deZem HarvyLR-360 User Manual And Technical Data - Page 6

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User manual IoT sensor HarvyLR

Name

Type

Isec (min)

Isec (max)

Meas. Counter

Last upload

Temp

Power Loss?

5 Installation

5.1 First time charging of HarvyLR

Prerequisite: HarvyLR is set up on a LoRaWAN server (e.g. deZem IoT platform, i.e. deZem.io).

For initial charging, we recommend connecting the HarvyLR to the computer via the optional USB adapter cable.

As soon as values are transmitted from the sensor to the LoRaWAN server, the HarvyLR is sufficiently charged.

The charging time is max. 6 min. when using the USB adapter cable.

Disconnect the HarvyLR from the computer and remove the USB adapter cable.

Alternatively, the sensor can also be connected directly without charging beforehand, as described in the next sec-

tion. In this case, approx. 2 mAh are required for charging. Depending on the primary current, it may take a different

amount of time until the HarvyLR transmits values for the first time.

5.2 Connecting the sensor

Connect the HarvyLR to the appropriate deZem clamp-on current transformer for an RMS current measurement

or to the adapter cable (for 4–20 mA signals). The sensor housing can be operated freely suspended or fixed

with cable ties.

Bytes

Description

uint16

19–20

Minimum secondary current since

last LoRaWAN uplink package; sec-

ondary current CT in 1/100 mA

uint16

21–22

Maximum secondary current since

last LoRaWAN uplink package; sec-

ondary current CT in 1/100 mA

uint16

23–24

Number of measurements since last

LoRaWAN upload

uint16

25–26

Seconds since last upload/duration of

creating average value; Time in sec-

onds since last uplink

int16

27–28

Temperature in 1/10 °C; nRF52832

temp sensor +-5°C accuracy;

uin8

1= Power Loss detected

0 = No Power loss detected;

when Isec < 0.75 mA

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Example

Value range

0x000f 15 Meas-

x (uint32)

urements since

last

uplink

x seconds