Computing head liquid METHANE (LNG)

The EsiWelma TW1-B.M electronic computing heads for liquid methane have LNE-15272 rev.2 type examination certificate dated 26/08/2009 attesting to conformity with international directive OIML R117 (Metrological Instruments Directive) (liquid fuels).

In keeping with the aforesaid directive, the fuel flow meters can be supplied in two versions:

  • Standard version with electromechanical relay command output.
  • Non-sparking version with solid state relay command output, compliant with ATEX 2014/34/UE directive and with ATEX Ex nA IIC T4 X protection mode.

The display on the TW1-B.M electronic computing heads shows:

  • Price in local currency
  • Dispensed fuel in Kg
  • Unit price

Thanks to the ability to manage two mass flow meters, our computing heads can measure the gas quantity delivered during the pre-cooling phase of the tank, subtracting it from the total dispensing.

Auxiliary inputs for temperature and pressure measurements are also provided, and digital inputs for future deployments.

The electronic computing heads can be supplied with one display (one side application) or with two display (two side application).

The electronic computing heads include the preset function of both price and fuel dispensed; they also interface with a remote PC (host) to provide dispensing data conforming to the protocol in use.

MisurFuel Price list request – click here

MisurFuel LNG Liquid Methane Computing Head documentation

The electronic computing head for liquid methane (LNG), are defined as follow:

  • TW1-B.M-CB Two sided standard
  • TW1-B.M-CM One sided standard

TW1-M-CB

ELECTRONIC COMPUTING HEAD KIT TW1-B.M-CB Two sided for liquid methane (LNG)

Formed of:

  • Power supply – CPU module, part no.: TW1-B.M-CPU
  • First DISPLAY module with totalizer, part no.:TW1-DMN
  • Second DISPLAY module, part no.:TW1-DCN
  • SETUP module, part no.: TW1-STP
  • 5-connection flat cable, part no.: TW1-FL3

Technical specifications:

  • Power supply 230 Vac
  • Passivated steel enclosure
  • Provision for pre-setting
  • n. 5 Relays 3A, 270 Vac , 810 VA, N.O. for solenoid valves and signal lights
  • One host communication line, three current loop cables
  • n. 2 Pulse or ModBus inputs for Mass Flow (Krohne, Micromotion, Endress Hauser)

Options:

  • LED Backlighting for every Display (230 Vac), part no.: TW1-RCL
  • Custom host communication card

Accessories:

  • Extended Preset keypad, part no.: TW1-TEX
  • Repeater module of Alarm signal state relay 3A, part no.: TW1-MRE
  • Repeater module of Alarm signal state SSM 1A, part no.: TW1nA-MRS

TW1-M-CM

ELECTRONIC COMPUTING HEAD KIT TW1-B.M-CM One sided for liquid methane (LNG)

Formed of:

  • Power supply – CPU module, part no.: TW1-B.M-CPU
  • First DISPLAY module with totalizer, part no.:TW1-DMN
  • SETUP module, part no.: TW1-STP
  • 4-connection flat cable, part no.: TW1-FL2

Technical specifications:

  • Power supply 230 Vac
  • Passivated steel enclosure
  • Provision for pre-setting
  • n. 5 Relays 3A, 270 Vac , 810 VA, N.O. for solenoid valves and signal lights
  • One host communication line, three current loop cables
  • n. 2 Pulse or ModBus inputs for Mass Flow (Krohne, Micromotion, Endress Hauser)

Options:

  • LED Backlighting for every Display (230 Vac), part no.: TW1-RCL
  • Custom host communication card

Accessori:

  • Extended Preset keypad, part no.: TW1-TEX
  • Repeater module of Alarm signal state relay 3A, part no.: TW1-MRE
  • Repeater module of Alarm signal state SSM 1A, part no.: TW1nA-MRS

The electronic computing head for liquid methane (LNG), are defined as follow:

  • TW1nA-B.M-CB Two sided ATEX Ex nA Certified
  • TW1nA-B.M-CM One sided ATEX Ex nA Certified

TW1nA-B.M-CB

ELECTRONIC COMPUTING HEAD KIT TW1nA-B.M-CB Two sided for LNG

Formed of:

  • Power supply – CPU module, part no.: TW1nA-B.M-CPU
  • First DISPLAY module with totalizer, part no.:TW1-DMN
  • Second DISPLAY module, part no.:TW1-DCN
  • SETUP module, part no.: TW1-STP
  • 5-connection flat cable, part no.: TW1-FL3

Technical specifications:

  • Power supply 230 Vac
  • Passivated steel enclosure
  • Provision for pre-setting
  • n. 5 Solid State Relays 1A, 270 Vac , 270 VA, N.O. for solenoid valves and signal lights
  • One host communication line, three current loop cables
  • n. 2 Pulse or ModBus inputs for Mass Flow (Krohne, Micromotion, Endress Hauser)

Options:

  • LED Backlighting for every Display (230 Vac), part no.: TW1-RCL
  • Custom host communication card

Accessories:

  • Extended Preset keypad, part no.: TW1-TEX
  • Repeater module of Alarm signal state relay 3A, part no.: TW1-MRE
  • Repeater module of Alarm signal state SSM 1A, part no.: TW1nA-MRS

TW1 nA-B.M-CM

ELECTRONIC COMPUTING HEAD KIT TW1nA-B.M-CM One sided for LNG

Formed of:

  • Power supply – CPU module, part no.: TW1nA-B.M-CPU
  • First DISPLAY module with totalizer, part no.:TW1-DMN
  • SETUP module, part no.: TW1-STP
  • 4-connection flat cable, part no.: TW1-FL2

Technical specifications:

  • Power supply 230 Vac
  • Passivated steel enclosure
  • Provision for pre-setting
  • n. 5 Solid State Relays 1A, 270 Vac , 270 VA, N.O. for solenoid valves and signal lights
  • One host communication line, three current loop cables
  • n. 2 Pulse or ModBus inputs for Mass Flow (Krohne, Micromotion, Endress Hauser)

Options:

  • LED Backlighting for every Display (230 Vac), part no.: TW1-RCL
  • Custom host communication card

Accessories:

  • Extended Preset keypad, part no.: TW1-TEX
  • Repeater module of Alarm signal state relay 3A, part no.: TW1-MRE
  • Repeater module of Alarm signal state SSM 1A, part no.: TW1nA-MRS