RXT-300 SmartWireless™
RXT-300 Wireless IM
Rev. 2.0
Page 7 of 41
2.0
Installation
2.1
Guidelines for Safe Use
1.
Install unit only in areas with classifications matching with those described on the approval label. Follow
all warnings listed on the label.
Figure 8
RXT-300 Approval Label
2.
Do not use in areas containing air saturation levels of Acetic Acid, Acetone, Ammonium Hydroxide, Fuel
C, Diethyl Ether, Ethyl Acetate, Ethylene Dichloride, Furfural, N-Hexane, MEK, Methanol, 2-
Nitropropane, or Toluene.
3.
Ensure that the transceiver is properly threaded into a suitable explosion-proof rated junction box with a
female ¾” NPT threaded connection. The sensor should be threaded up at least 5 full turns until tight.
Avoid use of Teflon Tape, or any type of non-conductive pipe thread coating on the NPT threaded
connection.
4.
A good ground connection should be verified between the sensor’s metal enclosure and the junction box.
If a good ground connection is not made, the sensor can be grounded to the junction box using the sensor’s
external ground lug. Also verify a good ground connection between the junction box and earth ground.
5.
Proper precautions should be taken during installation and maintenance to avoid the build-up of static
charge on the plastic weather-guard of the transceiver.
6.
Do not substitute components that are not authorized by the scope of the safety approval. This may impair
the intrinsic safety rating.
7.
Do not operate the unit outside of the stated operating temperature limits.
8.
Do not operate the unit outside the stated operating limits for voltage supply.
9.
The sensor power supply common (black wire) must be referenced to the metal enclosure body (ground)
during installation.
10.
These units are designed to meet EN60079-0, EN60079-1, EN60079-11, UL913 7
th
Ed., and CSA C22.2
No.157-92.
11.
These units are designed have a maximum safe location voltage of Um=30V.
12.
These units pass dielectric strength of 500VRMS between circuit and enclosure for a minimum of 1
minute at a maximum test current of 5mA.