Yokogawa digitalYEWFLO (DY) - Manual (Page 8)

INTRODUCTION
IM 1F2B4-01-YIA
Page 4
1.3 S
TANDARD
S
PECIFICATIONS
NOTE: For special applications, please contact your local Yokogawa Industrial Automation representative to
discuss possible enhancements to these standard specifications.
Fluids to be measured: Liquid, gas or steam
Performance specifications:
Repeatability: 0.2% of reading
Accuracy and velocity range :
Fluid Accuracy: Pulse Output Accuracy: Analog Output Velocity
Liquid ±0.8% of reading ±0.8% of reading plus up to 32 ft/sec
±0.1% of full scale
Gas or ±0.8% of reading ±0.8% of reading plus up to 115 ft/sec
Steam ±0.1% of full scale
±1.5% of reading ±1.5% of reading plus from 115 ft/sec
±0.1% of full scale to 262 ft/sec
Note: Gas accuracy can be improved to 0.8% over the full range by built-in software compensation. (See
how to section 4.10.)
Output signal:
Analog: 4 to 20 mADC
Pulse:
Low level 0 to 2 V
High level Vs - 2V ( Vs = input supply voltage)
Pulse width 50% duty cycle
Ambient temperature limits:
-40º to 175ºF (-40º to 80ºC): standard unit w/o agency approval ratings
-20º to 175ºF (-30º to 80ºC): with optional digital indicator
-40º to 140ºF (-40º to 60ºC): with FM explosion-proof rating
-40º to 120ºF (-40º to 50ºC): with CSA intrinsically safe rating for integral converter
-40º to 175ºF (-40º to 80ºC): with CSA intrinsically safe rating for remote converter
Process temperature limits:
Standard remote converter: -40º to 575ºF (-40º to 300ºC)
HPT remote converter: -40º to 755ºF (-40º to 402ºC)
Cryogenic remote converter: -320º to 300ºF (-200º to 150ºC)
Integral converter: See Figure 1.3.1
Storage temperature limits:
Integral or remote standard unit: -40º to 176ºF (-40º to 80ºC)
With integral indicator or totalizer: -22º to 80ºF (-30º to 140ºC)