Maxtec Handi+ User manual

Handi+

R218P15 INDUSTRIAL

Operating Manual & Instructions For Use

R218M15 REV. E

ENGLISH

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Maxtec

2305 South 1070 West

Salt Lake City, Utah 84119

USA

TEL (800) 748.5355

FAX (801) 973.6090

www.maxtec.com

CLASSIFICATION

Protection against electric shock............................................................................ Internally powered equipment

Protection against water ................................................................................................................................................ IPX4

Mode of Operation...............................................................................................................................................Continuous

Flammable anestheric mixture.............................................................................. Not suitable for use in presence

of a flammable anestheric mixture

Product Disposal Instructions:

The sensor, batteries, and circuit board are not suitable for regular trash disposal. Return sensor

to Maxtec for proper disposal or dispose according to local guidelines. Follow local guidelines

for disposal of other components.

WARRANTY

Maxtec warrants to the original purchaser, that the HANDI+ analyzer to be free from defects in mate-

rial and workmanship for a period of two-(2) years from the date of shipment from Maxtec or from

one of Maxtec’s authorized dealers. Parts found to be defective as determined by Maxtec, will be

repaired or replaced free of charge if shipped prepaid to the factory in the original shipping carton.

This warranty is void if the product has been subject to misuse or abuse, including but not limited to:

exposure to water, humidity- temperature- shock or pressure outside of the listed specifications, or

has not been operated in accordance with instructions, or if the identifying markings on the product

label have been altered or removed. Routine maintenance items are excluded from this warranty.

The seller assumes no liability for consequential damages of any kind, and the buyer, by acceptance

through purchase of this product, will assume all liability for the consequences of its use or misuse by

the buyer, his employees, or others.

It is the sole responsibility of the buyer/user to determine if this product is suitable for the intended

application.

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TABLE OF CONTENTS

CLASSIFICATION ..........................................................................II

WARRANTY ...................................................................................II

1.0 INTRODUCTION.......................................................................1

2.0 OPERATION.............................................................................1

2.1 General ...............................................................................................1

3.0 CALIBRATION ........................................................................ 2

4.0 CALIBRATION ERRORS AND ERROR CODES .................. 2

5.0 CLEANING, MAINTENANCE, AND DISPOSAL .................. 3

6.0 SPECIFICATIONS ................................................................... 3

6.1 Analyzer Specifications ..............................................................3

2.45 in

0.90 in

1.44 in

2.91 in

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1.0 INTRODUCTION

Intended Use: The HANDI+ is a flexible tool, which is ideal for many applications. Compact and easy

to operate, the HANDI+ can quickly monitor oxygen deficiency in ambient air or check process gas

streams.

The HANDI+ features the model MAX-250 oxygen sensor that offers superior performance over con-

ventional sensors. Based on a weak acid electrolyte, the MAX-250 is unaffected by CO2 or other com-

bustion gases. Additionally, the MAX-250 sensor offers extra life and excellent stability.

The sensing port of the HANDI+ is threaded to adapt to a wide variety of sampling accessories. With

the barbed fitting, the HANDI+ can be quickly connected to a flexible tube for checking nitrogen or

oxygen sources. With the flow through head accessory, the HANDI+ can be connected to process gas

streams for a quick check of oxygen.

2.0 OPERATION

2.1 General

The plastic freshness seal on the sensing port should be removed and discarded when you are ready

to use the HANDI+ for the first time. This seal ensured freshness of the HANDI+ during shipping and

storage. Once the seal is removed, you should expect to obtain the normal life from the HANDI+.

Included in the kit you will find the barbed adapter, which will screw onto the sensing port.

Peel away seal

Barbed

Adapter

Process Point

which operates

at 1 to 3 psig.

Barbed

Adapter

HANDI

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3.0 CALIBRATION

To simplify operation the Handi+ Analyzer automatically determines the calibration gas being used as

compressed air (20.9%) or high grade (100%).

For best performance and accuracy, the HANDI+ should be calibrated on a frequent basis. It is prefer-

able to calibrate each day it will be used or at least once a month on a known source of oxygen. Clean,

dry compressed air is a suitable cal gas.

Clean dry air typically contains approximately 20.9% oxygen. Expose the HANDI+ to air (compressed

or ambient) and push the “CAL” button. The display will indicate the concentration of oxygen of the

Calibration gas. It is recommended that the calibration gas be controlled to a pressure and flow rate

equivalent to the measured gas. This may be accomplished by using the same gas sampling appara-

tus for calibration as for measuring in the intended application. For example, if the HANDI+ is used

to check a nitrogen gas line, use the same sampling setup when calibrating. If the intended use is for

checking room air, then calibrate the HANDI+ on clean ambient air (20.9% Oxygen). After adjusting

the display to 20.9%, the HANDI+ is now calibrated and may be used to verify oxygen concentrations.

Always recalibrate the HANDI+ if the point of use elevation has changed by 500 feet. If unable to adjust

the calibration pot so the display correctly indicates the value of the calibration gas, the HANDI+ has

probably expired. If still within the warranty period, the unit should be returned to the factory for

evaluation.

4.0 CALIBRATION ERRORS AND ERROR CODES

The Handi+ analyzers have a self test feature built into the software to detect faulty calibrations, oxy-

gen sensor failures, and low operating voltage. These are listed below, and include possible actions to

take, if an error code occurs.

E03: No valid calibration data available

Make sure unit has reached thermal equilibrium. Press and hold the Calibration Button for three

seconds to manually force a new calibration.

E04: Battery below minimum operating voltage

Unit is at end of life, see page I for proper disposal.

CAL Err St: O2 Sensor reading not stable

Wait for displayed oxygen reading to stabilize when calibrating the device at 100% oxygen. Wait for

unit to reach thermal equilibrium (Please note that this can take up to one half hour, if the device is

stored in temperatures outside the specified operating temperature range).

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CAL Err lo: Sensor voltage too low

Press and hold the Calibration Button for three seconds to manually force a new calibration. If unit

repeats this error more than three times, contact Maxtec Customer Service for possible replacement.

CAL Err hi: Sensor voltage too high

Press and hold the Calibration Button for three seconds to manually force a new calibration. If unit

repeats this error more than three times, contact Maxtec Customer Service for possible replacement.

CAL Err Bat: Battery voltage too low to recalibrate

Unit is at end of life, see page I for proper disposal.

5.0 CLEANING, MAINTENANCE, AND DISPOSAL

The HANDI+ analyzer requires little maintenance. For best performance and accuracy, the HANDI+

should be calibrated on a frequent basis. For general use, it is recommended the HANDI+ be cali-

brated once a month on a known source of oxygen such as clean dry (compressed) air. Reference the

calibration section in this manual for more details.

If the unit becomes wet, it should be dried off immediately with a soft dry towel. The display may indi-

cate low concentrations of oxygen if the sample port of the sensor becomes wet. In this case, remove

the barbed adapter and thoroughly dry inside and out with a soft dry towel or cotton applicator tip.

Additionally, dry the face of the sensor with a cotton applicator tip and allow to air dry for one half-

hour (or until the oxygen display returns to normal). Exposure of the HANDI+ to water or extremely

high RH may result in shortened life or cause the electronic circuit or battery to fail. Disposal: Please

note the materials of construction for proper disposal. The material of the HANDI+ housing is a poly-

carbonate and ABS blend. The sensing portion of the HANDI+ contains lead and acetic acid. The

HANDI+ contains a printed circuit board and a Lithium Battery.

6.0 SPECIFICATIONS

6.1 Analyzer Specifications

Sensor Type: ....................................................Maxtec MAX-250 galvanic cell w/ Temperature Compensation

(Non-Replaceable). Extra-Life Oxygen Sensor, galvanic cell type.

Measurement Range:............................................................................................................0.0 - 100.0% oxygen (gas)

Resolution/Display:............................................................................................................................................................ 0.1%

The three digit LCD indicates values between 0.0 - 99.9% oxygen.

Over range indicated by one decimal point on display located after the first digit.

Accuracy and Linearity: ................................................... ± 1% of full scale at constant temperature, R.H. and

@ 15˚C - 40˚C pressure when calibrated at full scale.

± 3% actual oxygen level over full operating temperature.

Response Time: .................................................................................< 15 seconds for 90% step change. (at 25˚C)

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Warm-up Time:............................................................................................................................................... None required

Operating Temperature: ..................................................................................................... 15˚C - 40˚C (59˚F - 104˚F)

Storage Temperature: .............................................................................................................-15˚C - 50˚C (5˚F - 122˚F)

Operating Pressure: .................................................................................................... Atmospheric pressure to 3psig.

Environmental:.............................................................................General purpose housing equivalent to NEMA 1.

The Handi+ is not waterproof. 0-95% RH, non-condensing.

Warranty: ..............................................................................Twenty-four months in normal operating conditions.

Power Requirements:.............................................................................................................. Powered by one internal,

non-replaceable Lithium battery, CR2450.

Power on push button automatically shuts off after 80 seconds time-out.

Electronics rated general purpose; not for

use in hazardous areas or for use with flammable gases.

Weight:........................................................................................................................................................Approx. 60 grams

Battery Life: ........................................................................................................ Approx. 1850 hours (74,000 cycles)