SHARKY 775 Ultrasonic Heat Meter Installation Guide

1. General Information

These instructions are intended for specialized and adequately trained personnel. Therefore, fundamental work steps are not described.

The seal on the meter must not be broken. Breaking the seal will immediately void the factory warranty and calibration. It is forbidden to shorten, lengthen, or otherwise modify the supplied cables. Respect legal provisions and operating instructions for the use of energy meters!

Installation must be carried out only by a company specialized in meter installation and/or by the electrical utility. Personnel must be appropriately trained in the installation and use of meters and electrical equipment and be aware of current directives. Medium: Water according to AGFW FW510 instructions. In case of use of water additives (e.g., anti-corrosives), the user must ensure that anti-corrosion protection is sufficient.

This product (if applicable) is considered a pressure-bearing component according to the Pressure Equipment Directive (PED) and may only be used as a pressure-bearing component with suitable and approved temperature sensors. This product is not intended for use as a safety device according to the Pressure Equipment Directive (PED).

The following information is provided on the respective device's rating plate:

• Nominal diameter DN for the piping
• Test pressure PT in bar and date
• Intended use
• Fluid group
• Mains voltage in volts

Optionally available as a variant for Tyfocor LS medium (in LCD cycle 3).

• The medium temperature is fixed at 5...130 °C (150 °C).
• The temperature range depends on the variant and nominal size. The precise temperature range is indicated on the rating plate.
• In case of condensation, the encapsulated version should be chosen.
• Environmental/operating conditions are fixed at 5...55 °C; IP 54/64; 93% relative humidity.
• Ambient temperatures below 35 °C prolong battery life.
• If the flow sensor is insulated with the piping, the calculator must be accessible.

Complete operating instructions with further details on possible versions are available at: https://www.diehl.com/metering/en/support-center/download-center/

The IZAR@Mobile 2 software is used for reading and parameterization and is available on the Internet at: https://www.diehl.com/metering/en/support-center/download-center/

Modification of parameters relevant for communication may lead to the loss of OMS certification.

2. Transport and Storage

Unpacking

Energy meters are measuring instruments and must be handled with care. To protect them from damage and impurities, they should only be removed from the packaging shortly before installation.

Transport

Transport of the meter is only permitted in the original packaging.

In case of air shipment of measuring instruments/components with radio, the radio must be deactivated before shipment.

3. Meter Installation (Fig. I)

• The energy meter is installed based on the shape and application (heat or cold meter) or on the hot or cold line of the system.
• Install the flow sensor so that the flow direction coincides with the direction indicated by the arrow on the sensor.
• Depending on the version, the flow sensor must be installed on the supply or return. The installation position is shown in Information Cycle 3.5 (see "Information Cycle (3)" on page 27) and possibly with a pictogram.

No upstream or downstream lengths are required for the flow sensor. For systems without temperature stratification, a straight section upstream of the flow sensor with 3...10 DN is recommended for eliminating flow turbulence.

The meter can be mounted horizontally or vertically on the pipes, however, always in a way that prevents air bubbles from collecting inside. The flow sensor must always be filled with liquid. Avoid ice formation on the meter.

It is recommended to mount the flow sensor in an inclined position.

To avoid cavitation, the system pressure must be at least 1 bar.

Electrical and magnetic fields can interfere with the operation of the energy meter's electronic components. Ensure sufficient space (approx. 10 cm) between the calculator / its measuring lines and possible sources of electromagnetic interference (e.g., transformers, electric motors, power lines, etc.).

The cables of the flow sensor or temperature sensor should, as far as possible, hang freely (not bundled – antenna effect) with sufficient distance from electromagnetic interference sources.

The lines for the measurement signals (temperature and flow) must not be routed in the immediate vicinity of other lines such as mains power lines, low-voltage power lines, and data transmission cables. The minimum distance of 5 cm for low-voltage lines according to EN 1434-6 must be observed.

If the medium temperature is above 90 °C or if T_water < T_ambient (cold meter application or heat meter with cold tariff), the calculator must be removed and mounted at a sufficient distance from heat sources. A wall bracket (supplied) or a spacer bracket (optional) is available for this purpose.

To facilitate meter disassembly, it is recommended to install shut-off valves upstream and downstream of the meter.

The meter must be installed in a way that allows easy access for maintenance and control operations.

Initial commissioning must be carried out and documented.

4. Temperature Sensors

Separable or unprotected temperature sensors with calibration labels must be equipped with EU approval and CE marking.

Handle temperature sensors with care! The sensor cables are equipped with a colored identification tag: Red: sensor in the hot line, Blue: sensor in the cold line.

The maximum cable length for PT100 temperature sensors is 6 m and for PT500 sensors is 10 m. Connection cables must not be shortened or lengthened.

Free temperature probes can be mounted directly in the immersion (e.g., ball valve) or in a thermometer pocket that has been tested for conformity with this type of probe. Probes should preferably be mounted symmetrically. In case of asymmetric mounting with thermal insulation, the following limit values apply:

• qp 0.6 m³/h => 10 K > 30 l/h...5 K > 120 l/h
• qp 1.5 m³/h => 10 K > 15 l/h...5 K > 150 l/h
• qp 2.5 m³/h => 10 K > 30 l/h...3 K > 250 l/h

In case of asymmetric installation without thermal insulation, the following limit values apply:

• qp 0.6 m³/h => this type of installation is not permitted!
• qp 1.5 m³/h => 10 K > 1501 /h
• qp 2.5 m³/h => 5 K > 250 l/h

After commissioning the meter, ensure that the temperature sensors are always correctly connected to the calculator.

4.1 Installation in a ball valve with adapter

(Screw-in mounting kit in a separate bag)

Use ball valves with the possibility of mounting temperature sensors with M10 x 1 thread.

Preliminary measures

• Close the ball valve.
• Unscrew the sealing screw from the ball valve.

Installation (see Fig. II)

1. Place the O-ring from the supplied screw-in mounting kit (Type A or B) onto the mounting plug.
2. Insert the O-ring with the mounting plug into the hole for the ball valve sensor (turn the mounting plug).
3. Position the O-ring in its final position with the other end of the mounting plug.

4. Fixing screw

• Type A (plastic) - Insert the fixing screw onto the temperature sensor.
• Type B (brass) - Insert the temperature sensor into the fixing screw and position the sensor in the mounting plug. Push the slotted plug completely inwards and pull out the mounting plug.

5. Insert the temperature sensor with the screw fixing into the ball valve and tighten by hand (2-3 Nm).

4.2 Installation in a submersible well

It is recommended to mount temperature sensors for nominal sizes DN25 or smaller directly in immersion only in case of new installations. The reason is the higher accuracy of temperature measurement.

5. Power Supply

5.1 Battery

The standard version has an integrated 3.6 V DC lithium battery. It is forbidden to charge or short-circuit the battery. Ambient temperatures below 35 °C prolong battery life.

Used batteries must be disposed of at designated collection points! Risk of explosion if replaced with the wrong type of battery.

5.2 Power Adapter

24V AC or 230V AC power adapters can be changed or integrated at any time.

It is mandatory to install the protective cover. Never connect between two phases, otherwise the power adapter will be damaged.

Secure the line with fuses of max. 6 A and protect against tampering. The power adapter communicates to the meter if mains voltage is present. In case of mains power failure, the power adapter's backup battery (CR2032) provides power for up to 1 year. The LCD data (after pressing the buttons), date, and time continue to be updated, but all measuring functions, including flow, are out of order. Communication via optional M-Bus, RS485, RS232 modules or via the optical interface is maintained, but reduces the backup battery life. In case of power failure, the radio is switched off.

6. Commissioning

Once the meter is installed, the components (calculator, volume meter, and both sensors) must be sealed and the meter commissioned by a specialized and authorized company according to current legislation.

Verify the plausibility of the flow and temperatures on the display. For more information, refer to the operating instructions at: https://www.diehl.com/metering/en/support-center/download-center/

6.1 Supply/Return Adjustment (Optional at Factory)

In cycle 3 ("3.5" on page 27), you can optionally set the meter's installation position on-site. This allows installation on the supply (inlet) or return (outlet). This setting must be made before commissioning the meters.

The default setting upon delivery is for the return (outlet), as shown on the display.

To access the change, use cycle 3 (see 9. Operation) of the window named "OutLEt".

Press and hold the button for >6s to bring the display/setting to "InLEt". This adjustment can be changed a total of 8 times by pressing the button. The display changes during the 6s. This phenomenon has no effect on operation.

Procedure for changing settings

Press and hold the button for >6s to make the meter execute the command displayed. With each change, the number displayed in the frame of the display decreases by 1.

After 8 changes, the installation position can no longer be modified.

The modification option terminates immediately upon water detection or after three hours of error-free operation (factory preset).

The following indication appears on the display (example): The indication related to modifications disappears.

When changing the installation position, the sensors must be adapted to the current installation (see Chapter 4).

7. Extension Modules

The meter has two slots for extension modules. Modules can be mixed, but two modules/pulse functions of the same type cannot be installed. The analog module occupies both slots. Such modules do not affect consumption recording and can be added later without damaging the calibration mark.

It is mandatory to observe the regulations concerning ESD (electrostatic discharge). Diehl Metering assumes no liability for damage (especially to the electronic control unit) resulting from non-compliance with these regulations.

7.1 Module Installation (Fig. III)

1. Open the calculator by lowering the side latches.
2. Insert the module into the corresponding slot and carefully connect the pre-curved multi-pole flat cable on both sides.
3. Close the cover and, before sealing, verify that the meter functions correctly by pressing the buttons.

7.2 Communication

Communication modules must be protected in such a way that the measuring instruments can only be opened by destroying the seals. The calculator supports three channels. In addition to radio communication, two other communication modules can be used. Both communication modules have their own primary address. Both channels have a common secondary address that corresponds to the serial number from the factory. Protocols can differ for each of the three communication channels and are preset at the factory. Using the IZAR@MOBILE 2 software, telegrams can be defined based on the customer's specific requirements.

7.2.1 Radio Communication

The integrated radio is an interface for communication with Diehl Metering radio receivers. Unidirectional communication has the following specifications:

• The module sends every 8...256 s (variable, based on 0.1% of the duty cycle (min. 8 s); depends on protocol length and programming).
• Communication always transmits updated measurement data.
• Transmission frequencies: 434 MHz, transmission power (EN 300 220-2 V3.2.1): 10mW e.r.p. / 868 MHz, transmission power (EN 300 220-2 V3.2.1): 25 mW e.r.p.
• Various Diehl Metering receivers (e.g., Bluetooth, GPRS, LAN, ...) are available for protocol reception.
• The protocol conforms to OMS Profile A or Profile B and is encrypted.
• Reading types: Walk-By, Drive-By, Fixed-Network.
• In case of problematic radio installations (shielding), the external radio module set can be used.

7.2.2 M-Bus Communication Module

The M-Bus communication module is a serial interface for communication with external devices (M-Bus central unit), e.g., IZAR CENTER. Several meters can be connected to the central unit. The module has a 2-pole terminal block with two connections marked 24 and 25.

• The connection is polarity-independent and galvanically isolated.
• The M-Bus protocol conforms to standard EN 1434, 300 or 2400 baud (automatic baud rate recognition).
• Connections: 2 x 2.5 mm².
• Current consumption: A load on the M-Bus.

7.2.3 RS232 Communication Module

The RS232 communication module is a serial interface for communication with external devices, e.g., PC; 300 or 2,400 baud. The module has a 3-pole terminal block with three connections marked 62 (Dat), 63 (Req), and 64 (GND). A special adapter cable (art. no. 087H0121) is required for connection. The colored cables are connected as follows: 62 = brown, 63 = white, 64 = green. The RS232 module can only be installed on port 2 (right).

7.2.4 RS485 Communication Module

The RS485 communication module is a serial interface for communication with external devices, e.g., PC; 2,400 baud. The module has a 4-pole terminal block with four connections marked D+, D-, +12 V, and GND. The module requires a supply voltage of 12 V DC ±5 V.

7.2.5 Modbus RTU Communication Module

• Polarity independent: connections 60 and 61
• External power supply: 12-24 V AC/DC
• Power consumption: max. 150 mW
• Connection 90 (non-inverted, +)
• Connection 91 (inverted, -)
• Communication protocol: Modbus RTU
• Channel EIA-485 (galvanically isolated)
• Flexible data format: standard 9600 bit/s, 8N1, Modbus Slave ID-1

7.2.6 LonWorks Communication Module

• Polarity independent: connections 60 and 61
• External power supply: 12-24 V AC/DC
• Power consumption: max. 150 mW
• Polarity independent: connections 96 (A) and 97 (B)
• Channel TP/FT-10
• Baud rate: 78 kbit/s
• Data format: differential Manchester encoding

7.3 Pulse Input Functional Module

Module for two additional meters. Pulse input 1 is marked with "I1- 1" and input 2 with "I2 - 1". Pulse inputs are programmable (IZAR@MOBILE 2) with a value: 1, 2.5, 10, 25, 100, 250, 1000, 2500 liters per pulse. The contactor must be galvanically isolated, e.g., Reed contacts. All available energy units within the meter, the volume unit m³, or no unit can be used as the unit.

• Input frequency: ≤ 8 Hz
• Min. pulse duration: 10 ms
• Input resistance: 2.2 MΩ
• Terminal voltage: 3 VDC
• Cable length: up to 10 m

Data is accumulated separately in registers; it is readable on the display as IN1 and IN2 and can be transmitted via communication modules.

7.4 Pulse Output Functional Module

The module has two connections for 2 programmable pulse outputs via IZAR@MOBILE 2 software. The outputs are marked on the terminal block with "O1 1" or "O2 1" and on the display with Out1 and Out2.

• External power supply: Vcc = 3-30 VDC
• Output current: ≤ 20 mA with a residual voltage of ≤ 0.5 V
• Open Collector (Drain)
• Galvanic isolation
• Output 1: f ≤ 4 Hz, Pulse duration: 125 ms ± 10%
• Pause between pulses: ≥ 125 ms - 10%
• Output 2: f ≤ 200 Hz, Pulse duration/pause ratio ~1:1
• Pulse amplitude: ≥ 5 ms
• Pulse frequency volumetrically programmable
• Standard: last position on the display

7.5 Combined Functional Module (IN/OUT)

The combined module has 2 inputs and 1 output. For pulse input specifications, see point 7.3. For pulse output specifications, see pulse output 1 in point 7.4. However, the module does not have galvanic isolation.

7.6 Analog Output Functional Module

The module has two connections for 2 passive analog outputs programmable via IZAR@MOBILE 2 software. The outputs are marked on the terminal block with "1" or "2" with the "+" and "-" poles respectively and are equipped with galvanic isolation.

• Passive; external power supply: 10...30 VDC
• Current loop 4...20 mA where 4 mA = value 0; 20 mA = max. programmable value
• Overload up to 20.5 mA, then fault current
• Errors are indicated at 3.5 mA or 22.6 mA (programmable)
• Output values: power, flow, temperature

The module is connected to the meter's electronics via a pre-wired multi-pole flat cable. The separate plug on slot 2 of the module is necessary for the analog outputs to function correctly.

7.7 NB-IoT Functional Module

1. Measuring instrument interface, 2. Green LED, 3. Red LED, 4. Electrical connection, 5. SIM card (NANO), 6. Button, 7. NFC antenna connection, 8. Antenna connection (MCX)

Mechanical Data

• Dimensions (L x W x H): 43 x 37 x 9 mm
• External antenna connection: MCX (female)
• SIM card: Nano type, 4FF

Electrical Data

• Power supply: Externally connected battery (D) or mains connection (24 V or 230 V)
• Battery life: Up to 13 years. Battery life is based on ECLO and hourly measurement (sent once/day).
• Nominal voltage: 3.0 VDC
• Power consumption (max.): 400 mA
• Power consumption (sleep mode): 6 μA

Environmental Conditions

• Operating temperature: +5 °C to +55 °C
• Operating humidity: 0 - 93% RH, non-condensing
• Operating altitude (max.): 2000 m
• Contamination level: Degree 1
• Usage environment: Indoor environments
• Storage temperature: -20 °C to +60 °C (module)

Mobile Telephony Network

• Band: 20, 8, 3
• 3GPP: Version 14 (NB2)
• Transmission power (max.): 23.0 dBm
• Reception sensitivity: -135 dBm

7.7.1 Manual Activation

The NB-IoT has the standard configuration upon delivery. To change the configuration, download the OTC (One-Touch Commissioning) application for Android, available on the Google Play Store. OTC is used to connect the module via NFC.

Locate the NFC antenna of your smartphone. During scanning or writing new configurations to the module, the NFC antenna of your smartphone must be held as close as possible to the module's NFC antenna. The NFC antenna is accessible from the front.

By default, the product is set to "standby" mode, meaning the device does not send any messages. The product can be activated manually in two ways:

• By pressing and holding the button (5) for at least 5 seconds until the green LED (1) lights up.
• Via the OTC app for mobile devices. Go to the Apply tab; in Power mode, select "Active", tap "Apply", and hold your smartphone against the back of the measuring instrument, near the module. Hold the smartphone still until it vibrates.

Upon startup, the module attempts to establish a connection with the mobile network. This phase is indicated by the green LED flashing briefly several times. When the connection to the mobile network is established correctly, the green LED remains on for 8 seconds; see the following figure.

7.7.2 Automatic Activation

Automatic activation is included in firmware version 1.3.2 as a new feature. Since the product is delivered in standby mode, the NB-IoT module activates after detecting water for three consecutive hours without interruption. For this reason, manual activation is not necessary. After automatic activation, the selected frame data is immediately transmitted.

Before disposing of the module, deactivate the SIM card to prevent misuse.

7.7.3 Manual Lock for Standalone Modules and Adapter Kits

The NB-IoT is equipped with a lock configuration that prevents unauthorized access to the module. When the configuration lock is activated, a Product Access Key (PAK) will be required to access the device via NFC. Upon delivery, the Retrofit module has a standard configuration and the configuration lock is "open". To change the configuration, download the OTC (One-Touch-commissioning) application. OTC connects to the module via NFC (see 7.7.1 page 20). Once the configuration parameters are set, set the configuration lock to "locked" to prevent unauthorized access to the module.

Ensure that the power mode is set to "active" and the configuration lock is set to "locked" after completing the profiling.

7.7.4 Use of Mains Power

When using mains power in combination with NB-IoT communication, the onboard wireless M-Bus must remain deactivated to avoid potential interference.

7.8 LoRaWAN Module Operation

1. NFC Antenna, 2. Mains cable socket, 3. Measuring instrument interface, 4. Green LED, 5. Red LED, 6. Button

Mechanical Data

• Dimensions: 63 x 50 x 15 mm
• Weight: 19 g
• External antenna socket: SMA socket (antenna to be ordered separately)

Electrical Connections

• Mains power supply: -
• Battery connection: internal
• Battery life: Up to 11 years (ECO mode)
• Nominal battery voltage: 3.6 VDC
• Power consumption (max.): 40 mA
• Power consumption (standby): ~ 3 μA

Environmental Conditions

• Operating temperature: +5 °C to +55 °C
• Operating humidity: 0 - 93% RH, non-condensing
• Operating altitude (max.): 2000 m
• Contamination level: Degree 1
• Usage environment: Indoor environments
• Storage temperature: -20 °C to +60 °C

Mobile Telephony Network

• Band: 868 MHz (occupied bandwidth: 200 kHz)
• Transmission power (max.): 13 dBm
• Reception sensitivity: -135 dBm
• LoRa Version: 1.0.2
• Activation: OTAA or ABP

7.8.1 Activation

Upon delivery, the LoRaWAN module is in passive mode. This means that in this state, the module does not transmit any messages. The module can be activated in one of the following ways:

• Via the module button: Press and hold the module button for at least five seconds until the green LED lights up.
• Via the Elvaco OTC app: Open the Elvaco OTC app (downloadable from the Google Play Store) on your smartphone and scan the module (ensure NFC is activated on your smartphone). If necessary, remove the front cover of the measuring instrument. Switch to Apply mode and activate the "active" option for Power mode. Then, click on "Apply settings". Bring your smartphone close to the module. The new settings are transmitted via NFC. You can verify that the module has been correctly integrated into the LoRaWAN® network by activating the "network join" checkbox in the Inspect tab of the OTC app.

Network Access

If the option is activated, the module attempts to access the LoRaWAN® network. This phase is indicated by a brief flashing of the red LED. Then, the green and red LEDs light up for 1 second. Subsequently, the green LED flashes several times until the module has entered the LoRaWAN® network. If the module has correctly entered the LoRaWAN® network, the green LED remains on for 8 seconds; see the following figure.

7.9 mioty4OMS Module Operation

1. Button, 2. Measuring instrument interface (measuring instrument interface cable not shown), 3. Green LED, 4. Red LED, 5. Electrical connection, 6. NFC antenna connection, 7. Antenna connection (MCX, for internal and external antenna)

Mechanical Data

• Dimensions: 63 x 50 x 15 mm
• Weight: 20 g
• External antenna connection: MCX (female)

Electrical Data

• Mains power supply: Battery
• Battery life: Up to 16 years

Environmental Conditions

• Operating temperature: +5 °C to +55 °C
• Operating humidity: 0 - 93% RH, non-condensing
• Usage environment: In the measuring instrument (IP54)
• Storage temperature: -20 °C to +60 °C (module)

8. Test Output

The internal test output is intended for control laboratories. The manufacturer provides two special cables: 1. volume test pulse, 2. energy test pulse. For further specifications (pulse values, pulse/pause duration, and pulse frequency), see the Instructions for Verification and Testing.

During energy calibration, ensure that the temperature sensors (precision resistors) remain continuously connected.

9. Display

To view the data generated by the calculator on the display, various windows are available with the assigned plant information (e.g., energy quantity, water volumes, operating days, water quantity, current temperatures, maximum values) in the form of recallable functions in a predefined sequence (cycle). The energy meter has up to 6 different display cycles.

Main cycle, measurement day cycle, information cycle, pulse input cycle, tariff cycle.

The monthly cycle consists of up to 7 readings that alternate at a rate of 2 s - 4 s. To allow for quick viewing, the cycles are marked on the display with numbers from 1 to 6. By default, the main cycle is programmed with updated data such as energy, volume, flow, and temperatures. The calibrated register is shown with a padlock symbol.

Main Cycle (1)

Attention: overview only for heat or cold meters

Measurement Day Cycle (2)

Information Cycle (3)

Pulse Cycle (4)

Tariff Cycle (5) ¹

Monthly Cycle (6)

* Example ¹Only for heat meter with active cold tariff

10. Operation

Pressing the button allows you to access the individual display screens. There is a difference whether you press the button briefly or for a long time. If you press briefly (< 3 seconds), you navigate within the same cycle, while if you press for a long time (> 3 seconds), you access the next cycle. The "Energy" window (Sequence 1.1) of the main cycle is the basic one. If the button is not pressed for approx. 4 minutes, the meter automatically turns off the display to save power (exception: in case of error). Pressing the button again turns the meter on to the default screen.

11. Display Error Codes

If an error occurs, the error code is displayed in the main cycle. By pressing the button, you can select all other windows. If the button is not pressed for approx. 4 minutes, the error code reappears automatically. As soon as the cause of the error is resolved, the error message disappears automatically. All errors that persist for more than 6 minutes are saved in the error log.

* Optional ** Depending on the application

12. Environmental Protection Note

EU directives on used batteries and waste electrical and electronic equipment provide the framework for the necessary measures to limit negative consequences at the end of the product's life cycle. This product is subject to special provisions regarding collection and disposal. For disposal, it must be handed over to a suitable facility to ensure product recovery and recycling. For further information on recycling this product, please contact the relevant Diehl Metering office.

13. Declaration of Conformity of Equipment to the MID Directive

Further information and the updated Declaration of Conformity can be found at: https://www.diehl.com/metering/en/support-center/download-center/