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.
WARNING: Use caution when interfacing to the Monnit 0-20mA Current meter. Negative voltages, AC Voltages , DC Voltage exceeding 3.6V CAN DAMAGE the electronics of the wireless sensor. Monnit is not responsible for troubleshooting, replacing or reimbursing damages incurred by disregarding this warning.
* 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 Caibrated: 0.05mA|
|Conversion Time||228 µs|
|Full Scale Voltage||0 – 20 mA|
|Security||Encrypt-RF® (256-bit key exchange and AES-128 CTR)|
ALTA AA Specifications
|Battery Type||2 Replaceable AA 1.5 V Batteries|
|Dimension||4.375 in x 2.470 in x 1.12 in|
|Supply Voltage||2.0 – 3.8 V (2 x AA 1.5V Batteries or Optional Power Supply)|
|Battery Life||At 1 hour heartbeat setting, included AA batteries will typically last 6-8 Years. **|
|Max Operating Temperature Using AA Alkaline||-18°C to 55°C (0°F to 130°F)|
|Max Operating Temperature Using AA Lithium||-40°C to 60°C (-40°F to 140°F)|
|Optimal Battery Operating Temperature||+10°C to +50°C (+50°F to +122°F)|
ALTA 900 MHz Specifications
|Operating Frequency||900 MHz Operating Frequency|
|Certifications||Complies with Part 15 of the FCC Rules. (FCC ID: ZTL-G2SC1) Complies with Industry Canada standards. (IC: 9794A-G2SC1)|
|Device Range||Device Range Up to 1,200 ft. non-line-of-sight, wireless device range*|
|Security||Encrypt-RF® (Diffie-Hellman Key Exchange + AES-128 CBC)|
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