliance with applicable regulations in the event of malfunction
of the instrument.
This sensor is designed to work with a controller for data collection and operation. The sensor can be
used with several controllers. Refer to the controller-specific user manual for more information.
The primary applications for this sensor are municipal and industrial wastewater applications. LDO
sensor technology does not consume oxygen, and can measure DO concentration in low or no-flow
applications. Refer to Figure 1.
Figure 1 LDO sensor
1 Sensor cap 3 1-inch NPT
2 Temperature sensor 4 Connector, quick-connect (standard)
6 English
LDO Sensor component list
Make sure that all components shown in Figure 2 have been received. If any items are missing or
damaged, contact the manufacturer or a sales representative immediately. Refer to Figure 2.
Figure 2 Sensor component list
1 LDO sensor12 Calibration bags (2x)
Installation
WARNING
Personal injury hazard. Only qualified personnel should conduct the tasks described in this section of the manual.
Validate the sensor type
D A N G E R
Explosion hazard. Connect only peripheral components that are clearly marked as certified for Class 1,
Division 2 Hazardous Locations.
N O T I C E
The hazardous location certified version of this product does not fulfill the requirements of the 94/9/EC Directive
(ATEX Directive).
1. Go to the connector end of the cable.
2. Read the label on the connector end of the cable. For hazardous location certified sensors, the
label will show "Rated: Class 1 Division 2".
3. Examine the connector.
• Hazardous location certified sensors have a safety lock connector. Refer to Figure 3
on page 8.
• Sensors that are not certified for hazardous locations have a quick-connect connector, without
a safety lock.
1Included user manual is not shown.
English 7
Connect the sensor in a hazardous location
D A N G E R
Explosion hazard. This equipment is suitable for use in non-hazardous locations or Class 1, Division 2,
Groups A, B, C, D Hazardous Locations with specified sensors and options when installed per the
Hazardous Location Installation Control Drawing. Always refer to the Control Drawing and applicable
electrical code regulations for proper installation instructions.
D A N G E R
Explosion hazard. Do not connect or disconnect electrical components or circuits to the equipment
unless power has been removed or the area is known to be non-hazardous.
N O T I C E
Use only a hazardous location certified sensor and cable lock in hazardous locations. The hazardous location
certified version of this product does not fulfill the requirements of the 94/9/EC Directive (ATEX Directive).
For more information, refer to Validate the sensor type on page 7 .
1. Remove the connector cap from the controller. Keep the connector cap to seal the connector
opening when the sensor is removed.
2. Connect the sensor to the controller. Refer to the controller manual for more information.
3. Close the safety lock over the connector.
4. To remove the connector safety lock, use a small flat screwdriver. Refer to Figure 3.
Figure 3 Connector safety lock
Connect the sensor in a non-hazardous location
Refer to Figure 4 to connect an LDO sensor to an sc controller. Refer to the specific sc controller
manual for hard-wiring instructions.
Figure 4 Connect the LDO sensor (non-hazardous location sensor shown)
After the sensor is attached, scan for the sensor. Refer to Install the sensor on page 8.
Install the sensor
There are two options to install the sensor:
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• Connect the sensor while power to the controller is off. The controller will look for and install new
sensors when it is turned on.
• Connect the sensor while power to the controller is on. Use the Scan Devices command to install
the new sensor:
Option Description
sc200 controller Go to MENU>TEST/MAINT>SCAN DEVICE
sc100 controller Go to MENU>TEST/MAINT>SCAN SENSORS
sc1000 controller Go to MENU>SYSTEM SETUP>DEVICE MANAGEMENT>SCANNING FOR NEW
DEVICES
Refer to Connect the sensor in a non-hazardous location on page 8 for digital sensor connection.
Sensor installation options
The installation and accessory options available for the LDO sensor are supplied with installation
instructions in the hardware kit. Figure 5 shows several installation options. To order installation
hardware, refer to Replacement parts and accessories on page 17.
Figure 5 Installation options
1 Rail mount 4 Chain mount
2 Float mount 5 Union mount (not seawater probe compatible)
3 Air blast system mount (not seawater probe
compatible)
Operation
User navigation
Refer to the controller documentation for keypad description and navigation information.
English 9
Configure the sensor
Use the Configure menu to enter identification information for the sensor and to change options for
data handling and storage.
For information about sensor installation, refer to Install the sensor on page 8.
Make sure that all of the Configuration menu values are correct for the application.
1. Go to MENU>SENSOR SETUP>[Select Sensor]>CONFIGURE.
2. Select an option, ENTER. The list of available options is shown in the table below.
Option Description
EDIT NAME Changes the name that corresponds to the sensor on the top of the measure screen. The
name is limited to 10 characters in any combination of letters, numbers, spaces or
punctuation.
SET UNITS TEMP–Sets the temperature units to °C (default) or °F.
MEASURE–Set the measurement units in mg/L, ppm or % .
ALT/PRESS–Set the altitude in m or ft, or set the atmospheric pressure units in mmHg or
torr. (Default value = 0 ft)
ALT/PRESS Enter the value of the altitude or atmospheric pressure. This value must be accurate to
complete % saturation measurements and calibration in air. (Default = 0 ft).
SALINITY Enter the salinity value. Salinity range: 0.00 to 250.00 parts per thousand (‰). Refer to
Enter a salinity correction value on page 11 for more information. (Default value = 0)
SIGNAL AVERAGE Set the time interval to average signal in seconds
CLEAN INTRVL Set the time interval for manual sensor cleaning in days (Default value = 0 days. A value
of 0 days disables the clean interval.)
RESET CLN INTRVL Set the time interval to the last saved clean interval
LOG SETUP Sets the time interval for data storage in the data log—0.5, 1, 2, 5, 10, 15 (default), 30,
60 minutes.
SET DEFAULTS Restores the configurable default values for the sensor. Does not change the setting for
slope or offset.
Enter the atmospheric pressure value
The factory setting for atmospheric (air) pressure is 0 ft, or sea level. To change the default value,
use the steps in this procedure. The adjustment for air pressure is entered as either elevation or as
pressure units (preferred).
Note: Accurate air pressure is critical for saturated air calibration (Calibration with air on page 12). Use only
absolute pressure, not adjusted. If the absolute air pressure is not known, use the correct elevation for the location.
1. Go to MENU>SENSOR SETUP>[Select Sensor]>CONFIGURE>SET UNITS>AIR PRESS/ALT
UNITS.
2. Select one of the unit options listed:
Option Description
ft Feet—unit of measure for elevation
mMeters—metric unit of measure for elevation
mmHg Millimeters of mercury—metric unit of measure for absolute air pressure
torr Unit of measure for absolute air pressure
3. Confirm the selection. The value entry screen will show the selected units.
4. Enter the value, then confirm.
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