Yokogawa ADMAG CA - Manual (Page 77)

IM 1E8B0-01E
10-1
10. OUTLINE
10. OUTLINE
10.1 Standard Specifications
• Degrees of Protection : IP67, NEMA 4X, JIS C0920 Water tight
protection
• Grounding : 100
Ω
or less
* In case of TIIS(JIS) Flameproof type, JIS Class C
(10
Ω
or less) or JIS Class A (10
Ω
or less)
* In case of explosion proof type except TIIS, follow the domestic electrical
requirements as regulated in each country.
10.1.1 Magnetic Flow Converter
A handheldterminal is necessary to set parameters for models with no
indicator.
• Output Signal :
Current output ; 4 to 20mA DC (Load resistance 0 to 750
Ω
)
Pulse output / Alarm output ; Transistor contact (contact rating: 30V DC(OFF),
200mA(ON))
• Communication signals (optional) :
BRAIN communication signals (superimposed on a 4 to 20mA DC signal)
Load resistance ; 250 to 600
Ω
(including cable)
Load capacity ; 0.22
µ
F or less (including cable)
Load inductance ; 3.3mH or less (including cable)
Maximum cable length ; 2km (6560 ft) (using CEV cable)
Space from power line ; 15cm or more (parallel wiring should be
avoided)
Input Impedance of Receiver Connected to the Receiving Resistance;
10k
Ω
or larger (at 2.4kHz)
• Span Setting Functions : Volumetric flow setting is possible by setting
volume unit, time unit, flow rate value and flow
tube size.
Volume units ; m 3 , L(liter), cm 3 , gallon(us), barrel (=158.987L)
Velocity units ; m, ft
Time units ; s (sec), min, h (hour), d (day)
Flow Tube Size ; mm, inch
• Instantaneous Flow Rate Display Function:
Flow rate can be displayed either in engineering
units or percent of span.
• Totalizer Display Function : Totalized volume in engineering unit can be
displayed by setting a totalizing factor.
• Pulse Output Function : Pulse output after scaling can be output by
setting a pulse factor.
Pulse width ; Duty 50% or fixed pulse width (0.5, 1, 20, 33,
50 or 100ms)
Output rate ; 0.0001 to 1000PPS
NOTE