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:

  • URx41xE with ATEX certification d
  • URx41xS with ATEX certification n
  • URx41xI in IP65 execution
  • URx41xL 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 URx41xx) 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

URx41.P

Car parks gas detector for EW40 BUS system – IP55

  • URB41SP Gasoline
  • URG41SP Methane (G)
  • URO41SP Carbon monoxide (O)
  • URP41SP LPG (P)

* Other gases on request, consult the technical data sheet

URx41xL

Gas detectors for EW40 BUS system – IP55

  • URB41xL GASOLINE VAPOUR (B)
  • URC41xL PROPANE (C)
  • URE41xL ETHYL ALCOHOL (E)
  • URG41xL METHANE (G)
  • URI41xL HYDROGEN (I)
  • URL41xL ACETYLENE (L)
  • URM41xL AMMONIA (M)
  • URO41xL CARBON MONOXIDE (O)
  • URP41xL LPG (P)
  • URT41xL OCTANE (T)
  • URD41IL CARBON DIOXIDE (D)
  • URS41xL OXIGEN (S)

URx41xI

Gas detector for EW40 BUS system – IP65

  • URB41xI GASOLINE VAPOUR (B)
  • URC41xI PROPANE (C)
  • URE41xI ETHYL ALCOHOL (E)
  • URG41xI METHANE (G)
  • URI41xI HYDROGEN (I)
  • URL41xI ACETYLENE (L)
  • URM41xI AMMONIA (M)
  • URO411I CARBON MONOXIDE (O)
  • URP41xI LPG (P)
  • URT40xI OCTANE (T)
  • URD41II CARBON DIOXIDE (D)
  • URS41xI OXIGEN (S)

URx41xS

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

  • URB41xS GASOLINE VAPOUR (B)
  • URC41xS PROPANE (C)
  • URE41xS ETHYL ALCOHOL (E)
  • URG41xS METHANE (G)
  • URI41xS HYDROGEN (I)
  • URL41xS ACETYLENE (L)
  • URM41xS AMMONIA (M)
  • URO41xS CARBON MONOXIDE (O)
  • URP41xS LPG (P)
  • URT41xS OCTANE (T)
  • URD41IS CARBON DIOXIDE (D)
  • URS41xS OXIGEN (S)

URx41xE

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

  • URB41xE GASOLINE VAPOUR (B)
  • URC41xE PROPANE (C)
  • URE41xE ETHYL ALCOHOL (E)
  • URG41xE METHANE (G)
  • URI41xE HYDROGEN (I)
  • URL41xE ACETYLENE (L)
  • URM41xE AMMONIA (M)
  • URO41xE CARBON MONOXIDE (O)
  • URP41xE LPG (P)
  • URT41xE OCTANE (T)
  • URD41IE CARBON DIOXIDE (D)
  • URS41xE OXIGEN (S)