TX900 Microwave Leakage Detector 99 Washington Street

TX900 Microwave Leakage Detector 99 Washington Street
TX900
Microwave Leakage
Detector
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
Users Manual
Microwave Leakage
Detector
Users Manual
TX900_Rev001
© 2009 Amprobe Test Tools.
All rights reserved.
1
English
TX900
Limited Warranty and Limitation of Liability
Your Amprobe product will be free from defects in material and
workmanship for 1 year from the date of purchase. This warranty does not
cover fuses, disposable batteries or damage from accident, neglect, misuse,
alteration, contamination, or abnormal conditions of operation or handling.
Amprobe’s warranty obligation is limited, at Amprobe’s option, to refund
of the purchase price, free of charge repair, or replacement of a defective
product .  Resellers are not authorized to extend any other warranty on
Amprobe’s behalf. To obtain service during the warranty period, return the
product with proof of purchase to an authorized Amprobe Test Tools Service
Center or to an Amprobe dealer or distributor. See Repair Section for details.
This warranty is your only remedy . All other warranties - whether express,
implied or statutory - including implied warranties of fitness for a particular
purpose or merchantability, are hereby excluded. Neither Amprobe nor its
parent company or affiliates shall be liable for any special, indirect, incidental
or consequential damages or losses, arising from any cause or theory. Since
some states or countries do not allow the exclusion or limitation of an
implied warranty or of incidental or consequential damages, this limitation of
liability may not apply to you.
Repair
All test tools returned for warranty or non-warranty repair or for calibration
should be accompanied by the following: your name, company’s name,
address, telephone number, and proof of purchase. Additionally, please
include a brief description of the problem or the service requested and
include the test leads with the meter. Non-warranty repair or replacement
charges should be remitted in the form of a check, a money order, credit card
with expiration date, or a purchase order made payable to Amprobe® Test
Tools.
In-Warranty Repairs and Replacement – All Countries
Please read the warranty statement and check your battery before requesting
repair. During the warranty period any defective test tool can be returned to
your Amprobe® Test Tools distributor for an exchange for the same or like
product. Additionally, in the United States and Canada
In-Warranty repair and replacement units can also be sent to a Amprobe®
Test Tools Service Center (see below for address).
Non-Warranty Repairs and Replacement – US and Canada
Non-warranty repairs in the United States and Canada should be sent to a
Amprobe® Test Tools Service Center. Call Amprobe® Test Tools or inquire at
your point of purchase for current repair and replacement rates.
Non-Warranty Repairs and Replacement – Europe
European non-warranty units can be replaced by your Amprobe® Test Tools
distributor for a nominal charge.
2
1
LoBat
mW/cm2
2
3
0 1 2 3 4 5 6 7 8 9 10
TEST
4
➊ Sensor Nose
➋ LCD display
➌ Test Button
➍ Battery cover
Test Equipment Depot - 800.517.8431 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
TX900
Microwave Leakage Detector
Contents
Symbols...................................................................................................................5
Safety Information.................................................................................................5
 Warnings and Precautions..........................................................................5
Contents..................................................................................................................5
Introduction............................................................................................................5
Operation...............................................................................................................5
RF Power Leakage testing................................................................................5
Maintenance and Repair ......................................................................................6
Battery Replacement .......................................................................................6
Specification...........................................................................................................6
4
Symbols


Refer to the manual

Conforms to relevant
Australian standards.

Complies with EU
directives

Do not dispose of this
product as unsorted
municipal waste.

Audible tone
Battery
Safety Information
 Warnings and Precautions
• Inspect the RF detector before every use. Do not use a damaged unit.
• Do not operate the instrument in an explosive atmosphere.
• To reduce the risk of fire or electric shock, do not expose this product to
rain or moisture.
• To avoid false readings, which could lead to possible personal injury,
replace the batteries as soon as the low battery indicator (LoBat) appears.
Contents
1
TX900 Microwave Leakage Detector
2
500 ml Plastic Beakers
1
Spirit (alcohol) Glass Thermometer
1
9V PP3 type battery
1
Carrying case
1
Sample set of “RF Emission Labels”
1
Registration card
1
Certificate of Conformance
Introduction
The TX900 is a microwave radiation detector for checking RF power leakage
in microwave cooking ovens. The TX900 has temperature compensation and
Auto-zero for the display.
Operation
 WARNING
1 mW/cm2 Threshold: If a signal level greater than 1 mW/cm2 is detected, a
beeper will sound and remain on until the signal level falls below 1 mW/cm2.
Overload: If a signal level greater than 10 mW/cm2 is detected during
testing, an “Overload” condition will be indicated by the display showing
the letters “OL”.
Linear display: In the event that the signal is a high, rapidly varying value, it
may be useful to refer to the 10 point linear display to give an indication of
the average rather than the rapidly changing alpha numeric display.
RF Power Leakage testing
1. Fill a beaker with 275 cc ±15cc of water and place it in the microwave
oven to act as a load for the magnetron.
2. Point the instrument away from the potential RF source and depress the
TEST button. This turns ON the instrument and sets ‘Auto Zero’ the LCD
display for ‘0.0’ mW/cm2.
3. Setup the microwave oven for full power and switch ON.
4. The TEST button must be held down during testing.
5. Move the tip of the instrument cone (almost touching) at about 5 cm /
second around possible leakage areas - door seals, hinges, door seams,
windows, welds and rivets.
6. Leakage should not exceed 5 mW/cm2 at a distance of 5 cm (1.96 inches).
Many manufacturers have lower emission levels from their ovens. Consult
the microwave oven manufacturers data for specifications.
7. Write down the highest reading displayed during the test and location on
a suitable label, which should then be affixed to the oven.
5
Maintenance and Repair
If there appears to be a malfunction during the operation of the meter, the
following steps should be performed in order to isolate the cause of the
problem:
1. Check the battery.
2. Review the operating instructions for possible mistakes in operating
procedure.
Except for the replacement of the battery or test probes, repair of the
multimeter should be performed only by a Factory Authorized Service Center
or by other qualified instrument service personnel. The front panel and case
can be cleaned with a mild solution of detergent and water. Apply sparingly
with a soft cloth and allow to dry completely before using. Do not use
aromatic hydrocarbons or chlorinated solvents for cleaning.
Battery Replacement
 WARNING
&
)
Battery replacement should be performed in a clean environment and
with appropriate care taken to avoid contaminating the meter’s interior
components.
1. Depress latch and lift the battery cover.
2. Replace the battery with the same type, 9V battery. Note polarity of the
battery.
3. Replace the rear case.
Specification
General
Display: 21/2 Digit LCD with 10 point bargraph display
Power Source: 9 Volt NEDA 1604A \ IEC 6LR61 Battery
Low Battery: approx. 6 V
Nominal current: 10 mA
Sensor - Source Spacing: circular - 5 cm
Environmental: Indoor operation; below 6,562ft (2000m)
Operating Temperature: 0°C to 50°C (32°F to 122°F), < 80% RH
Storage Temperature: -20ºC to 50ºC (-4ºF to 122ºF), < 80% R.H. (with battery
removed)
Dimensions: 23 x 4.2 x 4.4 cm (9.1 x 1.7 x 1.7 in.)
Weight: 0.15 kg (0.33 lb)
 EMC: EN 61326-1:2006 This product complies with requirements of the
following European Community Directives: 2004/108/EC (Electromagnetic
Compatibility) and 2006/95/EC (Low Voltage) as amended by 93/68/EEC (CE
Marking). However, electrical noise or intense electromagnetic fields in the
vicinity of the equipment may disturb the measurement circuit. Measuring
instruments will also respond to unwanted signals that may be present within
the measurement circuit. Users should exercise care and take appropriate
precautions to avoid misleading results when making measurements in the
presence of electronic interference
Electrical
RF Power Sensing Range: 0 to 10 mW/cm2
Nominal Detecting Frequency: 2.45 GHz
Calibration Accuracy: ± 1dB in plane wave - circular polarization
Response to step input: < 1 sec.
Resolution: 0.1 mW/cm2
Test Equipment Depot - 800.517.8431 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
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