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Installation Section 3-1
Note On unpacking the NT31/NT31C and peripheral devices, check their external
appearance and confirm that there is no damage. Also confirm that there is no
abnormal noise on shaking the PT lightly.
3-1 Installation
Install the NT31/NT31C in the operation panel and connect the power to the
NT31/NT31C as described below.
3-1-1 Installation Environment
Observe the following points when installing the PT in an operation panel.
Note 1. Do not install the PT at sites subject to the following conditions.
• Severe temperature variations
• Temperatures or humidities outside the ranges stated in the specifica-
tions
• High humidity, condensation
• Splashing chemical agents
• Severe oil splashing
• Corrosive or flammable gases
• Strong vibrations or shocks
• Direct exposure to wind and rain (outdoor sites)
• Strong ultra-violet irradiation
2. Take adequate measures to ensure shielding if the PT is used at a location
subject to any of the following conditions.
• Static electricity, or noise from other equipment
• Strong electromagnetic fields
• Nearby power cables
• Potential exposure to radioactivity
3-1-2 Installation in the Operation Panel
The NT31/NT31C is mounted in an operation panel by embedding it in the
panel.
Use the panel fittings and tool (Phillips screwdriver) included in the product
package and follow the procedure below.
1,2,3... 1. Open a hole of the dimensions shown below in the panel and install the
NT31/NT31C from the front side of the panel.
2. Attach the panel fittings at the four positions at top and bottom and two po-
sitions at right and left, shown below, from the rear of the NT31/NT31C.
Fit the hook of the fitting in the square hole in the body and tighten the
screw with the Phillips head screwdriver while lightly pulling the fitting.
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