4-20 mA Sensor
The Urban IO 4-20 mA sensor measures current on a 4-20 mA industrial control loop,
or industrial sensor and reports the mA value as a percentage (%).
This ensor is wired in series with an existing 4-20mA sensor and “piggy-back” measures
the mA value in that sensor loop. This alows the Process Loop Sensor to mimic
and report the values being read by an isolated or remote industrial sensor that is
not connected to a SCADA or analytics platform.
This product is designed for usage with an Urban.io IoT Gateway. In ideal conditions with correct orientation of sensors and gateway antennas the following ranges can be achieved.
- Up to 5km line-of-sight where there are no obstructions between the gateway and the sensor and they are placed on the same horizontal plane.
- 500m non-line-of-sight in an enclosed space where there are one or more obstructions (objects, walls, buildings) between the gateway and the sensor and it is placed on the same horizontal plane.
This product is designed for application in normal indoor and certain outdoor environments. The gateway housing is IP65 rated and as such is designed to be water and dust resistant as well as generally resistant to direct sunlight. However the 240v Power Adapter is not rated for outdoor usage.
Urban.io proactively supports the interfacing of IoT sensor data with all industry leading Asset Management, Field Force and Work Management, Data Analytics and Machine Learning Platforms. We provide the following Public APIs as well as pre-built API Adapters for the following Enterprise IoT Systems :
- API publics : MQTT, Rest Web Services
- API adaptés : AWS IoT Core, IBM Watson IoT, Azure IoT Hub
Reduce the cost of
people on site
Optimize building
performance
Cloud reporting platform
IoT API
Email/SMS alerts
4-20 mA Sensor features :
General Sensor Features
Gateway to sensor network range
500m indoor
5km outdoor
Operating Temperature
-40°C to 85°C
Power Supply
3.0 V CR2477 coin cell battery (replaceable)
Battery life
2 years under normal operation
Reading frequency
1 Sample each 10 minute interval
Data transmission frequency
10 minute interval
Primary Sensing Element
Internal shunt resistor
900mm cable with two wire interface
Secondary Sensing Elements
Fault detection
(loss of sensing element)
IoT network connectivity
(Signal to Noise levels “SNR”)
IoT device battery Level
(% of remaining battery level)
Technical specifications :
Maximum resolution over measured electrical range | Shunt resistor | Maximum voltage drop | Maximum input voltage | Calibration / Drift | Accuracy | Temperature range (limited by battery) | Enclosure rating |
65 535 detectable points | 22 ohm | 0,5 V at 20 mA | 3 V | None | +/- 0,5% | -20°C to 85°C | IP67 |
Power specifications :
Supply Voltage | Current consumption — sleep mode | Current consumption — sensor active sampling mode | Current consumption — radio RX mode | Current consumption — radio TX mode (max) |
2,0 - 3,4 VDC | 6 uA | 150 uA when active | 25 mA for 0.5 seconds | 100 mA for 0.5 seconds |
915-925 MHz
Suitable for South East Asia, Australia, North/South America.
863-870 MHz
Suitable for Africa, Middle East, Europe.
779-787 MHz
Suitable for China.
Mounting and dimensions :
Length : 73 mm (with antenna)
Height : 29 mm
Width : 44 mm
Weight : 85 g
Example Applications :
Remote monitoring of key
utilities assets
Remote monitoring of
isolated industrial sensors
Retrofit analysis of key
industrial assets
The company Urban IO
Urban IO provides a complete turnkey, industrial-grade system specifically designed for monitoring assets, systems, and spaces.
Our solution is the simplest and most cost-effective way to connect your assets to your management systems.
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