URx21xL – Gas detectors with 4÷20 mA output and 4 relay outputs – IP55

Gas detector in IP55 metal enclosure with operating status LED, to warn of gas alarms through 4÷20 mA analogue output or at threshold limit setpoints (pre-alarm, level 1 and 2 alarms, failure) that can be freely selected using dip-switch (with optional card UZR20.4 ).

Power supply: 10÷28 Vdc
Signal outputs: 4÷20 mA
Command outputs: 4 SPDT relays (with card UZR20.4)
Sensor: S (Standard) or P (Professional)
Protection rating: IP55
Ambient temp.: -20 °C/+50 °C
Extended Temp. Range (On request): -40 °C/+70 °C

Sensigas URx21xL documentation
Sensigas URD21IL CARBON DIOXIDE documentation
Sensigas URS21.L OXYGEN documentation

Professional sensor (P)

URx21PL

URB21PL GASOLINE VAPOUR (B)
URC21PL PROPANE (C)
URE21PL ETHYL ALCOHOL (E)
URG21PL METHANE (G)
URI21PL HYDROGEN (I)
URL21PL ACETYLENE (L)
URM21PL AMMONIA (M)
URO21PL CARBON MONOXIDE (O)
URP21PL LPG (P)
URT21PL OCTANE (T)

Standard sensor (S)

URx21SL

URB21SL GASOLINE VAPOUR (B)
URC21SL PROPANE (C)
URE21SL ETHYL ALCOHOL (E)
URG21SL METHANE (G)
URI21SL HYDROGEN (I)
URL21SL ACETYLENE (L)
URM21SL AMMONIA (M)
URO21SL CARBON MONOXIDE (O)
URP21SL LPG (P)
URT21SL OCTANE (T)
URS21SL OXYGEN (S)
URD21IL CARBON DIOXIDE (D)

  • 128x64 dot (32x18mm) backlit graphic display
  • Hall sensors for menu navigation with magnetics actuator UCM (with enclosure closed)

Professional sensor (P)

DN-URx21PL

DN-URB21PL GASOLINE VAPOUR (B)
DN-URC21PL PROPANE (C)
DN-URE21PL ETHYL ALCOHOL (E)
DN-URG21PL METHANE (G)
DN-URI21PL HYDROGEN (I)
DN-URL21PL ACETYLENE (L)
DN-URM21PL AMMONIA (M)
DN-URO21PL CARBON MONOXIDE (O)
DN-URP21PL LPG (P)
DN-URT21PL OCTANE (T)

Standard sensor (S)

DN-URx21SL

DN-URB21SL GASOLINE VAPOUR (B)
DN-URC21SL PROPANE (C)
DN-URE21SL ETHYL ALCOHOL (E)
DN-URG21SL METHANE (G)
DN-URI21SL HYDROGEN (I)
DN-URL21SL ACETYLENE (L)
DN-URM21SL AMMONIA (M)
DN-URO21SL CARBON MONOXIDE (O)
DN-URP21SL LPG (P)
DN-URT21SL OCTANE (T)
DN-URS21SL OXYGEN (S)
DN-URD21IL CARBON DIOXIDE (D)

  • 128x64 dot (32x18mm) backlit graphic display
  • Hall sensors for menu navigation with magnetics actuator UCM (with enclosure closed)
  • Control outputs: N. 4 SPDT relays integrated in the display board

Professional sensor (P)

DR-URx21PL

DR-URB21PL GASOLINE VAPOUR (B)
DR-URC21PL PROPANE (C)
DR-URE21PL ETHYL ALCOHOL (E)
DR-URG21PL METHANE (G)
DR-URI21PL HYDROGEN (I)
DR-URL21PL ACETYLENE (L)
DR-URM21PL AMMONIA (M)
DR-URO21PL CARBON MONOXIDE (O)
DR-URP21PL LPG (P)
DR-URT21PL OCTANE (T)

Standard sensor (S)

DR-URx21SL

DR-URB21SL GASOLINE VAPOUR (B)
DR-URC21SL PROPANE (C)
DR-URE21SL ETHYL ALCOHOL (E)
DR-URG21SL METHANE (G)
DR-URI21SL HYDROGEN (I)
DR-URL21SL ACETYLENE (L)
DR-URM21SL AMMONIA (M)
DR-URO21SL CARBON MONOXIDE (O)
DR-URP21SL LPG (P)
DR-URT21SL OCTANE (T)
DR-URS21SL OXYGEN (S)
DR-URD21IL CARBON DIOXIDE (D)

UZR20.4

Relay card for URx20xx detectors

4 SPDT relays 50 mA at 24Vac/dc 100 mA at 12Vac/dc

UZS20.x

Module with n. 1 opto-isolated resistive output (two wires)

UZS20.E

  • 22KOhm = normal operation
  • 10Kohm = pre-alarm
  • 2,2KOhm = alarm threshold 1
  • open = failure

UZS20.A

  • 27KOhm = normal operation
  • 10KOhm = alarm threshold 1
  • open = failure

UZS20.S

  • 27KOhm = normal operation
  • 0 Ohm = alarm threshold 1
  • open = failure