Bronkhorst EL-FLOW Prestige - Manual (Page 36)

Bronkhorst High-Tech B.V.
EL-FLOW Prestige 9.17.084 36
Capacity
Type Access Range FlowDDE FLOW-BUS Modbus
Float RW 1E-10...1E+10 21 1/13 0x8168...0x8169/33129...33130
This parameter sets the maximum readout/control value (100%) for the active ‘ 24 Fluid Number’ in readout units corresponding to
the ' 129 Capacity Unit' parameter. The ' 21 Capacity' is scaled when ' 178 Pressure Inlet', ' 181 Fluid Temperature' or ' 25 Fluid Name' (or any
of the mixture parameter) are changed for the active fluidset.
Capacity Unit
Type Access Range FlowDDE FLOW-BUS Modbus
Unsigned char[7] RW See below 129 1/31 0x81F8...0x81FB/33273...33276
For EL-FLOW Prestige the following units can be set:
Mass flow Normal volume flow
(1.01325 bar(a), 0 °C)
Standard volume flow
(1.01325 bar(a), 20 °C)
(Custom) volume flow
( 246 Capacity Unit Pressure,
245 Capacity Unit Type
Temperature)
ug/h, ug/min, ug/s,
mg/h, mg/min, mg/s,
g/h, g/min, g/s,
kg/h, kg/min, kg/s
uln/h, uln/min, uln/s,
mln/h, mln/min, mln/s,
ln/h, ln/min, ln/s,
ccn/h, ccn/min, ccn/s,
mm3n/h, mm3n/m, mm3n/s,
cm3n/h, cm3n/m, cm3n/s,
m3n/h, m3n/min, m3n/s,
scfh, scfm, scfs,
sccm, slm
uls/h, uls/min, uls/s,
mls/h, mls/min, mls/s,
ls/h, ls/min, ls/s,
ccs/h, ccs/min, ccs/s,
mm3s/h, mm3s/m, mm3s/s,
cm3s/h, cm3s/m, cm3s/s,
m3s/h, m3s/min, m3s/s
ul/h, ul/min, ul/s,
ml/h, ml/min, ml/s,
l/h, l/min, l/s,
cc/h, cc/min, cc/s,
mm3/h, mm3/m, mm3/s,
cm3/h, cm3/m, cm3/s,
m3/h, m3/min, m3/s,
cfh, cfm, cfs
Unit type list
Due to compatibility the maximum string length is limited to 7 characters. Therefore some unit names are
truncated. For instance mm3n/m means mm 3
n
/min.
Controller Speed (Kspeed)
Type Access Range FlowDDE FLOW-BUS Modbus
Float RW 0.2...5 254 114/30 0xF2F0...0xF2F1/62193...62194
This parameter sets the controller speed factor for the selected fluidset. The ' 254 Kspeed' parameter is set from factory between
value '0.5' (slow) and '2' (fast). The default value is '1'. Slower or faster settings are possible between values 0.2 and 5 at the
customer's responsibility.
Actual Temperature
Type Access Range FlowDDE FLOW-BUS Modbus
Float R -250...500 142 33/7 0xA138...0xA139/41273...41274
Indication of the actual ambient temperature in °C.
Pressure
Type Access Range FlowDDE FLOW-BUS Modbus
Float RW 0...3.4E+38 143 33/8 0xA140...0xA141/41281...41282
Indication of the actual (inlet) pressure in bar(a). By default this parameter value is equal to the value of ' 178 Inlet pressure'. This
parameter can be used for active pressure correction by setting parameter ' 354 Conversion Condition Selection' to value 3 and
writing the actual pressure to ' 143 Pressure'. After power reset the parameter value is reset to the value of ' 178 Inlet pressure'.