L-770HP--E
Sensor
ambient temperature
−40℃ to +60℃
Fluid temperature
Temperature rating T4
−40℃ to +80℃
10. 3 Inductance and Internal Resistance Value of Sensor Coil
Do not perform repair that will violate with explosionproof construction. If servicing is necessary, contact
your nearest OVAL sales office or sales representative.
Sensor model
Drive circuit
Circuit other than drive circuit
Drive coil
Drive
resistance
(Ω)
Pick off coil
Pick off
resistance
(Ω)
Li max
(
mH
)
R min
(Ω)
Li max
(
mH
)
R min
(Ω)
CA00
□
□
XX
□□□□□□□□
.7
77.0
00
(
.k
×
)
.
.0
—
Mass flowmeter transmitter
PA5K
(Intrinsically safe related circuit)
Mass flowmeter sensor
(Intrinsically safe circuit)
Non-hazardous area
Hazardous area
General equipment
(Non-intrinsically safe circuit)
Allowable voltage Um:
AC250V 50/60Hz, DC250V
Power supply
AC100 to 240V 50/60Hz
or DC20 to 30V
CN7
CN1
CN3
CN2
TH1
L(+)
N(−)
Dedicated cable
Drive circuit
Circuits other
than the drive
circuit
This marking indicates independent Type A
grounding construction work .
10. EXPLOSIONPROOF SPECIFICATIONS
10.1 TIIS
●
Explosion-proof specifications for the rack mount type transmitter (PA5K)
・
Transmitter symbol: [Ex ib] IIC
・
Transmitter ambient temperature:
-
0
℃
to
+
0
℃
●
Sensor
・
Sensor symbol: Ex ib IIB T
10.2 System Configuration
This shows the system configuration of a connection from a non-hazardous area such as control rooms
to a field (Hazardous area) mass flowmeter.