APPENDIX 4: TEMPLATE FOR HYDREKA CALIBRATION CERTIFICATE FOR THE HYDRINS 2 /
HYDRINS 2 MINI FLOW METER ............................................................................................. 77
TABLE OF ILLUSTRATIONS .................................................................................................... 78
LIST OF TABLES .................................................................................................................... 80
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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Qualified personnel:
The electromagnetic insertion flow meter described in this document must be handled only by
personnel qualified for each specific task. The documentation concerning this task must be obeyed.
This applies in particular to safety instructions and warnings. Thanks to their training and experience,
qualified persons are able to recognise and avoid the risks involved in handling this electromagnetic
insertion flow meter.
Use of the flow meter and its display unit for their intended purpose
Remember the following points:
HYDREKA products must only be used for the applications described in the catalogue and the related
technical documentation. Their use in conjunction with products and components from other brands
is subject to HYDREKA approval. For the products to operate properly and safely, they must be
transported, stored, installed, assembled, commissioned, used, and maintained in accordance with
good professional practice. The allowable environmental conditions and the recommendations in the
related documentation must be observed.
Disclaimer:
We have checked the compliance of the contents of the present document. We are however unable
to rule out the possibility of any discrepancy, and cannot guarantee complete compliance. If any
errors are discovered during the use of this manual, we will make a note of them and make the
necessary corrections in the next edition.
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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1 Safety instructions
For the flow meter and its display unit to operate properly and safely, they must be transported,
stored, positioned and assembled in accordance with precise rules, and must be used and
maintained with care. This equipment must be installed and used exclusively by qualified
personnel.
No alterations to the equipment are permitted, including opening it or making inappropriate
modifications.
If this instruction is not obeyed, the CE marking and the guarantee will cease to be valid.
This equipment includes lithium batteries, which can cause a hazard if misused. Obey the
following rules:
Do not short-circuit or charge the batteries or reverse the polarity.
Do not expose the batteries to temperatures outside the specified range. Do not
incinerate them.
Do not crush, puncture, or open the cells. Do not disassemble the battery packs.
Do not solder the body of the batteries.
Do not expose the batteries or packs to water.
When returning the devices for calibration or maintenance:
Lithium batteries are classified as dangerous goods in accordance with dangerous goods
regulations UN 3090 and UN 3091. These directives impose the use of special transport
documents.
In accordance with EC Directive 2006/66/EC, batteries must not be disposed of with domestic waste.
NOTE: Must not be used in explosion-hazard areas!
Devices used in explosion-hazard areas must be Ex approved and marked as such. This device
is not approved for use in explosion-hazard areas!
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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This document is the user manual for the following electromagnetic insertion flow meter: HydrINS
2/HydrINS 2 Mini in the configuration with or without displays.
For acquisition programming, refer to the HydrINS 2 / HydrINS 2 Mini flow meter programming
manual, or the programming manual for the data logger used.
For additional information, please contact us:
HYDREKA
34, route de Saint Romain – 69450 ST CYR AU MONT D’OR – France
Connected to a standalone recorder with a digital input channel
(records data on site): Lolog, Vista +
Connected to a standalone recorder with a digital input channel with
communications capability (records data remotely): Octopus LX
Connected to a Display, (possibility of a Pulse or 4-20 mA output to a
remote management system or data transfer via the GSM network).
2 Introduction
The HydrINS 2/ HydrINS 2 Mini electromagnetic insertion flow meter is intended to measure flow in
pipes carrying drinking water or raw water. The probe performs a velocity measurement and
calculates the flow rate by integrating the velocity over the flow cross-section.
ACS certification and WRAS-certified materials.
The measurement scale is from 2 cm/s to 5 m/s (0.787 inches to 16.4 feet) and the relative
measurement accuracy is +/-2% or +/-2 mm/s (0.0787 inches), where the error applied is the larger
of the two.
The HYDREKA range of electromagnetic insertion flow meters comprises the HydrINS 2, which comes
in five standard lengths (300, 500, 700, and 1000 mm) and the HydrINS 2 Mini, covering diameters
from 70 mm (2.75 in) to more than 2000 mm (78.74 in).
Flow meters are installed using a 1" BSP or NPT insert collar equipped with a ball valve (also possible
using a 3/4" BSP or NPT collar for the HydrINS 2 Mini).
HydrINS 2 and HydrINS 2 Mini electromagnetic insertion flow meters can operate in several different
configurations:
Two measurement positions are used for flow measurement:
The position at the centre of the pipe, which represents the maximum speed position
The position at one eighth of the diameter, which represents the mean speed position
The sensor of the HydrINS 2/HydrINS 2 Mini flow meter can be inserted in different positions across
the cross-section of the pipe. This allows a flow velocity profile to be created in order to refine the
mean speed calculation and therefore also the flow measurement. A set of default parameters is
available in the Winfluid software (refer to the HydrINS 2 / HydrINS 2 Mini Flow Meter Programming Manual).
All Catalogue Numbers for the products presented in this manual are listed in Appendix 3.
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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Probe head and guide bar
Insertion stem
Electrodes
Sensor
2.1 Measurement Principle
The velocity measurement principle is based on the application of Faraday's Law, which states that a
voltage is generated by the movement of a conductor through a magnetic field.
In the case of HydrINS 2/HydrINS 2 Mini, the magnetic field is generated by a coil at the end of the
probe, and the water passing through the pipe, whose conductivity must be at least 20 µS/cm,
represents the conductor.
The electromotive force generated by the passage of the water through the magnetic field,
comparable to a voltage, is measured by the two electrodes, which are visible on both sides of the
stem. Because this electromotive force is proportional to the velocity, the HydrINS 2/ HydrINS 2 Mini
probe carries out a velocity measurement derived from the electromotive force of the water. The
flow rate is then deduced from this velocity measurement.
The electromagnetic sensor is located at the tip of the insertion rod. It has an exciter coil and two
electrodes, seen on the side of the sensor.
Figure 1: Location of the sensor on the HydrINS2/HydrINS 2 Mini flow meter
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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Measured velocity Vm
Q = A × Fi × Fp × Vm
Where:
Q: flow rate
A: internal cross-section (calculated by Winfluid software from the inside diameter,
DI)
Fi: insertion factor (calculated by the Winfluid software)
Fp: profile factor (calculated by the Winfluid software)
The flow value is obtained via the following processing chain:
Figure 2: HydrINS 2/HydrINS 2 Mini data processing system
2.2 Environmental and safety conditions
Optimum use of the HydrINS 2 flow meter requires a suitable measurement environment in order to
avoid as far as possible any environmental disturbances that could affect the measurement.
Hydreka shall not be held liable for the quality of the measurements performed using the HydrINS 2 /
HydrINS 2 Mini flow meter if the recommendations given below are not observed.
2.3 Conditions in the measurement environment
Protection: IP 68 (NEMA 6):
HydrINS 2: 72 hours under 10 metres (32.8 feet)
Display units: 72 hours under 2 metres (6.56 feet)
Operating temperature range: -20°C (-4°F) to +60°C (140°F)
Storage temperature range: -20°C (-4°F) to +70°C (158°F)
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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: A danger arises during the physical installation of the
HydrINS 2/HydrINS 2 Mini probe. Because of the intrusive nature of
the procedure, the probe can be ejected if there is excessive
pressure inside the pipe. The probe is supplied with a safety chain,
which must be used. Ensure compliance with the installation
conditions (pumps shut off, wait for night-time conditions before
installing, etc.).
ENSURE THAT THE CHAIN IS OPERATIONAL BEFORE OPENING THE
INSERT VALVE
PROPERTY DAMAGE CAUSED BY EJECTION OF THE PROBE IS NOT
UNDER ANY CIRCUMSTANCES COVERED BY THE GUARANTEE
THE CONDUCTIVITY OF THE WATER PASSING THROUGH THE PIPE
MUST BE GREATER THAN 20µS/cm.
NOTE: It is essential to avoid sites where the pipes vibrate. If the
probe vibrates excessively after installation, the measurement will
not be correct. In this case, remove the probe.
2.4 Safety
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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Safety chain
Figure 3: Safety chain
The safety chain is also used to ensure that the probe is fully reinstalled after the flow meter has
been removed. It is connected to a hook that can pivot around the probe.
2.5 Product transport
The HydrINS 2 / HydrINS 2 Mini flow meters are delivered in an appropriate box with polystyrene
blocks to protect them during transport.
Figure 4: Typical packaging of the HydrINS2/HydrINS 2 Mini
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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The HydrINS 2 / HydrINS 2 Mini flow meter with plug
Guide bar, attached or bonded to the flow meter
This installation manual
The programming manual
Reinforced cases, called PELICASE, are also available for the transport of HydrINS 2 / HydrINS 2 Mini
300 to 700 models and their accessories:
Figure 5: Pelicase transport case
Your package, whether a box or a case, must contain:
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
Page 14 / 83
: ENSURE THAT THE GUIDE BAR IS IN THE PACKAGE. IT IS
ESSENTIAL FOR THE OPERATION OF THE HYDRINS 2 / HYDRINS 2 MINI.
IT IS CONNECTED TO THE FLOW METER
Figure 6: HydrINS 2 / HydrINS 2 Mini guide bar connected to the flow meter in the packaging
The HydrINS 2 / HydrINS 2 Mini flow meter is delivered with a protective plug. Please remove it
before installing the HydrINS 2 in the pipe.
Figure 7: Flow meter protection plug
2.6 Product guarantee
The HydrINS 2 / HydrINS 2 Mini has a three-year guarantee when used in accordance with the
conditions of use. Contact Hydreka Customer Service to invoke this guarantee if necessary.
2.7 Conditioning the product before use
The sensor of the HydrINS 2 / HydrINS 2 Mini flow meter must be soaked in water for one
day before use in order to obtain stable measurements.
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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Probe head with
orientation arrow
Alignment stem
Communication
port and pulse
output
Insertion marking
Clamp ring
Pressure output
Sensor
3 Description of the HydrINS2 / HydrINS 2 Mini product range
3.1 Mechanical description:
Figure 8: Mechanical description of the HydrINS 2 / HydrINS 2 Mini flow meter
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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100
(3.93)
29
(1.14)
55
(2.16)
215
(8.46)
130 (5.42)
Alignment stem
Watertight military
connector
Insertion marking
Clamp ring
Adapter
1" BSP/NPT
Chain mounting ring
Chain attachment and
adjustment hook
Safety chain
Reinforced ABS
housing
100
(3.93)
50
(1.97)
22
50
(1.97)
145
(5.7)
130 (5.42)
HydrINS 2
HydrINS 2 Mini
3/4" BSP/NPT
300 (11.8)
300 (11.8)
15 (0.59)
21 (0.83)
234
(9.21)
B
165
(6.5)
B
A*
A*
*A: dimension A is 689(27.12) for Cat. No.: SI_HYDA2P-30 / 869(34.2) for Cat. No. SI_HYDA2P-50 / 1109(43.66)
for SI_HYDA2P-70 / 1409(55.47) for SI_HYDA2P-100 / 500(19.68) for Cat. No. SI_HYDE2-15
Dimensions in mm (inches)
Figure 9: Drawing of HydrINS 2 and HydrINS 2 Mini probes
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
Page 17 / 83
HYDREKA
Catalogue
Number
Model
Hydrins
Dimension
A
mm
(inches)
Dimension
B
mm
(inches)
Dimension
C*
mm
(inches)
Available
insertion
length
= A-(B+C)
mm
(inches)
Usable on pipe
diameters
mm
(inches)
Profile
Centre
SI_HYDA2P-30
300
689
(27.12)
234
(9.21)
200
(7.87)
255
(10)
< 250
(9.84)
< 500
(19.68)
SI_HYDA2P-50
500
869
(34.21)
234
(9.21)
200
(7.87)
400
(15.75)
< 400
(15.75)
< 800
(31.5)
SI_HYDA2P-70
700
1109
(43.66)
234
(9.21)
200
(7.87)
675
(26.57)
< 650
(25.59)
< 1300
(51.18)
SI_HYDA2P-
100
1000
1409
(55.47)
234
(9.21)
200
(7.87)
975
(38.38)
< 950
(37.4)
< 1900
(74.8)
SI_HYDE2-15
Mini
500 (19.68)
165
(6.5)
200
(7.87)
175
(6.89)
< 180
(7.08)
< 300
(11.81)
3.2 Models in the HydrINS 2 / HydrINS 2 Mini flow meter range
The following table is a selection guide to identify the most appropriate HydrINS 2 model according
to the pipe diameter and dimensions as shown in the diagram above:
A: Total stem length (see the above diagram)
B: Stacking length of HydrINS 2/HydrINS 2 Mini accessories (see dimensions on the diagram
above)
C: Stacking height at insertion level (theoretical value, must be checked on site)
Table 7: Flow meter selection table according to the flow range to be measured
Note: This is a theoretical value. It is provided as an indication, but must be checked on site.
The model is also chosen according to the space available in the port. Allow sufficient distance above
the insertion point for installation in a port or valve chamber, known as the clearance height.
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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Model
Clearance height (mm) (in)
300
800 (31.5)
500
980 (38.6)
700
1220 (48)
1000
1520 (59.8)
Mini
610 (24)
Clearance height
The clearance heights are presented in the table below:
Table 7: Clearance heights above the insertion point required for installation of a HydrINS 2 / HydrINS 2 Mini flow meter.
Appendix 1 presents the HydrINS 2 / HydrINS 2 Mini flow meter models that can be used for several
standardised diameters.
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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DI
UPSTREAM STRAIGHT LENGTH: See Table 1
DOWNSTREAM
STRAIGHT LENGTH:
5×DI
DIRECTION OF FLOW
*DI: inside diameter of pipe
4 Installation location of the HydrINS 2 / HydrINS 2 Mini flow meter
4.1 Choice of installation location and installation and flow conditions
For accurate measurement of the flow, the pipe must be continuously carrying a flow, and
disturbance-free upstream and downstream distances ('straight lengths') must be observed. The
table below summarises the upstream distances to be observed according to the disturbing element.
Figure 10: Flow conditions to be observed
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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Disturbances
Upstream straight length to be observed (multiple of
the internal diameter DI)
Measurement to the
centre
Measurement to 1/8th
90° connection or elbow
25
50
Convergent cone (18 to 36°)
10
30
Divergent cone (14 to 28°)
25
55
Open gate valve
15
30
Open butterfly valve
25
45
Table 1: Upstream disturbance-free straight lengths to be observed
4.2 Velocity limits for measurement
Maximum velocities must be observed in order to prevent irreversible damage to the sensor. The
following charts show the maximum velocity applicable to the probe according to the chosen sensor
diameter and position. These values are provided as an indication. They are used when programming
the flow meter in Winfluid in the form of the maximum flow rate tolerated by the probe (refer to
the HydrINS 2 / HydrINS 2 Mini flow meter acquisition programming manual)
The flow rate is calculated based on a perfectly developed flow profile. Refer to the ISO 7145-1982
standard.
Figure 11: Maximum velocity for different pipe internal diameters
The creation of a velocity profile is used to refine the insertion factor and profile factor values (refer
to the HydrINS 2 / HydrINS 2 Mini flow meter acquisition programming manual). The order of
magnitude of the maximum velocities to be observed are indicated on the chart below.
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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Velocities not to be exceeded to achieve a velocity profile
Figure 12: Orders of magnitude of maximum velocities not to be exceeded to create a velocity profile
4.3 Choice of position for the electromagnetic sensor
Two precise positions are chosen for the electrodes in order to take a flow measurement:
At the centre of the pipe
At 1/8th of the pipe diameter
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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Position at 1/8 diameter
Position at 1/2 diameter
Figure 13: Valid positions of the HydrINS 2/HydrINS 2 Mini flow meter sensor for flow measurement
4.4 Typical installation of HydrINS 2 / HydrINS 2 Mini flow meters
Typical installations are as follows:
HydrINS 2: 1" insertion – drill 25 mm (0.98 inches) at least
HydrINS 2 Mini: two possibilities:
o Either 1" insertion plus 1"-3/4" adapter – drill 25 mm (0.98 inches) minimum: this
can measure the inside diameter of pipes using diameter gauges marketed by
HYDREKA and adaptable to 1" tappings.
o Or 3/4" insertion – drill 19 mm (0.75 inches) minimum: does not need an adapter.
The preparation of an insertion point compatible with HydrINS 2 or HydrINS 2 Mini is exactly the
same as for the preparation of a classic insertion point for the installation of a connection. No
additional accessories are required. After drilling the pipe, tighten the HydrINS 2 /HydrINS 2 Mini
probe to the ball valve.
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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Handle
Ring A
Ring B
1" thread
Stop of the
standardised length
4.5 Inside diameter measurement gauges
Before the probe is installed, measurements may be performed using an adaptable diameter gauge
on a 1" insertion thread. Their use requires the appropriate clearance above the pipe.
Figure 14: View of the different components of the diameter gauge
The diameter gauge has a bleed screw to evacuate the pressure. This is useful when excessive
pressure prevents the user from bringing the gauge down to the bottom of the pipe.
Figure 15: Gauge pressure evacuator
Note that a gauge can be created with a personalised size and thread (please ask us). Available gauge
models and their sizes are described in detail in Appendix 2.
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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5 Installation of the HydrINS 2 / HydrINS 2 Mini flow meter
5.1 Method for installation at the centre:
The method for installing the probe at the centre, described below, includes three stages:
1. Measuring the inside diameter DI using the gauge. If the inside diameter cannot be
measured using the gauge, refer to the standardised characteristics of the pipes according to
their nominal diameters and materials. See example in Appendix 1.
2. Measurement of insertion length LI
3. Installation of probes at the calculated insertion lengths.
, as defined below.
1/2
HydrINS 2 / HydrINS 2 Mini flow meter
Installation Manual
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Tighten the diameter gauge,
taking care to align the handle
with the pipe axis.
1. Open the insert valve and lower
the gauge until it stops against the
bottom of the pipe.
2. Lower the two identification
rings onto the gauge watertight
fitting.
3. Lock Ring A in this position using
the knurled screw.
1. Rotate the gauge through 180°.
2. Bring the gauge back up until it stops against
the upper surface of the pipe.
3. Position Ring B where it stops against the
watertight fitting of the gauge. Secure Ring B in
this position using the knurled screw
Measure the inside diameter
DI between the external faces
of the two rings.
DI
L
2 1 3
1
2
3
Ring A
Ring B
Freely
Immobilised
5.1.1 Step 1/3: Measuring the inside diameter DI using the gauge
It might not be possible to measure the DI (lack of space in the port or diameter too large). In that case, replace the DI value with an
estimate (e.g., manufacturer data).
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