modem is in the area of NB-Fi coverage, two messages will be received with a
payload, starting with numbers 59 and 51.
Alternatively, check for the messages in the WAVIoT Head-End System, at
https://hes.waviot.com/reports/bsmessages/. It could be helpful if you use the NB-Fi
modems for other applications but utility meters.
This functionality is available only for the owners of the modems or utility
management companies who provide the installation service.
3.2.2. Checking the operability of the water meters
Switch on hot and cold water in turn, check the operability of water meters
(mechanical counter wheels are rotating), and identify which meter is related to hot
water and which one to cold water.
To check the operability of the water meter pulse outputs, a multimeter must be
connected by setting the switch to the resistance measurement mode (buzzer mode)
in advance. This mode is usually marked by the "Diode" icon on the multimeter. Next,
turn on the water (with a non-installed meter, set the meter wings in motion with air
flow –imitation of water supply).
The reed contacts should close and the tester should display "0". If the water meter
reed switch is inoperable, "0" value will not be displayed on the multimeter.
Turn off the water in the taps so that the meters don't change the readings.
3.2.3. Installation procedure for modems
Fill in the Installation report with the modem number, name, modification, serial
number and resource type (cold water or hot water) of each water meter, current
meter readings and current time (time shall be specified down to one minute!), and
also pulse value printed on the water meter’s face plate, which indicates the output
value per pulse (i.e. pulse value = 1 that’s 1 pulse = 1 liter). If pulse value is absent
or unknown, the only way to know this value is to calibrate the NB-Fi BT-100 modem
(see p. 3.2.3.3) and then calculate the Pulse value factor based on the calibration
results (see p. 3.2.4.8).
Install the modem on the meters. For installation, the pair of pulse outputs of the
meters must be connected to the pair of the pulse inputs on the modem.
Modem calibration means synchronization of counted pulses with the number of
spilled liters transmitted to the WAVIoT MDM system. To start the modem calibration,
attach a magnet to the button with the gear icon on the body and wait for EXACTLY
5 flashes of the red light on the body.
Fill in the Installation report with the readings from the connected water meters at the
start of calibration. This is necessary for the proper setting of the initial readings for
the water meters in the WAVIoT MDM System.
After that the modem calibration starts, and the modem will send one or two
"Calibration" messages (depending on the number of data channels) and then up to
10 information messages for each data channel that used for Modem calibration and
also for evaluation of the connectivity stability.
After step 3.2.3.3, turn on hot and cold water at a good pressure so that at least 10
pulses are generated (for residential water meters with pulse value = 1 this means
10 liters of water which will pour out for 3 minutes). This step is important for the
correct calculation of the Pulse value factor.
