Hioki CM7290, Instruction Manual, Page: 9 / 80

5
Measurement Flowchart
Example of connection to devices installed in a measuring system
With the settings below, the unit will start up in the previously selected output mode
and begin generating output whenever the power is supplied through the external
power supply jack. This is the recommended way if the unit is connected to devices
installed in a measuring system.
See “2.5 Connecting to an External Device” (p. 31).
Display unit
2
1
- 4
1
- 3
Conductor to
be measured
1
-
1
Sensor
Connectable connector
JEITA RC5320A
Classification 3
(EIAJ RC5320A TYPE 3)
(Grip portion external
diameter not more than
φ 10 mm)
Measurement
circuitry
Measuring system
Power
supply
Output
1
- 2
1
Connections
Connect the devices as follows:
1. Sensor – to the conductor to be
measured
2. Display unit − to the sensor
3. Display unit – to the output destination
4. Display unit – to the (standalone DC
isolated) power supply
2
Setting
Configure the settings in the following
order:
1. Set the appropriate measurement
mode, output mode, or range
2. Set "Enable" or "Disable"
for zero adjustment at power-up
3. Save settings
(save the measurement mode settings
at power-up)
4. Set the keylock to "Enable"
(to avoid operational mistakes)
Measures against power outage
• If batteries have been installed in the unit, it will switch to battery power if power
from the AC adapter or external power supply (connected via the external power
supply jack) is interrupted and then continue to generate output as long as the
battery lasts. Once the external power supply is restored, the unit will switch back
to that power source.
• The displayed value or output may be affected by switching noise when the unit
switches from battery to AC adapter or vice-versa.
10
9
8
7
6
5
4
3
2
1
Appx.
Ind.