Longrun LRF-3000S - Powering on

LRF-3000S Ultrasonic Transit-time Flow meter
- 7 -
DN-
Downstream sensor - Blue
OCT OUT+
OCT Output
OCT OUT-
I OUT+
40~20mA Output
I OUT-
AI1
Analog Signal Input ( Only Energy Meter )
AI2
GND
TX
RS232 Output
RX
GND
A
RS485 Output
B
IN1+
Temperature sensor water inline +
IN1-
Temperature sensor water inline -
GND
Temperature sensor water inline grounding
IN2+
Temperature sensor water outline +
IN2-
Temperature sensor water outline -
GND
Temperature sensor water outline grounding
Warning
Wire when it is power-off. Reliable grounding must be taken for the instrument before installation
and use.
Use either AC or DC power supply. Do not connect them both at the same time.
2.2. Powering on
As soon as the flow meter is switched on, the system will run automatically according to the last input parameters.
If the installation is accomplished when system is switched on, gain adjustment can be monitored in Window M04.
After code "*R" are displayed on the upper right corner of the screen, the system will activate the normal
measurement condition automatically. It is indicated by code "*R" on the upper left corner of the screen.
If it is the first time to use or install on a new site, the customer need to input the new installation site parameters.
Any parameters which are set by user will be saved permanently until they are changed by the user.
When the user modifies the parameters and removes the transducers, the meter will recalculate automatically, and
operate normally with the parameters.
The flow meter can always complete all tasks at the same time. The tasks (Including measurement, output, etc)