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General| MID approval | Yes |
|---|---|
| Flow sensor type | Ultrasonic |
| Pressure range | Up to 16 bar |
| Accuracy | Class 2 (MID) |
| Communication | M-Bus, Wireless M-Bus |
| Power supply | Battery |
| Display | LCD |
| Protection class | IP54 |
| Weight | Varies depending on size and model |
| Type | Compact ultrasonic heat meter |
Details the mechanical components and assembly of the MULTICAL® 401 unit with diagram.
Details approved meter data including MID designation and environmental classes.
Provides specifications for supply voltage, battery, mains supply, and EMC data.
Outlines metrological class, environmental class, and protection class.
Details the maximum permissible error (MPE) for flow sensor, calculator, and sensor set.
Lists the materials used for wetted parts, flow sensor housing, calculator housing, and cable.
Explains the structure and meaning of the MULTICAL® 401 type number designation.
Covers the PROG parameter (A-B-CCC) used for total programming.
Details the CONFIG parameter (DD-E-FF-GG) for partial programming.
Lists partial programming data fields like customer number and target date.
Briefly mentions additional functions available for the meter.
Outlines essential requirements for proper installation of the MULTICAL® 401 heat meter.
Explains permissible installation angles and orientations for the MULTICAL® 401.
Recommends straight inlet conditions for optimal installation of the flow sensor.
Illustrates typical installation configurations for the MULTICAL® 401 meters.
Explains the time-based integration and calculation methods used by the calculator.
Describes the function and operation of the front key and internal 'P' button.
Explains how to navigate and interpret the information displayed on the MULTICAL® 401.
Lists and explains various error and information codes displayed by the meter.
Details the procedures for resetting different registers and information codes.
Explains the configuration and operation of the tariff functions (TA2, TA3).
Describes how temperature is measured using Pt500/Pt100 sensors.
Discusses the use of ultrasonic measurement with piezoceramics for flow sensing.
Outlines the fundamental principles of ultrasonic flow measurement.
Explains the transit time method used for ultrasonic flow measurement.
Defines the minimum and maximum flow limits for accurate measurement.
Provides recommendations for sizing the flow sensor based on pressure and flow rates.
Presents a table of resistance values for Pt100 and Pt500 sensors based on EN 60751.
Describes the available sensor connection types and sensor sets.
Details the Pt500 sensor set designed for use with pockets.
Describes the Pt500 short direct sensors for direct fitting.
Explains the built-in D-cell lithium battery and its lifetime.
Details the 230 VAC mains supply module, including safety transformer.
Describes the 24 VAC mains supply module with transient protection.
Specifies the available mains supply cables for 24 V and 230 V.
Details the data/pulse output module for external data logging or PC connection.
Explains the data/pulse input module for connecting external pulse signals.
Describes the M-Bus modules for remote reading via an M-Bus network.
Details the radio module for wireless reading of MULTICAL® 401 data.
Describes the radio module with external antenna for increased range.
Explains the optical reading method using an infrared receiver/transmitter.
Lists the commands and return strings for optical data reading.
Details the format and content of standard and monthly data strings.
Provides pseudo code for developing custom data communication software.
Describes the meter's testing mode for faster verification and extra functions.
Details the formulas and methods for calculating true energy supplied during verification.
Describes the pulse interface used for testing and verification rigs.
Introduces METERTOOL software and its capabilities for heat meter management.
Guides the user through the process of programming the MULTICAL® 401.
Details the verification process using METERTOOL and associated equipment.
Describes how to adjust the flow sensor during verification.
Provides an alphabetical list and explanation of terms used in the manual.
Details the type approval status and relevant test reports.
Lists the directives under which the MULTICAL® 401 is CE marked.
Provides marking information according to the Measuring Instrument Directive (MID).
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