SKVA-03 up to 32 measurement channels

  • Description
  • Specifications

The SKVA-03 Gas Detecting System is designed to measure the concentration of toxic gases and combustible substances in air in explosion-proof and explosive areas, archive the results, signal (by light and sound) about amounting to the set concentration levels, generate and issue control signals for external devices on transition events of measured concentrations through predetermined levels. The system supports information exchange with a remote terminal via the RS-485 Modbus RTU interfaces and via the Ethernet (through interface converter).

The scope of the gas detecting complex is determined by the requirements set forth in regulatory documents related to equipment, measuring instruments, control, management, automation, and emergency protection (EP) of industrial enterprises. The use of the system in general industrial design is allowed only for explosion-proof rooms and outdoor areas. The use of the system in explosion-proof design is allowed only for Categories 1 and 2 explosive areas in accordance with the explosion protection marking.

Projects for the SKVA-03 Gas Pollution Systems, see the Typical Solutions

The system consists of a set of blocks and modules subdivided by functional attribute into the following groups:

  • Transducers;
  • Devices for managing, collecting, and processing information.

The metrological characteristics of the system are determined by transducers included in the system.

The maximum quantity of transducers connected to one system is 32.

The maximum quantity of areas controlled by one system is 8.

The maximum quantity of relays installed in one system is 16.

The maximum quantity of systems connected to one external controller via the Modbus RTU Protocol, is 16.

Comparison of the SKVA-01 and SKVA-03 Systems

Characteristics SKVA-01 SKVA-03
The quantity of sensors connected to one system without additional power supplies 32 32
Maximum quantity of connected sensors Virtually unlimited 32
The quantity of gases types simultaneously controlled by one system Virtually unlimited 4
Quantity of programmable relays Virtually unlimited, the multiplicity factor is 8

Up to 16, the multiplicity factor is 4

Quantity of independent systems connected to the network

Up to 32

Up to 16

External interfaces

RS 485, Ethernet

RS 485, (Ethernet with optional converter board).

User Interface

LCD display and light and sound alarm


Available for 8 control areas

LCD touch panel



Availability of response archive

300 entries

300 entries

Service Buttons

Sound acknowledgment



Alarm Test





Not available

System Programming

Requires trained qualified personnel and specialized software

Specialists having engineering education are admitted to work provided that they are familiarized with the operating instructions. The software is intuitive and does not require special knowledge.

The availability of tools to verify the system’s operability and the algorithm of work with medium free of gas admixtures