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1
Intended Applications
The dual pressure switch monitors system differential pressure and has up to two switching outputs
and one analog output.
DANGER
The switch may only be used in the specified fields of application.
The temperature ranges must be within the permissible limits. Do not exceed rated pressure and
electrical load values.
Observe also the applicable national and local safety instructions for assembly, commissioning
and operation of the switch.
The switch is not designed to be used as the only safety device in pressurized systems according
to "Pressure Equipment Directive 97/23/EC (PED)".
2
Safety Instructions
The safety instructions are intended to protect the user from dangerous situations and/or prevent
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 users.
Nonobservance may result in fatal injuries.
WARNING
Refers to a recognizable danger.
Nonobservance may result in fatal injuries, and destroy the equipment or plant parts.
CAUTION
Refers to a danger.
Nonobservance may result in light injuries and material damage to the switch and/or to the plant.
IMPORTANT
Refers to important information essential to the user.
Disposal
The switch must be disposed of correctly in accordance with the national or local
regulations for electric/electronic equipment.
The switch must not be disposed of with the household trash!
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3
Standards
The standards applied during development, manufacture and configuration are listed in the
CE conformity and manufacturer's declaration.
4
Warranty/Guarantee
Our scope of delivery and services is governed by the legal warranties and warranty periods.
Terms of guarantee
We guaranty for function and material of the dual pressure switch under normal operating and
maintenance conditions in accordance with the statutory provisions.
Loss of guarantee
The agreed guarantee period will expire in case of:
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.
See also Barksdale "Standard Terms and Conditions"
5
Installation
CAUTION
Jolts and heavy vibrations must be avoided during transport. Even if the switch casing remains
undamaged, inside parts may be damaged and cause malfunctions.
The pressure switch may only be installed and electrically connected by instructed staff.
DANGER
The switch may only be installed in systems where the maximum pressure P
(see type label).
Only install the switch when deenergized (electrically and hydraulically/pneumatically).
Ensure that the high side of the pressure is installed with respect to the high pressure port.
Incorrect installation could result in damage to the sensor, equipment, and potential injury. High
pressure on low pressure port will result in damage to the sensor.
Install the pressure switch to each fitting using a wrench 22mm or 7/8.
is not exceeded
max
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