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RHTemp1000IS Intrinsic Safety User Notice
Intrinsic Safety Approval:
The RHTemp1000IS has been certified by FM Approvals as Intrinsically Safe
(IS) for use in Class I, Division 1, groups A, B, C, D, and Nonincendive (NI) for
use in Class I, Division 2, groups A, B, C, D Hazardous (Classified) Locations.
The rating listed in the Factory Mutual approval guide is as follows:
RHTemp1000is. Temperature and Humidity Recorder.
IS / I / 1 / ABCD T4A Ta=80°C; NI / I / 2 / ABCD / T4A Ta=80°C
These are the only safety ratings relevant to the use of this product. Use of this
product in hazardous environments not specifically covered by this rating, is
prohibited, unless the user takes the appropriate steps to ensure the safety of
the product and assumes full responsibility for its safe use. Refer to the
reference sections at the end of this document for further information on
approval standards and environments.
Conditions of Use:
The following conditions must be satisfied to maintain the IS rating of the
RHTemp1000IS:
When used in hazardous locations, the RHTemp1000IS is to be
installed prior to the location becoming hazardous, and
removed only after the area is no longer hazardous.
The maximum allowed ambient temperature for the RHTemp1000IS
(under any circumstances) is 80°C. The minimum rated operating
temperature is -20°C.
The RHTemp1000IS approved for use only with the Tadiran TL-
2150/S battery. Replacement with any other battery will void
the safety rating.
Batteries are user replaceable, but are to be removed or replaced only
in locations known to be non-hazardous.
Tampering or replacement of non-factory components may adversely
affect the safe use of the product, and prohibited. Except for
replacement of the battery, the user may not service the
RHTemp1000IS. MadgeTech, Inc. or an authorized representative
must perform all other service to the product.
DOC-1271036-IS
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Standard
Date
Title
FM Class 3600
2011
Electrical Equipment for Use in
Hazardous (Classified) Locations,
General Requirements
FM Class 3610
2010
Intrinsically Safe Apparatus and
Associated Apparatus for Use in Class I,
II and III, Division 1 and Class I, Zone 0
and 1 Hazardous (Classified) Locations
FM Class 3611
2004
Non-incendive Electrical Equipment for
Use in Class I and II, Division 2 and
Class III, Divisions 1 and 2 Hazardous
(Classified) Locations
FM Class 3810
Including
Supplement #1
2005
1995
Electrical Equipment for Measurement,
Control, and Laboratory Use
The RHTemp1000IS enclosure does not carry a NEMA rating, as there
are openings in the enclosure for measuring humidity. For this reason,
the product is only suitable for use in indoor locations.
Required Labeling:
The following label must be engraved to the enclosure of the RHTemp1000IS. It
contains critical information for the safe use of the product.
Reference Standards:
The RHTemp1000IS complies with the following standards:
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Type of
Protection
Code
Permitted Use
Standard
Intrinsic Safety
(IS)
Class I, Division 1
FM Class 3610
Non-Incendive
(NI)
Class I, Division 2
FM Class 3611
Class
Group
Typical Gas
I
A
Acetylene
B
Hydrogen
C
Ethylene
D
Propane
Division
Description
1
Flammable Material Present Continuously
Flammable Material Present Intermittently
2
Flammable Material Present Abnormally
Temperature
Class
Maximum Surface Temperature (of any
component under fault conditions)
T4A
120 °C (with maximum 80 °C ambient)
Protection and Environment Reference:
The environmental rating is per ANSI/NFPA 70 National Electric Code® (NEC®)
Article 500. The following is information excerpted from FM Approvals reference
documents.
Protection Concepts
Apparatus Grouping Per NEC® 500:
Area Classification Per NEC® 500:
Temperature Class Per NEC® 500:
NOTE: the T4A rating indicates the maximum surface temperature potentially
encountered in a fault condition. This is not the allowed operating
temperature. This temperature rating limits the maximum ambient
temperature of 80°C.
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6 Warner Road, Warner, NH 03278
Phone 603.456.2011 Fax 603.456.2012
www.madgetech.com support@madgetech.com
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