Barksdale L2H User Manual
ATEX Type Certification marking for type L1X-EX, T1X-EX, T2X-EX
Type of protection "d" explosion-proof enclosur e
Approval:
Certificate no.: ISSEP08ATE024X
Standards applied: IEC 60079-0, IEC60079-1, IEC 61241-0 and
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 Haz ardous 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 Ordi nary 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.
II 2 G D
Ex d IIC T6
Ex tD A21 IP65 T80°C
-40°C <
Tamb < +75°C
IEC 61241-1
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
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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
1
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.
DANGER
The switch may only be used in the specified fields of application (see type label).
The temperature has to be within the specified ranges, the pressure values and the electrical
rating must not exceed the values specified.
Observe also the applicable national safety instructions for assembly, commissioning and
operation of the switch.
The switch is not designed to be used as the only safety relevant element in pressurized systems
according to DGR 97/23/EC.
2 Safety Instructions
The safety instructions are intended to protect the user from dangerous situations and/or material
damage.
In the operating instructions the seriousness of the potential risk is designated by the following
signal words:
DANGER
Refers to imminent danger to men.
Non-observance may result in fatal injuries.
WARNING
Refers to a recognizable danger.
Non-observance may result in fatal injuries, and destroy the equipment or plant parts.
CAUTION
Refers to a danger.
Non-observance may result in light injuries and material damage to the equipment and/or to the
plant.
Local mount temperature switches
Measuring Ranges
Max. temperature at sensor Adjustment range Order code
[°F] [°F]
201 -100… +250 -49… +75.2
202 -100… +250 15.8… +140
203 -100… +250 75.2… +200
351 -100… +401 100…+244.6
204 -100… +200 -49… +200
354 -100… +401 100…+350.6
454 -0.4… +500 150.8…+449.6
Reset values
Adjustment
range
[°F] GH, H J M S
201…354 -49…+350.6 1 – 2.8 2.2 - 4 1 - 4 6 - 20 5.0
454 150.8…+449.6 2.8 - 6 2.8 - 5 4 - 6.8 10 - 30 5.0
Approximate hysteresis of different types of micro switches Order code
adjustable
from
G*
* can be reset
IMPORTANT
The values given are for use in liquids. For gaseous media hysteresis will be approx. double the values.
2
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Measuring Ranges
Max. temperature at sensor Adjustment range Order code
[°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
Temperature switch with remote sensor
Reset values
Adjustment
range
[°F] GH, H J M S
154 -49… +151 1 - 2 1 – 3.4 1 - 4 4 – 14.7 5.0
251 50… +250 1 - 2 1 – 3.4 1 - 4 4 – 14.7 5.0
351 151… +350 1 - 2 1 – 3.4 1 - 4 4 – 14.7 5.0
601…603 -0.4… +600 2 - 4 2.8 - 5 4 - 6 6.8 - 24.8 5.0
Approximate hysteresis of different types of micro switches Order code
adjustable
from to
G*
* can be reset
IMPORTANT
The values given are for use in liquids. For gaseous media hysteresis will be approx. double the values.
IMPORTANT
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.
The equipment must not be disposed of with the household garbage!
3 Standards
The standards applied during development, manufacture and configuration are listed in the CE
conformity and manufacturer's declaration.
4 Warranty/Guaranty
Warranty
Our scope of delivery and services is governed by the legal warranties and warranty periods.
Terms of guaranty
We guaranty for function and material of the single / dual temperature switch under normal
operating and maintenance conditions in accordance with the statutory provisions.
Loss of guaranty
The agreed guaranty period will expire in case of:
• changes or modifications to the housing/switch/fitting
• incorrect use,
• incorrect installation or
• incorrect handling or operation contrary to the provisions of these operating instructions.
No liability is assumed for any damage resulting therefrom, or any consequential damage.
5 Transport/Storage
CAUTION
Severe shock and vibrations should be avoided during transport. Storage should be dry and
clean.
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