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import Alert from '@/components/docs/Alert.astro';
import deviceImage from '@/assets/images/products/counting.jpg';

<DeviceHero
  image={deviceImage}
  alt="VAD EMD — Electronic Metering Device with telemetry module"
  downloads={frontmatter.downloads}
/>

## General Description

V.A.D. s.r.o. presents the **EMD (Electronic Metering Device)** — a digital metering head with integrated telemetry module for diaphragm gas meters in residential and commercial distribution networks. The EMD transmits meter readings to the data server, accepts remote shut-off-valve commands, and monitors flow rate anomalies and tamper events.

The EMD is part of the **VAD IIoT Ecosystem**, combining field-grade hardware with cloud-side AI microservices for European gas distribution operators.

## Regulatory Compliance & Certifications

This product is designed and manufactured in accordance with the following European standards and directives:

| Standard / Directive                                 | Scope                                                                                               |
| ---------------------------------------------------- | --------------------------------------------------------------------------------------------------- |
| **EN 1359:2017**                                     | Requirements for construction, performance, safety and production of class 1.5 diaphragm gas meters |
| **MID 2014/32/EU** (Measuring Instruments Directive) | Legal metrology for gas meters used in billing applications                                         |
| **RED 2014/53/EU** (Radio Equipment Directive)       | Radio spectrum efficiency, EMC, and cybersecurity requirements for wireless telemetry               |
| **CE Marking**                                       | Conformity with EU health, safety and environmental protection standards                            |
| **RoHS 2011/65/EU**                                  | Restriction of hazardous substances in electrical equipment                                         |
| **GDPR 2016/679**                                    | Data protection and privacy for user information processing                                         |

All hardware carries CE marking and is eligible for MID certification upon request. Software architecture adheres to ISO 27001 information security management principles.

## Main Technical Characteristics

- **Alphanumeric LCD display** with intuitive menu navigation
- **High-quality PCB antenna** optimized for GSM/NB-IoT/LTE-M networks
- **UV-resistant housing** for long-term outdoor installation
- **Operating temperature range:** −40 °C to +60 °C
- **Proprietary low-load data transfer protocol** minimizing GSM network traffic
- **Dual independent power supplies:** separate circuits for metrological and telemetric modules
- **Telemetry battery:** LiPo 2,000 mAh (4.2 V – 3.4 V), battery life up to 5–10 years depending on configuration
- **Configurable absolute pressure reference value** for volume correction
- **Session diversity module:** time-separated transmission sessions improve reliability in areas with challenging radio coverage
- **Integrated shut-off valve control** with remote and automatic safety triggers

## Compatible Meter Types

The telemetry module is designed for integration with diaphragm natural gas meters from European manufacturers, including:

- PIETRO FIORENTINI series
- SAMGAS Group series
- Other meters with pulse/output interface compatible with EN 1359

<Alert type="note">
  Specific integration requires validation with the V.A.D. engineering team.
</Alert>

## Displayed Parameters

The device LCD provides real-time access to:

- Measured gas volume (m³), temperature-compensated to +20 °C reference
- Instantaneous gas flow rate (m³/h), standardized to +20 °C
- Ambient and gas temperature (°C)
- Supply voltage status for metrological and telemetry batteries
- Configured absolute gas pressure reference (kPa)
- Current date, time, and scheduled communication session
- Device serial number and firmware version
- Event log: alarms, interventions, tamper detection, communication status
- Data transfer progress to cloud/server platform

## Safety & Control Functions

### Shut-off Valve Management

- **Remote actuation** via secure server command by an authorized system operator
- **Automatic closure** triggered by:
  - Flow rate exceeding 1.25 × Qmax
  - Unauthorized housing opening (tamper detection)
- **Leak monitoring** during valve-open state with anomaly detection algorithms

### Data Archiving & Transmission

- Cumulative gas volume, reduced to standard conditions (20 °C, 101.325 kPa)
- Hourly averaged consumption and temperature values
- Event archives: alarms, emergency situations, maintenance logs, communication history
- Encrypted transmission to the VAD IIoT Ecosystem or third-party billing systems via REST API / MQTT

## Software Ecosystem & Integration

The EMD reports into the **IIoT Platform** on the VAD IIoT Ecosystem, which provides:

✅ **Unified data collection** — server architecture scaled for thousands of endpoints
✅ **Billing system integration** — direct export to SAP, Oracle and customer ERP via REST API
✅ **User account portal** — web interface for consumers to view consumption, alerts, and settings
✅ **Mobile application** (iOS/Android) — monitoring, push notifications, remote valve control
✅ **AI microservices** — leak detection, consumption forecasting, anomaly identification

The platform supports multi-tenant deployment, role-based access control, and full audit logging to meet utility-grade security requirements.

## Environmental & Operational Benefits

- 🌱 **CO₂ reduction**: optimized consumption monitoring helps households reduce emissions by up to 1.2 tons/year
- 💰 **Cost savings**: early leak detection and usage insights can save users €160–500 annually
- 🔋 **Long service life**: up to 10 years battery autonomy reduces maintenance visits
- 📡 **Network efficiency**: proprietary protocol reduces GSM data load by up to 70% vs. standard MQTT
- 🔒 **Cybersecurity**: RED 3.3 compliance, encrypted communications, secure boot, and OTA update signing

## Device Summary

The VAD EMD with telemetry module is a retrofit smart-metering product for European gas distribution networks. It combines EN 1359-compliant metrology, RED-certified wireless communication, and the VAD IIoT Ecosystem, allowing operators to deploy scalable smart metering networks. Engineered in Slovakia for the European market.

<Alert type="note">
  For technical documentation, certification files, or integration support, please contact V.A.D.
  s.r.o. at [inbox@vadsro.eu](mailto:inbox@vadsro.eu).
</Alert>