WIKA TR25 - Handbuch (Seite 9)

WIKA operating instructions model TR25 (Ex i)
14073045.01 10/2013 GB/D
9
GB
Explanation of symbols
Before mounting and commissioning the instrument, ensure you read the
operating instructions!
CE, Communauté Européenne
Instruments bearing this mark comply with the relevant European directives.
ATEX European Explosion Protection Directive
(Atmosphère = AT, explosible = EX)
Instruments bearing this mark comply with the requirements of the European directive
94/9/EC (ATEX) on explosion protection.
3. Specifications
Specifications Model TR25
Temperature range Measuring range -50 ... +150 °C
Measuring element Pt100 (measurement current: 0.1 ... 1.0 mA)
Sensor connection method 3-wire
4-wire
Sensor tolerance value
per DIN EN 60751
Class B
Class A
Materials
■ Wetted parts
■ Neck tube
■ Tubular body
■ Sealing (option)
Stainless steel 1.4435, 316L
Stainless steel
Stainless steel 1.4435, 316L
NBR, PTFE or EPDM
Surfaces Standard: R
a
≤ 0.76 µm
Option: R
a
≤ 0.38 µm
In addition, the wetted surfaces can be electropolished.
Standard neck length 50 mm
Standard neck tube diameter 12 mm
Process connections Connection for pipes per DIN 11866 row A, B, C
Clamp per DIN 32676
Threaded connection per DIN 11851
Threaded connection per DIN 11864-1 form A
Threaded connection NEUMO BioConnect ®
Threaded connection SMS
Permissible ambient temperature
■ without transmitter
■ with transmitter
-40 ... +85 °C
see operating instructions of the transmitter in question
2. Safety / 3. Specifications