Product Passport

General Information

Purpose

The VADTel-IIoTU3 unit is intended for remote telemetry from utility meters including gas volume correctors, heat calculators, and water meters. It transmits data to a centralized server for collection, analysis, and long-term storage using GSM/GPRS networks operating at 900/1800 MHz frequencies. Includes integrated Ex ib IS barrier RS-485 interface for intrinsically safe connections (optional for EX version).

Key Advantages

• Universal compatibility with major brands of correctors and calculators
• Fully autonomous operation using an internal high-capacity battery
• Remote firmware update via server command — supporting protocol evolution without field technician visits
• Auxiliary power output for RS-485 interface and attached devices
• Local analysis of emergency events with real-time reporting to server or SMS notifications

Functional Description

• Scheduled polling of meters with onboard storage of collected data
• Adaptive transmission to the server via GPRS — based on schedule or emergency triggers
• Emergency event detection and alerts sent via SMS to configured numbers
• Multi-protocol support for integration with a range of meter types
• Real-time and historical data access via server dashboard
• Remote configuration including polling intervals via SMS

Application

• Commercial measurement and billing of gas, thermal energy, and water
• Municipal and industrial telemetry systems
• Utility infrastructure in smart cities
• Automated Metering Infrastructure (AMI) solutions

Compliance with EU Directives

The VADTel-IIoTU3 complies with the following EU directives:

• EMC Directive 2014/30/EU (EN 55032:2015, EN 55035:2017) — verified by SIM800C_EMC Test Report_2024.
• EMC Directive 2014/30/EU (EN IEC 61000-6-1:2019, EN IEC 61000-6-3:2021, EN IEC 61000-3-2:2019/A1:2021, EN 61000-3-3:2013/A2:2021/AC:2022-01) — verified by PKCELL_LP_CE-EMC_Certificate_2024
• RED Directive 2014/53/EU (Radio Equipment Directive) — certified by SIM800C_CE(RED) Certificate_2024.
• RoHS Directive 2011/65/EU — verified by SIM800C_ROHS_Test Report_2019.
• WEEE Directive 2012/19/EU (Waste Electrical and Electronic Equipment).
• GDPR (Data transmission security and privacy).
• SAR/MPE Requirements (EN 62311:2020) — verified by SIM800C_MPE Test Report_2024.

Environmental Conditions

• Operating temperature: −40 °C to +60 °C.
• Humidity: up to 98% at +35°C (non-condensing).
• Ingress Protection: IP54 (IEC 60529).
• Impact Resistance: IK07 (EN 62262).

Power Supply

• Operating voltage: 24 V DC.
• Power consumption:
  • Transmission mode: ≤600 mA.
  • Standby mode: ≤0.003 mA.

Identification Information

Serial Number

Each device is assigned a unique serial number. Example format: VAD-1234567890.

Manufacture Date

The production date is indicated on the device label in the format YYYY-MM-DD (e.g., 2025-04-15).

Document Version

• Passport version: 1.1
• Passport release date: 2024-04-21

Released By

• Authorized Person: Markus Schmidt
• Position: Head of Quality Assurance
• Signature: _
• Date of Release: ___

Technical Specifications

Key Parameters

Intrinsically Safe Interface RS-485 Entity Parameters (optional for EX version)

Warranty

• Warranty period: 24 months from the date of purchase.
• The warranty becomes void if installation rules are violated or if the device is tampered with.

Package Contents

Installation & Operation

Installation

• Installation must be performed by certified specialists.
• Normally, no configuration of the module is necessary.
• Installation requirements:
  • Protect from direct sunlight.
  • Minimum distance from metal structures: 3 cm.

Maintenance

• Annual inspection:
  • Check for housing and seal integrity.
  • Clean with a dry, soft cloth.

Connection diagram

The connection diagram for the unit to the Elster EK series corrector is shown in the figure below.

%%{init: {'flowchart': {'curve':'linear','nodeSpacing':18,'rankSpacing':130,'padding':26,'subGraphTitleMargin':{'top':10,'bottom':18}}}}%%
flowchart LR
  subgraph DEV1["«IIoTU3»"]
    direction TB
    J8_1["J8 · 1 · T+"]
    J8_2["J8 · 2 · T-"]
    J2_1["J2 · 1 · R+"]
    J2_2["J2 · 2 · R-"]
    J2_3["J2 · 3 · +U"]
    J2_4["J2 · 4 · -U"]
  end

  JP(( )):::dot
  JN(( )):::dot

  subgraph DEV2["«EK2xx»"]
    direction TB
    EK_T2["2 · T+"]
    EK_T1["1 · T-"]
    EK_R4["4 · R+"]
    EK_R3["3 · R-"]
    EK_Ri["5 · Ri"]
    EK_GND["6 · GND"]
    EK_Up["1 · +Uext"]
    EK_Un["2 · -Uext"]
  end

  SHLD["Cable shield"]
  ERTH["⏚ PE"]

  J8_1 --- EK_T2
  J8_2 -.- EK_T1
  J2_1 --- EK_R4
  J2_2 -.- EK_R3
  J2_3 --- JP
  JP --- EK_Ri
  JP --- EK_Up
  J2_4 -.- JN
  JN -.- EK_GND
  JN -.- EK_Un
  SHLD -..- ERTH

  linkStyle 0 stroke:#22b14c,stroke-width:2.5px
  linkStyle 1 stroke:#22b14c,stroke-width:2.5px,stroke-dasharray:6
  linkStyle 2 stroke:#00aeef,stroke-width:2.5px
  linkStyle 3 stroke:#00aeef,stroke-width:2.5px,stroke-dasharray:6
  linkStyle 4 stroke-width:2.5px
  linkStyle 5 stroke:#f15a24,stroke-width:2.5px
  linkStyle 6 stroke:#a06a3a,stroke-width:2.5px
  linkStyle 7 stroke-width:2.5px,stroke-dasharray:6
  linkStyle 8 stroke:#f15a24,stroke-width:2.5px,stroke-dasharray:6
  linkStyle 9 stroke:#a06a3a,stroke-width:2.5px,stroke-dasharray:6
  linkStyle 10 stroke:#888888,stroke-width:1.5px,stroke-dasharray:3

  classDef dot fill:#888888,stroke:#888888;

Programming interfaces of Elster “EK” series correctors for work with VADTel-IIoTU3:

Safety & Disposal

Ensure correct connection to certified intrinsically safe equipment. No modifications to the internal IS barrier are permitted without conformity assessment (optional for EX version).

RoHS Compliance

The device does not contain:

• Lead (Pb), Cadmium (Cd), Mercury (Hg), Hexavalent Chromium (CrVI).
• Polybrominated Biphenyls (PBBs), Polybrominated Diphenyl Ethers (PBDEs).
• Phthalates (DEHP, BBP, DBP, DIBP) in concentrations exceeding 0.1%.

Contacts

• Manufacturer: V.A.D. Technical Engineering and Investment s.r.o.
• Address: Konvetna 6, 81 103 Bratislava, Slovakia.
• Phone: +421 910 411 379.
• Email: inbox@vadsro.eu.
• Website: https://vadsro.eu.

Marking / Labeling

CE Marking

Label includes:

• Device name (VADTel-IIoTU3)
• Manufacturer name and address
• Serial number
• CE mark, WEEE

VADTel-IIoTU3 Label

Approvals / Certifications

The RS-485 interface complies with ATEX Directive 2014/34/EU for connection to Zone 1 devices under intrinsic safety protection concept (Ex ib) (optional for EX version).

Applicable standards: EN 60079-0, EN 60079-11, EN 60079-14, EN 61326-1.

Revision History

Additional Information

SIM800C Certificates

• CE-RED (2024): Compliance with Directive 2014/53/EU (Radio Equipment).
• EMC (2024): Successfully passed electromagnetic compatibility tests.
• MPE (2024): SAR levels within limits (≤1.6 W/kg).
• RoHS (2019): Free of hazardous substances.

All certificates are available upon request through customer support.

EU Declaration of Conformity

The manufacturer V.A.D. Technical Engineering and Investment s.r.o., Konvetna 6, 81103 Bratislava, Slovakia, hereby declares that the product:

Product name: VADTel-IIoTU3 Description: Smart telemetry device with integrated RS-485 interface

is in conformity with the provisions of the following European Directives:

• 2014/30/EU (EMC Directive)
• 2014/53/EU (RED Directive)
• 2011/65/EU (RoHS Directive)

and complies with the following harmonized standards*:

• EN 60079-0:2018 (Explosive atmospheres – General requirements)
• EN 60079-11:2012 (Explosive atmospheres – Intrinsic safety “i”)
• EN 60079-14:2014 (Explosive atmospheres – Electrical installations design, selection and erection)
• EN 61326-1:2013 (EMC requirements)

Important note: The device itself is not ATEX certified equipment and shall be installed outside hazardous areas. Only the RS-485 IS output complies with ATEX requirements for connection to certified Zone 1 (Category 2G, Ex ib IIC T4 Gb) equipment.

Place: Bratislava, Slovakia Date: 1.04.2024

Signed by: Markus Schmidt Head of Quality Assurance V.A.D. Technical Engineering and Investment s.r.o.

* optional for EX version