Test Output - HYDROMETER EW7731 Série Instructions D'installation

English
· Passive; external power supply: 10...30 V DC
· Current loop 4 ... 20 mA,
where 4 mA = 0 value; 20 mA = programmed max. value
· Overload up to 20.5 mA, then fault current
· Errors are generated
at 3.5 mA or 22.6 mA
(programmable)
· Output values: power,
flow rate, tempera-
tures

6.7 Test output

The internal test output located on the side is intended for use by
test centres.
The manufacturer provides two special cables for this:
1. Volume test pulses
2. Energy test pulses
Other specifications (pulse value, pulse duration/break, pulse fre-
quency) can be obtained from the Inspection and Test Instruction.
Ensure that the temperature sensors (measuring resistors) are per-
manently connected when carrying out energy verification.
7. DISPLAY
To show the data generated by the integrator in the display, vari-
ous windows are provided as loop functions that can be called up
in succession to display the system information associated with
each window (e.g. energy amounts, water volume, running days,
water amounts, current temperatures, maximum values). The
energy meter has 6 different display loops: