Sensata IWTaT Series User manual

IWTaT Series
Wireless Temperature & Humidity Operating Manual
Copyright © 2021 Sensata Technologies, Inc. Page 1
IWTaT Series
Industrial Wireless Temperature and Humidity
Transmitter
Whilst every effort has been taken to ensure the accuracy of this document, we accept
no responsibility for damage, injury, loss, or expense resulting from errors or omissions,
and reserve the right of amendment without notice.
Information for users
This equipment has been tested and found to comply with the limits for a Class B device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment
generates uses and can radiate radio frequency energy, and if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
measures:
•Reorient or relocate the receiving antenna
•Increase the separation between the equipment and receiver
•Connect the equipment into an outlet on a circuit different from that which the
receiver is connected
•Consult the dealer or an experienced radio/TV technician for help
Caution: To satisfy FCC RF Exposure requirements for mobile and base station
transmission devices, a separation distance of 20cm or more should be maintained
between the antenna of this device and persons during operation. To ensure compliance
operation at closer than this distance is not recommended. The antenna used for this
transmitter must not be co-located or operating in conjunction with any other antenna or
transmitter. No other antenna may be used with this equipment other than the PCB
antenna supplied with this equipment.
This document may not be reproduced in any way without the prior written permission of
the company.
Cynergy3 Components Ltd
7 Cobham Road, Ferndown Industrial Estate, Wimborne
Dorset BH21 7PE, United Kingdom
Tel: [phone], email: [e-mail]
www.cynergy3.com

IWTaT Series
Wireless Temperature & Humidity Operating Manual
Copyright © 2021 Sensata Technologies, Inc. Page 2
CONTENTS
1. INTRODUCTION ___________________________ Error! Bookmark not defined.
1.1 SAFETY INFORMATION __________________________ Error! Bookmark not defined.
1.2 HARDWARE FEATURES _________________________ Error! Bookmark not defined.
2. UNPACKING ______________________________ Error! Bookmark not defined.
3. PRODUCT IDENTIFICATION LABEL___________ Error! Bookmark not defined.
5. SETTING UP THE IWPT WIRELESS PRESSURE TRANSMITTERError! Bookmark not de
6. TROUBLE-SHOOTING GUIDE ________________ Error! Bookmark not defined.
7. SYSTEM PART NUMBERS___________________ Error! Bookmark not defined.
8. SPECIFICATIONS & CERTIFICATIONS ________ Error! Bookmark not defined.
1. INTRODUCTION
1.1 Safety Information
This manual contains information that must be observed in the interest of your
safety and to avoid damage to assets. Please read this manual before installing
and commissioning the device and keep the manual in an accessible location for
all users.
Contains FCC ID: W70MRF24J40MDME
Caution: To satisfy FCC RF Exposure requirements for mobile and base station
transmission devices, a separation distance of 20 cm or more should be
maintained between the antenna of this device and persons during operation. To
ensure compliance operation at closer than this distance is not recommended.
The antenna used for this transmitter must not be co-located or operating in
conjunction with any other antenna or transmitter. No other antenna may be used
with this equipment other than the PCB antenna supplied with this equipment.
Please see the Certifications section for more information on RF Exposure
Compliance
1.2 Hardware Features
Our range of IWT wireless transmitters are available for a wide range of input
types.
The IWmAT 4-20 mA Transmitter has been designed to accept an input from an
existing 4-20 mA signal and transmit the value to one of the IWR range of
receivers.
Please note that the IWmAT does not power the 4-20 mA loop, if powering a
standard 4-20 mA wired transmitter is required please use the IWTxT unit
instead.

IWTaT Series
Wireless Temperature & Humidity Operating Manual
Copyright © 2021 Sensata Technologies, Inc. Page 3
Depending on the receiver used, the value can be outputted as either a 4-20 mA
or 1-5 V dc signal, displayed and logged on a PC, output as a Modbus RTU or
TCP/IP register, or transmitted to a remote server using MQTT messages. The
range of receivers available is shown in the table below.
Receiver Type
Features
IWR-1
1 off 4-20 mA or 1-5 V and 1 off Relay Output
IWR-5
5 off 4-20 mA or 1-5 V and 1 off Relay Output
IWR-USB
Connects to any PC for data display and logging
IWR-PORT
Stores data from IWT transmitters as Modbus
Registers
IoT-Gateway
Stores data from IWT Transmitters & sends it to
remote servers using MQTT packets
The IWTaT and IWTRhT transmitters work within the ISM license-free
2.4 GHz bands. Ranges of up to 500 m are possible using the standard
transmitter and receiver unit with the optional 3dBi antenna giving a range of up
to 750 m.
The transmitter is powered by a primary 3.6 V lithium cell and care must be taken
to insert the battery in the correct polarity.
UNPACKING
The instrument should be carefully inspected for signs of damage that may have
occurred in transit. In the unlikely case that damage has been sustained, DO
NOT use the instrument, but please retain all packaging for our inspection and
contact your supplier immediately.
.
3 PRODUCT IDENTIFICATION LABEL
The unit delivered should be carefully inspected to ensure it is suitable for the
application required. Detailed information on the product is included in the
identification label and the user manual.
Please ensure, in particular, that the input range of the IWT is suitable for the
intended application and that the IWT unit will not be subjected to temperatures
greater than those specified in this manual.

IWTaT Series
Wireless Temperature & Humidity Operating Manual
Copyright © 2021 Sensata Technologies, Inc. Page 4
4. INSTALLING/CHANGING THE BATTERY
A Lithium 3.6 V battery is included inside the IWT transmitter. The battery may be
changed at any time, but care must be taken to install the battery with the correct
polarity.
After the battery has been changed, the unit should be switched on using the
yellow slider switch SW3 and then the pushbutton SW1 should be pushed and
held for 5 s. This is to ensure the battery life count is reset correctly when a new
battery is installed.
The internal red LED will flash 5 times to indicate this procedure has been carried
out successfully.
The battery life is determined by the rate the transmitter sends the Temperature
value to the receiver, this update rate can be selected using Dip Switch 1 and the
default value is 10s.
Please dispose of all batteries as specified by the legislator according to the
Closed Substance Cycle and Waste Management Act or country regulations.
! WARNING!
5. SETTING UP THE IWT WIRELESS TRANSMITTER
The IWT instrument is shipped in a default configuration which allows the unit to
connect with any default IWR receiver unit and transmit the measured signal
every 10 s simply by switching the unit on using SW3 on the internal circuit
board.
If a different update rate is required, or a different network frequency channel is
required these parameters can be selected using DIP Switch 1 as detailed below:
!
! WARNING !
MAKE SURE THE CORRECT
BATTERY POLARITY IS OBSERVED!
!
! WARNING !
INCORRECT BATTERIES MAY DAMAGE THE UNIT
USE ONLY 3.6 V LITHIUM C CELL BATTERIES

IWTaT Series
Wireless Temperature & Humidity Operating Manual
Copyright © 2021 Sensata Technologies, Inc. Page 5
Switches 1, 2, 3 & 4 select the RF Network the IWT will transmit on. The default
network for both the IWT transmitter and IWR receiver is network 1.
RF NETWORK 1 2 3 4
1 0 0 0 0
2 0 0 0 1
3 0 0 1 0
4 0 0 1 1
5 0 1 0 0
6 0 1 0 1
7 0 1 1 0
8 0 1 1 1
9 1 0 0 0
10 1 0 0 1
11 1 0 1 0
12 1 0 1 1
13 1 1 0 0
14 1 1 0 1
15 1 11 0
16 1 11 1
Switches 5, 6 & 7 select the Transmission rate of the unit. This effectively sets
how often the measured value is sent to the receiver.
At 1 and 5 second rate, a power save option is available (on by default) that
changes the transmit time to every 30 seconds if the IWR is switched off or out of
range for more than 3 minutes. This option can be changed using the IWT-SET
program.
Transmit time 567
10 seconds 0 0 0
20 seconds 0 0 1
30 seconds 0 1 0
60 seconds 0 1 1
120 seconds 1 0 0
600 seconds 1 0 1
1 second 1 1 0
5 seconds 1 11
ON/OFF
Switch SW3
SW1
BATTERY
LED1
DIP SWITCH
USB
+

IWTaT Series
Wireless Temperature & Humidity Operating Manual
Copyright © 2021 Sensata Technologies, Inc. Page 6
Switches 8, 9, and 10 set the Channel Number of the transmitter. This is used
with the 5 channel receiver unit (IWR-5) to select which IWT wireless transmitter
is linked to which
4-20 mA or 1-5 V dc output channel.
Channels 1 to 128 can be used with an IWR-USB, IWR-PORT, or IoT Gateway
receiver. The channel number can be changed using the IWT-SET PC
configuration software if switches 8, 9, and 10 are switched to the on position.
Tx Channel Number 8 9 10
1 0 0 0
2 0 0 1
3 0 1 0
4 0 1 1
5 1 0 0
6 1 0 1
7 1 1 0
8 (or 1 to 128) 1 1 1
The IWT transmitter is now set up and ready to be used. Install the unit where
required, wire the appropriate input into the IWT as specified below (if there isn’t
an integral sensor), and switch the unit ON using SW3. Pushbutton switch SW1
can be pushed to force the unit to transmit its current measured value. A red LED
1 will flash once when the transmit button is pressed and flash a second time if
the transmission has been received and acknowledged by an IWR receiver unit.
If the unit has transmitted successfully, the output of the connected receiver unit
will output a value reflecting the signal level being measured.
6. TROUBLE-SHOOTING GUIDE
Problem encountered
Possible Causes
LED1 doesn’t flash when pushbutton
SW1 is pressed
Unit not switched on, switch on using
SW3.
The battery is not installed correctly.
The battery needs replacing.
LED1 only flashes once when SW1 is
pressed
IWR receiver not switched on.
IWR receiver is not set up for the same
RF network.
IWR receiver not within range of the
transmitter.
If an IWR-1
receiver is used, ensure
that the transmitter is set to Tx Channel
1
Output from the IWR receiver isn’t
IWR receiver set up incorrectly, see

IWTaT Series
Wireless Temperature & Humidity Operating Manual
Copyright © 2021 Sensata Technologies, Inc. Page 7
equivalent to the signal being
monitored
IWR user manual for further details.
Check that the green external LED on
the receiver is flashing when the
transmitter push
button is pressed as
the receiver may be out of range.
7. SYSTEM PART NUMBERS
Part Number
Input Range
Terminal Connection
IWTaT-000
Ambient Temperature
N/A
IWTRhT-000
Ambient Temp & RH
N/A
Receiver Part Number
Number of Output Channels
IWR-1
One
IWR-5
Five
IWR-USB
Data from up to 128 IWT Transmitters
IWR-PORT
Data from up to 128 IWT Transmitters
IoT-Gateway
Data from up to 128 IWT Transmitters
IANT-3
3 dBi Antenna

IWTaT Series
Wireless Temperature & Humidity Operating Manual
Copyright © 2021 Sensata Technologies, Inc. Page 8
Sensata Technologies, Inc. (“Sensata”) data sheets are solely intended to assist designers (“Buyers”) who are developing systems that
incorporate Sensata products (also referred to herein as “components”). Buyer understands and agrees that Buyer remains responsible for
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using standard laboratory conditions and engineering practices. Sensata has not conducted any testing other than that specifically described
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to its data sheets or components without notice.
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SUPPORT THAT MAY BE PROVIDED BY SENSATA.
Mailing Address: Sensata Technologies, Inc., 529 Pleasant Street, Attleboro, MA 02703, USA.
CONTACT US
EUROPE
[phone]
[e-mail]
Cynergy3 Components Ltd.
7 Cobham Road,
Ferndown Industrial Estate,
Wimborne, Dorset,
BH21 7PE, United Kingdom
USA
[phone] / [phone]
c3w [e-mail]
8. SPECIFICATIONS @ 25°C
System Performance
Accuracy Temperature
<± 0-4 °C at 30 °C
Accuracy RH
<± 3% between 10 & 90% RH
Input range
-40 to +120 °C
Ambient Temperature
-20 to +80 °C
Storage Temperature
-20 to +80 °C
Weight
310 g
RF Transmitter
Contains FCC W70MRF24J40MDME
Power Requirements
Lithium Thionyl Chloride C 3.6 V Cell
Battery Life
5 Years (10s transmission rate)
Dimensions
79 mm x 79 mm x 52mm (L x W x D)
Mounting
Any Orientation