Dwyer 450 SERIES User manual

Brand: Dwyer

Model: 450 SERIES

Type: User manual

This manual is also suitable for

Bulletin

LJ-;'!:

Series 450 Carbon Monoxide Monitor

Instructions and Operation

DWYER

INSTRUMENTS,

INC.

IPhone: 219/879-8000 www.dwyer-instcom

P.O.

BOX 373 • MICHIGAN CITY, INDIANA

46361

U.S.A.

Fax:

219/872-9057 e-mail: infoOdwyer-instl

Lit-by-Fax: 888/891-4963

'NOTE: This instrument

shipped with a new

bat-

. However, the

otective plastic cap

stalled on

the

bat1e

ry terminals. This cap must be removed and the

bat1e

nnected to the

bat1e

ry terminal before the

stru-

ment will functio

The

Series 450 CO Monitor measures ca

bon monoxide from levels 0 to 2000 PPM. The

unit

equipped with audible and v

isual

indica-

tors of CO concentration. The beacon indica-

tor flashes

correspondence to the

level

detected

the

air.

Perfect for

HVAC

appli-

cations such

servicing heaters, furnaces,

appliances and for general building inspection.

BATTERY INSTALLATION

Remove two screws holding the bottom end-

cap labeled BATfERY

place and remove

it.

Connect the battery to the enclosed battery

ip observing correct polarity.

sert the bat-

tery

the case.

careful not to trap the

wires between the case or foam pad, which

retains the battery.

cou

make

difficult

to install the battery or remove

later for

replacement.

sure the rubber gasket

properly seated

the gasket channel and

PHYSICAL

DATA

Range:

0-2000

PPM .

Resolution: 1 PPM.

Accuracy: (using 200 PPM calibration

+/-

of reading +/ - the accuracy of thl

calibration gas, at the time of calibration.

Response Time: <30 seconds to 90% (

reading.

Operating Temperature: 32 to 104°F

(

0-40

C).

Humidity Conditions: 0-90% Relati

Humidity Non Condensing.

Adjustments: Zero and Span

via

keypaf

Power*: 9V Battery.

Battery Life:

500

hours typical

Case Material: Anodized Aluminum

wiH

plastic end caps.

Dimensions: 6.8"

2.8" W x 0.9" D

except

add

D for sensor cover.

(172.7 x 71.1 x 22.9 mm) (12.7mm).

Sensor Type: Field replaceable

Electrochemical Cel/.

Sensor Life: 2 years minimum.

Alarms: 2 Alarms, with audible and v

isu;

replace

the

endcap. Note that

the

endcap

only

fit

one way because

the

holes

are

sli

off-center.

ace the "

shaped wrist strap

one of the screw recesses and replace

screw.

not overtighten. Attach

the

strap to

the

lip

Use only 9

Volt

alkaline type batteries sucl

Duracell® MN 1604, or Everead

522,

equivalent. Zinc-carbon types, often

lab,

Heavy-Duty

are

not recommended becaus

their shorter

life

and increased potential

leakage. Alkaline batteries

are

a better v

because they typically last up to three

til

longer

this device.

Ourace!I,

reg

istered trademark of Ouracell

USA.

OMs

race

eready is a

regi

stered trademark of Eveready

ttery

Compa.

LOW BATTERY INDICATION

When the 9V battery

reach

ing

the end of it's

life,

the "LOW B

AT"

indicator

on the display will turn

on.

FUNCTIONS

ACCESSED DIRECTLY

THROUGH

KEYPAD

On Off Operation:

Pressing

iii

turns power on, pressing again turns power o

. The unit wi

automa

y shut o

if there is no act

y for 20 minutes. To defeat

to-

matic shut off, wh

turning the

it on press and hold the

key down

and th

press

iii

Display Backlight:

Press

to turn the backlight

on,

again to turn the backlight off. The back-

lig

ht w

l automatically turn off after 2 minutes to conserve battery power.

Display Hold:

Pressing and releasing

iii

ill

freeze the displ

and illuminate the "HOL

nunciator.

"HOLD"

-..

HOLD

],-,,-,

LUU

Annunciator

PPM

Pressing

iii

again

wil

l extinguish the "HOLD" annunciator and the displ

ill

again be updated.

Store a Reading In Memory:

Up to 25 CO readings may be stored

memory. Pressing

will

store

the presently displayed value

memory. The active memory location wi

displayed

the lower left, starting initially with "1" . The MEM descriptor

will

on any time there

are

any values stored

memory.

L_I

MEM

PPM

Memory Location

-./

As each reading

saved, the memory location

advanced to the next locat

ion.

25 readings

are

stored

the memory location, it will begin at "1" agai

After a reading

stored, the display will

ret

the home position.

FUNCTIONS

ACCESSED

THROUGH

THE

How

to Use the Menu:

access the menu, press . to enter the menu mode. Continue pressing

• until the desired me

displayed. When the

strument is in

menu mode, the

iii

key will function as the "INCREMENT"

key,

and the

key will function as the "DECREMENT" key.

When the desired menu item

displayed, use the =and

keys to

modify the menu item to the desired value, then press

GIl to store the value

memory.

the GIlkey

not pressed, the origi

nal

menu value will be

memory and not changed.

exit the menu, scroll to t

home position. While

the menu mode,

activity

detected for 30 seconds, the display will auto-

matical

retu

to the home position.

Reading a Stored Value:

Index the menu until the lower displ

reads I

~,I:

e lower left displ

shows

the active memory location, upper displ

shows the memory

e. Use

=and

to sequence through t

memory loca

ons.

clear the

memory, press and hold

e GIl key for

five

seconds wh

this menu loca-

tion .

-,,-

1 Stored Value

"MEM" Descriptor

MEM

Memory

Storage Loca

:551:

=storage

Reading the Peak Value:

The Peak feature stores the h

hest

read

the monitor h

measured since the

last reset or Power

. At Power

PEA

reset to the present readin

view

the peak

ue,

index the menu until the lower left displ

reads

PEA.

When

PEA

displayed, pressing the GIl key will reset the value

the pres-

ent CO

ue.

ALARMS

The monitor

equipped with two alarms. Alarm 1

the lower alarm value, and

Alarm 2

the higher alarm value. Alarm 1

factory set 35 PPM, and Alarm 2

factory set to 200 PPM. When the displayed value reaches the alarm setting, the

appropriate alarm descriptor will turn

on.

The lowest setting of Alarm 1

limited to 35 PPM to avoid false alarms. Alarm

2 must

set a minimum of 100 PPM higher than Alarm 1 .

change

alarm setting, index the menu until the lower left display reads AL

1 or AL 2 and use the

II II

keys to set the desired alarm setting.

Press

the.

key to store the setting.

The monitor

equipped with both audio and visual alarms. When Alarm 1

reached, the audio alarm will beep and the visual alarm will flash. The speed of

the audio beeping and visual flashing will increase until Alarm 2

reached. At

this point the audio and visual alarms

will

be on continuously. The Audio and

Visual alarms

are

factory set to be

on.

turn the Visual alarm off, index the

menu until ALF

(Alarm

Flasher)

displayed

the lower left display. Then use the

key to turn the Visual alarm

off.

The upper display will

read

OFF.

Then

press • to store the change.

turn the Visual alarm back on, press the

then press

to store the change. The Audio alarm may

turned off or

the same way

the Visual alarm by indexing the menu until

the lower left display reads ALb (Alarm Beeper).

Zero Adjustment:

Place the instrument

free

environment. Allow the instrument to stabilize

least three minutes. The instrument should

read

0 PPM.

reads>

10 PPM,

the sensor

bad and should

replaced.

reads 1 to 9 PPM, the zero may

adjusted

follows:

Index the menu to

CALO

Press the

and.

keys simultaneously. Index the menu back to the

home position. The display should now read

0 PPM.

CALIBRATION

IMPORTANT NOTE: Electrochemical

sensors slowly lose sensitivity over

time. A quick "bump test" should be performed with CO gas before each usage

to ensure proper instrument performance.

also recommended to perform

a calibration

four month intervals to guarantee proper operation. A replace-

ment sensor should be

stalled if the unit can no longer be calibrated.

order

to perform a calibration, a calibration kit

required. This

available from Dwyer

Instruments,

see

below to order.

CALIBRATION ACCESSORIES

A-405-1 Calibration Kit with Regulator: Includes Case, Regulator, Tubing

Adapter, A-405-2. For use with

Liter Gas

Tank

(not available from Dwyer

Instruments). The regulator has a fixed flow rate of 0.5 Umin.

a different

Calibration Kit

used, a flow meter

required that can verify setting the flow

rate correctly to

Umin.

A-405-2 Calibration Adapter: Adapter connects the regulator to the sensor

cover on the back of the CO Monitor.

A-450-3 Replacement Sensor

CALIBRATION PROCEDURE

Zeroing the Instrument:

important that the instrument

area with

zero concentration of CO gas.

Turn

the instrument on and allow

to stabilize for

three

(3)

minutes. Press

the"

key until the display reads

CALO.

The upper

display should

read

between 0 and 12.

the upper display reads above 12, the

sensor may

bad and should be replaced - refer to SENSOR REPLACE-

MENT.

Press the

and"

keys simultaneously. The display will momen-

tarily blink to show the value

has

been stored.

Refer to

FIG

"Calibration Kit Setup". Attach the regulator to the calibration

gas cylinder (make sure the valve

closed). Attach the hose from the calibra-

tion adapter kit to the regulator, then place the adapter cap over the sensor

housing on the back of the instrument.

NOTE: The regulator used with the Dwyer Instruments Calibration Kit has a

xed flow rate of 0.5 Liters/Minute.

a different calibration kit

used, make sure

the flow

set to approximately 0.5 Liters/Minute. A flow rate greater than 1

Liter/Minute

will

result

inaccurate reading.

3. Span Calibration: Turn on the valve on the regulator and allow gas

flow

for at least three minutes. Press the

lID key until the display reads

CALO.

Press and hold the

and enter keys for five seconds until the lower dis-

play reads CAL

Verify that the upper display reads between 125 and 400,

then press the

flit and

aID

keys simultaneously. The display will blink

show the calibration value has been stored.

the value

<125 or greater than

400, the sensor

bad needs to be replaced. Refer

"SENSOR REPLACE-

MENT".

Index the menu back

the home position. The instrument should read 200

PPM

+/-

1. CALIBRATION

GAS CYLINDER - 200

PPM

CO/AIR

[)

Push calibration adaptor

cap over sensor housing.

REGULATOR:

Fig. A

CALIBRATION KIT A-450-1

ADAPTER:

CALIBRATION KIT A-450-1

Adapter also available

seperately: Part Number A-450-2

SENSOR

REPLACEMENT

A replacement CO sensor is available from Dwyer Instruments.

Order part number:

A-450-3

Replacing

the

sensor

Refer to

FIG.

B Remove the

two

MTG screws.

Carefully remove the sensor cap.

Remove and discard sensor.

Remove shorting wire spring from pins on new sensor.

Carefully install new sensor into instrument. Re-install cap and mounting

screws.

New sensors must be recalibrated. Wait a minimum of

minutes after

installing a new sensor before calibrating the instrument. The instrument has

internal temperature compensation and the sensor must be at the same tem-

perature as the instrument to calibrate properly.

GASKET CAP MTG. SCREWS (2)

~j~

co SENSOR: A-450-3

WARNING!

Remove and discard spring

from pins before installation.

co MONITOR 450 SIDE VIEW

co MONITOR 450 REAR VIEW

Fig. B

----------------

Bulletin

0-25

SERIES 450 CALIBRATION LOG:

brate once every 4 month

Replace

nsor if

it can no long

be ca

brat

ed.

Date

Notes

uments, Inc.

Printed in U.S.A. 1/

FR#

08-443193-00

DWYER

INSTRUMENTS,

INC.

Phone

: 219/879-8000 www

.dwyer-inst.

com

P.o

BOX

373 • MICHIGAN

CITY,

INDIANA

46361

U.S.A.

Fax:

219/872-9057 e-mail: i

nfo@

dwyer-inst.com

L1t-by-Fax:

8881891-4963

Dwyer 450 SERIES User manual

Brand: Dwyer

Model: 450 SERIES

Type: User manual

This manual is also suitable for

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Dwyer 450 SERIES User manual

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Dwyer 450 SERIES User manual

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