Instruction Manual

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ATEX Type Certification marking for type L1X-EX, T1X-EX, T2X-EX

Type of protection "d" explosion-proof enclosure

Approval:

II 2 G D

Ex d IIC T6

Ex tD A21 IP65 T80°C

-40°C <

Tamb < +75°C

Certificate no.: ISSEP08ATE024X

Standards applied: IEC 60079-0, IEC60079-1, IEC 61241-0 and

IEC 61241-1

L1X, T1X, T2X Models are UL (File No. E58658, Guide No. XBDV) & CSA (File No.

LR34556, Guide 400-E, Class 4868) are Listed as Temperature Indicating and Regulating

Equipment for use in Hazardous Locations, as follows;

Class I, Groups B (UL Only), C & D, Class II, Groups E, F & G, Class III.

ML1H, MT1H, L2H, T2H Models are UL (File No. E56247) & CSA (File No. LR34555,

Guide 400-E-O, Class 4813) are Listed as Temperature Indicating and Regulating

Equipment for use in Ordinary Locations.

Operating life time

The switches are designed for an operating life time of at least 1 million cycles when used

under normal design criteria.

Operating Instructions Mechanical Temperature Switches

ML1H,MT1H,L2H,T2H,L1X/L1X-EX,T1X/T1X-EX,T2X/T2X-EX

1 Intended Applications....................................................................................................2

2 Safety Instructions .........................................................................................................2

3 Standards........................................................................................................................3

4 Warranty/Guaranty .........................................................................................................3

5 Transport/Storage ..........................................................................................................3

6 Installation/Commissioning...........................................................................................4

7 Maintenance/Cleaning....................................................................................................8

8 Technical Data ................................................................................................................8

Barksdale, Inc.

3211 Fruitland, Ave.

Los Angeles, CA 90058

Phone: 800 835-1060

Fax: 323 589-3463

email: sales@barksdale.com

Internet: www.barksdale.com

Bulletin No. 272182-E

Date: 07-20-2009

Specifications are subject to changes

without notice!

Summary of content (8 pages)

PAGE 1
ATEX Type Certification marking for type L1X-EX, T1X-EX, T2X-EX Type of protection "d" explosion-proof enclosure Approval: II 2 G D Ex d IIC T6 Ex tD A21 IP65 T80°C -40°C < Tamb < +75°C Certificate no.: ISSEP08ATE024X Standards applied: IEC 60079-0, IEC60079-1, IEC 61241-0 and IEC 61241-1 Operating Instructions Mechanical Temperature Switches ML1H,MT1H,L2H,T2H,L1X/L1X-EX,T1X/T1X-EX,T2X/T2X-EX L1X, T1X, T2X Models are UL (File No. E58658, Guide No. XBDV) & CSA (File No.
PAGE 2
1 Intended Applications The temperature switches are specifically applied for monitoring and controlling of operations using maximum or minimum temperatures. A micro switch triggers an electrical signal when minimum or maximum temperatures are reached. Local mount temperature switches Measuring Ranges Order code Max. temperature at sensor Adjustment range [°F] [°F] DANGER The switch may only be used in the specified fields of application (see type label). 201 -100… +250 -49… +75.
PAGE 3
Measuring Ranges Order code IMPORTANT Max. temperature at sensor Adjustment range [°F] [°F] 154 -100… +200 -49… +151 251 -100… +300 50… +250 351 -100… +401 151… +350 601 -0.4… +650 300… +440 603 -0.4… +650 320… +600 Refers to important information essential to the user. Disposal The equipment must be disposed of correctly in accordance with the local regulations for electric/electronic equipment.
PAGE 4
6 Installation/Commissioning DANGER Electrical Ratings Micro switch Special Characteristics H Micro switch with silver contacts M Micro switch with silver contacts GH Micro switch with gold plated contacts for low voltage and low current Volt AC 50/60 Hz Ind. Load A Res. Load A 125 250 480 10 10 3 10 10 3 125 250 480 10 10 3 125 Only install or uninstall the switch when de-energized (electrically and hydraulically/pneumatically).
PAGE 5
Adjustment knob High circuit S2 Contact Protection The micro switches used are normally suitable for both direct and alternating current operation. Inductive, capacitive and lamp loads may, however, considerably reduce the life expectancy of a micro switch and, under extreme circumstances, even damage the contacts. Adjustment knob Low circuit S1 Depending on the application spark suppression and current limiting is recommended (see succeeding figures). ¾“ NPT 22 (0.87) 51 (2.01) MS 102 (4.
PAGE 6
4 (0.16) Set point adjustment 36.5 (1.44) In temperature switches, the liquid expands in the sensing element (capillary) when the temperature changes. Due to the expansion the micro switch is actuated. Upon delivery of the product, the set points are likely to be found in the middle of the adjustable range. On request, fix set points may be adjusted by our factory. In this event, the point will be indicated on the type plate or any separate plate, i = increasing, d = decreasing.
PAGE 7
Adjustment knob under cover 28.6 (1.13) 46 (1.81) Adjustment knob under cover Ground screw (internal) 136 (5.35) * IMPORTANT 36.5 (1.44) ½“ NPT conduit connection Mounting holes ø7.1 x 2 ** Mounting holes ø7.1 x 2 51 (2.008) Wiring Code for all Types (Contact status at atm. pressure) 113 (4.45) 51 (2.008) 63.5 (2.5) 161 (6.34) ø4.75 (0.11) Contacts: color code and function 6.4 (0.25) Terminal strip for three connections C NO NC 25.4 mm (1.0 inch) min. required to remove the cover.
PAGE 8
7 Maintenance/Cleaning ¾“ NPT with cable gland cable diameter 6…12 mm 95 (3.74) 39.5 (1.56) 48.5 (1.91) 28 (1.1) ø9.5 (0.37) Fig. 1: 8 Option adjustable hysteresis (RD) Temperature switch type MT1H-… 102(4.016) 113 (4.45) 115 (4.53) ø4.75 (0.11) ø2.4 (0.09) Contacts: color code and function Lower contacts Upper contacts C = Common = purple C = brown NC = Normally Closed Contact = blue NC = orange NO = Normally Open Contact = red NO = yellow ø4.75 (0.11) 72 (2.