Knob Switch Operations - Mastech MS2205 Operation Manual

1. Current clamp size: Φ 50 mm
2. HOLD button :DATA HOLD button; press down
HOLD button, and the last reading will be held and
displayed on the display, and "HOLD" symbol will be
shown; press HOLD button again, and the meter will
switch back to normal measurement mode.
3. Function-switching knob :Rotation knob for selecting
different measuring function
4. Function-selection button: Button for operating the
measuring functions
5. Input terminal
Terminal Function
Input terminal for measuring the first
phase; use yellow test probe for
V1
connection.
Input terminal for measuring the 2nd
phase; use black test probe for connection.
Common terminal: ground input terminal
COM/V2
(earthing) for all measuring functions; use
black test probe for connection.
Input terminal for measuring the 3rd
V3 phase; use green test probe for
connection.
6. LCD display :4-digit digital display; 7-section LCD
for displaying measurement operation function, test
result, and unit sign.
7. Trigger :Press down the trigger, and the clamp will
open; release it, and the clamp will close.
8. RS232C interface: Dedicated optical-electrical
interface wire is used for online communication with
05
PC, as well as for recording data and data trend curve
in PC.

Knob Switch Operations

The function-switching knob is used for powering-on and
for switching to any measurement function in the
following table.
Sign Knob position
Powering-off position
OFF
KW
Active power position
(1 phase)
Single-phase/phase-
Φ
angle Test position
(1 phase)
KW/Φ 3-phase apparent
(3 phase) power position
AC-Current
harmonics test
A
position
AC-voltage
harmonics test
V
position
Note:
When the meter is automatically powered off, be sure to
switch the knob to "OFF" position; turn on the meter after
5 seconds.
Functions
For powering-off
For measuring
active power, etc.
For measuring phase
angle, such as cos Φ
and sin Φ, etc.
For measuring 3-
phase apparent power,
etc.
For measuring
AC-current
harmonics, etc.
For measuring
AC-Voltage
harmonics, etc.
06