OTT Flo-Dar Manuale utente
DOC026.98.80380
Flo-Dar™ Sensor
06/2013, Edition 1
User Manual
Bedienungsanleitung
Manuale dell'utente
Manuel d'utilisation
Manual del usuario
Uživatelská příručka
Bruksanvisning
Kullanım Kılavuzu
Navodila za uporabo
Korisnički priručnik
English...................................................................................................................................................................................................3
Deutsch...............................................................................................................................................................................................25
Italiano.................................................................................................................................................................................................49
Français..............................................................................................................................................................................................73
Español...............................................................................................................................................................................................98
Čeština..............................................................................................................................................................................................122
Svenska............................................................................................................................................................................................146
Türkçe................................................................................................................................................................................................169
Slovenski..........................................................................................................................................................................................191
Hrvatski.............................................................................................................................................................................................214
2
Table of contents
Specifications on page 3 Operation on page 20
General information on page 4 Maintenance on page 20
Installation on page 9 Replacement parts and accessories
on page 23
Specifications
Specifications are subject to change without notice.
Specification Details
Dimensions (W x D x H) 160.5 x 432.2 x 297 mm (6.32 x 16.66 x
11.7 in.); with SVS, D=287 mm (15.2 in.)
Weight 4.8 kg (10.5 lb)
Enclosure IP68 waterproof rating, polystyrene
Pollution degree 3
Protection class III
Installation category I
Operating temperature –10 to 50 °C (14 to 122 °F)
Storage temperature –40 to 60 °C (–40 to 140 °F)
Altitude 4000 m (13,123 ft) maximum
Power requirements Supplied by FL900 Series Logger, Flo-Logger
or Flo-Station
Interconnecting cable
(disconnect at both sensor and
logger ends)
Polyurethane, 0.400 (±0.015) inch diameter
IP68
Standard length: 9 m (30 ft); maximum length:
305 m (1000 ft)
Specification Details
Depth measurement Method: Ultrasonic
Standard operating range from Flo-Dar sensor
housing to liquid: 0–152.4 cm (0–60 in.)
Optional extended operating range from
transducer face to liquid: 0–6.1 m (0–20 ft)
(with 43.18 cm (17 in.) deadband), temperature
compensated
Accuracy: ±1%; ±0.25 cm (±0.1 in.)
Surcharge depth measurement Method: Piezo resistive pressure transducer
with stainless steel diaphragm
Auto zero function maintains zero error <
0.5 cm (0.2 in.)
Range: 3.5 m (138 in.); overpressure rating:
2.5 × full scale
Velocity measurement Method: Radar
Range: 0.23–6.10 m/s (0.75–20 ft/s)
Frequency Range: 24.075 to 24.175 GHz,
15 mW (EIRP) maximum
Accuracy: ±0.5%; ±0.03 m/s (±0.1 ft/s)
Certifications The Flo-Dar transmitter is certified to the
requirements that follow:
• Transmitter type: Field disturbance sensor
• Frequency: 24.125 GHz - Doppler pulse
• Maximum rated power output: 128 dbuV
(average) at 3 m (9.8 ft)
Certified to:
FCC Part 15.245: FCC ID: VIC-FLODAR24
Industry Canada Spec. RSS210. v7: IC No.:
6149A-FLODAR24
English 3
Specification Details
Flow measurement
Method Based on the continuity equation
Accuracy ±5% of reading is typical where flow is in a
channel with uniform flow conditions and is not
surcharged, ±1% full scale maximum
Surcharge conditions depth/velocity
Depth (standard with Flo-Dar
sensor)
Surcharge depth supplied by Flo-Dar sensor
Velocity (with optional
surcharge velocity sensor)
Method: Electromagnetic
Range: ±4.8 m/s (±16 ft/s)
Accuracy: ±0.046 m/s (±0.15 ft/s) or 4% of
reading, whichever is more
Zero stability: > ±0.015 m/s (±0.05 ft/s) typical
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
NOTICE
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
DANGER
Indicates a potentially or imminently hazardous situation which, if not avoided, will
result in death or serious injury.
W A R N I N G
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.
NOTICE
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, if noted
on the instrument, will be included with a danger or caution statement in
the manual.
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 that a risk of electrical shock and/or
electrocution exists.
4 English
This symbol indicates the presence of devices sensitive to Electro-
static Discharge (ESD) and indicates 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.
This symbol, when noted on the product, identifies the location of a
fuse or current limiting device.
This symbol indicates that the marked item requires a protective earth
connection. If the instrument is not supplied with a ground plug on a
cord, make the protective earth connection to the protective
conductor terminal.
Confined space precautions
DANGER
Explosion hazard. Training in pre-entry testing, ventilation, entry
procedures, evacuation/rescue procedures and safety work practices
is necessary before entering confined spaces.
The information that follows is supplied to help users understand the
dangers and risks that are associated with entry into confined spaces.
On April 15, 1993, OSHA's final ruling on CFR 1910.146, Permit
Required Confined Spaces, became law. This standard directly affects
more than 250,000 industrial sites in the United States and was created
to protect the health and safety of workers in confined spaces.
Definition of a confined space:
A confined space is any location or enclosure that has (or has the
immediate potential for) one or more of the following conditions:
• An atmosphere with an oxygen concentration that is less than 19.5%
or more than 23.5% and/or a hydrogen sulfide (H2S) concentration
that is more than 10 ppm.
•An atmosphere that can be flammable or explosive due to gases,
vapors, mists, dusts or fibers.
• Toxic materials which upon contact or inhalation can cause injury,
impairment of health or death.
Confined spaces are not designed for human occupancy. Confined
spaces have a restricted entry and contain known or potential hazards.
Examples of confined spaces include manholes, stacks, pipes, vats,
switch vaults and other similar locations.
Standard safety procedures must always be obeyed before entry into
confined spaces and/or locations where hazardous gases, vapors, mists,
dusts or fibers can be present. Before entry into a confined space, find
and read all procedures that are related to confined space entry.
FCC regulations
Use of this device is subject to the conditions that follow:
• There are no user serviceable items inside this device.
• The user must install this device in accordance with the supplied
installation instructions and must not modify the device in any manner
whatsoever.
• Any service that includes the transmitter must only be done by Hach
Company.
• The user must make sure that no one is within 20 cm (8 in.) of the
face of the radar transmitter when it is in operation.
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 numérique de classe A répond à toutes les exigences de la
réglementation canadienne sur les équipements provoquant des
interférences.
English 5
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 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
The Flo-Dar sensor measures the flow velocity and liquid depth in open
channels using radar and ultrasonic technology. The unit is made to
withstand submersion during surcharge conditions. The optional
surcharge velocity sensor supplies velocity measurements during
surcharge conditions.
Figure 1 shows the configuration of a Flo-Dar system in a non-
hazardous location.
Figure 1 System overview
1 Flo-Dar sensor with optional
surcharge velocity sensor
3 Mounting frame
2 Logger or controller 4 Non-hazardous environment
Theory of operation
The Flo-Dar sensor is installed above an open channel of water and
measures the surface velocity and depth from above the surface of the
water. The two measurements are used to calculate the flow rate.
6 English
During surcharge (submerged) conditions, a pressure transducer
measures depth. The optional surcharge velocity sensor (SVS) can be
used to measure velocity during surcharge conditions.
Surface velocity measurement
The surface velocity of the water is measured with radar technology. A
radar beam is transmitted from the sensor to the water surface at the
center of the channel. Some of the signal is reflected back at a slightly
different frequency. The difference in frequency, known as the Doppler
frequency, is directly proportional to the speed of the flow. Proprietary
algorithms are then used to calculate the average speed of the flow
stream.
Note: The radar velocity sensor does not operate under surcharge conditions.
Velocity measurements during surcharge
The optional surcharge velocity sensor (SVS) is activated when the flow
level increases to within 17.78 cm (7 in.) of the sensor mounting frame
and stays active until the flow decreases to 17.78 cm (7 in.) below the
sensor mounting frame. The mounting frame is installed 12.7–15.24 cm
(5–6 in.) above the crown of the pipe. This location puts the velocity-
sensing electrodes at the correct location in the flow below the elevation
of the crown of the pipe.
The SVS measures velocity with an electromagnetic sensor that makes
a magnetic field. When the water passes through the magnetic field, a
voltage results that is directly proportional to the speed of the water
passing the sensor.
Depth measurement
The water depth is measured with an ultrasonic pulse echo sensor. An
electronic pulse is sent to the water surface and some of the signal is
reflected back to the sensor. The transit time to the surface and back is
used to calculate the distance from the water surface to the sensor. The
pipe diameter is used to convert the distance to a water depth.
The depth sensor on the Flo-Dar unit can measure distances up to 1.5 m
(5 ft). For larger channels, an extended range sensor is available to
measure up to 6.1 m (20 ft).
During surcharge conditions, a pressure transducer in the Flo-Dar unit is
used to measure the water depth.
Flow calculations
The velocity and depth measurements are used with the pipe diameter
to identify the flow rate. The flow rate is calculated from the continuity
equation (1):
(1) Flow rate = Average velocity × Area
where
Flow rate = volume of liquid passing the sensor per unit of time (e.g.,
200 gallons per minute)
Average velocity = average velocity of the liquid, calculated with surface
velocity measurements and algorithms
Area = cross-sectional area of the liquid in the channel, calculated with
the channel dimensions and depth measurement
Product components
Make sure that all components have been received. Refer to Figure 2
and Figure 3. If any items are missing or damaged, contact the
manufacturer or a sales representative immediately.
English 7
Figure 2 Instrument components
1 Surcharge velocity sensor (SVS)
(optional)
4 Bubble level
2 Flo-Dar sensor 5 Cable connectors
3 Extended depth sensor (optional)
Figure 3 Wall mount hardware
1 Wall mount bracket 7 Standard frame
2 Spacer, 12-inch 8 Spacer, 2¼-inch
3 Anchor nut, 3/8 x 2¼ in. (2x) 9 Adjustable wall bracket
4 Anchor washer (2x) 10 Clamp bolts, ¼-20 x 1 in. (8x)
5 Anchor nut, 3/8-16 (2x) 11 Clamp half, not threaded (2x)
6 Frame for extended depth sensor
(optional)
12 Clamp half, threaded (2x)
8 English
Installation
DANGER
Explosion hazard. Trained personnel only must install or commission
the equipment.
Mechanical installation
Site location guidelines
For the best accuracy, install the sensor where the flow is not turbulent.
The ideal location is in a long, straight channel or pipe. Outfalls, vertical
drops, baffles, curves or junctions cause the velocity profile to become
distorted.
Where there are outfalls, vertical drops, baffles, curves or junctions,
install the sensor upstream or downstream as shown in
Figure 4–Figure 6. For upstream locations, install the sensor at a
distance that is at least five times the pipe diameter or the maximum fluid
level. For downstream locations, install the sensor at a distance that is at
least ten times the pipe diameter or the maximum fluid level.
If the location contains a junction and the flow in one pipe is much
higher, install the sensor on the wall near the lower flow pipe.
Figure 4 Sensor location near an outfall, vertical drop or baffle
1 Acceptable upstream sensor
location
5 Distance downstream: 10 × pipe
diameter
2 Outfall 6 Vertical drop
3 Distance upstream: 5 × maximum
level
7 Baffle
4 Acceptable downstream sensor
location
English 9
Figure 5 Sensor location near a curve or elbow
1 Acceptable upstream sensor
location
3 Distance downstream: 10 × pipe
diameter
2 Acceptable downstream sensor
location
4 Distance upstream: 5 × pipe
diameter
Figure 6 Sensor location near a junction
1 Acceptable upstream sensor
location
3 Distance downstream: 10 × pipe
diameter
2 Acceptable downstream sensor
location
4 Distance upstream: 5 × pipe
diameter
10 English
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