kirchgaesser MIDEX-H Series User manual

ba023000en; Rev. 2.6
Operating
instructions
Flow meter
MIDEX
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II
MIDEX
Kirchgaesser Industrieelektronik GmbH
Kirchgaesser Industrieelektronik GmbH
Am Rosenbaum 6
D-40882 Ratingen (Homberg)
Tel.: [phone] / 955 - 6
Fax: [phone] / 955 - 720
www.kirchgaesser.com
[e-mail]

MIDEX
Kirchgaesser Industrieelektronik GmbH III
Table of contents
1. Introduction .........................................................................................................................4
1.1 Safety conventions............................................................................................................................................ 4
1.2 Using the instrument correctly........................................................................................................................... 4
1.3 Table of versions ............................................................................................................................................... 5
1.4 Certication ....................................................................................................................................................... 6
1.5 Measuring principle ........................................................................................................................................... 6
1.6 Measuring ranges.............................................................................................................................................. 7
1.7 Volume-nominalwidths-velocityofow......................................................................................................... 8
2. Installation ...........................................................................................................................9
3. Electrical connection........................................................................................................11
3.1 Terminal and pin assignment........................................................................................................................... 12
3.2 Terminals of temperature sensor MTF ............................................................................................................ 15
4. Controls .............................................................................................................................16
4.1 Controls of MIDEX........................................................................................................................................... 16
4.2 Function selection ........................................................................................................................................... 17
4.3 Menu 1: Display............................................................................................................................................... 19
4.4 Menu 2: Parameter.......................................................................................................................................... 21
4.5 Menu 3: In-/Outputs......................................................................................................................................... 25
4.6 Menu 4: Diagnosis........................................................................................................................................... 29
4.7 Menu 5: Hardware........................................................................................................................................... 32
4.8 Menu 6: Calibration ......................................................................................................................................... 35
4.9 Overview of default values .............................................................................................................................. 37
5. Display and output of measuring data............................................................................39
5.1 Normal operation............................................................................................................................................. 39
5.2 Overrange ....................................................................................................................................................... 39
5.3 Medium missing .............................................................................................................................................. 40
5.4 Error ................................................................................................................................................................ 40
5.5 EEPROM error ................................................................................................................................................ 41
5.6 Pulse output .................................................................................................................................................... 41
6. Dimension sheets .............................................................................................................42
7. Technical data ...................................................................................................................45

4
MIDEX
Kirchgaesser Industrieelektronik GmbH
Introduction
1. Introduction
1.1 Safety conventions
In order to highlight safety-relevant or alternate operation procedures in the manual
the following conventions have been used, each indicated by a corresponding icon in
the margin:
!A note highlights actions or procedures which, if not performed correctly,
mayindirectlya󰀨ectoperatingormayleadtoaninstrumentresponce
which is not planned.
"Caution indicates actions or procedures which, if not performed correctly,
may lead to personal injury or incorrect functioning of the instrument.
#A warning indicates actions or procedures which, if not performed cor-
rectly, will lead to personal injury, a safety hazard or destruction of the
instrument.
1.2 Using the instrument correctly
MIDEX-devices are manufactured according to the state of the art for operating
safety and comply with the relevant regulations. Improper use or use contrary to
specicationsmight,however,causedanger.
The manufacturer shall not be held liable for any damages arising from improper use
orfromusecontrarytospecication.
UnlessexpresslyprovidedforinthisOperatingManual,modicationsoralterationsof
the devices shall not be permitted.
Theowmeterisdesignedformeasuringtheowofelectricallyconductiveuidswith
a minimum conductivity of 5 µS / cm such as water, emulsions, sludges, slurries and
pastes. It operates without any wear and tear and dispenses without moving parts.
MIDEXisaowmeasuringdevicewhichallowsoptionalmeasuringoftwo
temperatures. Thus it can also be utilised for measuring refrigerating or heating
capacity.Anotheroptionisthetotalizingcountertodisplaythevolumewhichowed
through. This function is a special version.
TheMIDEXowmeterisaheavyduty,ameproofandcompactdeviceespecially
designed for mining applications, and complies with the harmonised European
standards EN 50014 (and EN 60079-0 resp.) and EN 50020 (and EN 60079-11 resp.)
as well as the European directive 2014/34/EU (ATEX).
It is available in the nominal widths from DN 50 to DN 300. The instruments are
available in the nominal pressure of PN 10 to PN 500. The enclosure is made of
stainless steel.
 Thetransportofthisdeviceisallowedonlywiththerightxingat
theange(e.g.byliftingeyebolts).Impropertransportcanlead
to irreparable damaging of this measuring instrument.

MIDEX
Kirchgaesser Industrieelektronik GmbH 5
Introduction
1.3 Table of versions
MIDEX - /
nominal pressure / bar
nominal width / mm
H vulcanite lining
M internal lining for building material, right for scraper
P plastic lining
S special lining
Fangedversion
H high pressure coupling
S special coupling
S without totalizing counter
T with totalizing counter
S standard version with 4 potential-free outputs
E extended version with 8 potential-free outputs
T version with temperature sensors and 8 potential-free
outputs
H Hydrostar socket type SKK 24-M
K connection via terminals
M Machaczek socket type ME2A10, ME2A60 or ME2A80
P1 PROMOS socket type BN4160, power supply and out-
put on one socket
P2 PROMOS socket type BN4160, separate voltage
supply via terminals, inputs and outputs are potential-
seperated
The standard measuring range of the optional used temperature sensors is adjusted
to 0 - 50 °C. It is freely programmable between -20°C and +60°C.
The standard length of the sensor is 100 mm. Other lengths are available on request.
The maximum cable lenght of the MTF is 30 m.

6
MIDEX
Kirchgaesser Industrieelektronik GmbH
Introduction
1.4 Certication
TheowmeterMIDEXcorrespondstotheharmonizedEuropeanstandards
EN 50014 (and EN 60079-0 resp.) and EN 50020 (and EN 60079-11 resp.) as soon
as the European directive 2014/34/EU (ATEX).
TheMIDEXisapprovedinallvariantswiththeECType-Examinationcerticateno.
DMT 02 ATEX E 115. It is marked with I M2 EEx ia I.
1.5 Measuring principle
Figure 1.1
Measuring principle Ue = B x L x v
Q = v x A
Ue = induced voltage
B = magneticinduction(magneticeld)
v = speed
Q = volumeofow
A = pipe cross-sectional area
L = distance between electrodes
TheMIDEXowmeterdeterminesthevolumeofowbasedonthemeasuredspeed
and the given pipe diameter.
The measuring method is based on Faraday’s Law of Induction (“A changing magnetic
eld about a conductor induces an electromotive force in this conductor”).
Anelectricallyconductivemediumowsinthetube,whereameasuringvoltageis
producedwhichisperpendiculartothedirectionofowandthemagneticinduction.
The level of the measuring voltage produced is proportional to the speed of the
measuring medium; it does not, however, depend on the conductivity of the medium.

MIDEX
Kirchgaesser Industrieelektronik GmbH 7
Introduction
1.6 Measuring ranges
Tab. 1.1
Measuring ranges
Measuringrange(ow)Q/(m3/h)
minimum standard maximum
DN50 0 - 10 0 - 30 0 - 50
DN65 0 - 10 0 - 30 0 - 80
DN80 0 - 20 0 - 50 0 - 100
DN100 0 - 50 0 - 100 0 - 200
DN125 0 - 60 0 - 150 0 - 300
DN150 0 - 70 0 - 200 0 - 500
DN200 0 - 150 0 - 400 0 - 1000
DN250 0 - 200 0 - 600 0 - 1500
DN300 0 - 300 0 - 800 0 - 2000
Measuringrange(ow)Q/(l/min)
minimum standard maximum
DN40 / PN500 0 - 100 0 - 250 0 - 500
DN60 / PN500 0 - 200 0 - 500 0 - 1000
Measuringrange(ow)Q/(gal/min)
minimum standard maximum
DN 50 0 - 50 0 - 150 0 - 300
Measuring range (refrigeration/heating capacity) W/(kW)
minimal Standard maximal
DN40 50 300 500
DN50 50 300 500
DN60 50 300 500
DN65 50 500 1000
DN80 100 800 1500
DN100 200 1000 2500
DN125 300 2000 3500
DN150 400 3000 5000
DN200 600 5000 10000
DN250 800 8000 15000
DN300 1000 10000 20000

8
MIDEX
Kirchgaesser Industrieelektronik GmbH
Introduction
1.7 Volume-nominalwidths-velocityofow
Figure 1.2
Q/v diagram
101
1
10
100
1000
0,2 0,5 2 5
2000
500
200
50
20
5
2
v/(m/s)
100
1000
500
200
50
20
Q/(l/min)
2000
Q/(m /h)
3
Q/(gal/min)
500
200
100
50
20
10
5
volumeow
averagevelocityofow
Example:
Avolumeowof56m3/hresultsfromanominalwidthofDN100andavelocityofow
of 2 m/s.

MIDEX
Kirchgaesser Industrieelektronik GmbH 9
Installation
2. Installation
TheMIDEXowmetercanbeinstalledinanyposition,regardlessofthedirectionof
ow.
Figure 2.1
Inlet and outlet runs
Inlet length: > 3 x DN Outlet length: > 2 x DN
> 3 x DN > 2 x DN
[DN = pipe diameter]
↑
Correct measurement is only possible with a full pipe. For this reason the following
locations are to be avoided:
• No installation at the highest point (air accumulation).
• No installation immediately before an open pipe outlet in a downward line.
• Locations exposed to strong vibration should be avoided.
• Do not mount at the lowest point (danger of solids accumulation).
Fig. 2.2
Mounting location
to be avoided
↑

10
MIDEX
Kirchgaesser Industrieelektronik GmbH
Installation
For this reason the following locations are suitable.
Fig. 2.3
Alternative location
↑
For inclines, a mounting similar to a drain should be planned. Please take notice of the
horizontalorientation(seegure2.5).
Fig. 2.4
Partially full pipes
> 3 x DN > 2 x DN
↑
The horizontal orientation of the measuring electrodes has to be observed in level or
angled mounting positions, the position of the electronics housing is helpful here.
Fig. 2.5
Horizontal orientation
Electrodes