KROHNE OPTITEMP TRA-TCA EN - Manual (Page 10)

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DEVICE DESCRIPTION
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OPTITEMP TRA/TCA
www.krohne.com 08/2010 - 4000630501 - MA OPTITEMP TRA/TCA R01 en
OPTITEMP thermometers consist of a thermowell with a process connection and a connection
head. There are versions in which the connection head and the thermowell are thermally
decoupled by way of a neck tube.
All of the manufacturer's thermowells and neck tubes feature an M24 x 1.5 thread to screw into
the connection head. This connection head thread makes it possible to align the connection head
so that the cable entry point always faces the desired direction (during assembly, the connection
head is aligned first before screwing in the thread using the hex nut).
The thermowell contains either a measuring insert with a resistance thermometer
(OPTITEMP TR 100) or with a thermocouple (OPTITEMP TC 100). Both measuring inserts are
available in three different versions and the manufacturer also offers three different thermowell
tips.
2.2.2 Types of connection heads
Connection heads protect the terminals and the temperature transmitter from environmental
influences (e. g. dirt and dust). They have an M20 x 1.5 thread at the cable entry. The covers
feature oil-resistant rubber seals (can be used up to 100°C ambient temperature). The
connection heads are available in the following materials:
• Die-cast aluminium for standard applications (Types: BA, BUZ-T/S/H/HW, BGK and AXD)
• Stainless steel (type BVA), especially for the pharmaceutical and food and beverage
industries
• Plastic (type BBK)
Type "BUZ-HW" is the only connection head with a display, type "AXD" is in an explosion-proof
enclosure.
INFORMATION!
The inside dimensions of the connection heads depicted here comply with DIN 43735-2.
.book Page 10 Tuesday, August 17, 2010 12:18 PM