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Tegam 921B Manual
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Tegam 921B Manual

Handheld thermometer
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The model 921B and 922B Handheld Thermometer, with thermocouple inputs, are Intrinsically Safe instruments, which
may be used in Non-Hazardous or Hazardous (Classified) Locations.
The following information will be marked on a label affixed to the 921B or 922B product.
TEGAM Inc.
10 Tegam Way, Geneva OH 44041
Handheld Thermometer for Haz. Loc. Only as to Intrinsic Safety
E506162
II 1 G
Ex ia IIB T4 Ga
Class I, Division 1, Group C and D, T4
Class I, Zone 0 AEx ia IIB T4 Ga
Zone 0 Ex ia IIB T4 Ga
DEMKO 19 ATEX 1970
IECEx UL 19.0010
-20 °C ≤ Ta ≤ +50 °C
NOTE: THIS IS AN AGENCY CONTROLLED DOCUMENT. NO CHANGES CAN BE MADE WITHOUT APPROVAL
OF THE NOTIFIED BODY.
Page 1 of 9
Product Description
Product Markings
0539
UL/cUL, ATEX/IECEx Control Drawing 921-400
TEGAM Inc.
10 Tegam Way • Geneva OH 44041
440-466-6100 • FAX 440-466-6110

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Summary of Contents for Tegam 921B

  • Page 1 The model 921B and 922B Handheld Thermometer, with thermocouple inputs, are Intrinsically Safe instruments, which may be used in Non-Hazardous or Hazardous (Classified) Locations. Product Markings The following information will be marked on a label affixed to the 921B or 922B product. TEGAM Inc. 10 Tegam Way, Geneva OH 44041 Handheld Thermometer for Haz.
  • Page 2 Product Warnings These warnings are provided as informational and are not marked on the product. Refer to the 921B Operation Manual for further detail. WARNING – EXPLOSION HAZARD – To reduce the ignition risk of a flammable or explosive atmosphere, batteries must be changed in a location known to be non-hazardous.
  • Page 3 Controlled Section Text Listing for the Operation Manual Refer to the Operation Manual, TEGAM part number 921B-900, for the following controlled text content. Compliance and Markings E506162 TEGAM Inc. 10 Tegam Way Geneva OH 44041 Handheld Thermometer for Hazardous Locations Only as to Intrinsic Safety...
  • Page 4 DANGEREUSE. DÉCONNECTEZ LES CORDONS D’ESSAI AVANT D’OUVRIR LE COMPARTIMENT Á PILE. WARNING Use only batteries listed in the manual. ADVERTISSEMENT Utilisez uniquement des piles dans le manuel d’instruction. Page 4 of 9 UL/cUL, ATEX/IECEx Control Drawing 921-400 TEGAM Inc. 10 Tegam Way • Geneva OH 44041 440-466-6100 • FAX 440-466-6110...
  • Page 5 Type Certificate and create a hazardous condition. The only batteries that TEGAM, Inc. has secured such testing, which are approved for use in either a 921B or 922B, are listed on the Type Certificate. They are: •...

  • Page 6: Battery Compartment

    At initial power on after battery replacement, allow approximately 30 seconds for instrument to stabilize. Battery Retaining Screws Compartment Gasket Figure 1: Battery Installation Page 6 of 9 UL/cUL, ATEX/IECEx Control Drawing 921-400 TEGAM Inc. 10 Tegam Way • Geneva OH 44041 440-466-6100 • FAX 440-466-6110...
  • Page 7 Typical Thermocouple IS9 Series Probe Connections with a 921B or 922B (Shown) Page 7 of 9 UL/cUL, ATEX/IECEx Control Drawing 921-400 TEGAM Inc. 10 Tegam Way • Geneva OH 44041 440-466-6100 • FAX 440-466-6110...
  • Page 8 Typical Thermocouple (as Standard Apparatus) Wired Connections with a 921B or 922B (Shown) Page 8 of 9 UL/cUL, ATEX/IECEx Control Drawing 921-400 TEGAM Inc. 10 Tegam Way • Geneva OH 44041 440-466-6100 • FAX 440-466-6110...

  • Page 9: Revision Date

    Change to new format. 8/30/2021 6843 Change allowable wire length as will be noted in Sect. 2.5 of the manual. Page 9 of 9 UL/cUL, ATEX/IECEx Control Drawing 921-400 TEGAM Inc. 10 Tegam Way • Geneva OH 44041 440-466-6100 • FAX 440-466-6110...

This manual is also suitable for:

922b