EW40 – Centralised gas detection system with communication BUS

The EW40 system used to detect gas in environments such as thermal power stations, garages, laboratories, production departments, warehouses, storage depots, industrial kitchens and, in general, in hazardous places (potentially explosive atmospheres).

The system is formed of a Control Unit UCE40 (fitted with display and keypad) and of various peripheral devices with dedicated functions (gas sensors, alarm input modules MID40, display modules MDD40, relay output modules MAR40) that share data via dedicated communication BUS.

The following gas sensors are available:

  • URx40xE with ATEX certification d
  • URx40xS with ATEX certification n
  • URx40xI in IP65 execution
  • URx40xL in IP55 execution

Main purposes of the system are:

  1. Centralise, via dedicated communication BUS, all the operating data of the gas sensors (measurements, residual life, etc) and all the alarms set off by those sensors and by the other peripheral devices of the system connected to the Control Unit
  2. Activate, in the event of alarm, warning signals and/or external systems (light signals, sirens, ventilation systems, etc.) via dedicated relay outputs fitted into the Control Unit, or via dedicated peripheral output modules. This way, the system warns of alarm and hazard conditions, and independently activates dedicated procedures for the safety of workers and plants
  3. Configure plant operating areas or zones by creating sets of peripheral devices whose alarm conditions can activate localised protection devices and/or equipment. For that purpose, the Control Unit can be used to associate one or more output modules to each sensor or set of sensors
  4. Geographically distribute the information relating to the status of an operational area or zone to the system through dedicated interface modules, each one with its own display and keypad for data scrolling

UCE40MPA

Gas detection control unit.

Fitted with communications BUS (one loop) for connection with up to 99 peripherals, such as: alarm modules, relay modules, display modules, detectors (type UR.40…) Functions to supervise and manage the EW40 system with cumulative alarm warnings (pre-alarm, level 1 alarm, level 2 alarm, failure) via dedicated relay outputs.

User interface with backlit display with 6-key multifunction keyboard.

In self-extinguishing plastic enclosure (144×144) for flush panel mounting.

Command outputs:
– four SPDT relays 250Vca 5A

Interfaces:
– one RS232 (configuration/printer)
– one RS232/RS485 (supervision – ModBus)

Protection rating: IP54

Power supply: 12 Vdc (230Vac with UCE40.AL power supply)

MAR40

Relay output module.
Provides 4 potential free digital outputs for local control of auxiliary devices (valves, ventilation systems, sirens, etc.) due to zone alarms (warning, alarm Level 1, Level 2 alarm, fault).

Self-extinguishing plastic housing for DIN rail mounting.

Control outputs: 4 relay SPDT 250Vac / 8A.

Degree of protection: IP20 (IP40 when correctly installed in the control cabinet).

Power supply: 12Vdc

MDD40

Display module.
Allows the local display device status (alarm modules, detectors type URx40xx) associated with a single area.

Self-extinguishing plastic housing for DIN rail mounting.

Degree of protection: IP20 (IP40 when correctly installed in the control cabinet)

Power supply: 12Vdc

MID40

Alarms module.
Provides 4 digital inputs for the centralization of events (generic alarms coming from buttons for manual signaling of alarm, or coming from other othr device or building automation system).

Self-extinguishing plastic housing for DIN rail mounting.

Digital inputs: 4 potential-free

Degree of protection: IP20 (IP40 when correctly installed in the control cabinet)

Power supply: 12Vdc

URx40SP

Car parks gas detector for EW40 BUS system – IP55

  • URB40SP Gasoline
  • URG40SP Methane (G)
  • URN140SP Nitrogen monoxide (N1)
  • URN240SP Nitrogen dioxide (N2)
  • URO40SP Carbon monoxide (O)
  • URP40SP LPG (P)

URx40xL

Gas detectors for EW40 BUS system – IP55

  • URB40xL GASOLINE VAPOUR (B)
  • URC40xL PROPANE (C)
  • URE40xL ETHYL ALCOHOL (E)
  • URG40xL METHANE (G)
  • URI40xL HYDROGEN (I)
  • URL40xL ACETYLENE (L)
  • URM40xL AMMONIA (M)
  • URO40xL CARBON MONOXIDE (O)
  • URP40xL LPG (P)
  • URT40xL OCTANE (T)
  • URD40SL CARBON DIOXIDE (D)
  • URS40SL OXIGEN (S)

URx40xI

Gas detector for EW40 BUS system – IP65

  • URB40xI GASOLINE VAPOUR (B)
  • URC40xI PROPANE (C)
  • URE40xI ETHYL ALCOHOL (E)
  • URG40xI METHANE (G)
  • URI40xI HYDROGEN (I)
  • URL40xI ACETYLENE (L)
  • URM40xI AMMONIA (M)
  • URO40xI CARBON MONOXIDE (O)
  • URP40xI LPG (P)
  • URT40xI OCTANE (T)
  • URD40SI CARBON DIOXIDE (D)
  • URS40SI OXIGEN (S)

URx40xS

Gas detector for EW40 BUS system – ATEX II 3G Ex nA d IIC T6

  • URB40xS GASOLINE VAPOUR (B)
  • URC40xS PROPANE (C)
  • URE40xS ETHYL ALCOHOL (E)
  • URG40xS METHANE (G)
  • URI40xS HYDROGEN (I)
  • URL40xS ACETYLENE (L)
  • URM40xS AMMONIA (M)
  • URO40xS CARBON MONOXIDE (O)
  • URP40xS LPG (P)
  • URT40xS OCTANE (T)
  • URD40SS CARBON DIOXIDE (D)
  • URS40SS OXIGEN (S)

URx40xE

Gas detector for EW40 BUS system – ATEX II 2G Ex d IIC T6

  • URB40xE GASOLINE VAPOUR (B)
  • URC40xE PROPANE (C)
  • URE40xE ETHYL ALCOHOL (E)
  • URG40xE METHANE (G)
  • URI40xE HYDROGEN (I)
  • URL40xE ACETYLENE (L)
  • URM40xE AMMONIA (M)
  • URO40xE CARBON MONOXIDE (O)
  • URP40xE LPG (P)
  • URT40xE OCTANE (T)
  • URD40SE CARBON DIOXIDE (D)
  • URS40SE OXIGEN (S)