Azbil JTD910S User Manual

2-1
Chapter 2 Installation of this Device
Chapter 2 Installation of this Device
This chapter covers important points related to the installing this device and setting up its piping
and wiring. Individuals in charge of installation work should read this chapter.
2-1 Installation Location Selection Criteria
2-1-1 General Installation Conditions
(1) Introduction
Follow the selection criteria described here in order to enable this device to exhibit peak
performance over the long term.
Incidentally, when installing explosion-proof models, follow the guidelines in “Factory Electrical
Equipment Explosion-Proofing Guidelines (Gas Vapor Explosion-Proofing 2006)” from the
Research Institute of Industrial Safety, or “Factory Explosion-Proof Equipment Guide for Users”
from the National Institute of Occupational Safety and Health.
(2) Installation Location Selection Criteria
Select an installation location for this device in accordance with the following criteria.
• Choose a location with as little temperature variation as possible.
• Avoid installing the device in an area which is exposed to radiant heat from the plant.
• For areas in which there is a risk that the measured fluid, sealing fluid, etc., might freeze, take
heat insulation measures.
• Choose an area with minimal exposure to vibration and shock.
• Avoid installation in areas with a corrosive atmosphere.
• For external zero adjustment (optional), since the output of this device can undergo variation in
locations with strong magnetism (locations with motors, pumps, etc., with 10 Gauss or higher),
install the device at least 1 m away from such locations.
• Do not subject connecting pipes attached to this device to vibration.
• Use the device in the industrial electromagnetic environment specified in IEC 61326-1.
2-1-2 Explosion-Proof Transmitter Installation Criteria
(1) Installation of Explosion-Proof Transmitters
Explosion-proof transmitters which are approved by public authorities based on the Industrial
Safety and Health Law are permitted to be used in hazardous areas as described below. An explosion-
proofing test conformity label is affixed on the nameplate of these transmitters, and explosion-
proofing requirements are listed. Check these to ensure that the device is installed properly.
(2) Pressure-Resistant Explosion-Proof Model Installation Criteria
Install pressure-resistant explosion-proof models in areas which correspond to the following
electric machinery groups, explosive gas categories and temperature classes, and hazardous area
groupings.
• Explosion class and ignition temperature of target gas
IIC T4
IIC: Electric machinery group and explosive gas category
(including hydrogen)
T4: Maximum surface temperature of 135 °C.
• Hazardous area grouping:
Category 1 or Category 2 hazardous area
Cannot be installed in a “special hazardous area.”

Azbil JTD910S Specifications

General

Brand	Azbil
Model	JTD910S
Category	Transmitter
Language	English