CALEFFI CONTECA EASY ULTRA

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01307/19 GB

Technical specications

- Electric supply: 24 V (+10 % / -5 %) (ac) - 50 Hz - 1 W

- Data transmission: M-Bus protocol on BUS RS-485 (default)

MODBUS protocol on BUS RS-485 (on request)

- Tamper-proof protection

- Advanced control software

- Conformity: Directive 2014/32/EU EN 1434 (MI004)

Standard installation

Product range

7507 series Heat meter with threaded connection size 1/2”–1 1/2”

7507 series Heat meter with anged connection

size DN 50–DN 200

Code 755010 TOUCH-screen controller

Code 750450 EASY datalogger

Code 750350 EASY TELE datalogger

7558 series Additional options

Function

CONTECA

EASY ULTRA is an ultrasonic heat meter, especially

suited to measuring thermal energy consumption in residential

buildings; thanks to a double memory register, it can also meter

energy in both heating and cooling modes (option code 755810).

The device comprises an electronic calculator unit, an ultrasonic

ow meter and two temperature probes. The CONTECA

EASY

ULTRA meter is extremely simple to install and requires no special

maintenance.

The ow is measured using the two-way ultrasound technique, based

on the transit time method. As it has no moving parts, the device

is therefore not very susceptible to build-up issues and offers an

extremely low pressure drop.

The

CONTECA

EASY ULTRA

meter is equipped with an 8-digit LCD

display that can be switched on with a key. This display enables easy

reading of both energy consumption values and technical data, for

appliance operating status evaluation and data logging.

The CONTECA

EASY ULTRA meter is able to acquire up to 4

additional pulse inputs and two additional alarm-status digital inputs,

and is equipped for centralised teletransmission (max. 250 users) in

M-Bus protocol, on the RS-485 network. The device also supports

MODBUS RTU protocol.

CALEFFI

RS485

EASY

CONTECA

EASY

M07 1259

07185865

CONTECA

EASY ULTRA direct heat meter

MID Directive - Bus RS-485 transmission

7507 series

Main Page

Need help?

Do you have a question about the CALEFFI CONTECA EASY ULTRA and is the answer not in the manual?

The CONTECA® EASY ULTRA is an ultrasonic heat meter designed for measuring thermal energy consumption in residential buildings. It can also meter cooling energy, making it a versatile solution for various applications. The device is available in two models: 7507 (for heating only) and 7504 (for heating and cooling).

Function Description:

The CONTECA® EASY ULTRA operates on the principle of ultrasonic measurement, which allows for accurate and reliable metering of thermal energy. It uses a two-way ultrasonic method for flow measurement, which is robust and unaffected by suspended particles or low pressure drop. The device is equipped with an 8-digit LCD display that shows various parameters such as instantaneous values, monthly and daily log data, and operating status. It can store up to 24 months of consumption data and 480 daily log entries. The meter is designed for easy installation and maintenance, with no moving parts and a compact design.

The CONTECA® EASY ULTRA meter is capable of acquiring up to 4 additional digital inputs, which can be used to monitor other parameters like domestic hot water consumption or cooling energy. These inputs can be configured as pulse inputs (for external meters) or digital inputs (for status monitoring). The device can be integrated into a building management system (BMS) via M-Bus or RS-485 communication protocols, allowing for remote acquisition and data centralisation.

Important Technical Specifications:

Flow Measurement: Two-way ultrasonic method.
Temperature Measurement: PT500 temperature probes (pair).
Display: 8-digit LCD display.
Data Logging: Up to 24 months of consumption data, 480 daily log entries.
Additional Inputs: Up to 4 digital inputs (pulse or status).
Communication: M-Bus (EN 13757) and RS-485 (Modbus RTU protocol).
Power Supply: 24 V (ac) 50 Hz or 230 V (ac) 50 Hz.
Operating Temperature: 10-90 °C (heating), 3-20 °C (cooling).
Pressure Rating: PN 16 or PN 25.
Flow Rate Range: Available in various sizes from 1/2" to 2" (DN 15 to DN 50) with corresponding flow rates.
Accuracy Class: Class 2 (EN 1434).
Protection Class: IP 54.
Battery Life: 12 years (for models with battery power).

Usage Features:

Easy Installation: The meter is designed for straightforward installation in both new and existing systems. It can be installed horizontally or vertically.
User-Friendly Interface: The LCD display provides clear and comprehensive information, accessible via a simple button interface. Users can navigate through various menus to view current values, historical data, and system status.
Remote Data Acquisition: With M-Bus and RS-485 communication, the meter can be easily integrated into central data acquisition systems, allowing for remote monitoring and billing.
Multi-Energy Measurement: The 7504 model can measure both heating and cooling energy, making it suitable for systems with reversible heat pumps or combined heating/cooling applications.
Additional Pulse Inputs: The ability to connect external pulse meters (e.g., for domestic hot water, gas, or electricity) allows for comprehensive energy monitoring within a single device.
Tamper-Proof Design: The device includes features to prevent tampering, such as lead sealing points for the meter body, probes, and communication cables, ensuring data integrity.
Flexible Configuration: The meter can be configured for various applications, including single-family homes, multi-apartment buildings, and commercial properties.
Error Detection: The meter continuously monitors its operation and can detect errors such as flow rate anomalies, temperature sensor failures, and communication issues.

Maintenance Features:

No Moving Parts: The ultrasonic measurement principle eliminates the need for moving parts, reducing wear and tear and extending the meter's lifespan.
Self-Cleaning: The design of the flow sensor helps prevent the accumulation of dirt and debris, reducing the need for frequent cleaning.
Strainer Maintenance: Regular cleaning of the strainer on the flow pipe is recommended to protect the meter from impurities. The manual provides guidelines for checking and cleaning the strainer.
Lead Sealing Procedure: The manual details the procedure for lead sealing the meter, probes, and communication unit, which is crucial for maintaining the integrity of the measurement and preventing unauthorized access.
Diagnostic Information: The meter provides diagnostic information on its display, including error codes and operational status, which aids in troubleshooting and maintenance.
Long Battery Life: For battery-powered models, the 12-year battery life ensures long-term operation without the need for frequent battery replacement.
Software Updates: The CONTECA® EASY ULTRA system can be updated with new software versions, allowing for future enhancements and compliance with evolving standards.
Modular Design: The modular design of the system, including separate components for the calculation unit, flow sensor, and temperature probes, facilitates easier replacement of individual parts if needed.