Programmable Head Transmitter
with Radio Transmission
Brief description
The Wtrans B head transmitter with wireless data transmission is used in connection with a
Wtrans receiver unit for stationary or mobile temperature measuring with RTD temperature
probes or thermocouples. Alternatively, resistors with an ohmic-value of up to 10 kΩ, voltages up
to 50 mV, and currents up to 20 mA that use an external shunt are measurable. Customer-specific linearizations are possible.
The measured values are transmitted wirelessly to the receiver of the Wtrans measuring system.
These values are shown on the receiver's LCD display and are digitally available on the RS485interface or as analog output(s). Optionally, different alarm types can be indicated with the two
relay outputs.
This head transmitter is designed for industrial applications – it is made up of the transmitter with
an integrated transmission unit and an antenna-battery case. The transmitter is designed to be
installed into type B terminal heads and works in an ambient temperature range from -30 to
85 °C. It is possible to install the transmitter into customer-specific terminal heads. The antennabattery case is connected to the terminal head through a screw connection (M20 × 1.5).
The transmission frequency of the Wtrans measuring system is 868.4 MHz. This frequency is unaffected for the most part by external interferences and it allows for transmissions even in a rough
industrial environment. When using the antenna wall-holder with the 3 m antenna line for the receiver then the maximum open-air range is 300 m.
A 3.6 V, 2.2 Ah (size AA) lithium battery is used as a power supply for the transmitter. For the
easy configuration and parameterization of the head transmitter and the Wtrans receiver on a PC
an optional setup program is available. Additionally, measured values can be recorded on the PC
with the online-chart function.
Data Sheet 707060
Seite 1/10
Block diagram
2011-09-30/00532898
Special features
• Transmission frequency: 868.4 MHz
• Measuring input for RTD temperature
probe, thermocouple, potentiometer and
voltage
• Configurable probe ID
• Battery status monitoring
• Easy battery change
• Configurable via setup program
• Customer-specific linearization (value pairs
in tables or fourth order number), can be
configured on the receiver
• Online chart of the measured values via setup program and receiver
Operating lifeApprox. 1 year with the factory-set values (transmission interval = 15 s) and at room
temperature (brief transmission interval and high or low ambient temperature reduce
the battery operating life)
Battery changeOnly use the lithium battery available as an accessory
Environmental influences
Transmitter in the B head with antenna-battery case
Ambient temperature range-30 to +85 °C
Storage temperature range / storage humidity-40 to +85 °C / relative humidity ≤ 95 %
Temperature influence
Thermocouple≤ ± 0.005 % / K deviation from 22 °C plus accuracy of the cold junction
RTD temperature probe≤ ± 0.005 % / K deviation from 22 °C
Resistance / potentiometer≤ ± 0.01 % / K deviation from 22 °C
Resistance transmitter≤ ± 0.01 % / K deviation from 22 °C
Voltage≤ ± 0.005 % / K deviation from 22 °C
Climate class10 cycles at 10 °C / 80 °C, according to IEC 68-2-30,
Vibration resistanceAccording to GL characteristic line 2
Admissible mechanical shock resistance10 g / 6 ms, according to DIN IEC 68-2.29
Electromagnetic compatibility (EMC)According to DIN EN 61326-1
Interference emissionClass B
Interference immunityIndustrial requirements
Radio frequency spectrumETSI EN 300 220-1 (V 2.3.1) and ETSI EN 300 220-2 (V 2.3.1)
a
All accuracy values in % refer to the maximum measuring range.
(3)Cable guide for antenna cable and voltage supply(9)Seal
(4)Probe connection(10)Lock nut
(5)Setup connector(11)Battery lid screw
(6)Mounting holes for installation in the terminal head, form B
Connection diagram
The connection diagram included in the data sheet provides initial information about the connection options. Only use the installation instructions
or the operating manual for the electrical connection. The know-how and the correct technical implementation of the safety warnings/instructions
contained in these documents are the prerequisite for the installation, electrical connection, and initial start as well as for the safety during operation.
Voltage supply
ConnectionConnectorTerminalsSymbol and terminal designation
JUMO Wtrans B
programmable head transmitter with radio transmission
(2) Input
8Standard, with factory settings
9Customized programming according to specification
a
(3) Output (probe)
10Transmission frequency 868.4 MHz (Europe)
(4) Extra codes
000None
a
Please specify the probe ID, transmission interval, measuring range, and, if required, the probe type in plain text.
(1)(2)(3)(4)
Order code/-/
Order example707060/8-10/000
Delivery package
1 transmitter in the ordered version (without terminal head form B) inc. mounting parts (2 screws and 2 compression springs)
1 antenna-battery case with reverse battery protection connection cables
1 lithium battery 3.6 V, 2.2 Ah (size AA) already inserted in the antenna-battery case ready for use
1 operating manual B707060.0
Accessories
ArticlePart no.:
Lithium battery 3.6 V, 2.2 Ah (size AA)70/00547559
PC interface with USB/TTL converter, adapter (socket connector), and adapter (pins)70/00456352
PC interface with TTL/RS232 converter and adapter (socket connector)70/00350260
Setup program on CD-ROM, multilingual70/00488887
Setup program including OnlineChart on CD-ROM, multilingual70/00549067
Activation for OnlineChart 70/00549188
Precision-resistor type 2.5 R / 0.1 % (shunt)70/00555645
2011-09-30/00532898
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