Explosionproof Specifications; Tiis; System Configuration - Oval ALTI mass Series Instructions Manual

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
Sensor ambient temperature
Fluid temperature

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.
Hazardous area
Mass flowmeter sensor
(Intrinsically safe circuit)
10. 3 Inductance and Internal Resistance Value of Sensor Coil
Sensor model
CA00□□XX□□□□□□□□
Do not perform repair that will violate with explosionproof construction. If servicing is necessary, contact
your nearest OVAL sales office or sales representative.
−40℃ to +60℃
Temperature rating T4
Mass flowmeter transmitter
(Intrinsically safe related circuit)
CN2
Dedicated cable
CN3
Drive coil
Li max
（mH）
.7
−40℃ to +80℃
PA5K
CN7
Drive circuit
Circuits other
than the drive
circuit
CN1
L （＋）
N （−）
TH1
This marking indicates independent Type A
grounding construction work .
Drive circuit
Drive
resistance
R min
（Ω）
（Ω）
00
77.0
（.k×）
L-770HP--E
Non-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
Circuit other than drive circuit
Pick off coil
Li max R min
（mH） （Ω）
. .0
Pick off
resistance
（Ω）
—