WIKA T24.10 User manual

Temperatur - Transmitter
Typ T24.10
Operating Instructions
Betriebsanleitung
GB
D
Temperature Transmitter Model T24.10
Temperatur-Transmitter Typ T24.10

2WIKA Operating instructions temperature transmitter Model T24.10
2370242.06 02/2006 GB/D/E
GB
D
Operating instructions Model T24.10 Page 1-24
Betriebsanleitung Typ T24.10 Seite 25-45

3WIKA Operating instructions temperature transmitter Model T24.10
2370242.06 02/2006 GB/D/E
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Contents
Contents
Contents
1. General information 4
2. Safety instructions 4
3. Intended use 5
4. Mounting 7
5. Electrical connections 8
6. Notes for mounting and operating in
hazardous areas (Europe) 10
7. Further country-specific approvals 14
8. Notes for application of T24 in the
shipbuilding industry 14
9. Configuration 16
10. Connection of the programming unit
PU348 18
11. T24 configuration software WIKA_TT 19
12. Troubleshooting 21
13. Maintenance 22
14. Disposal 22
15. FM installation drawing 23
16. Declaration of conformity 24

4WIKA Operating instructions temperature transmitter Model T24.10
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1. General information / 2. Safety instructions
1. General information
WIKA temperature transmitters are carefully designed and
manufactured using state-of-the-art technology. Every component
undergoes strict quality inspection before assembly and each
instrument is fully tested prior to shipment.
Note
Please inspect the equipment for possible damage during
transportation. Should there be any obvious damage, please inform
the transport company and WIKA without delay.
The following installation and operating instructions have been
compiled by us with great care but it is not feasible to take all
possible applications into consideration.
If questions remain regarding a specific application, you can obtain
further information (data sheets, instructions, etc.) via our Internet
address (www.wika.de / www.wika.com / download) or contact
WIKA for additional technical support. (see section 13, Service)
2. Safety instructions
When mounting, starting and operating these
transmitters it is important to observe the respective
national safety precautions and regulations in effect
(e.g. VDE 100).
Serious injuries and/or damage can occur should the relevant
regulations not be observed. Only qualified persons authorised by
the plant manager are permitted to install and service these
transmitters.
When working on the terminals of the T24.10 while the process is
running it is recommended to take appropriate measures to avoid

5WIKA Operating instructions temperature transmitter Model T24.10
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any electrostatic discharge, because discharges may result in
temporary falsifications of the measured value. When mounting a
T24.10 transmitter into a field case separately from the temperature
sensor (transmitter mounted outside of the connection head of a
thermometer) it is recommended to use connection cables with
shielding between sensor and transmitter and to connect the
shielding to earth on one side.
If the instrument should become damaged or unsafe for operation, it
should be removed from service and marked to prevent it from being
used again accidentally.
We draw your attention to the following which must be observed for
transmitters with Ex protection:
1. Observe the applicable regulations for the use of Ex-class
instruments (e.g.: EN 50 014, EN 50 020, EN 50 021, EN 50 284).
2. Observe the notes for mounting and operating in hazardous area
described in section 6.
3. It is forbidden to use a transmitter that is damaged externally.
4. Repairs may be performed by the manufacturer only. The
instrument must not be interfered with or changed in any way.
5. During configuration the transmitter, the programming unit
PU348 and PC must not be located in the hazardous area
3. Intended use
The instrument is a universal, configurable transmitter for resistance
thermometers (RTD) and resistance and calibration sources.
The transmitter meets the requirements on
Texplosion protection (depending on the version)
Tsignalling at the analogue output according to NAMUR
recommendation NE 43
Before initial operation check the suitability for the intended
application.
2. Safety instructions / 3. Intended use

6WIKA Operating instructions temperature transmitter Model T24.10
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3.1 Functional description
The analogue temperature transmitter serves for the conversion of a
resistance value into a proportional current signal (4-20 mA). The
analogue signal is transmitted to a series-connected logic unit, e.g. an
SPS or an alarm contact, where it is monitored for upper deviations
from a maximum value or lower deviations from a minimum value.
For failure monitoring the logic unit has to be capable of recognising
HI alarms (> 21 mA) as well as LO alarms (< 3.6 mA). The electrical
components of the transmitter are arranged in a plastic case and
completely encapsulated. Due to the internal analogue signal proces-
sing these transmitters can also be used in multiplexed systems.
The transmitters described in these operating instructions feature an
internal conductive connection between the sensor input and the
analogue output. There must not be any conductive connection (e.g.
via earth) between the connected sensor and the analogue output!
3. Intended use
3.2 Ambient conditions
T24.10.***
Ambient/
storage temperature
Standard range: -40 ... +85 °C
Extended range: -40 ... +105 °C 1)
Climate class: Cx (-40 … +85 °C, 5 % to 95 % rel. air humidity)
DIN EN 60 654-1
max. permissible 100 % relative humidity (unlimited with insulated
humidity sensor connection wires), moisture condensation
permissible DIN IEC 68-2-30 Var. 2
Vibration 10 … 2000 Hz 10 g DIN IEC 68-2-6
Shock DIN IEC 68-2-27
Salt mist DIN IEC 68-2-11
Case material plastic, PBT, glass fibre reinforced
Case ingress protection IP 66 / IP 67 IEC 529 / EN 60 529
Terminals ingress prot. IP 00 IEC 529 / EN 60 529
1) without explosion protection
For further technical details please refer to WIKA data sheet TE 24.01

7WIKA Operating instructions temperature transmitter Model T24.10
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4.1 Mounting on the measuring insert
Mount the transmitter on the circular plate of the measuring insert
using two countersunk head M3 screws per DIN EN ISO 2009.
Appropriate threaded inserts have been press-fitted in the underside
of the case. Assuming the countersinking is carried out correctly, the
permissible screw length can be calculated as follows:
Circular plate
lmax. = s + 4 mm
with
l max. Length of screw in mm
s Thickness of circular
plate in mm
Check the screw length before affixing the transmitter to the
measuring insert: stick the screw in the circular plate and verify
additional length of 4 mm!
Do not exceed the maximum permissible
screw length! The transmitter will be damaged if the
screws are screwed further than 4 mm into the bottom
of the transmitter.
2476890.A1
4. Mounting
3173765.B
4. Mounting
The transmitters for head mounting are designed to be mounted on
a measuring insert in a DIN connection head, form B. The connection
wires of the measuring insert must be approx. 40 mm long and
insulated.

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Please observe the safety-relevant maximum values
for the connection of the voltage supply and the
sensors specified in sections 6.3.1 and 6.3.2.
5.1 General
For any work on the transmitters (e.g. assembly / disassembly)
it is recommended to take measures, which prevent electrostatic
discharge to the terminals.
5. Electrical connections
Input 4 ... 20 mA - loop
2476890.B1
4. Mounting / 5. Electrical connections
Recommended tools for terminal screws:
Pozidriv screw driver size 2 (ISO 8764).
max. tightening torque 0.4 Nm
4.2 Mounting in connection head
Insert the measuring insert with the mounted transmitter in the protec-
tive sheath and affix in the connecting head using screws in pressure
springs.

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5. Electrical connections
5.2 Power supply / 4 ... 20 mA-loop
The T24 is a temperature transmitter in 2-wire design. Depending on
the version, it can be supplied with different types of power supply.
Connect the plus pole of the power supply to the terminal marked
with j, the minus pole to the power supply marked with i. In the
case of flexible leads we recommend the use of crimped connector
sleeves.
The T24 temperature transmitter requires a minimum terminal
voltage of 10 V DC. The load must not be too high, because
otherwise the terminal voltage at the transmitter will be too low in the
case of relatively high currents.
The following diagram shows the maximum permissible load in
dependence on the supply voltage.
Load diagram
load
RA
in Ω
voltage UB in V EEx ia EEx nL/nA
5.3 Connect sensor
It is possible to connect an RTD resistance thermometer (e.g. to DIN
EN 60 751 or similar) in a 2- or 3-wire connection method. Configure
the input of the transmitter in accordance with the actual method of

10 WIKA Operating instructions temperature transmitter Model T24.10
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5. Electrical connections / 6. Notes for mounting ...
connection used.
Otherwise you will not fully exploit the possibilities of connection
lead compensation and, as a result, possibly cause additional
measuring errors (see section 9. Configuration).
If 2 wire connecting method is used: Set a jumper between the input
terminals @and A. Otherwise the transmitter signals a sensor
burnout and sets the output signal < 3.6 mA or > 21.0 mA,
dependent on configuration.
Head Explosion Approval No. Type of ignition
mounting protection protection
T24.10.**2 II 1G EEx ia IIB/IIC T4/T5/T6 intrinsically safe
DMT 02 ATEX E 025 X equipment
T24.10.**9 II 3G EEx nL/nA IIC T4/T5/T6 X energy-limited
equipment and
non-incendive
equipment
6. Notes for mounting and operating in hazardous areas (Europe)
Use only such transmitters in a hazardous area that have the
corresponding approval for this hazardous area. The approval is
noted on the product label.
6.1 Type overview of the European approvals
6.2 Special conditions for safe use
T24.10.**2: Transmitters in a hazardous area are supplied only with
associated intrinsically safe apparatus that are approved for this
hazardous area. These transmitters must be mounted in a case that
must at least correspond to ingress protection IP 20 according to
EN 60 529 / IEC 529.