JUMO Wtrans B User manual

70706000T90Z001K000
V1.01/EN/00536757
JUMO Wtrans B
Programmable head transmitter
with wireless data transmission
Operating Manual

Contents
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Connection elements and connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.5 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.5.1 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.5.2 Antenna-battery housing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.6 Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2 Identifying the device version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1 Nameplate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 Order details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.3 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.4 Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3 Preparing the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Inserting/changing the battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Safety information concerning lithium batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.3 Battery operating life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.4 Disposal of lithium batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4 Transmission range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1 General information about wireless transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2 Possible impairment of radio transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1 Information about fastening, mounting, and arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.2 Installing the antenna-battery housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.3 Installing the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.4 Aligning the antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.1 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.2 Connection elements and connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.3 Connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.3.1 Voltage supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.3.2 Analog input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.3.3 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.3.4 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Contents
7 Setup program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.1 General information about the setup program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.2 Required hardware and software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.3 Establishing the connection between PC and transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7.4 Transmitter configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.4.1 Establishing the communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.4.2 Reading the current transmitter parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.4.3 Editing transmitter parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.4.4 Transmitting new parameters to the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.5 Parameter overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.1 Analog input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.2 Output (radio transmission). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.3 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.4 Environmental influences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8.5 Housing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9 China RoHS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

5
1 Introduction
1 Introduction
1.1 Safety information
General
This manual contains information that must be observed in the interest of your own safety and to avoid
material damage. This information is supported by symbols which are used in this manual as indicated.
Please read this manual before starting up the device. Store this manual in a place that is accessible to
all users at all times.
If difficulties occur during startup, please do not intervene in any way that could jeopardize your warranty
rights!
Warning symbols
CAUTION!
This symbol in connection with the signal word indicates that material damage or data loss will occur
if the respective precautionary measures are not taken.
Note symbols
NOTE!
This symbol refers to important information about the product, its handling, or additional benefits.
REFERENCE!
This symbol refers to additional information in other sections, chapters, or other manuals.

1 Introduction
6
1.2 Description
The Wtrans B head transmitter with wireless data transmission is used in conjunction with a Wtrans re-
ceiver for stationary or mobile acquisition of temperatures with RTD temperature probes or thermocou-
ples. Alternatively, resistances of up to 10 kΩ or voltages of up to 50 mV and up to 20 mA using external
shunt currents can be measured. Customer-specific linearization possible.
The measured values are transmitted wirelessly to the receiver of the Wtrans measuring system. The
measured values are displayed on the receiver and are available in digital format on the RS485 interface
and as analog outputs. Alternatively, different alarms can be signaled with two relay outputs.
This head transmitter, designed for industrial applications, comprises a transmitter with integrated trans-
mission unit and an antenna-battery housing. The transmitter is suitable for mounting in form B terminal
heads and has an ambient temperature range of -30 to +85°C. Installation in customer-specific terminal
heads is also possible. The antenna-battery housing is connected to the terminal head with a screw con-
nection (M20 × 1.5).
The radio frequency of the Wtrans measuring system is 868.4 MHz. This frequency is largely impervious
to external interference and allows data to be transmitted even in harsh industrial environments. When
using the antenna holder for wall mounting with the 3 m antenna cable for the receiver, the open air
range is 300 m.
A 3.6 V, 2.2 Ah (size AA) lithium battery is used for the head transmitter voltage supply.
A setup program is available as an accessory for easy configuration and parameterization of the head
transmitter and the Wtrans receiver on a laptop/PC. The OnlineChart function can be used optionally to
record the measured values on a PC.
1.3 Block diagram
Transmission unit
Radio frequency
868.4 MHz
Head transmitter
Voltage supply
Lithium battery
3.6 V, 2.2 Ah
Interface
Setup
Analog input
+
-
RTD
temperature probe
Thermocouple
Resistance /
Potentiometer
Voltage
Resistance transmitter

7
1 Introduction
1.4 Connection elements and connectors
(1) SMB antenna connector (antenna connection)
(2) Voltage supply connector (battery connection)
(3) Cable guide for antenna cable and voltage supply
(4) Sensor connection
(5) Setup connector
(6) Fastening holes for installation in the terminal head, form B
(7) Voltage supply socket (battery connection)
(8) SMB antenna socket (antenna connection)
(9) Seal
(10) Locknut
(11) Battery lid screw
(1)
(6)(6)
(2)
(5) (4)
(7) (8)
(3)
(9) (10)
(11)

1 Introduction
8
1.5 Dimensions
1.5.1 Transmitter
1.5.2 Antenna-battery housing
27
33
Ø44
approx. 105
approx. 125
17
49.5
Ø30
115

9
1 Introduction
1.6 Declaration of conformity
NOTE!
Hereby JUMO GmbH & Co. KG declares that the radio equipment type Wtrans is in compliance with Di-
rective 2014/53/EU. The full text of the EU declaration of conformity is available at the following Internet
address: www.jumo.net

1 Introduction
10

11
2 Identifying the device version
2 Identi fying th e device version
2.1 Nameplate
Position
The rating plate is glued laterally to the transmitter.
The factory set transmitter ID is additionally stated on a sign fitted on top of the transmitter.
Contents
The nameplate contains important information. This includes:
Device type (Typ)
Compare the specifications on the nameplate with your order documents. The supplied device version
can be identified using the order code in chapter 2.2 "Order details", page 12.
Part no. (TN)
The part no. uniquely identifies an article in the catalog. It is important for communication between the
customer and the sales department.
Fabrication number (F-Nr)
Among other things, the fabrication number indicates the date of manufacture (year/calendar week).
Date of manufacture
Example: F-Nr = 0070033801216220006
The characters in question are digits 12, 13, 14, and 15 (from the left).
The device was produced in the 22nd calendar week of 2016.
Transmitter detection (transmitter ID)
The transmitter ID is factory set. It must be entered and activated on the receiver to establish communi-
cation between the transmitter and receiver. The transmitter ID can be changed to customer specific re-
quirements using the setup program. The user must exclude that several transmitter with identical
transmitter IDs are active.
Radio frequency
The radio frequency is the frequency at which the transmitter transmits data to the receiver. In the
868 MHz band (Europe), transmission is at 868.4 MHz.
Description Designation on the nameplate Example
Device type Typ 707060/8-10/000
Part no. TN 00XXXXXX
Fabrication number F-Nr 0070033801216220006
Voltage supply DC 3.6 V
Transmitter detection
(transmitter ID)
123
Radio frequency 868.4 MHz

2 Identifying the device version
12
2.2 Order details
2.3 Scope of delivery
2.4 Accessories
(1) Basic type
707060 JUMO Wtrans B
Programmable head transmitter with wireless data transmissiona
aThe terminal head form B is not included in the scope of delivery.
(2) Input
8 Standard with default settings
9 Customer-specific programming according to specificationsb
bPlease specify the transmitter ID, transmission interval, measuring range and the probe type in plain
text.
(3) Output (transmitter)
10 Radio frequency 868.4 MHz (Europe)
(4) Extra code
000 None
(1) (2) (3) (4)
Order code /-/
Order example 707060 / 8 - 10 / 000
1 head transmitter in the version ordered, without terminal head, form B,
including fastening material (2 screws and 2 pressure springs)
1 antenna-battery housing with plug connections protected against polarity reversal
1 lithium battery, 3.6 V, 2.2 Ah (size AA), inserted in the antenna-battery housing, ready for use
1 operating manual
Description Part no.
Lithium battery, 3.6 V, 2.2 Ah (size AA) 00547559
PC interface with USB/TTL converter, adapter (socket), and adapter (pins) 00456352
Setup program on CD-ROM, multilingual 00488887
Setup program including OnlineChart on CD-ROM, multilingual 00549067
OnlineChart activation 00549188
Precision resistor, 2.5 Ω/ 0.1% (shunt) 00555645

13
3 Preparing the transmitter
3 Preparing the trans mitter
3.1 Inserting/changing the battery
CAUTION!
Make sure that pollutants, moisture, and steam cannot enter the device.
The device could be destroyed.
When inserting/changing the lithium battery, make sure that the device is not exposed to contami-
nants, moisture, or steam.
CAUTION!
The transmitter will not function if the poles are incorrectly connected.
The transmitter's battery and electronics could be damaged.
Make sure that the battery poles are correctly connected.
CAUTION!
Incorrect batteries put safety at risk.
The device could be destroyed if incorrect batteries are used.
Only use the lithium battery that is available as an accessory.
The voltage supply to the transmitter is via the supplied 3.6 V, 2.2 Ah lithium battery inserted in the an-
tenna-battery housing ready for use.
Battery service life depends on the set transmission interval and the ambient temperature: approx. 1 year
with the factory-set values (transmission interval 15 s) and room temperature.

3 Preparing the transmitter
14
If the battery was removed or if it must be replaced, proceed as follows:
1. Undo the battery lid screw (A) on the antenna-battery housing and open the housing lid (B).
2. Press on the battery in the area of the minus pole (D) to remove the battery (C).
3. When inserting a battery, always insert the minus pole (D) side first followed by the plus pole (E).
4. Close the housing lid (B) again and ensure the correct seal position.
5. Retighten the battery lid screw (A).
(D)
(A)
(E)
(B)
(C)

15
3 Preparing the transmitter
3.2 Safety information concerning lithium batteries
 http://battery.jumo.info
3.3 Battery operating life
The battery service life, depending on the transmission interval (2 s, 15 s, 30 s, 90 s) and the ambient
temperature, are shown in the following figure.
3.4 Disposal of lithium batteries
Please dispose of all batteries according to the Life-Cycle Resource Management and Waste Act and
the national regulations.
Insulate the contacts of lithium batteries not completely discharged. Disposal of batteries together with
domestic waste is expressively prohibited. Batteries can be deposited at communal waste collection
points or the local retailers.
2s
15 s
30s
90 s
100
80
60
50
40
30
20
10
8
6
5
4
3
2
1
Ambient temperature in °C
-40 -30-20-100102030405060708090
Battery service life in month

3 Preparing the transmitter
16

17
4 Transmission range
4 Transmission range
4.1 General information about wireless transmission
Wireless signals are electromagnetic waves, the signal of which weakens during travel from the trans-
mitter to the receiver (this is referred to as path attenuation). The field strength drops inversely propor-
tionally to the square of the distance between the transmitter and receiver.
In addition to this natural range restriction, a reduced range may also be caused by the following:
• Reinforced concrete walls, metallic objects and surfaces, heat insulation, or thermal protection win-
dows with a vapor-deposited metal layer reflect and absorb electromagnetic waves, meaning a dead
spot is formed behind them.
• Metal tubes, chains, etc. on the transmitter housing; therefore, do not fasten any metallic objects to
the transmitter housing.
• Insufficient spacing between several transmitters; therefore, ensure a minimum spacing of 20 cm.
• The antenna is installed at an insufficient height; therefore, install as high as possible above the
ground and ensure there is a line of sight between the transmitter and receiver.
The following values are reference values relating to permeability for radio signals:
When using the antenna holder for wall mounting for the receiver, the free-field range between the trans-
mitter and the receiver is 300 m. Optimum reception is achieved when a line of sight can be established
between the transmitter and the receiver.
If the receiver is mounted in a control cabinet, behind concrete walls, or in the immediate vicinity of con-
crete ceilings, the antenna (vertical) with antenna holder for wall mounting and the appropriate antenna
cable must be used on the receiver as a mandatory requirement.
Material Permeability
Wood, plaster, glass (uncoated) 90 to 100 %
Brickwork, press boards 65to95%
Reinforced concrete 10 to 90 %
Metal, aluminum lamination 0 to 10 %

4 Transmission range
18
4.2 Possible impairment of radio transmission
Collisions in case of too many transmitters
When using a large number of transmitters, do not select a transmission interval that is too low, otherwise
the radio channel will be unnecessarily occupied. A transmission interval that is too low leads to a very
high data volume on the selected frequency, which can lead to collisions with other transmitters. The col-
lisions can cause datagrams to be destroyed during wireless transmission.
Fig. 4-1 The datagrams of a transmitter reach the receiver without collisions
Fig. 4-2 The datagrams of several transmitters can collide
Fig. 4-3 Collisions depending on the number of transmitters with a transmission interval of 1 s
As you can see in Fig. 4-3 the error curve increases sharply once there are 24 transmitters.
Radio telegram
ID, measuring
value
ReceiverTransmitter
Radio telegramsTransmitters
ID, measuring
value
ID, measuring
value
ID, measuring
value
ID, measuring
value
ID, measuring
value
Receiver
16 18 20 22 24 26 28 30
Number of transmitters
Fault increase

19
4 Transmission range
For this reason, we recommend using a maximum of 16 transmitters for the smallest transmission inter-
val of 1 s. For the factory setting of 15 s, a considerably larger number of transmitters can be used.
Estimating the maximum number of transmitters
If more than the recommended 16 transmitters are to be used with a transmission interval of 1 s, select
a higher transmission interval to prevent an increased error quota.
Example:
When the number of transmitters is to be increased additionally, the following calculation results in the
next example:
Example:
However, from a transmission interval of ≥3 s, the datagram is transmitted twice. This means the number
of transmitters that can be used is halved.
The same behavior occurs with a transmission interval of ≥60 s. As of this transmission interval the da-
tagram is transmitted three times.
External transmitters
The 868-MHz band can also be used freely by other devices. External transmitters can transmit on the
same frequency. If, for example, the transmitter and an external transmitter transmit their wireless data-
grams at the same time, the datagram will be destroyed. No error is detected because the transmitters
cannot check their own transmission while transmitting.
Electrical devices
In a harsh industrial environment, wireless datagrams can be destroyed by such things as frequency
converters, electrical welding equipment, poorly shielded PCs, audio/video devices, electronic trans-
formers or electronic ballasts, etc.
Error fade-out
Lost datagrams (caused either by external interference sources or by collisions when using a large num-
ber of transmitters) can be ignored on the receiving side by the wireless timeout parameter and do not
cause error messages. As a result, the last received value is retained for 2 to 10 transmission intervals;
the wireless timeout alarm is only activated then (indicated by "----") and the failure information is sig-
naled to the receiver's analog outputs.
NOTE!
In the event of collisions caused by an excessive number of transmitters, observe and, if necessary, cor-
rect the factors "number of transmitters", "transmission intervals" and, on the receiver, "radio transmis-
sion timeout".
16 transmitters with a transmission interval of 1 s = 32 transmitters with a transmission interval of 2 s
16 transmitters with a transmission interval of 1 s = 48 transmitters with a transmission interval of 3 s
(in theory)
16 transmitters with a transmission interval of 1 s = 24 transmitters with a transmission interval of 3 s
(effective)

4 Transmission range
20