BUSCH RA 0025 F Manuel D'installation Et De Service page 35

Resistance thermometer Pt-100
with and without neck tube, with changeable measuring insert
with terminals or built in Pt-100 transmitter Pt-100
BA0404
The resistance thermometer PTX consists on a measuring insert with a protection tube and a connection housing.
The protection tube is fixed at the process connection. Process connection and connection housing can be separated from
each other by a neck tube. At the measuring insert a temperature transmitter or a connection socket can be mounted.
Protection tube
Outside diameter:
Reduced tip:
Material:
Length:
Surface quality:
Process connection
Variants:
Material:
Neck tube
Outside diameter:
Length:
Connection housing
Material:
Protection type:
Connection cable:
Interior:
Environmental temperature:
Measuring insert
Material:
Outside diameter:
Length:
Dielectric strength:
Sensor element:
ACS-CONTROL-SYSTEM GmbH
RA 0025 - 0100 F Version ATEX Cat. 2 G & Cat. 2(i) G
0870139669 / 100311
Installation and operating instructions
Construction of the resistance thermometer PTX
the protection tube is the separation point between medium and measuring insert.
8 mm, 10 mm, 12 mm, others on inquiry
diameter 8 mm, length 40 mm (only for protection tube with diameter 10 mm or 12 mm)
steel 1.4571, wall thickness 1mm, other materials on inquiry
free selectable
surface roughness R < 0,8µm
a
the process connection facilitates the connection of the resistance thermometer Pt-100 to
the facility part, that contains the medium that should be measured.
screw in thread G ½" or G 1", DIN-flange DN 25 or DN 50, without process connection
others on inquiry
steel 1.4404, other materials on inquiry
the neck tube is used to decouple the temperatures between medium and connection
housing in order to reduce the temperature at the connection housing.
10 mm, on inquiry also 16 mm (at strong vibrations of the application system)
free selectable
the connection housing connects the temperature measurement resistor resp. resistors
Pt-100 with a post-connected evaluation electronic.
steel 1.4404, lacquered aluminum, plastic POM or PP, others on inquiry
In areas with explosive dust / air – mixtures only the connection housings steel or lacquered
aluminum are permitted.
IP67 (connection sensor to connection housing / connection housing / cable gland)
The built-in cable gland is suitable for the installation of cables with a diameter between
3 and 7 mm.
suitable for the installation of connection sockets or transmitters that are suitable for
installing into housings of form B according to DIN 43729.
material steel and lacquered aluminum
material POM
material PP
the measuring insert represents the real temperature sensor.
The sensor element Pt-100 is placed in th e tip of the measuring insert.
steel 1.4571
5 mm
is determined by protection tube length, process connection and neck tube length
Pt-100 against measuring insert tube resp. Pt-100 against Pt-100:
thin-film - Pt-100 or wire-wound Pt-100
2-wire- resp. 3-wire- resp. 4-wire-connection
single or dual Pt-100 (dual Pt-100 only as thin-film resp. with 2-wire-connection)
–
Lauterbachstraße 57 – 84307 Eggenfelden – Tel. (08721)9668-0
Fax. (08721)966830 – Email:
The length of the neck tube can affect the temperature inside
the connection housing (see scheme beside).
This temperature must be kept inside the permitted
environmental temperature of the connection housing. For
specifying the permitted environmental temperature in the
area of the connection housing when using a transmitter that
is built into the connection housing the permitted
environmental temperature of the transmitter must also be
observed.
For the available standard ACS transmitter
(Ex KTM _A0 resp. UTN-500 resp. PTN-600) this
temperature is between -40...+85°C.
The graphic besides is only a approximately guide, because
the real heating of the connection housing depends on
various additionally factors (e.g. pipe isolation, position, neck
tube thickness, etc.).
-40°C...+130°C
-25°C...+100°C
-15°C...+100°C
info@acs-controlsystem.de
www.acs-controlsystem.de
Internet:
Documentation sur l'équipement de mesure et de sécurité
PTX
page 3 of 8
500 V ac
page 35