IWPT Wireless Battery Powered Pressure Sensor and Receiver

Wireless battery powered pressure sensor and receiver system for connecting pressure sensors without wires to a central wireless receiver which converts each received pressure signal channel to a 1-5Vdc, 4-20mA output, USB, Ethernet TCP, RS232 RTU, RS485 RTU or 2G 3G 4G mobile cellular network.

The IWPT belongs to the IW series of wireless measurement products, and can be used alongside a suite of complementary wireless transmitters for different measurement types, and is fully compatible with all IW series wireless receivers.

Contents

Product Parameters

Pressure Range: 50 up to 1000 mbar, 1 up to 15 psi gauge & absolute, -1 up to 400 bar, -15…0 up to 5800 psi gauge
Accuracy: 0.25% FS non-linearity & hysteresis
Receiver Output: 4-20mA or 1-5Vdc
Receiver Range: 500m / 1650ft max
Receiver Frequency: 2.4 GHz
Battery Life: 5 years at 10 sec update rate
Alarm Output: 5A rated changeover contact
Electrical Connection: Screw terminals via cable gland
Process Connection: ¼ BSP P or ¼ NPT male
Media Compatibility: Ceramic diaphragm, Stainless steel 316 process connection, Viton seals
Media Operating Temperature: -20 to +135degC
Sensor Ambient Temperature: -20 to +80degC
Receiver Operating Temperature: -20 to +50degC
Special Features: Wireless signal transmission, battery powered
Special Options: 3dBI antenna 750m / 2500ft max range
Sensor Power: Internal battery, Lithium C cell
Receiver Power: 12…32 Vdc external

Product Description

The IWPT wireless pressure sensor & receiver is a cost effective replacement to a traditionally wired pressure sensors that offers the advantages of a low-cost installation in inaccessible and expensive installation environments.

The key benefit of wireless is to avoid long, tortuous or expensive cable runs over larger areas. The battery powered wireless pressure sensors can have a range of up to 750m, and can communicate with either a single-channel or five-channel receivers for multi-measurement systems.

Setting up the equipment is quick and easy to do, and free configuration software is available for more complex systems. The pressure sensors are easily paired to the compatible IWR family of single or five channel wireless receivers thus offering a plug and play solution for your pressure measurement applications.

Wireless Transmitter Types

The IWPT sensor should be used with either the IWR-1 or IWR-5 receiver. A line-of-sight range of up to 500m / 1650ft is possible or 750m / 2500ft max if used with the 3dBI antenna.

Each device is temperature compensated, calibrated and supplied with a traceable serial number.

A swivel adaptor is available which allows the head to be easily aligned to the IWR receiver.

IWPT, IWPTU (-1 to 400 bar, -15 to 5800 psi ranges)

The higher pressure range IWPT (bar, 1/4bsp) & IWPTU (psi, 1/4npt ) wireless pressure sensor uses a piezo-resistive ceramic sensor module mounted within a 316 stainless steel housing giving excellent media compatibility for the harshest of applications.

IWPT Part Numbers

IWPT-G1000-00 – 0…1 bar gauge
IWPT-G6000-00 – 0…6 bar gauge
IWPT-GM1P9-00 – -1 to +9 bar gauge
IWPT-G1002-00 – 0…10 bar gauge
IWPT-G1602-00 – 0…16 bar gauge
IWPT-C0184-00 – -1…+24 bar gauge
IWPT-G2502-00 – 0…25 bar gauge
IWPT-G4002-00 – 0…40 bar gauge
IWPT-G1003-00 – 0…100 bar gauge
IWPT-G2503-00 – 0…250 bar gauge
IWPT-G4003-00 – 0…400 bar gauge

IWPTU Part Numbers

IWPTU-GP015-00 – 0…15 psi gauge
IWPTU-GP030-00 – 0…30 psi gauge
IWPTU-C0446-00 – -14.5…+150 psi gauge
IWPTU-GP075-00 – 0…75 psi gauge
IWPTU-GP100-00 – 0…100 psi gauge
IWPTU-C0447-00 – -14.5…+350 psi gauge
IWPTU-GP150-00 – 0…150 psi gauge
IWPTU-GP300-00 – 0…300 psi gauge
IWPTU-GP750-00 – 0…750 psi gauge
IWPTU-GP1K5-00 – 0…1500 psi gauge
IWPTU-GP3K6-00 – 0…3600 psi gauge
IWPTU-GP5K8-00 – 0…5800 psi gauge

IWPTL, IWPTLU (50 to 1000 mbar, 1 to 15 psi ranges)

The lower pressure range IWPTL (bar,1/4bsp) & IWPTLU (psi, 1/4npt) wireless pressure sensor uses a piezo-resistive silicon sensor module mounted within a 316 stainless steel housing giving excellent media compatibility for the harshest of applications.

IWPTL Part Numbers

IWPTL-G0050-00 – 0…50 mbar gauge
IWPTL-G0100-00 – 0…100 mbar gauge
IWPTL-G0250-00 – 0…250 mbar gauge
IWPTL-G0500-00 – 0…500 mbar gauge
IWPTL-G0750-00 – 0…750 mbar gauge
IWPTL-G1000-00 – 0…1000 mbar gauge
IWPTL-A0500-00 – 0…500 mbar absolute
IWPTL-A0750-00 – 0…750 mbar absolute
IWPTL-A1000-00 – 0…1000 mbar absolute

IWPTLU Part Numbers

IWPTLU-GP001-00 – 0…1 psi gauge
IWPTLU-GP002-00 – 0…2 psi gauge
IWPTLU-GP005-00 – 0…2 psi gauge
IWPTLU-GP008-00 – 0…8 psi gauge
IWPTLU-GP010-00 – 0…10 psi gauge
IWPTLU-GP015-00 – 0…15 psi gauge
IWPTLU-AP005-00 – 0…5 psi absolute
IWPTLU-AP010-00 – 0…10 psi absolute
IWPTLU-AP015-00 – 0…15 psi absolute

Wireless Receiver Signal Converter Types

Each wireless receiver signal converter has a user selectable 1 to 5 volt dc or 4 to 20 milliamp analogue signal output corresponding to the calibrated pressure range of the remote wireless pressure sensor and 5 amp rated changeover contact for alarm functionality.

With the standard 0dBI antenna, a line-of-sight range of up to 500m can be achieved and, using the optional 3dBI antenna, up to 750m (LOS) is achievable.

User channel configuration is possible with the use of the program, IWR-Set, which ensures minimal user set-up time and thus ensures a simple solution to multi-channel pressure measurement applications.

IWR-1 Single Channel

The IWR-1 is a single channel receiver designed to pair with the IWPT series of wireless pressure sensors to form a cost effective replacement of the traditional wired pressure transducer.

In addition to user configuration software provided, the single channel transmitter/receiver combination is designed to work ‘out of the box’ offering a simple plug and play solution to pressure measurement applications.

IWR-5 Five Channel

The IWR-5 is a five channel receiver designed to pair with the IWPT series of wireless pressure sensors to form a cost effective replacement of the traditional wired pressure transducer.

Wireless Receiver Gateway Types

These receivers provide a central receiver hub for multiple wireless sensors to collect readings and sending on via digital communications to a PC, web server or data acquisition equipment.

IWR-USB Wireless to USB Gateway Receiver

The IWR-USB Gateway provides a link between wireless sensors and any PC with a USB connection.

IoT Gateway Wireless to 2G 3G 4G Modem Receiver

The IoT Gateway allows virtually any sensor to be monitored from anywhere with a cellular connection.

IWR-PORT Wireless to Ethernet, RS232 or RS485 Gateway Receiver

The IWR-PORT Ethernet Gateway provides a link between wireless sensors and Industrial Ethernet TCP or RS-232/485 RTU networks.

Related Wireless Measuring Transmitters

Measure more parameters with other wireless transmitters compatible with the IWR series of wireless receivers.

Applications

Simple cable replacement installation – dispense with expensive cable runs
Environmental monitoring – pumping stations, sewage plants, water treatment
Facilities management – boiler rooms, plant, hydraulics, plant pneumatics
Asset monitoring – tanks farms, process plants, HVAC and building management
Service Contract – temporary installation for servicing and field trials
Industrial Automation – conveyors, CNC machine tools, lifting and handling equipment

Product Help

Part numbers for discontinued stock numbers

The following stock numbers have been discontinued, please click the button below to request a quote for the equivalent product specification and replacement part number.

IWR Wireless Receivers discontinued stock numbers

234-9635 – IoT Gateway – 2G 3G 4G wireless receiver
234-9692 – IWR-PORT-232 – RS232 wireless receiver
234-9693 – IWR-PORT-485 – RS485 wireless receiver
234-9695 – IWR-PORT-E – ethernet wireless receiver
234-9696 – IWR-USB – USB wireless receiver
123-5253 – IWR-5 – five channels analogue output wireless receiver
123-5252 – IWR-1 – single channel analogue output wireless receiver

IWPT Wireless Pressure Sensors discontinued stock numbers

123-5232 – IWPT-G1000-00 – 0…1 bar gauge
123-5233 – IWPT-G6000-00 – 0…6 bar gauge
123-5234 – IWPT-GM1P9-00 – -1…+9 bar gauge
123-5235 – IWPT-G1002-00 – 0…10 bar gauge
123-5236 – IWPT-G1602-00 – 0…16 bar gauge
123-5237 – IWPT-C0184-00 – -1 to +24 bar gauge
123-5238 – IWPT-G2502-00 – 0…25 bar gauge
123-5239 – IWPT-G4002-00 – 0…40 bar gauge
123-5240 – IWPT-G1003-00 – 0…100 bar gauge
123-5241 – IWPT-G2503-00 – 0…250 bar gauge
123-5242 – IWPT-G4003-00 – 0…400 bar gauge

IWPTL Wireless Pressure Sensors discontinued stock numbers

123-5243 – IWPTL-G0050-00 – 0…50 mbar gauge
123-5244 – IWPTL-G0100-00 – 0…100 mbar gauge
123-5245 – IWPTL-G0250-00 – 0…250 mbar gauge
123-5246 – IWPTL-G0500-00 – 0…500 mbar gauge
123-5247 – IWPTL-G0750-00 – 0…750 mbar gauge
123-5248 – IWPTL-G1000-00 – 0…1000 mbar gauge
123-5249 – IWPTL-A0500-00 – 0…500 mbar absolute
123-5250 – IWPTL-A0750-00 – 0…750 mbar absolute
123-5251 – IWPTL-A1000-00 – 0…1000 mbar absolute

Signal obstructions to line of sight

How susceptible is the signal to obstructions (i.e. people and equipment) to its line of sight up to 19 metres away?

Obstructions reduce the length of transmissions but 19m will be fine with substantial obstructions.

Transmission from inside an electrical enclosure

Could the receiver be located inside an electrical enclosure?

The receiver can be inside a plastic enclosure or a metal enclosure with external antenna.

Pairing sensor with receiver

What’s involved in the pairing process of the sensors to the receiver?

The system is set-up to work out the box so no configuration would be required if supplied together. Otherwise it can be done using DIP switches on the sensors or via PC software and a USB cable.

Re-connecting after Receiver power down

Once paired, will the sensor automatically connect back to the same receiver when the receiver is powered on?

Yes pairing is retained in non-volatile memory so the sensor will re-connect once the receiver is turned back on.

Multiple receivers

What happens when 2 or more receivers are working in the same space, can you run more than 5 sensors close together without running into problems?

Each Receiver can be given a different Pan_ID or Network address so only Transmitters with the same Pan_ID would be picked up by that receiver. This allows up to 16 receivers to be co-located without them interfering with each other.

Wireless standard

What wireless standard is used and what are the frequencies/protocol for each sensor channel?

The system uses the ISM 2.4GHz band with up to 15 different RF channels available for selection. The protocol used is a custom protocol based on the MiWi Pro stack.

Interference from WiFi

How does the IWPT avoid interference from nearby WiFi access points?

The frequency used by the system is located between the common WiFi channels used.

Effect on other wireless devices

What prevents the IWPT interfering with other wireless devices such as WiFi connections?

The system deploys a ‘listen before send’ algorithm to ensure the transmissions fit alongside existing RF traffic. Each transmission only lasts a few mS so the affect of transmitters on the existing RF infrastructure is negligible.

Pairing replacement sensor with receiver

If a sensor needs to be replaced, what is the process for pairing a new sensor to a specific channel?

If a sensor is replaced the new one is just configured to the same Network and Channel as the original. The pairing is very straightforward and can be done using DIP switches on the sensors or via PC software and a USB cable.

Reading sample rate

What is the minimum reading sample rate for one channel receiver and five channels?

The quickest recommended transmission rate is 10 seconds although the system does allow for a rate of 1 second to be selected. Battery life at a 10 seconds transmission rate is more than 5 years.

Rotating equipment

What is the maximum possible centripetal acceleration for using the IWPT on rotational equipment?

The system hasn’t been tested for centripetal force, but has been used on applications such as rotating ovens for cooking chicken and also on rotating arms on waste water treatment plants when measuring effluent depth.

Power management

Does the IWPT have a sleep mode to conserve battery life when the receiver is switched off?

If the receiver is switched off the transmitter does still attempt to send messages but after a short time goes into a power saving mode. In this mode , although the transmitter continues to send transmissions it only sends them once every transmission interval. In standard mode it tries to send four times if no acknowledgement is received before giving up.

Power on start-up time

How long does it take the receiver to retrieve pressure readings from power on?

The receiver takes only approximately 1 second to boot up and is then ready to receive messages. The analogue and relay outputs then go to their required positions within 5 seconds of power up.

Adjusting zero offsets

Does the wireless system have an auto-zero function for setting all the sensor readings to zero when vented to ambient pressure?

Both the transmitters and receivers can be user-calibrated and details on this are contained in the user manuals. The transmitter has a zero tare function which can be used to eliminate the effects of zero drift.

Request Product Price

Please select the options you require for the IWPT Wireless Battery Powered Pressure Sensor and Receiver in your application and request a quote.