Yokogawa EXA SC202 2-Wire Conductivity Transmitter/Analyzer - Manual (Page 34)

IM 12D08B02-01E
Installation and wiring 3-1
3. INSTALLATION AND WIRING
3-1. Installation and dimensions
3-1-1. Installation site
The EXA transmitter is weatherproof and can be installed inside or outside. It should, however, be
installed as close as possible to the sensor to avoid long cable runs between sensor and transmitter. In
any case, the cable length should not exceed 60 meters (200 feet). Select an installation site where:
• Mechanical vibrations and shocks are negligible
• No relay/power switches are in the direct environment
• Access is possible to the cable glands (see figure 3-1)
• The transmitter is not mounted in direct sunlight or severe weather conditions
When the instrument with Suffix Code "-B,-N,-D" is used, take measures so that the display window is
not exposed to direct sunlight
• Maintenance procedures are possible (avoiding corrosive environments)
The ambient temperature and humidity of the installation environment must be within the limits of the
instrument specifications. (See chapter 2).
3-1-2. Mounting methods
Refer to figures 3-2 and 3-3. Note that the EXA transmitter has universal mounting capabilities:
• Panel mounting using optinal bracket, refer to Fig. 3-2a.
• Panel mounting using two (2) self-tapping screws, refer to Fig. 3-2b.
• Surface mounting on a plate (using bolts from the back)
• Wall mounting on a bracket (for example, on a solid wall)
• Pipe mounting using a bracket on a horizontal or vertical pipe (nominal pipe diameter JIS 50A)
Fig. 3-2a. Panel mounting diagram
Fig. 3-1. Housing dimensions and layout of glands
162
202
155
180
30
77
50
42
68
115
130
56±0.2
Hood (Option)
Option code : / H
□
Grounding terminal
(M4 screw)
Transmission signal cable inlet
Cable gland : Pg13.5
Sensor cable inlet
cable gland (Pg13.5)
M6 screw (32 )
1.eps
9
34
(7.95)
(6.4) (6.1)
(7)
(2)
(5.1)
(1.2)
(3)
(4.5)
(1.65)
(2.7)
(0.35)
(1.26) depth
(1.3)
(2.20)
1 to 10
205
185
3.9 80 38
60
30
Panel thickness
Panel mounting
bracket
173 +1.1
0
156 +1.1
0
121
138
PANEL CUTOUT
5.eps
(0.04 to 0.39)
(7.28)
(8.07)
(1.5) (3.15) (0.15)
(6.14)
(4.76)
(6.81) (5.43)
(1.2)
(2.36)
49
Adapter
G1/2 screw (/AFTG)
1/2 NPT screw (/ANSI)
Approx.
55
2.eps
(2.2)
(1.93)
Unit: mm (inch)