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Table 4.6.7
Digital External Indicator Using Current Output (TIIS Explosion Proof Type)
Connection
Current Output
Example 1
Connection to digital
external indicator
AXR Terminal
Example 2
Connection to analog
external indicator
AXR Terminal
*6:
To avoid the influence of external noise, use an electric counter which fits to the pulse frequency.
*7:
Resistor is not necessary in the case of an electric counter which can receive contact pulse signal directly.
*8:
Ground the AXR to avoid the current output error in simultaneous current-pulse output.
*9:
Calculate the cable resistance by using the following as a rough guideline: 10.9 Ω per 1 km for the cable with the cross section of
2 mm
, 19.5 Ω per 1 km for the cable with the cross section of 1.25 mm
2
*10: The maximum voltage is 32 V DC in the case of Lightning Protector specification (optional code A).
(5) Installing the Cover
Install the cover to the flowmeter by turning it in the direction of the arrow as shown below. Tighten cover
locking screws counterclockwise using a hexagonal wrench (nominal size 3) to lock the cover (in case of
explosion proof type).
Hazardous area Non-hazardous area
JIS Class A
+
SUPPLY
Cable Resistance:R2[Ω]
-
+
DO
-
Grounding resistance
of 100 Ω or less
(When the optional
code A is selected:
grounding resistance
of 10 Ω)
Hazardous area Non-hazardous area
JIS Class A
+
Cable Resistance:R2[Ω]
SUPPLY
-
+
DO
-
Grounding resistance
of 100 Ω or less
(When the optional
code A is selected:
grounding resistance
of 10 Ω)
Front
side
Cover locking screw
Explosion proof type
Figure 4.6.5 Installing the Terminal Box Cover
Description
Digital External Indicator
77.7%
-
+
V2
V2: Voltage between terminals of External Indicator
Relaying
terminal
Cable Resistance:R1[Ω]
*9
Cable Resistance:R4[Ω]
0.0236 × (R1 + R2 + R3 + R4) + V2 + 14.7 ≤ E1 [V] ≤ 42
In the case of R3 = 250 [Ω]
0.0236 × (R1 + R2 + R4) + V2 + 20.6 ≤ E1 [V] ≤ 42
Analog External Indicator
Internal resistance 10 Ω or less
-
+
Relaying
terminal
*9
Cable Resistance:R1[Ω]
Cable Resistance:R4[Ω]
0.0236 × (R1 + R2 + R3 + R4 + 10) + 14.7 ≤ E1 [V] ≤ 42
In the case of R3 = 250 [Ω]
0.0236 × (R1 + R2 + R4 + 10 ) + 20.6 ≤ E1 [V] ≤ 42
.
2
Both Explosion proof and
General purpose types
F0418.ai
<4. WIRING>
Transmission of AXR
output might fail when
the external indicator
breakdown occurs.
Distributor, etc.
+
E1
*9
R3
-
*9
R3[Ω]:Load Resistance
*10
Transmission of AXR
output might fail when
the external indicator
breakdown occurs.
Distributor, etc.
+
E1
*9
R3
-
*9
R3[Ω]:Load Resistance
*10
IM 01E30D01-01EN
4-17
*10
*10
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