Stay on top of device performance

Monnit’s 0-20 mA Current Meter is capable of measuring the current off another device or sensor up to 20mA DC. This sensor is a staple in R&D departments, academic labs, healthcare settings, and other areas that rely on industrial and/or scientific sensors.

Users routinely interface Monnit’s Wireless Current Meters with pH sensors, magnetic flow meters, dissolved oxygen or pressure sensors, velocity or acceleration sensors, industrial vibration sensors, and industrial accelerometers. If the current deviates from user-set limits, Monnit’s sensor instantly alerts designated personnel via email, call, or text.

By connecting the leads on the 0-20 mA Current Meter to the positive and ground terminals of another device, the sensor can measure the current and send data to the iMonnit Online Sensor Monitoring and Notification System. The data is stored in the online system and can be reviewed and exported as a data sheet or graph. Notifications can be set up through the online system to alert the user when certain thresholds have been met or exceeded.

This sensor come standard with two replaceable AA batteries. The typical battery life is approximately 10 years.

WARNING: Use caution when interfacing to the Monnit 0-20mA Current meter. Negative voltages, AC Voltages , or DC Voltage exceeding 3.6V CAN DAMAGE the electronics of the wireless sensor. OneTemp is not responsible for troubleshooting, replacing or reimbursing damages incurred by disregarding this warning.

Features

• Impressive wireless range of up to 1,200 feet through walls
• Frequency-hopping spread spectrum (FHSS)
• Improved interference immunity
• Improved power management for longer battery life
• Over-the-air updates
• Free iMonnit basic online wireless sensor monitoring and notification system to configure sensors, view data and set alerts via SMS text and email
• Encrypt-RF® Security (Diffie-Hellman Key Exchange + AES-128 CBC for sensor data messages)
• Stores 2000 to 4000 readings if gateway connection is lost (non-volatile flash, persists through the power cycle)
  • 10-minute heartbeats = ~ 22 days
  • 2-hour heartbeats = ~ 266 days

Application

• Current transducers
• pH sensors
• Dissolved oxygen sensors
• Pressure sensors
• Magnetic flow sensors

Gateway Options for Seamless IoT Data Communication

Monnit offers a range of gateway options designed to facilitate wireless sensor data communication within IoT networks. These gateways, serve as crucial conduits for transmitting sensor data to the iMonnit software platform and play a pivotal role in ensuring seamless and efficient data transmission for IoT applications.

Click here to explore the diverse range of gateway devices available >>

Manage Your Monnit Sensors with iMonnit Cloud-based Software

Monnit’s Sensor Monitoring Software, iMonnit, stands as a cutting-edge cloud-based platform and central hub tailored for the seamless management of Monnit sensors. With a focus on data security, all information is safeguarded on dedicated servers running Microsoft SQL Server. This intuitive online user interface serves as a command centre for arranging, monitoring, and modifying device settings to suit individual requirements.

OneTemp provides complimentary activation and setup services for new iMonnit accounts, while a free mobile app empowers users to maintain control at all times. Whether opting for the basic version or upgrading to iMonnit Premiere, users can unlock the full spectrum of features that enrich the Monnit experience.

Click here to explore the software options >>

 

Supply voltage	2.0-3.8 VDC (3.0-3.8 VDC using power supply) *
Current consumption	0.2 μA (sleep mode), 0.7 μA (RTC sleep), 570 μA (MCU idle), 2.5 mA (MCU active), 5.5 mA (radio RX mode), 22.6 mA (radio TX mode)
Operating temperature range (board circuitry and batteries)	-18°C to 55°C (0°F to 130°F) using alkaline -40°C to 85°C (-40°F to 185°F) using lithium
Optimal battery temperature range (AA)	+10°C to +50°C (+50°F to +122°F)
Sensor resolution	~ 0.01 mA (11-bit single ended)
Accuracy	Uncalibrated: 0.7mA, 0.35mA typical Caibrated: 0.05mA
Conversion time	228 μs
Full-scale current	0-20 mA **
Input resistance	51 ohms
Integrated memory	Up to 512 sensor messages
Wireless range	1,200+ ft non-line-of-sight
Security	Encrypt-RF® (256-bit key exchange and AES-128 CTR)
Weight	3.7 ounces
Certifications	900 MHz product; FCC ID: ZTL-G2SC1 and IC: 9794A-G2SC1. 868 and 433 MHz product tested and found to comply with: EN 300 220-2 V3.1.1 (2017-02), EN 300 220-2 V3.1.1 (2017-02) and EN 60950

*Hardware cannot withstand negative voltage. Please take care when connecting a power device.
**If application exceeds 20 mA the sensor will return a maximum reading of 20 mA. If current applied to measurement port
exceeds 30 mA, circuit protection and conditioning is required.