Monnit's ALTA wireless 0-20mA current meters are capable of measuring the current off another device or sensor, up to 20mA (DC), by connecting the leads of the sensor to the positive and ground terminals of the device being measured. Examples of interfacing devices include, but are not limited to: Current transducers (CTs) with outputs up to 20 mA, pH sensor, dissolved oxygen sensor, pressure sensor, magnetic flow meters, velocity or acceleration sensors, industrial vibration sensors, industrial accelerometers, any kind of sensor that specifies the output is in (mA) within the range of 0 – 20.
* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting frequency and other variables.
0-20 mA Current Meter Specifications
|Resolution||~ 0.01 mA (11-bit single ended)|
|Accuracy||Uncalibrated: 0.7mA, 0.35mA typical
|Conversion Time||228 µs|
|Full Scale Voltage||0 - 20 mA|
|Security||Encrypt-RF® (256-bit key exchange and AES-128 CTR)|
ALTA Coin Cell Specifications
|Battery Type||Replaceable 3.0V (CR2032) Coin Cell Battery|
|Dimension||2.0 in x 1.125 in x 0.875 in|
|Max Operating Temperature||-7°C to +60°C ( 20°F to +140°F )|
|Optimal Battery Operating Temperature (Coin Cell)||+10°C to +50°C ( +50°F to +122°F )|
|Supply Voltage||2.0 - 3.8 VDC|
|Battery Life||At 1 hour heartbeat setting, coin cell battery will last up to 4 years. **|
|Enclosure Technology||Monnit PinchPower™ Wireless Sensor Enclosures|
ALTA 868 MHz Specifications
|Operating Frequency||868 MHz Operating Frequency|
|Certifications||CE Certified. 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.|
|Security||Encrypt-RF® (Diffie-Hellman Key Exchange + AES-128 CBC)|
|Device Range||Device Range Up to 1,200 ft. non-line-of-sight, wireless device range*|