IMT120 15
1
GENERAL
MISUSE OF THIS PRODUCT MAY CAUSE EXPLOSION
AND PERSONAL INJURY. THESE INSTRUCTIONS MUST
BE THOROUGHLY READ AND UNDERSTOOD BEFORE
DEVICE IS INSTALLED.
Cert number
20160531-E43374
Applicable Area
North America
Markings
Class I, Groups B, C and D; Class II,
Groups E, F and G; Class III
Applicable Standards
UL 1203;
CAN/CSA C22.2 No. 25
CAN/CSA C22.2 No. 30
Cert number
DEMKO 09 ATEX 0815573X
Applicable Area
Europe (EU)
Markings
II 2 G Ex db IIC T6 Gb; II 2 D Ex tb IIIC
T85°C Db IP66
Applicable Standards
EN IEC 60079-0; EN 60079-1; EN 60079-31
Cert number
IECEx UL 03.0001X
Applicable Area
International
Markings
Ex db IIC T6 Gb
Ex tb IIIC T85°C Db IP66
-40°C to +75°C
Applicable Standards
IEC 60079-0; IEC 60079-1; IEC 60079-31
Cert number
DEMKO 11 ATEX 1105261X
Applicable Area
Europe (EU)
Markings
II 1 G Ex ia IIC T6 Ga
Applicable Standards
EN IEC 60079-0; EN 60079-11
Cert number
IECEx UL 14.0075X
Applicable Area
International
Markings
Ex ia IIC T6 Ga
-50°C ≤ Tamb ≤ +60°C
Applicable Standards
IEC 60079-0; IEC 60079-11
120 SERIES FOR USE IN CLASS I, DIV. 1, GROUPS B, C & D;
CLASS II, DIV. 1, GROUPS E, F & G; CLASS III HAZARDOUS
LOCATIONS. ENCLOSURE TYPE 4X, IP66. AMBIENT
TEMPERATURE RANGE -50°C (-58°F) TO 71°C (160°F).
TO PREVENT IGNITION OF HAZARDOUS
ATMOSPHERES, DISCONNECT SUPPLY CIRCUITS
BEFORE OPENING. KEEP COVER TIGHT WHILE
CIRCUITS ARE ENERGIZED.
ATEX AND IEC SPECIFIC CONDITIONS OF USE:
DIMENSIONS OF THE FLAMEPROOF JOINTS ARE
OTHER THAN THE RELEVANT MINIMUM OR MAXIMUM
SPECIFIED IN TABLES 1 THROUGH 2 OF EN 60079-1/IEC
60079-1. TEMPERATURE OPERATED SWITCHES ARE TO
BE MARKED WITH AN “X” AND THE DIMENSIONS OF THE
FLAMEPROOF JOINTS ARE AS FOLLOWS:
120’s
• Activation Plunger to adjustment screw hole
gap joints:
1.140 in/28.96 mm min length by
0.0039 in/0.099 mm max annular gap
• Plunger Guide to enclosure through threaded
joints:
minimum 8 ½ fully engaged threads
• Cover to enclosure through threaded joints:
minimum 7 ½ fully engaged threads
121’s & 122’s
• Activation Plunger to enclosure through hole
gap joints:
1.00 in/25.40 mm min length by
0.0030 in/0.076 mm max annular gap
• Adjustment shaft to shaft through hole gap
joints:
1.050 in/26.67 mm min. length by 0.0035
in/0.089 mm max. annular gap
• Cover to enclosure through threaded joints:
minimum 7 ½ fully engaged threads
ATEX AND IEC SPECIFIC CONDITIONS OF USE:
ENCLOSURE CONTAINS ALUMINUM. CARE MUST BE
TAKEN TO AVOID IGNITION HAZARD DUE TO IMPACT
OR FRICTION.
MAX. TEMPERATURE* LIMITS LISTED ON NAMEPLATE
MUST NEVER BE EXCEEDED, EVEN BY SURGES IN THE
SYSTEM. OCCASIONAL OPERATION OF UNIT UP TO
MAX. TEMPERATURE IS ACCEPTABLE, E.G., START-UP
AND TESTING. EXCESSIVE CYCLING AT MAXIMUM
TEMPERATURE LIMIT COULD REDUCE SENSOR LIFE.
CONTINUOUS OPERATION SHOULD NOT EXCEED THE
DESIGNATED ADJUSTABLE TEMPERATURE RANGE.
* Maximum Temperature - the highest temperature to which a
sensing element may be occasionally operated without adversely
aff ecting set point calibration and repeatability.
THIS PRODUCT DOES NOT HAVE ANY FIELD
REPLACEABLE PARTS. ANY SUBSTITUTION OF
COMPONENTS WILL INVALIDATE THIRD-PARTY ISSUED
APPROVALS AND CERTIFICATIONS, AND MAY IMPAIR
SUITABILITY FOR CLASS I, DIVISION 1 LOCATION.
120 Series
Explosion-Proof Temperature and Indicating Temperature Switches
and Controls
Local Mount Types B121, B122, C120
Remote Mount Types E121, E122, F120; 820E, 822E
Installation and Operation Instructions
Please read all instructional literature carefully and thoroughly before starting.
Refer to the final page for the Warranty.
