Barksdale L2H - Manual (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.
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
Approximate hysteresis of different types of micro switches Order code
[°F] GH, H J M S
adjustable
from
G*
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
* can be reset
IMPORTANT
The values given are for use in liquids. For gaseous media hysteresis will be approx. double the values.
15 2