MODEL RX-8700 CONDENSED USER GUIDE
Note: Refer to the operating manual for more details.
1. Turning the power on
Hold down the POWER/ENTER button (three seconds
or more) until the buzzer beeps to turn the power on.
When "Filter Probe" is displayed, check that the filter
tube is connected and press the ENTER button. The
buzzer beeps twice and then the measurement
screen is displayed.
RX-8700 is started in H
2
S [high concentration]
measuring mode.
1. Check that the battery level is sufficient.
2. Check that there are no bends or holes in the gas sampling hose and filter tube.
3. Check that the filter in the gas sampling probe and filter
tube are free of dust or clogging.
4. Check the gas m (1) Relay tube + (2) Filter tube + (3)
Gas sampling hose + (4) Gas sampling probe in order to make
sure they are connected properly.
PT0E-1860
[Names of each part]
Usage
Inspections before use
4. Performing measurements
Measure the gas concentration from the measurement screen. Put the gas sampling probe close to the
measurement area.
Once gas concentration measurement starts, the gas monitor draws in measuring gas for a certain
period of time and then displays a concentration value as the measurement result.
5. Turning the power off
Press and hold the POWER/ENTER button until the buzzer beeps three times and the LCD display
turns off.
2. Performing air calibration
When performing air calibration in atmosphere, check the atmosphere for freshness before starting.
3. Switching the hydrogen sulfide measuring mode range
Use this to switch between H
2
S [high concentration] measuring mode and HC/O
2
/H
2
S
[low concentration] measuring mode.
Hold down the L/H button (about one second) and
release your finger when the buzzer beeps once.
To switch the measuring mode, check that the
hydrogen sulfide concentration is less than 100
ppm in the H
2
S [high concentration] measuring
mode first. Higher concentrations may cause
damage to the sensor.
H
2
S [high concentration]
measuring mode
HC/O
2
/H
2
S [low concentration]
measuring mode
(4)
(3)
(1)
(2)
LCD display
Alarm
window
Buzzer sound
opening
Alarm
window
Alarm window
Infrared port
PEAK/L/H
ESC button
POWER/ENTER
button
PUMP/
▽
button
△
/AIR button
[Air calibration procedure screen]
⇒
⇒
Press and hold the AIR
button on the measurement
screen.
Release your finger from the
AIR button when the screen
above is displayed.
The screen above is
displayed when air
calibration is completed.
(1) (2) (3)
