EOP-D73-001-7-002-05E
E.J. OZONE PRODUCTS
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(4) Functions of ozone analyzer
[1] Enclosure
The environmentally-resistant enclosure in tightly-closed structure protects the analyzer from
various measurement environments.
* Protection code: Equivalent to NEMA4x (IP65).
[2] Front door
The front door is opened to set the power switch to ON/OFF, operate the indicator, and
perform wiring and maintenance work.
* Close the door securely to maintain the protection code.
[3] Mounting bracket
Used to install the analyzer appropriately
[4] Handle
The handle is unlocked to open/close the front door, and locked to prevent the door from being
opened carelessly.
[5] Display window
Ozone gas concentrations and sample gas flow rate can be checked through this window
without opening the front door. The model can also be checked.
[6] Indicator
The indicator displays ozone gas concentrations as well as various settings and changes.
The operation of the analyzer can also be checked on the indicator.
[7] Flowmeter
Use the flowmeter to check the flow rate of the sample gas.
* The flowmeter varies depending on analyzers. See below for details:
• Scale range of the flowmeter for High Concentration Ozone Analyzer (ME810):
0 to 1 L/min.
• Scale range of the flowmeter for Off-gas Ozone Analyzer (ME820):
0 to 2 L/min. (with needle valve)
[8] Power switch (POWER SW)
Set the power switch to ON to supply power and start operating the analyzer. By setting the
switch to OFF, the power to the analyzer is interrupted and operation is stopped.
[9] Control printed circuit board (CNT PCB)
The control PCB amplifies each sensor signal and converts it to a digital signal.
[10] Relay input/output printed circuit board (RL I/O PCB)
The RL I/O PCB inputs/outputs each control signal and outputs a concentration signal (analog
output). The board is equipped with a power supply for the sample gas pump and the 3-way
solenoid valve.
[11] Power supply printed circuit board (P.S PCB)
A power terminal block for connecting AC power and fuses are mounted to the board along
with the power for turning on the low-pressure mercury lamp.
* Separated from each other to ensure safety.
[12] Power terminal block (TB1)
Power cables can be installed safely using the terminal block.
See “6.4.1 Connecting the power cable” for details.
[13] Analyzer output (contact signal) terminal block (TB1)
The control cable on the control side can be connected to the terminal block for concentration
alarm signals (ALARM 1/ALARM 2), measurement-in-progress signal (MEASUREMENT),
and analyzer error signal (ERROR).
See “6.4.2 Connecting the control cable” for details.
[14] Analyzer output terminal block cover
The cover protects the analyzer output terminal block.
[15] Analog output/analyzer input terminal block (TB2)
The signal cable on the control side can be connected to the analog output and zero contact
input terminal block.
See “6.4.3 Connecting the signal cable” for details.
[16] Analog output/analyzer input terminal block cover
The cover protects the analog output/analyzer input terminal block.
[17] Power cable fastening clamp
The clamp fastens the power cable to be connected to the power terminal block.
[18] Control cable fastening clamp
The clamp fastens the control cable to be connected to the analyzer output terminal block.
