Nivus NivuFlow 750, Instruction Manual

Page: 43 / 162

Installation and Connection
NFM 750 - rev. 03 / 27.05.2020 page 43
28 (T-Shape) Antenna for GPRS Data Remote Transmission
The accompanying T-Shape antenna is required for data remote transmission via GPRS.

Installation and connection procedure:
1. Plug antenna cable into the socket on the unit (Fig. 28-1) and tighten the screw
joint manually.
Fig. 28-1 Connection GPRS Antenna
2. Install the antenna at the highest possible position of the manhole or on the
dust pan.
Note:
The T-Shape mobile communications antenna shall be installed in such a way
that no persons are permanently (more than 6 minutes) present in a distance of
less than 25 cm from the antenna.
As soon as the instrument operates correctly even shorter distances do normal-
ly not mean a danger to public health since the unit transmits only briefly on the
mobile communications interface. As a precautionary measure this distance
shall be complied with anyway.
3. If the unit is installed in a manhole close the manhole cover to verify that the da-
ta transmission works correctly even with the cover closed.
4. Set up a test connection using the communication parameter menu (see chap-
ter “39 Parameter Menu Communication”, >Modem state</>Test connection<)
to verify data transmission. If the connection is poor change the antenna posi-
tion until the data transmission is sufficient.