IFM SM0504 Magnetic-inductive flow meter Operating Instructions
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IFM SM0504 is a magnetic-inductive flow sensor designed to monitor conductive liquids in various applications. Its key capabilities include:
- Detects process categories like volumetric flow and medium temperature.
- Suitable for conductive liquids with conductivity ≥ 20 µS/cm and viscosity < 70 mm2/s.
- Provides an analogue signal proportional to both volumetric flow and temperature.
- Configurable analogue start and end points for precise signal output.
- Supports flow rate and temperature monitoring with separate analogue outputs.
- Offers display of current process values and error indications.
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Operating instructions
Magnetic-inductive flow sensor
SM0504
UK
Contents
4�4 Volumetric flow or temperature monitoring / analogue function ��������������������5
5�3 Protection against high medium temperatures ����������������������������������������������8
9�2 Scaling of the analogue value for temperature ��������������������������������������������15
9�3 Scaling of the analogue value for volumetric flow ���������������������������������������15
9�4�1 Determine the standard unit of measurement for volumetric flow ������15
9�4�2 Determine the standard unit of measurement for temperature �����������15
9�4�3 Configuration of the standard display �������������������������������������������������15
9�4�4 Setting the damping of the measured values �������������������������������������15
9�4�5 Setting the error behaviour of OUT1 / OUT2 ��������������������������������������16
9�5�1 Reading the min�/max� values for volumetric flow ������������������������������16
9�5�2 Reading the min�/max� values for temperature �����������������������������������16
9�5�3 Reset all parameters to the factory setting �����������������������������������������16
2
10�2 Changing the display unit in the Run mode �����������������������������������������������17
UK
1 Preliminary note
1.1 Symbols used
► Instruction
> Reaction, result
[…] Designation of buttons, switches or indications
→ Cross-reference
Important note
Non-compliance can result in malfunctions or interference�
2 Safety instructions
• Please read this document prior to installing the unit� Ensure that the product is suitable for your application without any restrictions�
• Improper or non-intended use may lead to malfunctions of the unit or to unwanted effects in your application� That is why installation, electrical connection, set-up, operation and maintenance of the unit must be carried out by qualified personnel authorised by the plant operator�
• In all applications test the compatibility of the product materials (→ 12 Techni cal data) with the media to be measured�
3
3 Functions and features
The unit monitors liquids�
It detects the process categories volumetric flow and medium temperature�
Application area
Conductive liquids with the following properties:
• conductivity: ≥ 20 µS/cm
• viscosity: < 70 mm 2 /s at 40 °C (< 70 cSt at 104°F)�
4 Function
4.1 Processing of the measured signals
• The unit displays the current process values�
• It generates 2 output signals according to the parameter setting�
-OUT1: analogue signal for temperature�
-OUT2: analogue signal for volumetric flow�
4.2 Volumetric flow monitoring
The medium flows through a magnetic field� It generates a signal voltage which is directly proportional to the volumetric flow�
• An analogue signal proportional to the volumetric flow (4���20 mA) is provided on output 2. For the analogue functions → 4.4.
In addition to the flow velocity, the unit also detects the flow direction� The positive flow direction is marked on the unit by an arrow (“flow direction” → 5.2).
• Flow = “flow direction”: process value and display positive�
• Flow against the “flow direction”: process value and display negative�
Only positive process values are processed for the signal output��
4.3 Monitoring of temperatures
• An analogue signal proportional to the temperature (4���20 mA) is provided on output 1. For the analogue functions → 4.4.
4
4.4 Volumetric flow or temperature monitoring / analogue function
• The analogue start point [ASP] determines at which measured value the output signal is 4 mA�
• The analogue end point [AEP] determines at which measured value the output signal is 20 mA�
• Minimum distance between [ASP] and [AEP] = 20 % of the final value of the measuring range�
Example volumetric flow monitoring
UK
Factory setting Measuring range scaled
MEW = final value of the measuring range
In the set measuring range the output signal is between 4 and 20 mA�
It is also indicated:
Volumetric flow above the measuring range: output signal > 20 mA�
5 Installation
5.1 Installation location
► Install the unit so that the measuring pipe is always completely filled�
► Arrange for inlet and outlet pipe lengths� Disturbances caused by bends, valves, reductions, etc� are compensated for� It applies in particular: no shut-off and control devices are allowed directly in front of the unit�
5
S = disturbance; D = pipe diameter; F = flow direction
► Install in front of or in a rising pipe�
F = flow direction
► Avoid the following installation locations:
• Directly in front of a falling pipe�
• In a falling pipe�
F = flow direction
6
• At the highest point of the pipe system�
• Directly in front of the spout of a pipe�
F = flow direction
The unit can be installed independently of the orientation if the following is ensured:
-No air bubbles can form in the pipe system�
-The pipes are always completely filled�
• On the suction side of a pump�
UK
F = flow direction
If installed in an ungrounded pipe system (e�g� plastic pipes) the unit must be grounded�
Ground brackets for the G1 thread are available as accessories (order number E40198)�
A = cable lug (not included in the scope of supply)�
7
5.2 Installation in pipes
The unit is installed in the pipe using adapters� Adapters have to be ordered separately as accessories�
-Order no� E40179: 2 adapters for R½ pipes + 2 seals�
-Order no� E40180: 2 adapters for R¾ pipes + 2 seals��
-Order no� E40192: 2 adapters for ½“ pipes + 2 seals�
-Order no� E40193: 2 adapters for ¾“ pipes + 2 seals�
1� Screw the adapter (B) into the pipe (A)�
2� Place the seals (C) and install the unit according to the marked flow direction�
3� Screw the adapter (B) with the threads (D) until it is hand-tight�
4� Tighten the two adapters in opposite direction (tightening torque: 30 Nm)�
After installation air bubbles in the system can affect the measurement� Help:
► Rinse the system after installation for ventilation (rinsing quantity > 3 l/min� /
1 gpm)�
In cases of horizontal installation: As a result of design requirements a small quantity of the medium always remains in the measuring channel after switching off the pump�
5.3 Protection against high medium temperatures
For medium temperatures over 50 °C (122 °F) some parts of the housing can heat up to over 65 °C (140 °F)�
► Protect the housing against contact with flammable substances and unintentional contact�
8
6 Electrical connection
The unit must be connected by a qualified electrician�
The national and international regulations for the installation of electrical equipment must be adhered to�
Voltage supply to EN50178, SELV, PELV�
► Disconnect power�
► Connect the unit as follows:
2 1
3 4 OUT2
OUT1
1
2
4
3
L+
L
UK
Pin1
Pin3
Pin4 (OUT1)
Pin2 (OUT2)
Ub+
Ub-
Analogue signal for temperature�
Analogue signal for volumetric flow�
For information about available sockets/connectors see: www�ifm�com → Products → Accessories
9
7 Operating and display elements
1 to 8: Indicator LEDs
- LED 1 = current volumetric flow in litres/minute�
- LED 2 = current volumetric flow in cubic metres/hour�
- LED 3 = current volumetric flow in gallons per minute (gpm)�
- LED 4 = current volumetric flow in gallons per hour (gph)�
- LED 5 = current medium temperature in °C�
- LED 6 = current medium temperature in °F�
- LED 7, LED 8 = not used�
9: Alphanumeric display, 4 digits
- Indication of the current volumetric flow (if [SELd] = [FLOW] is set)�
- indication of the current medium temperature (if [SELd] = [TEMP] is set)�
- indication of the parameters and parameter values�
10: Mode/Enter pushbutton
- Selection of the parameters and acknowledgement of the parameter values�
11: Set pushbutton
- Setting of the parameter values (scrolling by holding pressed, incremental by pressing briefly)�
- Change of the display unit in the normal operating mode (Run mode)�
10
8 Menu
8.1 Menu structure
Run gpm
M
S gph
15s
S °C/°F
15s
S l/min
M
S m 3 /h
15s
S °C/°F
15s
S
M
S
M M
S
M
S
M M
S
M
M
S
M M
S
M
M
S
M M
S
M
M
S
M
S
M
M
S
M
M
S
M
M
S
M
M
S
M
M
S
M
M
S
M
M
S
= [Mode/Enter]
= [Set]
M M
In the Run mode, different display units are accessible (depending on the setting of the parameters [SELd], [Uni.F] and [Uni.T], → 10.2).
UK
11
8.2 Explanation of the menu
ASP1
AEP1
ASP2
AEP2
EF
Analogue start value for temperature�
Analogue end value for temperature�
Analogue start value for volumetric flow�
Analogue end value for volumetric flow�
Extended functions / opening of menu level 2�
HI�F Maximum value memory for volumetric flow�
LO�F Minimum value memory for volumetric flow�
HI�T Maximum value memory for temperature�
LO�T Minimum value memory for temperature�
FOU1 Behaviour of output 1 in case of an internal fault�
FOU2 Behaviour of output 2 in case of an internal fault� dAP Measured value damping / damping constant in seconds� diS Update rate and orientation of the display�
Uni�T Standard unit of measurement for temperature: °F or °C� res Restore factory setting�
12
9 Parameter setting
During parameter setting the unit remains in the operating mode� It continues its monitoring function with the existing parameters until the parameter setting has been completed�
9.1 General parameter setting
3 steps must be taken for each parameter set:
1 Parameter selection
► Press [Mode/Enter] until the requested parameter is displayed� UK
2 Setting of the parameter value
► Press [Set] and keep it pressed�
> Current setting value of the parameter flashes for 5 s�
> After 5 s: The setting value is changed: incremental by pressing briefly or scrolling by holding pressed�
Numerical values are incremented continuously� If the value is to be reduced: let the display move to the maximum setting value� Then the cycle starts again at the minimum setting value�
3 Acknowledgement of the parameter value
► Press [Mode/Enter] briefly�
> The parameter is displayed again�
The new setting value is stored�
Setting of other parameters:
► Start again with step 1�
Finishing the parameter setting:
► Press [Mode/Enter] several times until the current measured value is displayed or wait for 15 s�
> The unit returns to the operating mode�
13
• Change from menu level 1 to menu level 2:
► Press [Mode/Enter] until [EF] is displayed�
► Press [Set] briefly�
> The first parameter of the sub-menu is displayed (here: [HI�F])�
• Locking / unlocking
The unit can be locked electronically to prevent unintentional wrong settings�
► Make sure that the unit is in the normal operating mode�
► Press [Mode/Enter] + [Set] for 10 s�
> [Loc] is displayed�
During operation: > [Loc] is briefly displayed if you try to change parameter values�
► Press [Mode/Enter] + [Set] for 10 s�
> [uLoc] is displayed�
When delivered: unlocked�
• Time out:
If during parameter setting no pushbutton is pressed for 15 s, the unit exits the parameter setting mode� The parameter value is not changed�
For medium temperatures over 50 °C (122 °F) some parts of the housing can heat up to over 65 °C (140 °F)�
In this case do not press the pushbuttons manually; instead use an object�
14
9.2 Scaling of the analogue value for temperature
► Select [ASP1] and set the value at which 4 mA is provided�
► Select [AEP1] and set the value at which 20 mA is provided�
9.3 Scaling of the analogue value for volumetric flow
► Select [ASP2] and set the value at which 4 mA is provided�
► Select [AEP2] and set the value at which 20 mA is provided�
9.4 User settings (optional)
9.4.1 Determine the standard unit of measurement for volumetric flow
► Select [Uni�F] and set the unit of measurement::
[GPm], [GPh], [Lmin] or [m3h]�
9.4.2 Determine the standard unit of measurement for temperature
► Select [Uni�T] and set the unit of measurement: [°F] or [°C]�
9.4.3 Configuration of the standard display
► Select [SELd] and determine the standard process category�
-[FLOW] = display shows the current volumetric flow value in the standard unit of measurement�
-[TEMP] = display indicates the current medium temperature in the standard unit of measurement�
► Select [diS] and determine the update rate and orientation of the display:
-[d1] = update of the measured values every 50 ms�
-[d2] = update of the measured values every 200 ms�
-[d3] = update of the measured values every 600 ms�
-[rd1], [rd2], [rd3] = display as for d1, d2, d3; rotated by 180°�
-[OFF] = the display is switched off in the operating mode�
9.4.4 Setting the damping of the measured values
► Select [dAP] and the damping constant in seconds (t value 63 %)�
UK
15
9.4.5 Setting the error behaviour of OUT1 / OUT2
► Select [FOU1] and determine the value:
-[On] = the analogue signal goes to the upper end stop value�
-[OFF] = the analogue signal goes to the lower end stop value�
-[OU] = the analogue signal corresponds to the measured value�
► Select [FOU2] and determine the value:
-[On] = the analogue signal goes to the upper end stop value�
-[OFF] = the analogue signal goes to the lower end stop value�
-[OU] = the analogue signal corresponds to the measured value�
9.5 Service functions
9.5.1 Reading the min./max. values for volumetric flow
► Select [HI�F] or [LO�F] and press [Set] briefly�
[HI�F] = maximum value, [LO�F] = minimum value�
Delete memory:
► Select [HI�F] or [LO�F]�
► Press [Set] and keep it pressed until [----] is displayed�
► Press [Mode/Enter] briefly�
It makes sense to delete the memories as soon as the unit works under normal operating conditions for the first time�
9.5.2 Reading the min./max. values for temperature
► Select [HI�T] or [LO�T] and press [Set] briefly�
[HI�T] = maximum value, [LO�T] = minimum value�
Speicher löschen:
► Select [HI�T] or [LO�T]�
► Press [Set] and keep it pressed until [----] is displayed�
► Press [Mode/Enter] briefly�
It makes sense to delete the memories as soon as the unit works under normal operating conditions for the first time�
9.5.3 Reset all parameters to the factory setting
► Select [rES], then press [Set] and keep it pressed until [----] is displayed�
► Press [Mode/Enter] briefly�
The factory setting is listed at the end of the instructions (→ 13 Factory setting)�
It makes sense to write your own settings in this table before executing the function�
16
10 Operation
After power on and expiry of the power-on delay time (approx� 5 s) the unit is in the Run mode (= normal operating mode)� It carries out its measurement and evaluation functions and generates output signals according to the set parameters�
• Operation indication → chapter 7 Controls and indicating elements.
• The output signals are at the maximum value during the power-on delay time�
10.1 Read the set parameters
► Press [Mode/Enter] until the requested parameter is displayed�
► Press [Set] briefly�
> The unit displays the corresponding parameter value for approx� 15 s� After another 15 s the parameter is displayed again, then the unit returns to the Run mode�
UK
10.2 Changing the display unit in the Run mode
► Press [Set] briefly in the Run mode� Press the pushbutton to move to the next display unit�
> The unit displays the current measured value for approx� 15 s, the corresponding LED lights�
2 groups of display units are accessible (depending on the setting of the parameters [SELd] and [Uni�F] and [Uni�T]):
• [Lmin], [m3h] and the temperature unit selected in [Uni�T]�
• [GPm], [GPh] and the temperature unit selected in [Uni�T]�
When setting [SELd] = [FLOW], [Uni�F] = [Lmin] and [Uni�T] = [°C], for example,
[Lmin] is displayed as a standard� By pressing [Set] the display unit changes to
[m3h], [°C] and back to [lmin]�
10.3 Error indication
[OL] Detection zone of volumetric flow or temperature exceeded: measured value between 105,7 % and 114,5 % of VMR�
[UL] Below the detection zone of volumetric flow or temperature: measured value between -105,7 % and -114,5 % of VMR�
[Err] - Unit faulty / malfunction�
- Measured value greater than 114,5 % of VMR or smaller than -114,5 % of VMR�
[Loc] Setting pushbuttons locked, parameter change rejected�
VMR = final value of the measuring range
17
10.4 General operating conditions
► Avoid deposits, accumulated gas and air in the pipe system�
For medium temperatures over 50 °C (122 °F) some parts of the housing can heat up to over 65 °C (140 °F)�
► In this case do not touch the unit�
► Protect the housing against contact with flammable substances and unintentional contact�
► Do not press the pushbuttons manually; instead use an object�
11 Scale drawing
Dimensions are in millimeters
18
12 Technical data
Application ����������������������������������������������������������������������������������������������� conductive liquids
Conductivity �������������������������������������������������������������������������������������������������������� ≥ 20 µS/cm
Viscosity �����������������������������������������������������������������< 70 mm²/s at 40°C (< 70 cSt at 104°F)
Operating voltage [V] ������������������������������������������������������������������������������������������20���30 DC 1)
Current consumption [mA] ������������������������������������������������������������������������������������120 (24 V)
Analogue outputs������������������������������������������������������4���20 mA; measuring range scaleable
Max. load [Ω] �������������������������������������������������������������������������������������������������������������������500
Power-on delay time [s] �������������������������������������������������������������������������������������������������������5
Flow monitoring
Measuring range
Resolution
Display range gpm
0�10���30�00
0�05 gph
6���1800
2 l/min
0�2���113�6
0�1 m³/h
0�01���6�82
0�01
-31�70���31�70 -1902���1902 -120�0���120�0 -7�20���7�20
Response time [ms] ������������������������������������������������������������������������������������ < 150 (dAP = 0)
Damping flow signal (dAP) [s] ��������������������������������������������������������������������������������� 0�0���5�0
Accuracy ������������������������������������������������������������������������������������� < ± (2% MV + 0�5% VMR)
Repeatability [% VMR]���������������������������������������������������������������������������������������������������± 0�2
Pressure loss (dP) / flow rate (Q) dP [PSI]
11.60
10.15
8.70
7.25
5.80
4.35
2.90
1.45
0
5.3
10.6
15.8
21.1
26.4
31.7
Q [gpm]
UK
19
Temperature monitoring
Measuring range [°F / °C] �������������������������������������������������������������������������� -4���176 / -20���80
Resolution [°F / °C] ���������������������������������������������������������������������������������������������������0�5 / 0,2
Response time [s] ������������������������������������������������������������ T09 = 30 (Q > 1 l/min / 0�26 gpm)
Accuracy [°F / °C] ������������������������������������������������ ± 4,5 (Q > 0,26 gpm) / ± 2,5 (Q > 1 l/min)
Operating temperature [°F / °C] ���������������������������������������������������������������� 14���140 / -10���60
Medium temperature [°F / °C] ��������������������������������������������������������������������� 14���158 / -10���7
Pressure resistance [PSI / bar] ���������������������������������������������232 / 16Material (wetted parts) stainless steel (316S12); PEEK; FKM
Housing materials ������������������������������������������������������������������������� stainless steel (316S12);
PBT-GF 20; PC (Makrolon); EPDM/X (Santoprene)
Protection ��������������������������������������������������������������������������������������������������������������� IP 67 / III
Insulation resistance [MΩ] ������������������������������������������������������������������������ > 100 (500 V DC)
Shock resistance [g] �������������������������������������������������������������� 20 (DIN / IEC 68-2-27, 11ms)
Vibration resistance [g] �������������������������������������������������� 5 (DIN / IEC 68-2-6, 55 - 2000 Hz)
EMC
IEC 1000/4/2 ESD: ������������������������������������������������������������������������������������������������ 4 / 8 KV
IEC 1000/4/3 HF radiated: ����������������������������������������������������������������������������������������� 10 V/m
IEC 1000/4/4 Burst: �������������������������������������������������������������������������������������������������������2 KV
IEC 1000/4/5 Surge: ����������������������������������������������������������������������������������������������0�5 / 1 KV
IEC 1000/4/6 HF conducted: ����������������������������������������������������������������������������������������� 10 V
1) to EN50178, SELV, PELV
MV = measured value; VMR = final value of the measuring range
12.1 Setting ranges
FLOW
ASP2 gpm gph l/min m 3 h min
0�00
0
0�0
0�00
TEMP
°F
°C min
-4�0
-20�0
ASP1
(∆Q, ∆T = step increment) max
21�15
1268
80�0
4�80 max
140�0
60�0 min
5�30
318
20�0
1�20 min
32�0
0�0
AEP2
AEP1 max
30�00
1800
113�6
6�81 max
176�0
80�0
∆Q
0�05
2
0�1
0�01
∆T
0�5
0�2
20
dAP diS
Uni.F
Uni.T
SELd
ASP1
AEP1
ASP2
AEP2
FOU1
FOU2
13 Factory setting
Factory setting
-4.0
176.0
0.00
30.00
OFF
OFF
0.6
d2
GPm
°F
FLOW
Further information at www�ifm�com
User setting
UK
21
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Table of contents
- 3 1 Preliminary note
- 3 1�1 Symbols used
- 3 2 Safety instructions
- 4 3 Functions and features
- 4 4 Function
- 4 4�1 Processing of the measured signals
- 4 4�2 Volumetric flow monitoring
- 4 4�3 Monitoring of temperatures
- 5 4�4 Volumetric flow or temperature monitoring / analogue function
- 5 5 Installation
- 5 5�1 Installation location
- 8 5�2 Installation in pipes
- 8 5�3 Protection against high medium temperatures
- 9 6 Electrical connection
- 10 7 Operating and display elements
- 11 8 Menu
- 11 8�1 Menu structure
- 12 8�2 Explanation of the menu
- 13 9 Parameter setting
- 13 9�1 General parameter setting
- 15 9�2 Scaling of the analogue value for temperature
- 15 9�3 Scaling of the analogue value for volumetric flow
- 15 9�4 User settings (optional)
- 15 9�4�1 Determine the standard unit of measurement for volumetric flow
- 15 9�4�2 Determine the standard unit of measurement for temperature
- 15 9�4�3 Configuration of the standard display
- 15 9�4�4 Setting the damping of the measured values
- 16 9�4�5 Setting the error behaviour of OUT1 / OUT
- 16 9�5 Service functions
- 16 9�5�1 Reading the min�/max� values for volumetric flow
- 16 9�5�2 Reading the min�/max� values for temperature
- 16 9�5�3 Reset all parameters to the factory setting