Basic System
Counters
active?
Flow Conversion AFB
yes
no
Ø Stop all counters
Ø Additional options for
deactivated counters / flow
directions
Ø Low flow cut off (optional)
Ø Q min monitoring (optional)
Ø Q max monitoring (optional)
Gas meter data
V, Q
Ø Gas meter correction (optional)
Vm, Qm, Q min alarm / Q max alarm (if applicable)
Ø Conversion, energy and mass calculation
Selectable conversion modes:
• Vb = Vc * C ; E = Vb * HV; M = Vb * ρb
• M = Vc * ρm; Vb = M / ρb, E = Vb * HV
• Vb = Vc * C ; M = Vb * ρb; E = M * HM
Vc, Qc, Cf
Vb, Qb
Ø Evaluation of input value errors
Ø Evaluation of Q min / Q max monitoring
Ø Counter generation for Vm, Vc, Vb, E, m (main, error and
unhaltable counters in each case)
Operating mode of main and error counters according to EN12405
or parameterizable individually
Gas Quality AFB
C, HV, HM,
ρb, ρm
Ø Message generation
Export values:
counters, flow rates,
measurements….
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