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Inserting batteries, changing batteries
• If the battery comes already inserted and connected, the meter is switched on by briefly
pressing the I/O button " " (6).
• If you need to insert or change the battery remove the rubber jacket (1). You can remove the
meter by pushing on the back of the housing surface with the sensor (7).
• Open the battery compartment by undoing the screw on the battery compartment cover and
then remove the cover.
• Connect the battery clip with a 9 V block battery. Observe the correct polarity.
• Insert the 9 V block battery into the battery compartment and close it again. Insert the meter
into the rubber jacket.
• Change the battery when the display contrast sharply decreases or the "
A dead battery can cause malfunctions, so you should replace the battery in time. Dead bat-
teries can leak and may damage the product and thus resulting in loss of warranty!
For operational safety reasons, use only disposable batteries; do not use recharge-
able batteries.
Operation
If the display is covered by a protective film, remove it.
a) On/Off switch
Switch on the meter by pressing the I/O " " button (6) briefly. All display segments flash briefly
(not all segments will be used as the display is also used for other meters). Then the meter per-
forms a calibration; the count-down from "10" to "0" is displayed. If the calibration is successful,
the meter beeps and the normal indicators on the display are shown.
Attention, important!
The meter may only be switched on and calibrated in a CO-free environment. If
this is not followed, the meter may not function properly which may generate other
hazards!
That is why you should not switch-on and calibrate the meter at the place where you
intend to perform the measurement.
If need to recalibrated he meter again, switch it off and then on again, see above.
Press the I/O button " " (6) to turn the device off.
The meter switches off automatically after 15 minutes to save energy (except when
in metering mode).
b) Selecting the functions
Briefly press the "MODE" button (4) to select the various functions:
• Metering mode (perform measurement)
The display shows "CO", the current measured value and „ppm". This mode allows for con-
tinuous measurements and the measured value is updated in the display.
Similar to a Geiger counter, the meter emits sound signals (the higher the reading, the more
beeps). You can switch these sound signals off (see description in the section "Alarm sound
mode" below).
The backlight is turned on or off by holding down the "SEL" button a bit longer.
• Maximum mode (display of the maximum measured value)
The display shows "CO MAX REC" and the maximum CO value (in ppm) measured in meas-
uring mode.
When you turn off the meter, the stored maximum value is cleared.
• Memory display mode (show stored readings)
The display shows "CO MEM" and the number of the memory (0 ... 9) as well as the CO value
stored in the memory (in ppm).
By briefly pressing the "SEL" button (5), you can select one of the 10 memories (displayed in
the upper right corner "0" ... "9").
• Memory mode (saving measured values)
The display shows "CO REC" and the number of the memory (0 ... 9).
By briefly pressing the "SEL" button (5), the current measured value is stored in the currently
selected memory. After that the memory number increases by one.
If you want to store the measured value in a specific memory, select first the memory number
within the memory display mode and then switch to the memory mode using the "MODE"
button.
• Alarm mode (beep)
The display shows "CO MAX" and a CO value of 30 ppm.
If the current reading is more than 30 ppm and less than 200 ppm, the meter will alert you and
beeps. If the reading exceeds 200 ppm, the meter beeps continuously.
In both cases, the LED (3) lights up red.
Press and hold the "SEL" button (5) for eight seconds to enter manual zeroing. The value "0"
on the display flashes for a few seconds and then the meter beeps and returns to measuring
mode.
Attention, important!
The meter may only be calibrated in a CO-free environment. If this is not followed,
the meter may not function properly which may involve other hazards!
• Measuring time mode (displays the measuring time)
The display shows "CO TIME" and the measuring time elapsed so far. This is automatically
reset when the meter is switched off.
Power save function is disabled in this mode.
• Alarm tone mode (to turn beeps on/off)
The display shows "on" or "off " in this mode. The meter's tone signal is switched on ('on') or
off ('oFF') by briefly pressing the "SEL" button.
For safety reasons, the icon "
alert you that the sound signal has been switched off.
c) Power-saving function
" icon appears.
The meter switches off automatically after 15 minutes to save energy (except when in metering
mode).
Cleaning
• Turn off the measurement device before every cleaning.
• Use a dry, lint-free cloth to clean the product.
• Never use abrasive cleaning agents, rubbing alcohol or other chemical solutions, since these
could damage the casing or even impair operation.
Disposal
a) Product
Electronic devices are recyclable and do not belong in the household waste. Dis-
pose of an unserviceable product in accordance with the relevant statutory regula-
tions.
Remove any inserted battery and dispose of it separately from the product.
b) Batteries/rechargeable batteries
As the end user, you are required, by law, (Battery Ordinance) to return all spent batteries/
rechargeable batteries; disposal of them in the household waste is prohibited.
Batteries/rechargeable batteries contain harmful materials and are labelled with the
symbol shown to indicate that disposal in the household waste is forbidden. The
symbols of the critical heavy metals are: Cd=cadmium, Hg=mercury, Pb=lead (the
marking can be seen on the battery/rechargeable battery, e.g., underneath the re-
fuse bin symbol shown on the left).
You can return your used batteries/rechargeable batteries free of charge at the official col-
lection points of your community, in our stores, or at places where batteries or rechargeable
batteries are sold.
That way you fulfil your statutory obligations and contribute to the protection of the environ-
ment.
Technical data
Operating voltage ................................. 1x 9 V block battery
Power consumption .............................. max. 10 mA when on, ~5 µA when off
Measurement range ............................. 0 to 1000 ppm CO
Measurement accuracy cannot be guaranteed, if higher values are used.
Resolution ............................................. 1 ppm
Accuracy .............................................. ± 5% or ± 10 ppm (ranging from 0 to 1000 ppm)
Sensor type ......................................... electrochemical CO measuring cell
Sensor life ............................................. 3 years (standard)
Warm-up time ....................................... <2 s
Operation conditions ............................. 0 °C to +50 °C, max. 90% relative air humidity,
Operation conditions ............................. -10 °C to +60 °C, max. 80% relative air humidity,
Dimensions ........................................... 166 x 63 x 42 mm (L x W x H)
Weight .................................................. approx. 230 g (with battery)
This is a publication by Conrad Electronic SE, Klaus-Conrad-Str. 1, D-92240 Hirschau (www.conrad.com).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming, or the capture in
electronic data processing systems require the prior written approval by the editor. Reprinting, also in part, is prohibited.
This publication represent the technical status at the time of printing.
© Copyright 2018 by Conrad Electronic SE.
" is shown in the display when the alarm is switched off to
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