Monnit ALTA, ALTA WirelessCarbon Monoxide Sensor, ALTA Wireless Temperature Sensor, ALTA Wireless Carbon Dioxide Sensor User Manual
by
ALTA Wireless 150 Amp Current Meter
User Guide
Table of Contents
I. ABOUT THE WIRELESS 150 AMP AC CURRENT METER 1
ALTA WIRELESS 150 AMP AC CURRENT METER FEATURES 1
EXAMPLE APPLICATIONS 1
2
2
III. REGISTRATION
REGISTERING A CURRENT METER
IV. SETTING UP THE 150 AMP AC CURRENT METER
INSTALLING BATTERIES
V. SENSOR OVERVIEW
MENU SYSTEM
SUPPORT
WARRANTY INFORMATION
PAGE II
2
3
3
4
4
6
6
II. CURRENT METER SECURITY
CURRENT METER COMMUNICATION SECURITY
DATA SECURITY ON THE GATEWAY
iMONNIT SECURITY 2
MOUNTING THE SENSOR 5
ANTENNA ORIENTATION 5
13
13
CERTIFICATIONS 15
I. ABOUT THE WIRELESSS 150 AMP AC CURRENT METER
The ALTA wireless AC Current Meter measures the RMS current of an alternating current
(AC) system using a current transformer (CT) that wraps around the “hot” wire of a two wire
(hot, common, ground(optional)) power system. The sensor reports Minimum RMS current,
maximum RMS current, average RMS current, and amp hours to the iMonnit system. The
iMonnit system is capable of generating watt hour or kilowatt hour readings as well.
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ALTA WIRELESS 150 AMP AC CURRENT METER FEATURES
• Wireless range of 1,200+ feet through 12+ walls *
• Frequency-Hopping Spread Spectrum (FHSS)
• Interference immunity
• Power management for longer battery life **(12+ years on AA batteries)
• Encrypt-RF® Security (Die-Hellman Key Exchange + AES-128 CBC for sensor
data messages)
• Onboard data memory stores up to hundreds of readings per sensor:
- 10-minute heartbeats = 3.5 days
- 2-hour heartbeats = 42 days
• Over-the-air updates (future proof)
• Free iMonnit basic online wireless sensor monitoring and notication system to
congure sensors, view data and set alerts via SMS text and email
* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting frequency and other variables. Other power options are also
available.
EXAMPLE APPLICATIONS
• Current Monitoring
• Current Usage
• Amperage Monitoring
• Amp Hour Meter
• Measures amp hours, max RMS current, min RMS current, and average RMS current
• Two dierent current transducers available:
• Low Current: 0-20 amp
• High Current: 0-150 amp
• Capable of generating watt hour or kilowatt hour readings using iMonnit
• Data logging for accumulated amp hour readings
• Can notify based on current levels or changes in current levels
• Simple and safe installation of current/power
measurement hardware, no rewiring required
To measure current, clip the CT around only a single wire of the AC system (clipping around
a hot and neutral wire at the same time will result in 0 current readings). After the sensor
powers on and connects to the gateway it will begin taking measurements based on the
averaging interval (5 seconds default). It will report data to iMonnit every heartbeat or if the
current goes outside of the aware thresholds set in iMonnit. The sensor reports amp hours,
max RMS current, min RMS current, and average RMS current. iMonnit can also generate
watt hour or kilowatt hour readings if a default RMS voltage is set in iMonnit.
iMONNIT SECURITY
iMonnit is the online software and central hub for conguring your device settings. All
data is secured on dedicated servers operating Microsoft SQL Server. Access is granted
through the iMonnit user interface, or an Application Programming Interface (API)
safeguarded by 256-bit Transport Layer Security (TLS 1.2) encryption. TLS is blanket of
protection to encrypt all data exchanged between iMonnit and you. The same encryption
is available to you whether you are a Basic user of Premiere user of iMonnit. You can rest
assured that your data is safe with iMonnit.
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II. CURRENT METER SECURITY
The ALTA Wireless 150 Amp AC Current Meter has been designed and built to securely manage data from sensors monitoring your environment and equipment. Hacking from botnets
are in the headlines, Monnit Corporation has taken extreme measures to ensure your data
security is handled with the utmost care and attention to detail. The same methods utilized by
nancial institutions to transmit data are also used in Monnit security infrastructure. Security
features of the gateway include tamper proof network interfaces, data encryption, and bankgrade security.
Monnit’s proprietary sensor protocol uses low transmit power and specialized radio
equipment to transmit application data. Wireless devices listening on open communication
protocols cannot eavesdrop on sensors. Packet level encryption and verication is key
to ensuring trac isn’t altered between sensors and gateways. Paired with best-in-class
range and power consumption protocol, all data is transmitted securely from your devices.
Thereby ensuring a smooth, worry-free, experience.
CURRENT METER COMMUNICATION SECURITY
Monnit current meter to gateway secure wireless tunnel is generated using ECDH-256
(Elliptic Curve Die-Hellman) public key exchange to generate a unique symmetric key
between each pair of devices. Meters and gateways use this link specic key to process
packet level data with hardware accelerated 128-bit AES encryption which minimizes
power consumption to provide industry best battery life. Thanks to this combination,
Monnit proudly oers robust bank-grade security at every level.
DATA SECURITY ON THE GATEWAY
The ALTA gateways are designed to prevent prying eyes from accessing the data that is
stored on the sensors. Gateways do not run on an o the shelf multi-function OS (operating
system). Instead they run a purpose specic real-time embedded state machine that cannot
be hacked to run malicious processes. There are also no active interface listeners that
can be used to gain access to the device over the network. The fortied gateway secures
your data from attackers and secures the gateway from becoming a relay for malicious
programs.
III. REGISTRATION
PAGE 3
If this is your rst time using the iMonnit online portal, you will need to create a new
account. If you have already created an account, start by logging in. For instructions on
how to register for an iMonnit account, please consult the iMonnit User Guide viewable at
monnit.com/support/documentation.
REGISTERING THE CURRENT METER
You will need to enter the Device ID and the Security Code from your 150 Amp AC Current
Meter in the corresponding text boxes. Use the camera on your smartphone to scan the
QR code on your sensor and gateway. If you do not have a camera on your phone, or the
system is not accepting the QR code, you may enter the Device ID and Security Code
manually.
• The Device ID is a unique number located on each device label.
• Next you’ll be asked to enter the Security Code (SC) on your device. A security
code will be all letters and must be entered in upper case, no numbers. It can also
be found on the barcode label of your gateway.
When completed, select the “Submit” button.
IV. SETTING UP YOUR 150 AMP AC CURRENT METER
INSTALLING BATTERIES
ALTA commercial current meters are powered by AA batteries. Industrial sensors need a
3.6V Lithium battery supplied from Monnit or another industrial battery supplier. Monnit
encourages customers to recycle all old batteries.
When you are nished adding the sensor to your account, the next step is to insert the
battery. The type of battery you use will depend on the category of your sensor. ALTA
Wireless 150 Amp AC Current Meter will either be powered by commecial coin cell, AA, or
an industrial battery.
AA Batteries
The standard version of this current meter is powered by
two replaceable 1.5 V AA sized batteries (included with
purchase). The typical battery life is 10 -12 years.
This current meter is also available with a line power
option. The line powered version of this meter has a
barrel power connector allowing it to be powered by
a standard 3.0–3.6 V power supply. The line powered
version also uses two standard 1.5 V AA batteries as
backup for uninterrupted operation in the event of line
power outage.
Power options must be selected at time of purchase,
as the internal hardware of the meter must be changed to support the selected power
requirements.
Place batteries in the device by rst taking the meter and sliding the battery door open.
Insert fresh AA batteries in the carriage, then shut the battery door.
Complete the process by opening up iMonnit and selecting Sensors from the main
navigation menu. Verify that iMonnit is showing the meter has a full battery level.
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