YOKOGAWA ISC450G User Manual

2
IM 12D06D05-01E
2. GENERAL SPECIFICATIONS OF EXAxt ISC450G
A) Input specifications :CompatiblewiththeYokogawainductiveconductivityISC40serieswith
integrated temperature sensor: NTC30k or Pt1000
B) Input range
 Conductivity : 0to1999mS/cmat25°C(77°F)referencetemperature
 Minimum : 1µS/cm(atprocesstemperature)
 Maximum : 2S/cm(atprocesstemperature)
 Temperature : -20to+140ºC(0to280ºF)
Cable length : max. 60 metres (200 feet)
10 metres (35 feet) fixed sensor cable + 50 metres (165 feet)
WF10extensioncable.Influenceofcablecanbeadjustedbydoing
anAIRCALwiththecableconnectedtoadrycell
C) Accuracy (under reference conditions):
 Conductivity : ≤0.5%ofreading±1.0µS/cm
 Temperature : ≤0.3ºC(0.6ºF)
 Temp.compensation: ≤1%forNaCl,≤3%forMatrix
 Stepresponse : ≤4secondsfor90%(fora2decadestep)
Note on performance specifications
The following tolerance is added to above performance.
 mAoutputtolerance:±0.02mAof“4-20mA“
D) Transmission signals
 General : Twoisolatedoutputsof4-20mA.DCwithcommonnegative.Maximum
load600Ω.Bi-directionalHART
®
digital communication, superimposed
onmA1(4-20mA)signal.
 Outputfunction : Linearor21-steptableforConductivity,ConcentrationorTemperature.
Control function : PID control.
 Burnoutfunction : Burnup(21.0mA)orburndown(3.6mA)tosignalfailure.acc.
NAMURNE43.
Parameters : Adjustable damping
: Expire time
Hold : The mA-outputs are frozen to the last/fixed value during calibration/
commissioning
 Cond.range : minspan10µs/cm≥10%ofhighvalve(20mA)
maxspan1999mS/cm
E) Contact outputs
 General : FourSPDTrelaycontactswithdisplayindicators
 Switchcapacity : Maximumvalues100VA,250VAC,5Amps.(*)
Maximumvalues50Watts,250VDC,5Amps.(*)
 Status : High/Lowprocessalarms,selectedfromconductivity,concentrationor
temperature. Configurable delay time and hysteresis
: PID duty cycle or pulsed frequency control
  : FAILalarm
 Controlfunction : On/Off
: Adjustable damping
: Expire time

YOKOGAWA ISC450G Specifications

General

Brand	YOKOGAWA
Model	ISC450G
Category	Media Converter
Language	English