Kobold PSE series, Operating Instructions Manual

Page: 13 / 35

PSR/PSE
PSR/PSE K23/0322 page 13
8. Electrical Connection

Ensure that the electrical supply lines are powerless.

Connect the connection cable with your supply cable.

The contact housing is made of glass-fibre reinforced plastic.
It is insulated in accordance with VDI 0720 Class II; separate
insulation measures are not necessary.
After connecting the external equipment, the instrument
is ready for operation.
9. Limit Switches
The instrument is supplied with an adjustable contact. The standard contact,
depending on the adjustments can be used either as N/O or N/C switch. The
instrument is supplied ex works as a normally open contact. Optionally, the
PSR/PSE can be ordered with an SPDT switch.
Contact mode
Depending on the positioning of the adjustable standard switch, the following
contact modes are available.

Normally open
The contact closes when the flow increases and the set point value is reached
or exceeded. The switch opens again with falling flow at the minimum value
based on the switch hysteresis.

Normally closed
The contact opens when the flow increases and the set point value is reached
or exceeded. The switch closes again with falling flow at the minimum value
based on the switch hysteresis.

Option: Changeover (SPDT) contact
The normally open and normally closed switch modes are simultaneously
available from the same position. When retrofitting the standard design with an
SPDT switch, the upper switch housing must be replaced at the same time.
brown
black
red