Lutron Electronics PCO-350 User manual
0 to 1000 PPM, alarm setting, pen type
CO METER
Model : PCO-350
Your purchase of this
CO METER marks a step
forward for you into the
field of precision
measurement. Although
this METER is a complex
and delicate instrument,
its durable structure will
allow many years of use
if proper operating
techniques are
developed. Please read
the following
instructions carefully
and always keep this
manual within easy
reach.
OPERATION MANUAL
TABLE OF CONTENTS
1.FEATURES.................................................................1
2.SPECIFICATIONS.......................................................1
2-1 General Specifications.......................................... 1
2-2 Electrical Specifications........................................
.
2
3.FRONT PANEL DESCRIPTION.....................................
.
3
3-1 CO Sensing Head.................................................3
3-2 Power Button......................................................
.
3
3-3 Hold Button.........................................................3
3-4 Alarm Button................................................. 3
3-5 LCD Display.........................................................3
3-6 Battery Compartment/Cover.................................3
4.MEASURING PROCEDURE..........................................
.
4
4-1 CO measurement.................................................4
4-2 Data hold............................................................ 4
4-3 CO Alarm setting.................................................
.
4
4-4 Auto power off....................................................
.
5
4-5 Set the Temp. unit ( , ) with default..............℃℉ 5
4-6 Zero adjustment.................................................. 5
5.BATTERY REPLACEMENT...........................................
.
6
6. CO value via HEALTH INFORMATION.........................
.
6
1. FEATURES
* Two function : CO ( Carbon monoxide ), Temperature.
* CO range : 0 to 1,000 PPM x 1 PPM.
* Temperature. : 0 to 50 , /℃℃℉
* CO measurement with fast response time.
* High repeatability and high accuracy.
* Pen type, easy to carryout and operation.
* CO function with alarm setting.
* Data hold function for freezing the desired value
on display.
* Microprocessor circuit assures maximum possible
accuracy, provides special functions and features.
* Auto shut off function to prolong the battery life.
* Operates from DC 1.5V ( UM4/AAA ) x 4 PCs batteries.
* Durable and compact ABS-plastic housing.
2. SPECIFICATIONS
2-1 General Specifications
Circuit Custom one-chip of microprocessor LSI
circuit.
Display LCD size : 28 mm x 19 mm.
Measurement CO( Carbon dioxide ),
Temperature
Unit CO PPM
Temp. ,℃℉
Sensor Type CO Electrochemical
Temperature Thermistor
Temperature Automatic temp. compensation for
Compensation CO measurement.
Alarm Setting For CO measurement only.
Data Hold Freeze the display reading.
Sampling Time Approx. 1 second.
Power off Auto shut off saves battery life.
1
Zero Build in zero button for offsetting
the zero value
Operating 0 to 50 .℃
Temperature
Operating Less than 80% R.H.
Humidity
Power Supply DC 1.5 V battery ( UM4/AAA ) x 4 PCs.
Power Current Approx. DC 4.0 mA
Weight 194 g/ 0.43 LB.
Dimension 180 x 40 x 40 mm (7.1" x 1.6" x 1.6")
Accessories Instruction manual......................1 PC
Included Soft carrying case ( CA-52A )......
.
1 PC
2-2 Electrical Specifications (23±5 )℃
CO ( Carbon dioxide )
Range 0 to 1,000 PPM
CO Resolution 1 PPM
*
Carbon
Accuracy ± ( 5% + 2 PPM )
monoxide
Response < 30 seconds
time *
Repeatability < 2%
Zero drift in < 5 PPM
long term
Sensitivity < 5% per year
drift
*
The response time value is specified to reach
the 90% reading value.
Temperature
Range 0 to 50 ,32 to 122 .℃℃℉ ℉
T
emperature Resolution 0.1 degree.
Accuracy ℃± 0.8℃
℉±1.5 .℉
@ Above specification tests under the environment RF Field Strength less than 3
V
/M & frequency less than 30 MHz only.
2
3. FRONT PANEL DESCRIPTION
Fig. 1
3-1 CO Sensing Head
3-2 Power Button
3-3 Hold Button
3-4 Alarm Button
3-5 LCD Display
3-6 Battery Compartment/Cover
3
4. MEASURING PROCEDURE
4-1 CO measurement
1)Power on the meter by pressing the " Power Button "
( 3-2, Fig. 1 ) once,
* Press the " Power Button " once again will power
off.
2)Locate the " CO sensing head " ( 3-1, Fig. 1 )
to the position that intend to make the measurement.
The upper Display ( 3-5, Fig. 1) will show the CO
value in the unit of " PPM ". The lower Display ( 3-5,
Fig. 1) will show the Temperature ( Air Temp. ) value
in the unit of " " or " ".℃℉
4-2 Data hold
1)During the measurement, press the " Hold Button "
( 3-3, Fig. 1 ) momentarily to hold the measured
value. The LCD will show a " HOLD " symbol.
2)Press the" Hold Button " once again to release the
data hold function.
4-3 CO Alarm setting
Press the " Alarm Button " ( 3-4, Fig. 1 ) once in sequence
will present the Alarm setting value on the Display. Until
the desired Alarm value show on the Display, release the
" Alarm Button ", wait one second the Display will return to
normal screen. If the measurement CO value > Alarm
setting value, the Beeper will sound continuously.
* The Alarm setting value are :
25 PPM, 50 PPM 100 PPM, 200 PPM, 300 PPM, 400 PPM
500 PPM and OFF.
* If set the Alarm setting value to " OFF ", the Alarm
function will switch to " OFF " ( disable ).
4
4-4 Auto power off
In order to prolong the battery life, the instrument
has "Auto Power Off " function. The meter will
switch off automatically if no buttons are pressed
for around 10 minutes.
4-5 Set the Temp. unit ( , ) with default℃℉
1)Power OFF the meter.
2)Press the " Hold Button " ( 3-3, Fig. 1 ) continuously,
use another finger power ON the meter ( press the "
Power Button " once ), until the Temp. unit ( or )℃℉
is presented on the Display then release the " Hold
Button ", the Temp. unit will change From to ( or℃℉
to ) with default.℉℃
4-6 Zero adjustment
Put the meter into the clean air environment ( not
contain any CO value ), power on the meter by
pressing the " Power Button " ( 3-2, Fig. 1 ), wait
about 30 seconds to warm up the meter.
If the display not show " Zero " CO value, then pressing
" Alarm Button " ( 3-4, Fig. 1 ) continuously at
least five seconds will offset the display value and
show " 0 PPM ".
* The zero adjustment procedures are effected only
existing Display value is within 10 PPM.
5
5. BATTERY REPLACEMENT
1)Replace the batteries when the left corner of the LCD
displays the low battery icon " ".
2)Prepare 4 fresh 1.5 V ( UM4, AAA ) batteries.
3)To change the batteries, open ( rotate clockwise direction )
the " Battery Cover " ( 3-6, Fig. 1 ).
4)Make sure the " Battery cover " (3-6, Fig 1) is secured
after changing the batteries.
6. CO VALUE VIA HEALTH
INFORMATION
0 to 1 PPM General environment
9 PPM Max. exposure time : 8 hours
* United States Environmental Protection Agency
35 PPM Max. exposure time : 1 hour
* United States Environmental Protection Agency
50 PPM Max. exposure time : 8 hour
* OSHA
100 PPM Max. exposure : 100 minutes
* Circulation air * UL2034
200 PPM Headache, tired : Two to three hours
Max. exposure : 35 minutes
* UL2034
400 PPM Headache, tired : One to two hours
Harm the life : Three hours
Max. exposure : 15 minutes
* UL2034
800 PPM Headache, tired : 45 minutes
Death : Two to three hours.
1600 PPM Death : One hour.
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61001-PCO350
Table of contents
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