Sontex Supercal 531 User manual

Manual
Integrator
Supercal
531
Issue:
Document:
Manufacturer:
Techni
cal modifications subject to change
Integrator
Supercal
Rev. 060611
Manual Integrator Supercal 531 06
Sontex SA
2605 Sonceboz, Sw
itzerland
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Internet: www.sontex.ch
cal modifications subject to change
Manual Integrator Supercal 531 06
-06-2011
itzerland

Manual Integrator Supercal 531 06-06-2011 2
Revision
Issue
Dat
e
Aut
h
or
Description of Modification
030909 03.09.09 MS Data copied, layout adapted
151009 15.10.09 EXT English Translation
121109 12.11.09 MS Completely reviewed
230410 23.04.10 SV Remove cooling energy chap. 3.6.3
060611 06.06.11 SV Modify Voltage tolerance for 24 VAC chap. 11.2.1

Manual Integrator Supercal 531 06-06-2011 3
Table of Contents
1. Introduction...........................................................................................6
1.1 Brief description ..........................................................................................................6
1.2 Advantages of the Supercal 531.................................................................................6
2. Concept of the Heat Meter....................................................................7
2.1 Measuring concept......................................................................................................7
2.2 Integrator.....................................................................................................................7
2.3 Flow sensors...............................................................................................................7
2.4 Temperature sensor....................................................................................................8
2.4.1 2-Wire-cable sensor...............................................................................................................8
2.4.2 4-wire-cable sensor................................................................................................................9
2.4.3 Installation guideline of temperature sensor acc. to EN1434................................................10
2.5 Installation guidelines................................................................................................11
3. The Integrator Supercal 531...............................................................12
3.1 The modular concept ................................................................................................12
3.1.1 Integrator upper part.............................................................................................................12
3.1.2 Integrator base part..............................................................................................................13
3.2 Wiring diagram..........................................................................................................14
3.3 Flow measurement....................................................................................................14
3.4 Calculation of flow.....................................................................................................15
3.4.1 Calculation of the flow rate with standard flow sensors.........................................................15
3.4.2 Calculation of the flow with fast flow sensors........................................................................15
3.5 Temperature measurement.......................................................................................15
3.5.1 General................................................................................................................................15
3.5.2 Tolerated errors and limit values ..........................................................................................16
3.6 Energy metering........................................................................................................16
3.6.1 Error limits............................................................................................................................16
3.6.2 Cooling energy.....................................................................................................................16
3.6.3 Cooling energy – combined cold-/heat meter .......................................................................17
3.6.4 Insulation instruction for cooling systems .............................................................................17
3.7 Calibration- and measuring-relevant data.................................................................17
3.8 Possible parameterisations.......................................................................................18
4. Data Storage........................................................................................19
4.1 Data storage over EEPROM.....................................................................................19
4.2 Data storage with backup-batteries in the mains modules........................................20
5. Operational Concept...........................................................................22
5.1 The structure of the LCD-display...............................................................................22
5.2 The display menu......................................................................................................23
5.3 The operator buttons.................................................................................................24
6. The Communication Concept ............................................................25
6.1 Standard configuration..............................................................................................25
6.1.1 Optical interface...................................................................................................................25

Manual Integrator Supercal 531 06-06-2011 4
6.1.2 Pulse input for volume measurement...................................................................................26
6.1.3 Two additional pulse inputs..................................................................................................26
6.1.4 Two open-collector pulse outputs.........................................................................................26
6.1.5 M-bus communication..........................................................................................................26
6.1.6 Timing of M-Bus communication ..........................................................................................27
6.2 Optional communication modules.............................................................................28
6.2.1 Analogue module with two outputs.......................................................................................28
6.2.2 Relay module.......................................................................................................................29
6.2.3 Module RS-232 with two relay outputs.................................................................................30
6.2.4 Module RS-232....................................................................................................................30
6.2.5 Combined module................................................................................................................31
6.2.6 M-Bus module with two relay outputs...................................................................................32
6.2.7 M-Bus module......................................................................................................................32
7. The Display Menus .............................................................................33
7.1 Menu control .............................................................................................................33
7.2 Main menu ................................................................................................................33
7.3 Menu set day values.................................................................................................35
7.4 Menu monthly values................................................................................................37
7.5 Menu average values................................................................................................39
7.6 Menu maximum values.............................................................................................41
7.7 Menu configuration....................................................................................................43
7.8 Menu service.............................................................................................................45
8. Start-up and Applications ..................................................................49
8.1 Start-up of the Supercal 531 .....................................................................................49
8.1.1 Backup battery.....................................................................................................................49
8.1.2 Supercal 531........................................................................................................................50
8.2 Applications...............................................................................................................50
8.2.1 Flow calculation....................................................................................................................50
8.2.2 The Supercal 531 in combination with standard (slow) flow sensors...................................51
8.2.3 The Supercal 531 in combination with the flow sensor Superstatic 440...............................53
8.2.4 The „cut off“- function of the Superstatic 440........................................................................54
9. Special Functions...............................................................................56
9.1 Status message of the transistor outputs..................................................................56
9.2 Threshold values.......................................................................................................56
9.3 Solar power systems and cooling systems ...............................................................56
9.4 Tariff functions and/or status message signal...........................................................56
9.5 Open System (In development).................................................................................57
9.6 Power Supply............................................................................................................57
9.7 Error Output ..............................................................................................................57
9.8 Energy-assessing hot water meter / 1 sensor system...............................................57
10. Seals and Operating Modes...............................................................58
10.1 Sealing concept.........................................................................................................58
10.2 Test and parameterisation mode...............................................................................58
10.3 Calibration Mode.......................................................................................................59
10.4 Nowa / Unicon...........................................................................................................59
11. Technical Data ....................................................................................60
11.1 Integrator Supercal 531.............................................................................................60
11.2 Mains supplies ..........................................................................................................60

Manual Integrator Supercal 531 06-06-2011 5
11.2.1 Mains module with backup-battery.......................................................................................61
11.2.2 Battery module.....................................................................................................................61
11.3 Communication features...........................................................................................62
11.3.1 Standard version..................................................................................................................62
11.3.2 Options of standard setting...................................................................................................64
11.3.3 Optional communication modules.........................................................................................65
12. Identification Plate Supercal 531.......................................................69
13. Mounting and Dimensional Drawing ................................................70
14. Error Messages...................................................................................71
15. Project Planning..................................................................................72
16. Annexe.................................................................................................73
16.1 Nowa / Unicon...........................................................................................................73
16.1.1 SONTEX NOWA.EXE V1.03................................................................................................75
16.2 Tariff Functions .........................................................................................................78

Manual Integrator Supercal 531 06-06-2011 6
1. Introduction
1.1 Brief description
This Supercal 531 convinces by using state-of-the-art multi-functional technologies and by its
modular concept.
It can easily be adapted to our customer‘s requirements such as e.g. simplified system integration,
tariff functions, data logger functions, universal data transfer or connection to existing process sys-
tems. It is mainly used in applications where a calibrated energy meter is required such as in dis-
trict heating networks and heating systems, cooling systems as well as in industry installations.
1.2 Advantages of the Supercal 531
The modular concept enables simple and low cost replacement of the meter after expiry of the
validity of the calibration
Clear and user-friendly operational concept
EEPROM for the communication set-up in the base part as well as customer ID
Display of date and time guaranteed by back-up battery and readout over the EEPROM with
the service device
Communication options and functions can be installed later without infringing the calibration
Up to four analogue outputs, M-Bus, RS-232, four relay-, two open-collector- outputs and two
impulse inputs can be used
Mains- or battery-supplied
Self-recognition of the communication options and the power supply
Monitoring and readout of the operating modes in different levels depending on authorization
M-bus acc. to EN1434 (300..9’600 baud)
Connection of temperature sensors Pt500 and Pt100 in two-wire or four-wire technology
Maximum measurement precision due to high-sensitive temperature detection
Precision even higher than required by EN1434
High reliability due to extensive monitoring of the operating modes
Various possibilities to combine with mechanical, magnetic-inductive, ultrasonic- or oscillating
flow sensors up to Qn 10'000 m3/h
Meets the requirements of MID, PTB, OIML and EN1434

Manual Integrator Supercal 531 06-06-2011 7
2. Concept of the Heat Meter
2.1 Measuring concept
The energy of a heat transfer medium is always calculated with its flow rate and the difference
between „temperature high“ and „temperature low“.
The heat capacity and the density of the heat transfer medium are also considered in this cal-
culation.
The flow rate is measured with an appropriate flow sensor.
A temperature sensor pair detects the „temperature high“ and the „temperature low“ of the
heat transfer medium. As soon as ∆T > 0.2 K, the energy consumption is calculated.
For solar- or cooling systems, the medium heat capacity of the customer’s glycol mixture is
taken instead of the medium heat capacity of water (1.15 kW/m3 K).
Thus, the cooling energy is cumulated as soon as the temperature difference reaches < - 0.2
K and the „temperature high“ is < 18
o
C (the threshold value can be programmed freely).
2.2 Integrator
Modern integrators are required to fulfil a variety of customized and technical requirements, such
as:
Good readability of the displays of the integrator
Logical and clear design of the menu
Simple handling
Low costs in case of meter replacement
Flexibility with regard to the technical adaptation of different flow and temperature sensors
Modularity with regard to the device options such as data inputs and outputs etc.
High measuring precision and data safety
Normally, every integrator should be clearly assigned to one heat measuring point and be eas-
ily accessible/readable.
It is essential to avoid electro-magnetic disturbances and overheating at the place of installation.
All wiring has to be installed with a minimum distance of 300 mm from high-voltage and high-
frequency cables.
2.3 Flow sensors
Below, please find the possible / standard flow sensors:
Fluid Oscillator flow sensors
Impeller and turbine-type water meters
Magnetic-inductive flow sensors
Ultrasonic flow sensors
The following operating conditions may influence the choice of the flow sensor:
Type of measurement (heat-/cold-metering, viscosity of the medium, etc.)
Mounting position
Precision requirements of flow sensor
Existing inlet-/outlet zones (accuracy of measurement)
Price-/performance ratio in general
Normally, a low pulse factor (output pulse of the flow sensor per flowing volume) is chosen to
achieve a resolution as high as possible.
Please pay attention to where the flow sensor is installed („cold side“ or „warm side“) since the
conversion from flowing volume into flowing mass is carried out on the basis of the temperature
assigned to the place of installation.

Manual Integrator Supercal 531 06-06-2011 8
In general, the flow sensor is installed at a place where the temperature of the medium is nearer to
the ambient temperature. In heating systems, this is the return line and in cooling systems, this is
the supply line.
Thus a higher measuring precision and a longer service life of the flow sensor are achieved.
2.4 Temperature sensor
Please be careful when choosing and installing the temperature sensors.
Even the most intelligent integrator is not in a position to level out mistakes made here.
It is recommended to only use type-approved platinum temperature sensors in the versions Pt500
and Pt100. They are twin sensors and can be used in two-wire technology up to a cable length of 3
m. The connection cables may never be separated, extended or shortened.
If a length of more than 3 m is required, we recommend using shielded cables of the same length.
The approval for the integrator Supercal 531 allows the use of two-wire temperature sensors up to
a length of maximum 15 m and of four-wire sensors up to a max. cable length of 50 m.
In low temperature heating system, it is recommended to install the temperature sensor directly
and without protection pocket because of the minimal temperature difference. Thus even the
slightest temperature differences and errors due to heat dissipation can be detected immediately.
In pipes up to DN 150 the temperature sensors are installed directly or with protection pocket so
that the measuring-active part of the sensor tip is placed in the centre of the pipe cross section.
For more detailed information on temperature sensors, we refer you to the Sontex overview of
temperature sensors.
2.4.1 2-Wire-cable sensor
1 / 2 3 / 4
temperature high temperature low
Due to the fact that the exact temperature difference (and not the absolute temperature) is impor-
tant for measuring the heat quantity, it is imperative that both sensor cables are of the same length
(resistance). Ex works, the sensors are paired precisely by computer and may only be used in its
original pairing.

Manual Integrator Supercal 531 06-06-2011 9
EN1434-2 2004 stipulates the following maximum cable lengths for 2-wire temperature sensors:
Wire cross section
Maxim
um cable length
Pt100
Pt500
0.22 mm2 2.5 m 12.5 m
0.50 mm2 5.0 m 25.0 m
0.75 mm2 7.5 m 37.5 m
1.50 mm2 15.0 m 75.0 m
2.4.2 4-wire-cable sensor
For installations with cable lengths of more than 3 m or with different cable lengths, we recommend
using 4-wire-temperature sensors. The maximum cable length of the 4-wire temperature sensors is
50 m.
The connection cable must have four wires. The wire cross section should be at least 0.5 mm2.
The insulation of the temperature sensor cable should be of PVC or silicone. Sontex recommends
the use of silicone as insulator.
1 / 5 and 2 / 6 3 / 7 and 4 / 8
temperature high temperature low

Manual Integrator Supercal 531 06-06-2011 10
2.4.2.1 4-wire-cable sensor with 2-wire integrator
1 / 2 3 / 4
temperature high temperature low
2.4.3 Installation guideline of temperature sensor acc. to EN1434
45°
2.4.3.1 Adherence to the operating conditions acc. to MID for temperature sensors
The temperature sensors have to be installed symmetrically in the supply and return pipe and pref-
erably directly. In case temperature sensors with protection pocket are installed, the sensor and
the protection pocket have to be conformity-approved. The tips of the temperature sensors have to
be inserted up to the halt. Installation points in the flow sensor can be used in case the tempera-
ture sensor is installed symmetrically.
The connection cables of firmly connected temperature sensors must not be shortened.
The connection cables of replaceable and conformity-approved temperature sensors installed in
the supply and return pipe may be of a maximum length of 15 m; the cables must be of the same
length.
The cable cross section must be in line with EN 1434-2.

Manual Integrator Supercal 531 06-06-2011 11
Furthermore, attention has to be paid that the integrator is electrically compatible with the tempera-
ture sensors:
Pt100-temperature sensors must not be connected to an integrator which is designed for Pt500-
temperature sensors (and vice versa).
To avoid unauthorized access, the installations points have to be sealed after installation.
2.4.3.2 Interfering factors
If there is a risk of electric or electro-magnetic interferences, temperature sensors in 2- and 4-wire
technology with shielded cables or shielded cables on the connection heads have to be used. The
shields always have to be connected to the electric mass provided in the integrator.
The risk of interfering influences rises with the length of the sensor cable.
2.4.3.3 Security advice
Risk of accident in case of improper dismounting of directly immersed temperature sensors!
Mounting and dismounting may only be carried out by authorized personnel.
2.5 Installation guidelines
The installation and start-up of a heat meter may only be carried out by authorized personnel and
in accordance with the current standards, the local security and installation instructions.
The installation guidelines acc. to EN 1434-2 and EN 1434-6 have to be followed strictly. Please
note that the heat meter will only provide the requested precision and reliability if the local regula-
tions for electric installations and the guidelines given by the manufacturer are followed.

Manual Integrator Supercal 531 06-06-2011 12
3. The Integrator Supercal 531
3.1 The modular concept
The integrator Supercal 531 consists of:
Measuring- and calibration-relevant upper part
Base part
Thanks to the modular concept of the integrator storing costs can be kept very low and replace-
ment of the meter after expiry of the validity of the calibration is simple and reasonably-priced.
In this case only the integrator upper part is replaced. The base part with all the mechanical con-
nections (mains, flow sensor, temperature sensor) does not need to be replaced.
3.1.1 Integrator upper part
The following elements are incorporated in the integrator upper part:
A LCD-display
B Index for menu navigation
C Identification plate list of menu items
D Identification plate upper part of integrator with bar code
E 2 operator buttons (control and enter key)
F Optical interface
G Calibration and user seal (not visible in picture)
H EEPROM, first non-volatile memory for data storage (not visible in picture)
A
B
C
D
E
F

Manual Integrator Supercal 531 06-06-2011 13
3.1.2 Integrator base part
The following elements are incorporated in the base part of the integrator:
a main board
b connection point for M-Bus or radio module mounted at the factory (below b, not visible)
c EEPROM, non-volatile memory for data storage
d terminals
e strain reliefs for connection cables and grounding
f Bar code label
g Optional mains- / battery supply
h 2 slotsfor optional communication modules
i rubber grommets/splash guard for connection cables
j base plate (not visible here)
k plug-in bracket for wall or top hat rail mounting (not visible here)
a
b
c
d
e
f
g
h
i

Manual Integrator Supercal 531 06-06-2011 14
3.2 Wiring diagram
The integrator upper part has to be removed to connect the inputs and outputs. The wiring has to
be done as follows:
Terminal Description
1, 2 2-wire technology, temperature high
1, 2 and 5, 6 4-wire technology, temperature high
3, 4 2-wire technology, temperature low
3, 4 and 7, 8 4-wire technology, temperature low
10 (+) pulse input flow sensor
11 (-) pulse input flow sensor
9 power supply for flow sensor
50 (+) pulse input additional pulse input 1
51 (-) pulse input additional pulse input 1
52 (+) pulse input additional pulse input 2
53 (-) pulse input additional pulse input 2
16 (+) open-collector output 1
17 (-) open-collector outputs 1 + 2
18 (+) open-collector output 2
24 M-Bus (for M-bus module mounted at the factory) *
25 M-Bus (for M-Bus module mounted at the factory) *
*Terminals 24 and 25 are only active with mounted M-bus module (mounting at manufacturer).
3.3 Flow measurement
Type-approved flow sensors with a pulse or frequency output can be connected to the integrator
Supercal 531.
The integrator has the following input pulse factors:
Up to 99'999’999 pulses/litre
Up to 99'999’999 litre/pulse

Manual Integrator Supercal 531 06-06-2011 15
3.4 Calculation of flow
The calculation of flow bases upon the volume pulses detected and cumulated within a certain time
interval.
For the first flow calculation, the integrator always requires two volume pulses to be able to calcu-
late the actual flow. Depending on the configuration the internal flow calculations are carried out
and the actual flow is indicated immediately on the LCD-display.
Configuration:
The frequency of the flow calculation depends on:
The number of volume pulses detected within a defined time interval (minimum/maximum
holding time).
The required precision of the flow calculation
The parameters relevant for the flow calculation are factory-set and can only be altered by
authorized laboratories.
3.4.1 Calculation of the flow rate with standard flow sensors
The pulse factor of standard flow sensors, such as e.g. mechanical flow sensors, is stated in
litre/pulse resp. the duration of the measuring period is stated in seconds/2.
Thus, the formula for the current flow rate in litre/hour is:
Flow rate (l/h) = kw x 3600 x pulse/time
kw (litre/pulse) = pulse factor
Pulse = number of pulses per measuring interval
Time = duration of measuring interval [s]
Examples see point 8.2.2, pages 52, 53
3.4.2 Calculation of the flow with fast flow sensors
The pulse factor of fast flow sensors is stated in pulse/litre.
The formula is as follows:
Flow rate (l/h) = 3600/time x pulse/kw
kw (pulse/litre) = pulse factor
Pulse = number of pulses per measuring interval
Time = duration of measuring interval [s]
Examples see point 8.2.3, page 53.
3.5 Temperature measurement
3.5.1 General
In principle, the measuring range of the integrator is from - 20 °C to + 200 °C.
The measuring range approved acc. to MID is from 2 °C to 200 °C. There’s no homologation below
2 °C according to the current applicable standards.
By default, the integrator Supercal 531 is designed for temperature sensors Pt500. On request,
Sontex can parameterise the integrator ex works for operation with Pt100. The connection of the
temperature sensors is possible in two-wire and four-wire technology. The temperature measure-
ment is carried out acc. to the „dual slope procedure “. An integrated calibrating system guarantees

Manual Integrator Supercal 531 06-06-2011 16
high measuring resolution and high measuring reliability. To improve the measuring reliability, a
coherence test (check of the logical sequences of the values) has been implemented.
The mains-supplied integrator Supercal 531 measures the „temperature high“ and „temperature
low“ every 3 seconds.
The battery-supplied (battery type C or D) integrator measures the temperatures every 30 sec-
onds.
3.5.2 Tolerated errors and limit values
For firmly connected temperature sensors, the maximum tolerated error (in %) is calculated acc. to
the following formula:
E
t
= ± ( 0.5 + 3 ∆
min
/ ∆ )
∆
min
= admissible minimum temperature difference = 3 K
(Acc. to MID EC type examination certificate)
The screws of the terminals of firmly connected sensors are secured with adhesive seals. A sub-
sequent exchange of the temperature sensors is not possible without damaging the seals.
The integrator software checks if the measured temperatures are within the admissible measuring
range.
If the limits of the measuring range are exceeded the integrator indicates a measuring error.
3.6 Energy metering
3.6.1 Error limits
A heat flux can be calculated on the basis of its mass, its specific heat capacity and the tempera-
ture difference.
The difference of the enthalpy between „temperature high“ and „temperature low “during a set time
t is integrated. The equation to calculate the heat energy acc. to EN 1434-1, point 8, is applied in
this case.
The admissible error is calculated as follows:
Ec = ± ( 0.5 + ∆
min
/ ∆ )
The minimum temperature difference ∆min depends on the assembly of the components. If the
integrator and the temperature sensors are checked as one unit, the min. temperature difference is
2 K acc. to the PTB-approval and 3 K acc. to the MID-approval.
To receive the EC-prototype test certificate, at least 3 K has to be reached.
3.6.2 Cooling energy
If an energy meter is installed in the return pipe to measure the cooling energy, the „temperature
sensor low“ is installed in the supply and the „temperature sensor high“ in the return pipe.
By default, the integrator Supercal 531 is checked acc. to the metrological measuring points of
EN1434 (2006) for cooling and heating energy before leaving the factory.

Manual Integrator Supercal 531 06-06-2011 17
3.6.3 Cooling energy – combined cold-/heat meter
The combined cold-/heat meter (tariff function cooling/heat tariff) calculates the cooling energy as
soon as the two following conditions are fulfilled at the same time:
temperature difference (∆t) < - 0.2 K
„temperature high“ < 18 °C
The threshold value of 18 °C for the switch-over of the combined cold-/heat meter is parameterised
ex works. It is possible to alter this value with the software Prog531 over the optical interface.
If the integrator is used as combined heat and cold meter, the cooling capacity and the tempera-
ture difference are displayed with a minus sign (-) and the relevant data are assigned to tariff 1.
An officially attested calibration of the cold meter can only be carried out, if the cooling energy
measured is within the admissible temperature range with the medium water (without glycol).
3.6.4 Insulation instruction for cooling systems
In cooling systems, the mechanical flow sensors and temperature sensors may only be insulated to
the connection.
condensed water condensed water (capillary action possible)
3.7 Calibration- and measuring-relevant data
If integrators are used for the direct billing of energy from the energy supplier to the consumer
(public monetary transfers), they are subject to the calibration obligation in most European coun-
tries.
The purpose of the obligatory calibration is to protect the consumer as well as the supplier of en-
ergy against fraud and malevolent manipulations.
Only type-approved measuring devices can be calibrated. Thus the use of inappropriate systems is
avoided.
The period of validity of the calibration is governed by national law. In most European countries it is
5 years.
Especially the following parameters are submitted to the obligatory calibration:
Pulse factor/frequency and place of installation of the flow sensor
Accumulated energy and volume with respective units
Displays and units of performance, flow and temperature
They are defined by the measuring points planned during the parameterisation at the factory or
when the parameterisation is carried out by an authorized laboratory. Thereafter, they are sealed
and thus protected against unauthorized manipulation.
If these calibration-relevant seals are damaged or removed, all warranty claims / service warranty
claims as well as the calibration of the integrator are void.

Manual Integrator Supercal 531 06-06-2011 18
3.8 Possible parameterisations
The Supercal 531 is parameterised with the software Prog531 over the optical interface or the ex
factory M-Bus module. Each integrator is manufactured after order and parameterised in the fac-
tory in accordance with the customer’s specifications.
Adaptations and modifications of the factory parameterisation can be carried out by authorized
centres (e.g. external accredited laboratories) with the necessary equipment.
Paramet
e
ri
s
ations
Possibilities
Standard
Remarks
Units
energy display kWh, MWh, GJ, BTU kWh or MWh internal calculations are based on Joule
Units
volume display m3, US-gallons, litre m
3
internal calculations
are based on m
3
Units
temperature display °C, °F or K (Delta T) °C and K internal calculations are based on °C
Place of installation return pipe, supply
pipe return pipe
Pulse factor in l / pulse 0.0001 ... 99‘999‘999 to customer’s request
Pulse factor in pulse / l 0.0001 ... 99‘999‘999 to customer’s request
Flow m
3
/l or US-Gallon/min m
3
/l m
3
/l
Power KW or MW KW KW

Manual Integrator Supercal 531 06-06-2011 19
4. Data Storage
4.1 Data storage over EEPROM
The Supercal 531 has two non-volatile EEPROMs for storing data. The data are updated every
hour in the non-volatile EEPROM of the upper part of the Integrator (MET).
Thus, the data backup is kept even in case of power supply failure. All data are updated and stored
automatically.
The first non-volatile memory is located on the PCB of the integrator in the calibration- and meas-
uring-relevant upper part (MET):
Integrator upper part (MET):
Integrator - configuration parameters
Accumulated energy
Accumulated volume
Accumulated values of the additional meters A1 and A2
Customer-specific tariff 1 (and tariff 2)
15 monthly values
32 maximum values
32 average values
2 set days
Accumulated energy or volume on set day
Operating hours
Date and time
Serial number MET*, integrator upper part
Pulse factor of flow sensor
Error history (last 10 errors)
Alarm limits and threshold values
Tariff functions
The second non-volatile memory is located on the circuit board of the integrator base part. Thus
the configuration for the data communication as well as the customer ID is kept even if the calibra-
tion- and measurement-relevant upper part has to be replaced. Here, the following data are stored:
Integrator lower part (MIO):
Serial number MIO* integrator base part
ID number / customer ID
Pulse factor of the additional meters A1 and A2
Unit of the additional meters A1 and A2
M-Bus (primary and secondary)
Baud rate (M-bus)
Radio address
Pulse factor pulse output
Parameterisation of the optional modules
* MET: Metrological
* MIO: Module Input Output

Manual Integrator Supercal 531 06-06-2011 20
4.2 Data storage with backup-batteries in the
mains modules
The mains modules:
230 VAC - 45/60 Hz
(115 VAC - 45/60 Hz on request)
24 VAC - 45/65 Hz
12..24 VDC
By default, each mains module is supplied with a backup-battery which guarantees the current
supply in case of a power failure. If a power failure occurs, the Supercal 531 is operated automati-
cally in a battery-saving mode to ensure the continuity of the metrological functions.
Without AC- or DC-mains supply, the service life of the backup-battery (depending on the applica-
tion and the ambient conditions) in constant operation with an autarkic flow sensor is up to 260'000
minutes (approx. 6 months).