Xylem MJK 713 User manual

1
Manual
US 3.10 713 FLOW CONVERTER 1905 - SW 833062 MJK Automation
Blokken 9
DK-3460 Birkerød
Denmark
Tel [phone]
www.mjk.com
MJK 713
Open Channel Flowmeter

2
Manual
US 3.10 713 FLOW CONVERTER 1905 - SW 833062 MJK Automation
Blokken 9
DK-3460 Birkerød
Denmark
Tel [phone]
www.mjk.com
UL Approvals
UL-CUL listed, File # E 194021 UL 508/c22: 2 No. 142-M1987.
Declaration of Conformity
Jens Kruse
06.07.2011
MJK Expert Series 1400 / 3400 Pressure Level Transmitter
MJK Expert Series 1400 / 3400 Pressure Level Transmitter
Konformitetserklæring
Vi, MJK Automation A/S,
DK-3460 Birkerød, påtager os
det fulde ansvar for at produktet
Declaration of Conformity
We, MJK Automation A/S,
DK-3460 Birkerød, declare
under our sole responsibility
that the product
Konformitätserklärung
Wir, MJK Automation A/S,
DK-3460 Birkerød, erklären in
alleiniger Verantwortung,
dass das Produkt
som denne erklæring angår,
er i overensstemmelse med
følgende standard(er) eller andre
normdokument(er).
EN60079.0:2006, EN60079.11:2007
EN61000-6-1:2007
EN61000-6-3:2007
efter bestemmelserne i
direktiv
2004/108/EC
Declaration de conformite
Nous, MJK Automation A/S,
DK-3460 Birkerød, déclarons
sous notre seule responsabilité
que le produit
auquel se réfère cette déclara-
tion est conforme á la (aux)
norme(s) ou autre(s) document(s)
normatif(s)
EN60079.0:2006, EN60079.11:2007
EN61000-6-1:2007
EN61000-6-3:2007
conformément aux dispositions
de Directive
2004/108/EC
to which this declaration relates
is in conformity with the following
standard(s) or other normative
document(s).
EN60079.0:2006, EN60079.11:2007
EN61000-6-1:2007
EN61000-6-3:2007
following the provisions of
Directive
2004/108/EC
Dichiarazione di conformità
Noi, MJK Automation A/S,
DK-3460 Birkerød, dichiariamo
sotto la nostra esclusiva respon-
sabilità che l’apparecchio
al quale questa dichiarazione si
riferisce, è conforme alla seg-
uente normativa(e) standard o ad
altri documenti di normativa(e)
EN60079.0:2006, EN60079.11:2007
EN61000-6-1:2007
EN61000-6-3:2007
conformemente alla disposizioni
della Direzione
2004/108/EC
auf das sich diese Erklärung
bezieht mit der/den folgenden
Nor me(en) oder normativen
Dokument(en) übereinstimmt.
EN60079.0:2006, EN60079.11:2007
EN61000-6-1:2007
EN61000-6-3:2007
Gemäss den Bestimmungen der
Richtlinie
2004/108/EC
Declaración de Conformidad
Nosotros, MJK Automation A/S,
DK-3460 Birkerød, declaramos
bajo nuestra única responsabili-
dad que el producto
al cual se refiere esta de-
claración, está en conformidad
con la(s) siguente(e) norma(s) u
otros documentos normativos
EN60079.0:2006, EN60079.11:2007
EN61000-6-1:2007
EN61000-6-3:2007
según las disposiciones de la(s)
directiva(s)
2004/108/EC
DK: [phone]
NO: [phone]
SE: [phone]
NL: [phone]
USA: [phone]
AUS: [phone]
MJK Automation A/S

3
Manual
US 3.10 713 FLOW CONVERTER 1905 - SW 833062 MJK Automation
Blokken 9
DK-3460 Birkerød
Denmark
Tel [phone]
www.mjk.com
Contents
Introduction 5
Safety instructions 5
Repair 5
Hazardous areas 5
Product identification 6
Mounting 6
General 6
Explosion hazardous areas 6
Mechanical mounting 7
MJK 713 Flowmeter 7
Shuttle®Ultrasonic Sensor 7
Measuring distances for Parshall flumes 9
Measuring distances for Palmer & Bowlus flumes 9
Measuring distances for rectangular weirs 9
Measuring distances for V-notch weirs 9
Measuring along a wall or other plane 10
Flow measurement with smaller flumes / weirs 10
The spread of the ultrasonic signal 10
Measuring through a concrete deck 11
Measurement through a pipe for foam protection. 11
Model 3100 Hydrostatic Transmitter 12
Measuring distances for Parshall flumes 12
Measuring distances for Palmer & Bowlus flumes 12
Measuring distances for rectangular weirs 13
Measuring distances for V-notch weirs 13
Electrical mounting 14
MJK 713 System Package 1 14
MJK 713 System Package 2 14
MJK 713 System Package 3 14
Cable extension 15
Ultrasonic sensor 15
Cutting the cable 15
Hydrostatic transmitter 16
Cutting the cable 16
Display and keyboard 17
Quick start 17
Initial startup 18

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Manual
US 3.10 713 FLOW CONVERTER 1905 - SW 833062 MJK Automation
Blokken 9
DK-3460 Birkerød
Denmark
Tel [phone]
www.mjk.com
Indications 19
Function keys 20
Flow key Q(t) 20
Totalizer key SQ(t) 20
Alarm key 21
Power loss alarm 21
Sample key 21
Menu key 22
System Configuration 23
1.0 Set basic parameters 23
1.1 Set date and time 23
1.2 Access code enabled/disabled 23
1.3 Enter new access code 23
1.4 Select unit measurement 23
1.5 Select unit volume 23
1.6 Select unit flow rate 23
2.0 Set sensor parameters 23
2.1.1 Distance from zero to bottom of sensor 23
2.1.2 Hydrostatic sensor range 23
2.2 Level averaging 23
3.0 Choose primary device 24
3.1 Parshall flumes 24
3.2 Palmer & Bowlus flumes 24
3.3 V-notch weir 24
3.4 Rectangular weir 24
3.4.1 With or without contraction 24
3.4.2 Rectangular weir crest width 24
3.5 Q(h) linearization 24
3.5.1 Number of Q(h) points 24
3.5.2 Select decimal point for the flow values 24
3.5.3 Linearization height value 24
3.5.4 Linearization flow value 24
3.6 Optional formula 24
3.6.1 Optional formula - enter exponent 24
3.6.2 Select decimal point for coefficient 24
3.6.3 Optional formula - enter coefficient 24
3.7 Flow range / level range 25
4.0 Set digital output parameters 25
4.1 Select digital outputs (1-5) 25
4.2 Select function for DO 25
4.3 Alarm flow rate low 25
4.4 Alarm flow rate high 25
4.5 Set volume between pulses 25
4.6 Digital output ON-time 25
4.7 Choose delay on signal 26
4.8 Digital output NC/NO 26
5.0 Analog output 0-20 / 4-20 mA 26
Menu chart 27
Indication menus 27
Configuration menus 27
Appendix 30
A Factory settings 30
B Trouble shooting 31
C Technical specifications 32
D Hardware adjustments 33
E System Package 2 -
Shuttle®used as signal amplifier 34
F Max. head to max. nominal flow 37

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Manual
US 3.10 713 FLOW CONVERTER 1905 - SW 833062 MJK Automation
Blokken 9
DK-3460 Birkerød
Denmark
Tel [phone]
www.mjk.com
Introduction
Thank you for choosing an MJK 713 Open Channel Flow-
meter.
The MJK 713 Open Channel Flowmeter is a high quality
flow measurement instrument, in which the relation
between functions, userfriendliness and precision is
optimum.
The MJK 713 Open Channel Flowmeter use either an
ultrasonic transmitter or a hydrostatic pressure
transmitter. This must be specified at time of ordering.
The MJK 713 Open Channel Flowmeter measures the
flow rate of water or wastewater in all types of open weirs
and flumes and provides a display of both current flow
rate and totalized flow.
Yet MJK 713 is simple to set up and use in almost all ap-
plications, we recommend that you read this manual thor-
oughly in order to gain full use from the equipment.
You can always contact your representative or the MJK
Service Hotline for advice and guidance. Also, take a look
at www.mjk.com for additional product and application
information.
MJK Automation A/S is a Xylem brand.
Safety instructions
1: Read this manual carefully.
2: Be aware of the environment on the installation site.
Wear necessary protective equipment and follow all
current safety regulations.
3: MJK 713 can provide a start signal for dangerous
machinery. Always ensure that
connected machinery and other equipment are ef-
fectively being put out of service (i.e. removal of main
fuses, lock main and/or security switches in off posi-
tion) before commencing installation, fault finding,
service and maintenance work etc.
4A: MJK 713 model 2500: There is a risk of lethal
electrical chock from terminal 1 to 5 and L-0.
Be careful not to touch these while the unit is in ser-
vice.
4B: MJK 713 model 3000: There is a risk of lethal
electrical chock from terminal L-0. Be careful not to
touch these while the unit is in service.
Repair
1: Repair of Ex approved equipment (ultrasonic trans-
mitter) must only be made by MJK or by a service
representative approved by MJK.
Hazardous areas
1: All current local and national standards, regulations
regarding installation and use of Ex or hazardous
zone approved equipment, certifications and safety
instructions for Ex equipment, that have been used
together with the installation of the Shuttle®ultra-
sonic transmitter must be strictly observed.

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Manual
US 3.10 713 FLOW CONVERTER 1905 - SW 833062 MJK Automation
Blokken 9
DK-3460 Birkerød
Denmark
Tel [phone]
www.mjk.com
Product identification
General
A standard MJK 713 is delivered for two different measur-
ing ranges (0 - 1 ft and 0 - 3 ft).
It is very important that the measuring range is correct
for the flume in question in order to obtain maximum
measuring accuracy.
Check that the item(s) delivered corresponds to the or-
dered item(s). The item number is printed on a label that
is sticked onto the packing. Shown below is the label for
a MJK 713 System Package 1 delivery including a MJK
713 flowmeter and a Shuttle®ultrasonic sensor:
An identical marking can
be found on the right
hand side of the level
transmitter cabinet:
Mounting
General
MJK 713 measures the flow in an open flume or weir
based on the level of the head in the flume. The method
of measurement are based on the following mathematical
function:
Flow Q = f(head x× constant)
where the exponent xand the constant depends on the
type of weir or flume.
The flow converter has 3 different linearization
systems depending on how the volume of water is mea-
sured:
- preprogrammed formulas for different dimensions of
the most common flumes and weirs, Parshall flumes,
Palmer & Bowlus flumes, V-notch weirs, and rectan-
gular weirs.
- for other flumes and weirs with a known calculation
formula the exponent and the factor of the calcula-
tion formula can be set.
- for flumes where no calculation formula exists, a
number of known flow values can be entered,
on which a point linearization and curve extrapolation
is calculated.
It is obvious that the flow calculation is highly dependant
on the accuracy of the level measurement. It is therefore
important to follow the mounting instructions carefully for
the Shuttle®Ultrasonic Sensor (MJK 713 System Pack-
age 1 or 2) or MJK model 3100 Pressure Transmitter
(MJK 713 System Package 3).
Explosion hazardous areas
The Shuttle®ultrasonic sensor is Ex approved and can be
mounted in Zone 2 without the need of a
zener barrier. It is not approved for Class I Division I
zones.
The Flowmeter (= the electronic box with
display) must not be mounted in explosive
hazardous areas.
➀
➁
➃
➂
➂
➁
➀ Item number
➁ Item description
➂ Serial number
➃ Software version

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Manual
US 3.10 713 FLOW CONVERTER 1905 - SW 833062 MJK Automation
Blokken 9
DK-3460 Birkerød
Denmark
Tel [phone]
www.mjk.com
Mechanical mounting
MJK 713 Flowmeter
The MJK 713 Flowmeter is in NEMA 4X enclosure and
can be mounted outdoors directly on a wall or in a panel
using a panel mounting kit (order no. 200105). A sun
shield (order no. 200115) is recommended in very sunny
locations.
The MJK 713 Flowmeter must be
mounted vertically in order to observe the
NEMA4X standard.
Mechanical dimensions for the MJK 713 Flowmeter.
The drawing below shows the drilling distances for
mounting the cabinet on a wall:
A full scale print of above drawing can be found at the
end of this manual.
2a: To ensure a reliable and precise level measurement it is
of vital importance that the ultrasonic sensor points down
absolutely vertical against the liquid surface.
1: The ultrasonic sensor is equipped with a nut for bracket
mounting. Note the recess on the nut - it must be fitted
safely in the bracket for firm fixing to the bracket:
Shuttle®Ultrasonic Sensor
The following are extremely important when
mounting the ultrasonic transmitter:
1: It should be mounted securely.
2: It should be mounted absolutely vertical.
Use a spirit level in TWO directions.
3: It should be mounted in the correct distance from
the bottom of the flume / weir.
Observe the blocking distance!
4: It should be mounted in the correct distance from
the inlet.

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Manual
US 3.10 713 FLOW CONVERTER 1905 - SW 833062 MJK Automation
Blokken 9
DK-3460 Birkerød
Denmark
Tel [phone]
www.mjk.com
2b: We deliver two types of sensor brackets that can be used
in almost any installation. The bracket shown is a flume
mounting bracket (order no. 200230 / 200235).
3: The ultrasonic sensor should be installed so that
the bottom of the sensor is as close as possible to
the max. height of the head but not closer than the
blocking distance.
Measuring range: 0 - 1’ 0 - 3’
Blocking distance: )* 16” 16”
Min. measuring range: 4” 12”
Max. measuring range: 12” 36”
Max. sensor height ➁: 30" 54"
)* 14” for System Package 2.
(w. Shuttle®Level Transmitter as signal amplifier.)
Maximum sensor height ➁ = Blocking distance ➀
+ measuring range ➃
➀ Blocking distance ➁ Sensor height
➂ Actual measurement ➃ Measuring range
➀
➁
➂
➃

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Manual
US 3.10 713 FLOW CONVERTER 1905 - SW 833062 MJK Automation
Blokken 9
DK-3460 Birkerød
Denmark
Tel [phone]
www.mjk.com
Measuring distances for Palmer & Bowlus flumes
Diameter D: Distance L: Diameter D: Distance L:
4” 2” 18” 9”
6” 3” 21” 10.5”
8” 4” 24” 12”
10” 5” 27” 13.5”
12” 6” 30” 15”
15” 7”
Measuring distances for rectangular weirs
- with and without side contraction
The distance L should be between 4 to 5 times the nomi-
nal width b.
Measuring distances for V-notch weirs
The distance L should be between 3 to 4 times the
height h of the notch.
4: Mount the sensor in the correct upstream distance
from the head in the flume / weir.
The distance depends on the dimension and type
of flume / weir.
Measuring distances for Parshall flumes
Throat width b: Distance L: Throat width b: Distance L:
1” 10” 36” 43”
2” 11” 48” 47”
3” 12” 60” 51”
6” 16” 72” 56”
9” 23” 84” 59”
12” 36” 96” 63”
18” 37.5” 120” 72”
24” 39” 144” 80”
(L = D/2)

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Manual
US 3.10 713 FLOW CONVERTER 1905 - SW 833062 MJK Automation
Blokken 9
DK-3460 Birkerød
Denmark
Tel [phone]
www.mjk.com
The spread of the ultrasonic signal
The table and illustration below show the spread of the
ultrasonic signal in conjunction to the measuring distance:
Measuring Beam Minimum distance to
SMOOTH
distance: spread: wall (from center line):
1’ 5” 2.3”
2’ 5” 2.6”
3’ 6” 2.9”
Table 1: The ultrasonic signal spread along a smooth wall and minimum
distance to center line in conjunction to the measuring distance.
Accordingly, as the measuring distance increases, the
distance from the center line to a smooth wall should also
be increased.
To avoid false echoes from e.g. edges, a minimum dis-
tance as shown on the drawing must be kept. The sensor
can be mounted in a smooth pipe if the distance cannot
be obtained. (See figure 1.)
Figure 1: The signal spread in conjunction with the measurement distance. The
signal spread should be increased by 50 - 100 % if the surface is not
smooth!
Flow measurement with smaller flumes / weirs
Smaller flumes may cause problems if the ultrasonic sig-
nal reflects on the edges of the flume as shown below
(fig. 2a).
The edges should be cut off (fig. 2c) or the ultrasonic
sensor should be mounted in a pipe (fig. 2b) with smooth
inner surface.
Measuring along a wall or other plane
The values in table 1 assume the ultrasonic signal is sent
along a smooth surface like a wall or plane without any
projections, joints, butts etc.
If the surface is not smooth or has projections (i.e. joints
on prefab elements), the ultrasonic signal will be im-
pedeaded too much, and for that reason
the values for minimum distance to wall in table 1 should
be increased with 50 - 100 % !
(min. dia. 5 in)
Figure 2: Use a pipe (B) or cut off the edges (C) on small weirs to prevent
disturbing reflections from the flume edges.
Blocking
distance!
A B C