WIKA T31 Operating Instructions

Operating Instructions

Operating Instructions 1 Models
Temperature Transmitter Model T31 2 Safety warnings
1 Models
Head mounting
T31.10. 1P0 without
2 Safety warnings
When mounting, initiating and operating
these transmitters it is important to observe
the safety precautions and regulations
(e.g. IEC 60 364-6-61).
Nonobservance of the applicable regula-
tions may cause severe injury to persons
Contents or damage to equipment.
Only staff with suitable qualification should
1 Models
work with these transmitters.
2 Safety warnings
3 Mounting
We draw your attention to the following
which must be observed with transmitters
4 Electrical connections
with Ex protection:
5 Maintenance
Observe the applicable regulations for
the use of Ex-class instruments (e.g.:
6 Notes for mounting and
EN 50 014, EN 50 020, EN 50 021,
operating in hazardous area
EN 50 284).
7 Safety-engineering values
Observe the notes for mounting and
operating in hazardous area described
8 Declaration of conformity
in section 6 .
It is forbidden to use a transmitter that
Specifications according to WIKA
is damaged externally.
data sheet T E 31.01.
Repairs are forbidden.
Technical alteration rights observed.
Issue: May 2006
2294851.03 05/2006 D + GB T31
Alexander Wiegand GmbH & Co. KG
Alexander-Wiegand-Straße 30
Note
63911 Klingenberg / Germany
Before initial operation check the suitabil-
Phone ( +49) 93 72 / 132-0
ity for the intended application.
Fax ( +49) 93 72 / 132-406
In particular, it is important to fulfill the am-
E-Mail info@wika.de
bient and operation conditions as specified
www.wika.de in the WIKA data sheet TE 31.01 .
Temperature Transmitter Model T31
3 Mounting
3 Mounting
3.0 General
Ex protection
These transmitters are designed to be
mounted on a measuring insert in a DIN
connecting head with form B.
1P2 II 1G EEx ia
The connecting wires of the measuring in-
1P4 II 2G EEx ib
sert must be approx. 40 mm long and in-
1P9 II 3G EEx nL/ nA
sulated.
Mounting example:
3.1 Mounting on measuring insert 4
3.2 Mounting in connection head
4
3.1 Mounting on measuring insert
The transmitter can be mounted on the cir-
cular plate of the measuring insert using
two countersunk head M 3 screws per In the case of the transmitters described
DIN EN 2009 . here there is an internal galvanic connec-
Appropriate threaded inserts have been tion between the sensor input and ana-
press-fitted in the underside of the case. logue output.
Assuming the countersinking is carried out No external conducting is to be made (for
correctly, the permissible screw length can example, by earthing) between the con-
be calculated as follows: nected temperature sensor and analogue
output !
l = s + 4 mm
max.
Dimensions in mm:
l length of screw
max.
s thickness of circular plate 4.0
The transmitters have connecting terminals
for electrical connection.
We recommend the use of crimped con-
nector sleeves in the case of flexible leads.
Circular plate
4.1
Check the screw length before affixing the Set a jumper between the input terminals
transmitter to the measuring insert: and
nals a sensor burnout and sets the output
stick the screw in the circular plate
signal ≥ 22.5 mA.
and verify additional length of 4 mm !
WARNING
Input
Do not exceed the maximum allowable
screw length !
The transmitter will be demaged if the
screws are screwed further than 4 mm
into the bottom of the transmitter.
3.2 Mounting in connecton head 4.2
Insert the measuring insert with the
mounted transmitter in the protective
Input
sheath and affix in the connecting head
using screws in pressure springs.
Issue: May 2006
Electrical connections 4.3 Connect 4 ... 20 mA - loop
5 Maintenance
Electrical connections
4.3 Connect 4 ... 20 mA - loop
! ! ! Important ! ! ! The electrical connection is made
through the terminals
Load diagramm
The permissible load R
upon the loop power supply voltage U
925
625
0
0 11.5
General
voltage U
maximum permissible terminal voltage:
30 V
Input Pt100 2 wire
. Otherwise the transmitter sig-
maximum permissible load R
(dependent upon the loop power sup-
ply voltage U
925 Ω Ω Ω Ω Ω at
4 ... 20 mA -
loop
625 Ω Ω Ω Ω Ω at
≤ (U
R
A
with R
A
Input Pt100 3 wire
4 ... 20 mA -
5 Maintenance
loop
The temperature transmitters described
here are totally maintenance-free !
The electronics are completely encap-
sulated and incorporate no components
which could be repaired or replaced.
Page 1 of 2
j i
and .
dependent
A
.
B
20 24 30
in V
B
A
)
B
30 V power supply U
B
24 V power supply U
B
- 11.5 V ) / 0.02 A
B
in Ω
and U in V
B