Dinel MLM-35 User manual

Before the rst use of the level meter , read the instructions in this manual and keep it
carefully. The manufacturer reserves the right to make alterations without a prior notice.
Hydrostatic level meters Hlm-35Hydrostatic level meters Hlm-35
INSTRUCTION MANUAL

1 . Basic description ................................................................................................................4
2 . Range of application ..........................................................................................................4
3 . Variants of sensors ............................................................................................................5
4 . Dimensional drawing ........................................................................................................5
5 . Installation and putting into operation ..........................................................................6
6 . Mechanical mounting .......................................................................................................7
7 . Electrical connection .........................................................................................................7
8 . Setting the measuring range with a magnetic pen ........................................................ 9
9 . Function and status indication .........................................................................................9
10 . Connection examples .................................................................................................... 10
11 . User-adjustable measuring ranges .............................................................................12
12 . Examples of markings for a variant with user settings .............................................12
13 . Order code .......................................................................................................................13
14 . Correct specication examples .................................................................................... 14
15 . Accessories ......................................................................................................................14
16 . Safety, protections and compatibility .........................................................................14
17 . Use, manipulation and maintenance...........................................................................15
18 . General conditions and warranty ................................................................................15
19 . Marking of labels ...........................................................................................................15
20. Technical specications .................................................................................................16
21 . Packaging, shipping and storage ..................................................................................17
Contents

HLM–35 © Dinel, s.r.o.
4
The hydrostatic level meter HLM–35 is a compact measuring device containing a ceramic
or stainless steel strain gauge sensor and evaluation electronics in a stainless steel probe.
The ceramic sensor is resistant to dierent against various liquids (water, oil, coolants, water
solutions, etc.). The probe is produced in a conguration with a valve or a capillary, which
serves to deliver atmospheric pressure to the probe. The front side of the probe is open,
which makes the level meter more resistant against adhesion of coarser soiling. The level
meter does not include any elements that can be set. LED signal function.
1 . Basic description
All the operations described in these operating instructions must be made only
by trained personnel or by an authorised person. Warranty and post-warranty
repairs must be carried out exclusively at the manufacturer. Incorrect sensor
use, assembly or conguration may cause accidents in the application (tank
overlling or damage to the system components).
The manufacturer is not responsible for the improper use, working losses in-
curred by either direct or indirect damage and the expenditure incurred during
the installation or the use of the sensor.
In order to ensure maximum safety of control processes, we have dened the following safety and
information instructions. Each instruction is marked with a corresponding pictogram.
Caution, warning, danger
This symbol informs about particularly important instructions for the installation and
operation of the device or dangerous situations that may occur during installation and
operation. Ignoring these instructions may be the cause of the fault, damage to or de-
struction of the device or may cause damage to health.
Information
This symbol indicates particularly important device characteristics and recommenda-
tions.
Note
This symbol indicates the useful additional information.
symBols used
safety
2 . range of application
For continuous level measurement of clean, lightly soiled or turbid water in non-pressure
vessels. Further for various liquids (oil, coolants, etc.). If the level meter is used on a liquid
other than water, it is necessary to make correction of output current (resp. voltage) accord-
ing to the density of measured liquid. We recommend consulting the suitability of the level
meter for measuring other liquids, than H2O with the manufacturer.

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© Dinel, s.r.o. HLM–35
3 . Variants of sensors
• HLM–35N-CV measuring range 1 ... 100 m H2O, arbitrary standard measuring range (can
be custom set in 10 cm increments). In case of the variant with an option of
settings with a magnetic pen, the range is user-adjustable within the selected
measuring range. Current (4 ... 20 mA) or voltage (0 ... 10 V) output. Sensor
with ceramic converter membrane. Pressure equalisation via a valve.
• HLM–35N-CK measuring range 1 ... 100 m H2O, arbitrary standard measuring range
(can be custom set in 10 cm increments). In case of the variant with an op-
tion of settings with a magnetic pen, the range is user-adjustable within the
selected measuring range. Current (4 ... 20 mA) or voltage (0 ... 10 V) output
Sensor with ceramic converter membrane. Pressure equalisation via a
capillary.
• HLM–35N-SV measuring range 1 ... 100 m H2O, arbitrary standard measuring range (can
be custom set in 10 cm increments). In case of the variant with an option of
settings with a magnetic pen, the range is user-adjustable within the selected
measuring range. Current (4 ... 20 mA) or voltage (0 ... 10 V) output. Sensor
with stainless steel converter membrane. Pressureequalisationviaa valve.
• HLM–35N-SK measuring range 1 ... 100 m H2O, arbitrary standard measuring range
(can be custom set in 10 cm increments). In case of the variant with an
option of settings with a magnetic pen, the range is user-adjustable within
the selected measuring range. Current (4 ... 20 mA) or voltage (0 ... 10 V)
output. Sensor with stainless steel converter membrane. Pressure equali-
sation via a capillary.
4 . dimensional drawing
* According to el. connection type
Types of threads:
G 3/4''; M27x2
Types of threads:
G 3/4''; M27x2
HLM–35N-C_ HLM–35N-S_

HLM–35 © Dinel, s.r.o.
6
Variant "H" with terminal for protected
hoses – for use in outdoor environments or
in areas with increased moisture.
Variant "V" with plastic terminal with
spiral relief – in case of increased
mechanical strain on the cable.
(63)
Note. Values in brackets apply for version with the capillary (CK and SK)
5 . Installation and putting into operation
This procedure has the following three steps:
• Mechanical mounting - see Chapter 6
• Electrical connection - see Chapter 7
• Settings - see Chapter 8
Variant "A" with short
stainless steel terminal Variant "B" with plastic threaded terminal Variant "C" with connector M12
(27)
Spiral relief
protective hose
(ø 13 mm)

7
© Dinel, s.r.o. HLM–35
6 . mechanical mounting
• Installation by screwing into the wall of the vessel of the measured area.
• When using the cable containing the equalising capillary, it is necessary to use a non-
hermetic connection box for connection to connecting cables.
• For CK and SK type level meter, when winding up excess cable into rolls, a diameter of
min. 30 cm must be maintained. We do not recommend shortening or otherwise me-
chanically adjusting the cable.
• In tanks, where swirling of the liquids occurs as a result of strong inow or mixing, it is
necessary to place the probe in a stilling pipe, behind a partition or at least as faw away
as possible from the source of the swirling.
• When using it for liquids other than water, it is necessary to make a correction to the
output voltage respecting the density of the measured liquid, and if necessary consult
the application with the manufacturer.
7 . electrical connection
Electrical connection can only be made in a voltage-free state!
In the event that the level meter is tted with a shielded cable, it is necessary to ground
the cable on the side of the power source for the event of a possible lightning electrical
discharge in the vicinity of the sensor.
In the event that the level meter is installed in an outdoor environment at a distance
greater than 20 m from the outdoor switchboard, or from an enclosed building, it is
necessary to supplement the electrical cable leading to the level meter with suitable
overvoltage protection.
In case of strong ambient electromagnetic interference, paralleling of conductors with
power distribution, or for distribution to distances over 30m, we recommend using a
shielded cable and its grounding on the side of the power source.
Level meters HLM-35 with a type A, B, V or H cable terminal, are connected to the assess-
ment units permanently by a connection cable, see pg. 2.
Level meters HLM-35 with connection method type C (see pg. 2) are connected to assess-
ing units by means of a connector socket with a press-in cable, or by means of a detach-
able connector socket without a cable (see accessories), the connector is not part of the
sensor. In this case the cable is connected to the inside pins of the socket according to the
gure below.
Inside view of the connector
socket (variant "C")
Uout (BK)
0 V (BU)
+U (BR)

HLM–35 © Dinel, s.r.o.
8
In case of use cable with capillary connect the positive pole (+U) of the power supply
to the red wire RD, or connector pin no. 1, the negative pole (0 V) to the blue wire BU, or
connector pin no. 3, and the output voltage (Uout) to the black wire BK, or connector pin no.
4. Connection diagrams are provided in the gures below.
In case of use cable without capillary connect the positive pole (+U) of the power supply
to the brown wire BR, or connector pin no. 1, the negative pole (0 V) to the blue wire BU, or
connector pin no. 3, and the output voltage (Uout) to the black wire BK, or connector pin no.
4. Connection diagrams are provided in the gures below.
(X) – Connector terminal numbers
Cable wire colours with
a pressed connector:
BR – brown
BU – blue
Cable wire colours
with capillary:
RD – red
BU – blue
---- – shielding
0 V (3)
+U (1)
Level meter connection with current output
BR (1)
RD
BU (3)
Uout (4)
0 V (3)
+U (1)
Level meter connection with current output
(X) – Connector terminal numbers
Cable wire colours with
a pressed connector:
BR – brown
BK – black
BU – blue
Cable wire colours
with capillary:
RD – red
BU – blue
BK – black
---- – shielding
BR (1)
RD
BK (4)
BU (3)

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© Dinel, s.r.o. HLM–35
9 . function and status indication
8 . nastaVení měřicího rozsahu pomocí magnetického pera
(Verze hlm–35n–_–_–_–_–m)
The measuring range is set by touching sen-
sitive spots “–” and “+” with the magnetic
pen. The sensitive spot “–” is used to enter
the setting mode to set the limit of 4 mA
(0 V) and reduce the current (voltage) to be
set. After reaching the required current (volt-
age), wait for steady orange LED light and,
then, touch the sensitive spot “–” with the
magnetic pen to conrm the set value.
The sensitive spot “+” is used to enter
the setting mode to set the limit of 20 mA
(10 V) and increase the current (voltage) to
be set. After reaching the required current
(voltage), wait for steady orange LED light
and, then, touch the sensitive spot “+” with
the magnetic pen to conrm the set value.
The setting progress is indicated by the or-
ange “STATE” indicator. The correct level
measurement function is indicated by the
green “RUN” indicator.
Cable gland
or connector
Top view of the level meter
Orange LED Valve
Sensitive spot + Sensitive
spot -
Green LED
Indicator Colour Function
"RUN" Green
Measuring function indication
Flashing – (repeats in approx. 0.5 s according to measurement period)
– proper level measurement function
Dark – incorrect installation or malfunction. In addition, the LED indica-
tor is dark in the limit setting mode.
Alternating ashing of green and orange LEDs – incorrectly set
limits
"STATE" Orange
Settings indication
Slow ashing – 4 mA (0 V) limit setting signalling
Fast ashing – 20 mA (10 V) limit setting signalling
Permanent shine – the level meter is ready to conrm the limit setting
using the magnetic pen
3 short ashes – conrmation of the settings
The simultaneous shine of green and orange LEDs – when touching
the magnetic pen to conrm
the limit setting

HLM–35 © Dinel, s.r.o.
10
10 . connection examples
connection of Level meter HLM-35-C-U with voltage output to the unit
PDU-4xx-P (output 0 ... 10 V) using junction box NB
In the case using a connection box with integrated overvoltage protection, the sensor
needs to be connected to the bottom series of terminals. This series of contacts is marked
by label SENSOR.
cable shield
cable shield
internally connected
connection of Level meter HLM-35-C-I with current output to the unit
PDU-4xx-P (output 4 ... 20 mA) using junction box NB
In the case using a connection box with integrated overvoltage protection, the sensor
needs to be connected to the bottom series of terminals. This series of contacts is marked
by label SENSOR.
cable shield
cable shield
internally connected
connection of Level meter HLM-35-C-I with current output to the unit
PDU-4xx-W (output 4 ... 20 mA) using junction box NB
cable shield
cable shield
internally connected
In the case using a connection box with integrated overvoltage protection, the sensor
needs to be connected to the bottom series of terminals. This series of contacts is marked
by label SENSOR.

11
© Dinel, s.r.o. HLM–35
Legend:
BR - brown (capillary-free cable)
RD – red (cable with capillary)
BU – blue
BK – black
– cable shield
connection of Level meter HLM-35-C-U with voltage output to the unit
PDU-4xx-W (output 0 ... 10 V) using junction box NB
In the case using a connection box with integrated overvoltage protection, the sensor
needs to be connected to the bottom series of terminals. This series of contacts is marked
by label SENSOR.
cable shield
cable shield
internally connected
Connection of level meter HLM-35 with current output to the PCU-100
(RD (+U)(1))
(BK (0V)(3))
Legend:
RD – red
BK – black
---- – cable shield
(1...) – connector terminal numbers
Here is the connection of the PCU-100 -_- I unit with the HLM-35N -_- I level meter.

HLM–35 © Dinel, s.r.o.
12
12 . examples of markings for a Variant with user settings
11 . user-adjustaBle measuring ranges
For the variants of sensors with the possibility of user settings, it is possible to choose from
the ranges shown in the following table.
The above table denes the setting variances for each range for both stainless steel and ce-
ramic transducers. The level meters with a broad range are not recommended to be used to
measure low levels. Such usage of the sensor brings a more signicant measurement error
into the measuring system.
HLM–35N-CV-G3/4–I–A–M–0100 kabel 3m
(N) non-explosive areas; (CV) ceramic membrane of the sensor, pressure compensation via
semi-permeable valve; (G3/4) pipe thread G ¾; (I) current (4 ... 20 mA); (A) stainless steel
cable gland for CV and SV; (M) Settings using the magnetic pen, (0100) measuring range 10,
the maximum output current can be set in the range of 5 to 10 m see table User-adjustable
measuring ranges.
HLM–35N-SK-M27–I–B–M–0070 kabel 10m
(N) non-explosive areas; (SK) stainless steel membrane of the sensor, pressure compensa-
tion by capillary; (M27) metric thread M 27x2; (I) current (4 ... 20 mA); (B) plastic threaded
cable gland, for CV, CK, SV and SK; (M) Settings using the magnetic pen, (0070) measuring
range 7 m, the maximum output current can be set in the range of 3,5 to 7 m, see table User-
adjustable measuring ranges.
User-adjustable measuring ranges for the M variant
Stainless steel diaphragm Ceramic diaphragm
Measuring range Adjustable range
of the water column [dm] Measuring range Adjustable range
of the water column [dm]
0010 0–10 0050 0–50
0035 10–35 0100 50–100
0070 35–70 0200 100–200
0100 70–100 0500 200–500
0250 100–250 1,000 500–1,000
0400 250–400 - -
0600 400–600 - -
1,000 600–1,000 - -

13
© Dinel, s.r.o. HLM–35
13 . order code
PRODUCT
HLM-35
PERFORMANCE
Nnon-explosive areas
TYPE OF MEMBRANE
CV ceramic membrane of the sensor, pressure compensation via semi-permeable valve
CK ceramic membrane of the sensor, pressure compensation by capillary
SV stainless steel membrane of the sensor, pressure compensation via a semi-permeable valve
SK stainless steel membrane of the sensor, pressure compensation by capillary
PROCESS CONNECTION
G¾ pipe thread G ¾
M27 metric thread M 27x2
TYPE OF OUTPUT
Icurrent (4 ... 20 mA)
Uvoltage (0 ... 10 V)
CONNECTION METHOD
Astainless steel cable gland for CV and SV
Bplastic threaded cable gland, for CV, CK, SV and SK
Cconnector (socket not included with sensor, recommended type -
see accessories.) for CV and SV
Vplastic cable gland with spiral relief for CV, CK,SV and SK
Hplastic cable gland for protective hose for CV and SV
SET-UP ELEMENTS
MSettings using the magnetic pen
LWithout set-up elements; this cannot be used with the
SV and SK type diaphragm
MEASURING RANGE
0010 ... 1000 1 ... 100 m with a step of 1 dm
(see the table above)
CABLE
Kcable length in m
HLM-35 N - CV - M27 - I - A - M- 0035 K 2 EXAMPLE OF
CODING
1) factory setting to the required range, according to the order code (measuring range).

HLM–35 © Dinel, s.r.o.
14
optional – for a surcharge (see catalogue sheet of accessories)
• cable (over the standard length 2 m)
• connector socket (type ELWIKA or ELKA)
• non-hermetic connection box NB
• standard steel or stainless steel welding ange
• protective hose (for type of cable outlet H)
• stainless steel xing nut
• various types of seals (PTFE, Al, etc.)
15 . Accessories
16 . Safety, protections and compatibility
Level meter HLM–35 is equipped with protection against voltage polarity reversal, protection
against current overload and protection against short term overvoltage.
Protection against dangerous contact is provided by low safety voltage according to 33 2000-
4-41.
Electromagnetic compatibility is provided by conformity with standards EN 55011/B, EN 61326-
1, EN 61000-4-2, -4-3, -4-4, -4-5 and -4-6.
14 . correct specification examples
HLM–35N-CV-G3/4–I–A–M–0010 K 3
(N) provedení do normálních prostor; (CV) keramická membrána měniče s vyrovnávačem
tlaku; (G¾) procesní připojení závitem G¾“; (I) proudový výstup 4...20 mA; (A) nerezová
vývodka; (M) nastavení pomocí magnetického pera; rozsah 1 m; kabel 3 m.
HLM–35N-CK-M27–U–A–L–0500 K 52
(N) provedení do normálních prostor; (CK) keramická membrána měniče s kapilárou;
(M27) procesní připojení závitem M27; (U) napěťový výstup 0...10 V; (A) nerezová vývodka;
(L) bez nastavovacích prvků; rozsah 50 m; kabel 52 m.

15
© Dinel, s.r.o. HLM–35
Labels for device of the type HLM–35_-__-___-I-_-_-____:
19 . Marking of labels
IP68
0 V
+U
RD
BU I = 4 .. . 20 mA
U = 12 ... 34 V
t = -20 ... +70 °C
a
No.: ______
Dinel
www.dinel.cz
Made in Cz ech R epu blic
Délka 112 mm - výška 12 mm
Štítek pro varianty HLM-35N-_K-___-I-B-_-____
pp
HLM -3 5N-_ K-__ _-I- B -_-_ ___ Cabl e:__ m
Size of labels 112 x 12 mm, the size shown does not correspond to reality.
• Symbol of producer: logo Dinel®
• Internet address: www.dinel.cz
• Country of origin: Made in Czech Republic
• Connection diagram and wire designation: + U, 0 V
• Level meter type: HLM–35_-__-___-I-_-_-____
• Length of cable: _ _ m
• Serial number: Ser. No.: _____ _ – (from the left: production year, serial production number)
• Supply voltage: U = 12 ... 34 V=
• Output current range: I = 4 ... 20 mA
• Ambient temperature range: ta = --20 ... +70 °C
• Protection class: IP6_ (see Coverage according to electrical connection)
• Compliance mark:
• Electro-waste take-back system mark:
The level meter does not require any operation for operation. The maintenance of the device
consists in checking the integrity of the sensor and the supply cable.
17 . Use, manipulation and maintenance
It is forbidden to make any changes or interventions on the HLM-35 level meter without
the consent of the manufacturer. Any repairs must only be carried out by the manu-
facturer or a service organization authorized by him.
The assembly, installation, commissioning, operation and maintenance of the HLM-35
level meter must be carried out in accordance with these instructions and the provi-
sions of the applicable standards for the installation of electrical equipment must be
observed.
18 . General conditions and warranty
Dinel, s.r.o. guarantees for the period of three (3) years that the product has the characteristics as
mentioned in the technical specication.
Dinel, s.r.o. is liable for defects ascertained within the warranty period and were claimed in writing.
This guarantee does not cover the damages resulting from misuse, improper installation or incorrect
maintenance.
This guarantee ceases when the user or the other person makes any changes on the product or the
product is mechanically or chemically damaged, or the serial number is not readable.
The warranty certicate must be presented to exercise a claim.
In the case of a rightful complaint, we will replace the product or its defective part. In both cases, the
warranty period is extended by the period of repair.

HLM–35 © Dinel, s.r.o.
16
20. Technical specifications
Used materials
Sensor part Variants Standard material
Housing All types stainless steel W.Nr. 1.4404 (AISI 316L)
End of sensor All types stainless steel W.Nr. 1.4301 (AISI 304)
Membrane HLM–35_–C_- _- _-_-_- _ _ _ _
HLM–35_–S_- _- _-_-_- _ _ _ _
ceramic Al2O396%
stainless steel 1.4404
Gasket O-rings All types FPM (Viton)
Cable terminal
HLM–35_–_ _- _- _-A- _- _ _ _ _
HLM–35_–_ _- _- _-B-_- _ _ _ _
HLM–35_–_ _- _- _-V-_- _ _ _ _
HLM–35_–_ _- _- _-H-_- _ _ _ _
stainless steel W.Nr. 1.4301 (AISI 304)
plastic PA / NBR
plastic PA / NBR
plastic PA / NBR
Connector M12 HLM–35_–_ _- _- _-C-_- _ _ _ _ nickel-plated brass
Technical specifications
performance non-explosive areas
Supply voltage HLM–35_–_ _- _- I-_-_- _ _ _ _
HLM–35_–_ _- _- U-_-_- _ _ _ _
12 ... 34 V DC
12 ... 34 V DC
Current output
Voltage output
HLM–35_–_ _- _- I-_-_- _ _ _ _
HLM–35_–_ _- _- U-_- _- _ _ _ _
4 ... 20 mA
0 ... 10 V
Consumption
(eg no-load output) HLM–35_–_ _- _- U-_-_- _ _ _ _ max. 8 mA
Permissible overload 1,5x range
Basic accuracy (nonlinearity, hysteresis, repeatability) 0.5% of range
(adjustable variant 0.2%)
Long-term stability 0,3 % / year
Temperature error for zero and range in the range 0 ... + 50 ° C max. 0,04% / K
Temperature compensation range 0 ... +50°C
Operating temperature range (medium temperature) -20 ... +70°C
Max. load resistance of current output (at U = 24 V DC) Rmax= 600 Ω
Min. load resistance of voltage output Rmin= 5 kΩ
Protection class typ HLM–35_–_ _- _- _- C- _- _ _ _ _
typ HLM–35_– _- _- _-(A,B,V,H)- _- _ _ _ _
IP67
IP68
Cable
typ HLM–35_–_ V- _- I- _- _- _ _ _ _
typ HLM–35_–_ V- _- U- _- _- _ _ _ _
typ HLM–35_–_ K- _- I- _- _- _ _ _ _
typ HLM–35_–_ K- _- U- _- _- _ _ _ _
PVC 2 x 0,75 mm2
PVC 3 x 0,5 mm2
PE 2 x 0,25 mm2 with capillary
PE 3 x 0,25 mm2 with capillary
Weight sensor
cable (1 m)
190 g
60 g

17
© Dinel, s.r.o. HLM–35
21. Packaging, shipping and storage
The device HLM-35 is packaged in a polyethylene bag, and the entire consignment is placed into
a cardboard box. A suitable ller material is used in the cardboard box to prevent mechanical damage
during transport.
Remove the device from the packaging only just before using, thereby protecting it from potential damage.
A forwarding company will be used to ship goods to the customer. Upon prior agreement, ordered
goods can be picked up in person at company headquarters. When receiving, please check to see
that the consignment is complete and matches the order, or to see if any damage has occurred to
the packaging and device during transport. Do not use a device clearly damaged during transport,
but rather contact the manufacturer in order to resolve the situation.
If the device is to be further shipped, it must be wrapped in its original packaging and protected
against impact and weather conditions.
Store the device in its original packaging in dry areas covered from weather conditions, with humidity
of up to 85 % without e󰀨ects of chemically active substances. The storage temperature range is
-20 °C až +70 °C.
Process connection
type dimensions marking
Pipe thread G ¾'' G ¾
Metric thread M27x2 M27

HLM–35 © Dinel, s.r.o.
18
Notes

Dinel, s.r.o.
UTescomy 249
76001 Zlín
Česká republika
Tel.: +420 577002002
E-mail: [email protected]
www.dinel.cz
Aktuální verzi návodu naleznete na www.dinel.cz
verze: 2017
05/2020