EN
14073045.04 03/2019 EN/DE
WIKA operating instructions model TR25 (Ex i)
10
3. Specifications
Specifications
Model TR25
Temperature range
■
Class A
■
Class B
-30 ... +150 °C (-22 ... +302 °F)
-50 ... +150 °C (-58 ... +302 °F)
Sensor
■
Measuring element
(measuring current: 0.1 ... 1.0 mA)
■
Connection method
Pt100 (thin-film)
1 x 3-wire
1 x 4-wire
Class accuracy of the sensor
in accordance with IEC 60751
Class A
Class B
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
®
Permissible ambient temperature
■
without transmitter
■
with transmitter
-40 ... +80 °C
see operating instructions of the transmitter in question
Pressure equipment directive
■
For instruments with nominal widths of ≤ DN 25 (1"), an EU conformity evaluation in
accordance with the Pressure Equipment Directive (PED) is not permitted.
■
Instruments with nominal widths of ≤ DN 25 (1"), and thus without CE marking, should
be designed and manufactured in line with the applicable sound engineering practice
(PED article 4, chapter 3).
■
For instruments > DN 25 (1") and for the associated marking on the measuring
instrument or thermowell, WIKA confirms conformity with the Pressure Equipment
Directive in accordance with the conformity assessment procedure, module H.
For further specifications see WIKA data sheet TE 60.25 and the order documentation.
3. Specifications
