Acd 300 User manual

MODEL 300

INSTRUCTION MANUAL

FACTORY-SET POINT:

_______ PPM AirFlow_________

THIS INSTRUMENT GENERATES:

Bromine (Br2)

Chlorine (Cl2)

Chlorine Dioxide (ClO2)

HydrogenCyanide (HCN)

Hydrogen Sulfide (H2S)

Hydrogen (H2)

1775 S. Pantano Road, Suite 140 Tucson, Arizona 85710 U.S.A.

Telephone: (520) 290-2855 Fax: (520) 290-2860 E-mail: [email protected]

Advanced Calibration Designs, Inc.

Revision - 042898

ACD

Advanced Calibration Designs, Inc.

ACD

Instruction Manual

Model 300

Gas Generator

TABLE OF CONTENTS

I. General Description Page2

II. Start-Up Page4

III. Altitude Adjustment Description Page5

IV. Air Mode Page6

V. How to Generate Gas Page7

VI. CellUsage Page8

VII. How to change Altitude Setting Page9

VIII. How to Change Gas Concentration Page10

IX. LCD Warning Displays Page11

X. Accessory Items Available Page12

XI. Warranty Information Page13

Manufactured by:

Advanced Calibration Designs, Inc.

1775 S. Pantano Road, #140

Tucson, Arizona 85710 USA

Phone: 520 290 2855

Fax: 520 290 2860

[Blank Page ]

WARNING:

This instrumentconforms tothe protectionrequirements ofthe EC

DIRECTIVE 89/336/EEC onElectromagneticCompatibility(EMC),in

accordancewiththe provisions of Statutory Instrument 2372.

Thefollowing standards have beenapplied:

EN50081-1

EmmissionsStandard(ResidentialCommercial and Light Industry)

EN50082-1

ImmunityStandard(ResidentialCommercialandLightIndustry)

Two exceptions to this compatibility are:

Theunit should not be operated withthe charger attached.

The unit display is subject to corruption in areas containing high levels of

electrostatic dischare. While this will not effect the overall operation of

the unit, the unit must be restarted in an electrostatic free area to clear

the display.

Page 14

SUPPLEMENTAL WARRANTY

The generating cell, which is consumed during normal operation, has a

prorated warranty based upon usage. Repair / Replacement costs on the

model 300 are as follows:

For units less than one year from date of calibration:

Cell Repair /

Consumption Replacement

0-19% $ 0.00

20-29% $225.00

30-39% $250.00

40-49% $275.00

50-59% $300.00

60-69% $325.00

70-79% $350.00

80-89% $375.00

90-99% $400.00

100% $425.00

For units over one year from the date of calibration, normal repair

charges apply depending on the type of repair needed.

Prices effective 01/01/98. ACD reserves the right to change pricing without

notice. Please contact the factory for current pricing.

GENERAL DESCRIPTION

The Model 300 is a battery-powered, portable electrochemical gas generator

that may be used either intermittently or continuously. Fast warm-up time al-

lows the instrument to be turned off between remotely located sensors saving

battery life and avoiding generation of unwanted gas. The Model 300 uses the

following components to produce a precise gas/air mixture:

Internal micro pump

The pump draws in ambient air that is then scrubbed by a charcoal filter, ensur-

ing a fresh air supply.

Charcoal Filter

The charcoal filter element that is used to scrub the ambient air should be

replaced periodically, depending upon usage and background air conditions.

The element is unplugged from the outside of the instrument.

Electrochemical Generating Cell

The electrochemical generating cell contains an electrolyte solution and either

inert or consumable electrodes, depending upon the gas being generated. A

precise concentration of gas is produced when a known amount of current is

applied continuously to the cell. The gas permeates into an air chamber where

it is mixed with the cleaned air stream before exiting the instrument.

Electronic Flow Meter

An electronic flow meter, connected to a microprocessor, continuously moni-

tors and adjusts the air flow, ensuring the flow rate is constant and correct.

Rechargeable Nicad Battery

When fully charged, the battery provides 8-10 hours of operation. The Model

300 may also be operated continuously using the AC Adaptor.

Microprocessor-Based Circuitry and Digital LCD

When powered-up, the LCD identifies the generator with instrument and cell

serial numbers. The microprocessor reminds you when the generator was last

calibrated; provides remaining cell life and battery life; verifies gas output; and

allows the user to change gas concentrations if necessary. At any time, the cell

life, battery life and the ppm change mode may be accessed by the user.

Page 13 Page 2

STANDARD WARRANTY

We warrant gas calibration equipment manufactured and sold by us to be

free from defects in materials, workmanship and performance for a period of

one year from date of shipment. Any parts found defective within that period

will be repaired or replaced, at our option, free of charge, F.O.B. factory. This

warranty does not apply to those items which by their nature are subject to

deterioration or consumption in normal service, and which must be cleaned,

repaired, or replaced on a routine basis.

Such items may include:

a. Electrochemical type generating cells

b. Batteries

Warranty is voided by abuse including rough handling, mechanical damage,

alteration, or repair procedures not in accordance with the instruction

manual. This warranty indicates the full extent of our liability, and we are not

responsible for removal or replacement cost, local repair costs, transporta-

tion costs or contingent expenses incurred without our prior approval.

Advanced Calibration Designs, Inc.'s obligation under this warranty shall be

limited to repairing or replacing, and returning any product which shall be

returned to Advance Calibration Designs, Inc. at its manufacturing facilities,

with transportation charges prepaid, and which Advance Calibration De-

signs, Inc.'s Material Review Board examination shall disclose to its satisfac-

tion to have been defective.

This warranty is expressed in lieu of any and all other warranties and

representations, expressed or implied, and all other obligations or liabilities

on the part of Advanced Calibration Designs, Inc. including, but not limited to,

the warranty of fitness for a particular purpose. In no event shall Advanced

Calibration Designs, Inc. be liable for direct, incidental or consequential loss

or damage of any kind connected with the use of its products or failure of its

products to function or operate properly.

The following is a listing of the available electrochemical MiniCal cells and

their standard warranty when installed in equipment manufactured and

supplied by Advanced Calibration Designs, Inc.

1. Chlorine - One year, 250 tests.

2. Hydrogen Sulfide, hydrogen cyanide - One year, 250 tests.

AC Adapter

The AC adapter may be used to charge the battery or run the instrument con-

tinuously. The standard adapter is for 115 VAC, US style plug. Alternate AC

adapters are available for 220 VAC and various plug styles. The AC adapter is

an unregulated 12 VDC, 350mA current limited, wall adapter. Please consult

the factory before using a non-standard adapter as circuit board damage may

be incurred by improper usage.

Power and Select Switches

The Power and Select switches are momentary type switches that are activated

through the front membrane panel. The power switch has an arrow indicating

down. The Select switch has an arrow indicating up. These arrows determine

the direction in which the microprocessor scrolls information in the altitude and

ppm adjustment menus (described later in this manual).

During normal operation, you will be asked to either press and release or

press and hold the Power or Select buttons. If you are instructed to hold the

buttons, you will usually do so until the LCD screen changes. If you are in-

structed to press and release a button, the screen will usually not change until

you have released the appropriate button. Usually one second is required on

the press and release function to activate the program.

Strap

The model 300 comes equipped with a 1 1/2 inch wide nylon shoulder strap.

The strap is mounted on the instrument so as to minimize roll over of the

instrument. Is is important, when using the shoulder strap, to maintain hori-

zontal position on the instrument.

Page 12Page 3

ACCESSORY ITEMS

The following items are available as accessories for the Model 300:

P/N Description

113-0102-00 Male Hose Barb Quick Connector, low flow 1/4"OD hose

113-0103-00 Male Hose Barb Quick Connector, high flow 3/8" OD hose

150-0121-00 Plug-in Charcoal Filter Element, one each

150-0131-00 Plug-in Charcoal Filter Element, package of 12

362-0300-00 Battery Charger, 115 VAC, US style plug 12VDC, 350 mA

362-0301-00 Battery Charger, 220 VAC, European style plug, 12 VDC

715-0110-0X 3 Foot Hose w/connector, low flow, 1/4" OD (specify gas)

715-0115-0X 5 Foot Hose w/connector, low flow, 1/4" OD (specify gas)

715-0300-00 3 Foot Hose w/connector, high flow, clear, 3/8" OD

730-0350-00 Hard-body, Water Proof, Padded Carrying Case

910-0300-00 Instruction Manual, generic

START-UP

The instrument may be powered either by the internal battery pack or the AC

adapter. If the charger is plugged into the instrument, the initial screen will

read "Charging." This indicates that the AC adapter is supplying voltage to

the unit.

To start the generator, press and hold "POWER" until the ACD logo appears

on the screen, approximately three (3) seconds.

The first screen will show

The second screen will

identify the instrument by

its serial numbers.

The third screen will

show the date of last

calibration. This date is

reset every time a new

cell is put into the

instrument.

The fourth screen will

display "Initializing."

During this period the

instrument is reading

stored values from

memory. It takes approxi-

mately 15 seconds for all

values to be read into the

microprocessor.

1234567890123456789012345678901212345678901234567

ACD.

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Serial# D-0-0000

Cell# 96-0-0000

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CalibrationDate

Apr-20-1996

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Initializing...

Page 4Page11

LCD WARNING DISPLAYS

The following warning displays will appear if abnormal operation is detected

by the microprocessor:

"Flow too low" / Flow to high"

accompanied by an intermittent, audible

beep.

Accurate air flow is critical to an accurate gas mixture. The microprocessor

and built-in precision flowmeter continuously monitor the air flow. If, however,

a flow problem develops (e.g. air blockage, kinked tubing) cannot be cor-

rected within five seconds, the unit will display "Flow too low."

With sample draw sensors, where the sensor pump may be drawing at a

higher rate than the Model 300 pump. the generator will attempt to compen-

sate. If the problem (e.g. excessive sample draw) cannot be corrected within

five seconds, the unit will display "Flow too high."

"Cell Failure!"

accompanied by a continuous, audible beep.

The cell failure alarm will engage if the microprocessor detects an abnor-

mally high voltage condition. One possibility is that the electrolyte is not

covering the active electrode which normally happens if the instrument has

been placed on its side or upside down while in storage or on the shoulder

strap. If this message continues after the unit has been upright for at least

10 minutes, contact the factory.

"Cell used up / Return to Factory"

accompanied by an intermittent audible

beep.

The cell warranty has expired and the display will show 0% cell life remain-

ing. Contact the factory for proper cell replacement.

"Battery Low"

accompanied by an intermittent, audible beep.

If battery power drops below 15% capacity, the screen will flash "Battery Low."

Recharge the battery or switch to AC power.

Immediately following the

initializing screen, the instru-

ment will enter the altitude

screen. At this point, the you

may enter a new altitude by

pressing the "SELECT" button

when prompted to do so. A

sub menu will guide you

through the process of

changing altitude.

Note: Changes in altitude and temperature can cause changes in air

density, thus affecting the output. The Model 300 allows you to specify the

altitude setting thereby compensating for changes in air density, and will

retain that altitude specification until a change is desired. Your instrument

is calibrated at the factory using an altitude setting of 00 feet (sea-level).

The Model 300 automatically adjusts for temperature changes in air.

The next screen to appear will

report the cell life remaining of

the generating cells. All

generating cells consume

either the electrolyte and/or

the electrodes and must be

replaced when exhausted.

See the prorated warranty

schedule for current pricing.

Note: An intermittent audible beep will accompany the message "Cell

used up / Return to Factory" when the cell has reached 0% life remaining.

The next screen to appear will

be the battery status indicator.

The indicator will read

"Charged" when fully charged,

"Good" when the battery has

at least 15% battery life

remaining or "Battery Low"

when the instrument needs

charging.

Note: An intermittent audible beep will accompany the message

"Battery Low." You should recharge the battery or switch to AC power.

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Altitude set for

00FT.

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Celllife

98%remaining

1234567890123456789012345678901212345678901234567

Battery Status

. . . . Good

Page 5 Page 10

HOW TO CHANGE GAS CONCENTRATION

At any time during the fresh air mode or the gas generation mode, you may

change the gas concentration. To begin, press and release the "SELECT"

button.

The instrument will show the

battery status and cell life

status. It will then show the

current ppm setting and give

you the opportunity to change

the output by pressing the

"SELECT" button once again.

At this point the instrument

enters the change ppm mode.

It lists the minimum and

maximum ppm setting for

your instrument as well as the

current set point.

To increase the ppm setting,

push and/or hold the "SE-

LECT" button. To decrease

the ppm setting, push and/or

hold the "POWER" button. You

may scroll up or down to the

desired ppm. Once you have

achieved the desired ppm

setting, simple wait three

seconds and the instrument

will return to normal opera-

tion.

If the instrument was in the air

mode, it will return to the air

mode immediately. If you were

in the gas mode, the instrument will enter the gas stabilization screen as the

instrument equilibrates to the new gas setting.

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Output: 5ppm

Press Select to Change

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1.0 to 10.0 ppm

Set . . . 5.0 ppm

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1.0 to 10.0 ppm

Set . . . 3.0 ppm

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Stabilizing . . .

Standby: 300 sec

The model 300 has a built-in rechargeable nicad battery pack which will

provide 8-10 hours of remote operation for low flow units (0.25 LPM to 0.5

LPM) and 6-8 hours for high flow units (1 LPM to 2 LPM). To charge the

battery simply plug in the AC adaptor. The Model 300 LCD should display

"Charging" if the instrument is not turned on. It will take approximately eight

hours to reach full capacity.

The next screen verifies the

last ppm output setting that

the instrument was adjusted

to. At this point the output may

be changed by pressing the

"SELECT" button. A sub menu

will guide you through the ppm

adjustment menu.

After the ppm screen, and

adjustment menu if accessed,

the instrument will begin

providing scrubbed ambient

air for the purpose of "zeroing"

your sensor.

Note: The air is scrubbed

by a replaceable charcoal

filter. This filter should be

replaced as frequently as

the background air condi-

tions mandate and is

different for each applica-

tion.

At any time during the fresh

air mode you may start the

gas generation process by

pressing and holding the

"SELECT" button.

The cell life status, battery

status and ppm change

menu may be accessed by

pressing and releasing the

"SELECT" button.

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Output: 5.0 ppm

SELECTtochange

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Nowproviding

scrubbedair

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Pressand hold

SELECTforgas

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Pressandrelease

SELECTfor stats

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AIRMODE

00:00:01

Page 6Page 9

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Press SELECT to

changealtitude

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Set . . .

3500Ft.

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CellLife

98%remaining

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Battery Status

Good . . . .

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Output: 5ppm

Press Select to Change

HOW TO CHANGE ALTITUDE SETTING

At start-up, the instrument will

display the current altitude

setting. To change the altitude

setting, press and release

"SELECT" when instructed.

When the word "SET . . ."

appears, you may use the

arrow keys, (POWER/

SELECT) to scroll up or down

until the display reads the

desired altitude. The available

range is 0-9,900 Ft. Once the

desired altitude set point has

been reached, simply wait

three seconds and the

instrument will resume its

normal operation.

Note: Unlike the ppm adjustment, the altitude adjustment can only be

made during start-up.

HOW TO CHECK

OPERATING STATUS

At any time during the air or

gas mode, you may check the

status of the generating cell,

battery and ppm setting.

Simply press and release the

"SELECT" button.

The current status of each

component will be displayed

before returning to normal

operation.

Note: This operation is not

available during stabilization,

purging or shut down mode.

Unless gas has been selected, the instrument remains in the "AIR MODE" for

up to 30 minutes, at which time it will automatically shut off.

A digital counter keeps track

of how much time has

elapsed in the fresh air mode.

HOW TO GENERATE

GAS

While in the fresh air mode,

press and hold the "SELECT"

button for approximately three

(3) seconds, until....

. . . the screen displays the

message "Wait . . . System

Calibration." During this wait

period the microprocessor is

setting the flow to the correct

value to insure proper

concentrations of gas are

provided.

The Instrument will the

display the output settings as

it begins to generate gas

electrochemically.

When the Standby" counter

reaches zero, cell equilibrium

has been achieved and your

ready to calibrate your

sensor(s).

Note: Stabilization times

for the various gases range

from approximately 4

minutes for chlorine to

approximately 15 minutes for

hydrogen cyanide. This is

mainly dependent upon the

solubility of the gas in water

(the main electrolyte compo-

nent).

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Generating Cl2

10ppm 01:20:04

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AIRMODE

00:00:08

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Wait . . .

System calibration

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10ppmCl2

Standby: 300 sec

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Stabilizing . . .

Standby: 300 sec

Page 7 Page 8

While in the gas mode, a

digital counter will display

elapsed time. Unlike the air

mode, the model 300 will run

continuously in the gas mode

until either the battery be-

comes discharged or the cell

is consumed (if on AC

power).

At any time in the gas mode, the battery status, cell life status or ppm change

menu may be accessed by pressing and releasing the "SELECT" switch.

To return to the fresh air

mode, press and hold

"SELECT" for approximately

three (3) seconds. The

instrument will purge itself of

gas and then switch to the air

mode. You may alternate

between air mode and gas

mode as often as desired.

When you have completed

your calibrations, press and

hold "POWER"for approxi-

mately three seconds.

If you power down in the gas

mode, the instrument will first

purge itself of gas and then power down automatically.

If you are in the air mode, the instrument will power down directly. The instru-

ment should then be plugged into the AC adapter to recharge the battery.

CELL LIFE

The generating cell is consumed during normal operation and the higher the

ppm setting and flow rate, the faster the consumption of the cell. All cells

except chlorine dioxide are rated for 1000 hours of generation at 1 ppm and 1/2

LPM air flow rate. This would only be 100 hours at 10 ppm and 1/2 LPM and

only 20 hours at 25 PPM and 1 LPM. Chlorine dioxide is only rated at 1/10 of

the life of the other cells, i.e., 100 hours at 1 ppm and 1/2 LPM.

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Generating Cl2

10 ppm 02:30:09

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Purging . . .

Standby: 300 sec

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Shut down in . . .

5 seconds

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