Quest Technologies 2200 User manual

1200/2200
Sound Level Meters
Operator's Manual
Note: Due to the new ATEX Directive in Europe, all references in this
document to "Ex" or "EEx" for intrinsic safety approvals should be disregarded
effective 7/1/03 within the member countries of the European Union (EU). At
this time, this product is not approved in accordance with the new ATEX
Directive and is not sold for use in hazardous atmospheres or explosive zones by
customers within the EU. Outside of the EU, all references to intrinsic safety
continue without change.
Thank you for choosing Quest Technologies to meet your sound measuring
needs. The Quest 1200 Sound Level Meter is a light weight easy-to-use Type 1
instrument and the 2200 is our Type 2 model. It is our goal to make your deci-
sion to buy Quest products the right one, and to provide support for any ques-
tions or concerns that might arise.
The purpose of this manual is to provide the user with the necessary information
to operate the 1200/2200 Sound Level Meter as well as the remoteable versions
of the 1200R/2200R. The entire manual should be read to fully understand the
many features this instrument offers.
This manual is not all inclusive and cannot cover all unique situations. In addi-
tion, no warranties are contained in this manual except as described under the
warranty policy section.
Copyright 2000
Revision A
P/N 056-653
1060 Corporate Center Drive • Oconomowoc, WI 53066 USA • 800-245-0779 • Fax: [phone]
http://quest-technologies.com Printed in U.S.A

1. INTRODUCTION..................................................................................1
2. GENERAL OVERVIEW......................................................................2
2.1 The Display....................................................................................2
2.2 Meter Controls...............................................................................3
2.2.1 OFF/PAUSE/RUN Switch..................................................3
2.2.2 SPL/LEQ/RT/MAX/MIN/% OL Switch.............................3
2.2.3 FAST/SLOW/PEAK/IMP RESPONSE Switch .................4
2.2.4 A/C/Z Switch ......................................................................4
2.2.5 RANGE (dB) Switch...........................................................4
2.2.6 RESET Button.....................................................................5
2.2.7 CAL Button.........................................................................5
2.3 Output Jack....................................................................................5
2.3.1 DC Output Function ...........................................................6
2.3.2 AC Output Function ...........................................................6
3. METER INTEGRITY .......................................................................7
3.1 Power On/Battery Check ...............................................................7
3.1.1 Battery Replacement............................................................7
3.2 Setup…………..............................................................................7
3.2.1 Changing the Exchange Rate ..............................................7
3.2.2 Changing the Calibration Level ..........................................7
3.3 Calibration.....................................................................................8
3.3.1 Calibration Check................................................................8
3.4 Switch Settings to Select Measurements .......................................9
4. OPERATION......................................................................................10
4.1 Meter/Microphone Placement ..................................................10
4.2 Background Noise.....................................................................10
4.3 Windscreen Effects ...................................................................11
4.4 Data Recording/DATALOGGING............................................12
5. TECHNICAL INFORMATION.....................................................13
5.1 Principles of Operation...............................................................13
5.2 Microphone ...............................................................................13
5.3 Weighting Characteristics .........................................................15
5.4 Tone Burst Response.................................................................15
6. SPECIFICATIONS..........................................................................18
7. ACCESSORIES................................................................................21
QUEST SERVICE POLICY......................................................................22
QUEST WARRANTY POLICY................................................................23
1. INTRODUCTION
The Quest models 1200 and 2200 and their remote versions
(1200R/2200R) are Impulse and Integrating Sound Level Meters for
measuring frequency weighted and time averaged SPL, weighted or
unweighted Peaks or frequency weighted Leq. Applications include
laboratory, industrial, community and military, measurement or analysis.
The models 1200 and 2200 are easy-to-use hand held meters with an LCD
display that provides a numerical readout. They are housed in an R.F.
shielded injection molded case. The meter is operated with simple slide
switches. An output jack on the bottom of the meter is provided for con-
necting to peripheral devices such as chart recorders, oscilloscopes, audio
recorders, etc.
The model 1200 provides Type 1 accuracy for precision measurements
while the model 2200 provides Type 2 accuracy for general field survey
work. As both meters are operationally identical, this manual will refer
only to the model 1200 except where appropriate.

2. GENERAL OVERVIEW
2.1 The Display:
The LCD display provides a numeric readout in 0.1 dB increments along
with a LOBAT (low battery) indicator. The LOBAT indicator will turn on
when the voltage of the battery is too low to allow an accurate reading.
A plus sign '+' will appear on the left side of the display if signal peaks
cause an overload condition in the electronics. If the signal falls below the
measuring range, 'UR' (under range) will be displayed.
2.2 Meter Controls:
2.2.1 OFF/PAUSE/RUN Switch:
• OFF - In this position the power is removed from the instrument.
• PAUSE - In SPL mode the meter continuously displays sound pressure
level according to the RESPONSE and WEIGHTING settings. In other
modes the meter will display the appropriate value for the previous RUN or
'---' if no run time has been accumulated. The meter automatically updates
the current reading at a rate of once per second.
• RUN - Causes the meter to begin calculating the frequency weighted
equivalent continuous SPL. All SPL measurements are integrated into a
single number representing the equivalent SPL for the entire measurement
period. This measurement will continue until the meter is placed in the
PAUSE mode or reset. Maximum RUN time is 100 hours or as long as the
battery lasts.
2.2.2 SPL/LEQ/RT/MAX/MIN/%OL Response Switch:
This six position switch determines the display mode of the meter.
• SPL - In the SPL mode the numeric display provides a reading of the
maximum sound pressure level measured during the previous second.
• LEQ - In the LEQ mode, the display indicates the integrated , or average
level for the RUN period. If no RUN time has been accumulated the display
shows dashes.

• RT - In the RT mode the display shows the elapsed time of the current or
last RUN. The RT mode consists of two or three displays. The first is RUN
TIME seconds ':XX'. The second is RUN TIME hours/minutes 'XX:XX'.
Pressing the CAL button while in the RT mode toggles the meter between
these two displays. If the RUN TIME exceeds 20 hours, there will be a third
display that will show hours up to 99 'h:XX'. If no RUN time has been
accumulated the display shows dashes.
• MAX - In the MAX mode the display holds the highest reading
encountered during the RUN period. If no RUN time has been accumulated
the display shows dashes.
• MIN - In the MIN mode the display holds the lowest reading encountered
during the RUN period. If no RUN time has been accumulated the display
shows dashes.
• %OL - In the %OL mode the display shows the time that the circuitry has
been overloaded as a percent of RUN TIME. If no RUN time has been
accumulated the display shows dashes.
2.2.3 FAST/SLOW/PEAK/IMP Response Switch:
The Response Switch controls the rate at which the meter responds to
changing input signals. Most sound measurements are done with the
response set to SLOW (S). The FAST (F) response is generally used when
measuring short duration noises such as moving vehicles. PEAK (P) is
useful when measuring the absolute peak of the sound pressure wave.
IMPULSE (I) is used for impulsive or transient sounds.
The Response switch positions are as follows:
• FAST (F) - 125 millisecond time constant. (See Figure 10) Decay Rate =
34.7 dB per second.
• SLOW (S) - 1 second time constant. (See Figure 11) Decay Rate = 4.35
dB per second.
• PEAK (P) - 50 microsecond time constant.
• IMPULSE (I) - 35 millisecond rise time constant, 1.5 second decay time
constant. (See Figure 12)
2.2.4 A/C/Z Switch:
The A/C/Z switch controls the frequency response (weighting) of all
measurements. (See Figure 9)
2.2.5 RANGE (dB) Switch:
The displayed range of the model 1200 is 70 dB and is switchable between
(30-100dB),(50-120dB), and (70-140 dB). After switching ranges allow
several seconds for the meter electronics to stabilize. If a range change is
necessary during a LEQ study, it is good practice to first set the meter to
LEQ PAUSE, change range and then set the meter to RUN. This will avoid
integrating any handling or switching noise into the LEQ measurement.
2.2.6 RESET Button:
This button is used primarily to clear data from the memory of the
instrument. When pressed, the display will begin to count down from '02'. If
the button is pressed and held, the display will count down '02,01, ---'. When
the dashes are displayed the instrument memory is clear.
This button is also used as an up-arrow during setup, (see Operating
Procedure)
2.2.7 CAL Button:
This button has three functions; It initiates a calibration, toggles between Run
Time displays, and acts as a down arrow during setup, (see Operating
Procedure)

2.3 Output Jack:
The model 1200 provides an output jack on the bottom of the meter for
measuring the weighted AC signal before the rms/log detector and the DC
output of that detector. Both signals are real time, i.e. LEQ is not
represented at the DC output. This jack may be connected to any load
without affecting the operation of the meter. Connection to low impedance
loads will require correction for the 1 Kohm impedance of these outputs and
will also decrease battery life.
The output jack takes a 3.5mm stereo plug. (See Figure 2, Output Jack
Connections.)
2.3.1 DC Output Function:
The SPL or PEAK level over the range selected is linearly represented by a
DC output. The output changes 16.7mV/dB or 1V/60dB. This output is
provided for connecting a 0 to 1 volt span data recorder. (See section 4.4
Data Recording)
2.3.2 AC Output Function:
This jack provides the amplified, frequency weighted AC signal at the input
of the RMS detector.
3. METER INTEGRITY
3.1 Power On and Battery Check:
Set the OFF/PAUSE/RUN switch to either the PAUSE or RUN position as
desired. At any time, other than initial turn-on, if the LOBAT indicator is
displayed, the user must replace the battery. A 9 Volt Alkaline battery is
recommended for best performance.
3.1.1 Battery Replacement:
Slide the battery door to the left to open the battery compartment. Refer to
the sticker inside the compartment for proper battery orientation.
3.1.2 Rechargeable Batteries:
Nicad type rechargeable (9V batteries (such as Radio Shack® 23-299 7.2 V,
120 mAh) and an appropriate charger may be used with the 1200. The fact
that nicad 9 V replacement cells typically operate at 7.2 V will be observed
as shorter battery life (approximately 8 hours with Radio Shack® 23-299).
At the appearance of the LOB AT indicator the nicad battery must be
recharged.
NiMH (Nickel-Metal-Hydride) batteries are NOT recommended. This is
due to the excessive discharge of the typical NiMH cell prior to the voltage
dropping low enough to activate the LOBAT indicator.
3.2 Setup:
NOTE: There may be times when it is necessary to change the Exchange
Rate or Calibration Level that is stored in the meter. Both of these items are
accessible during the power-up sequence.
The power-up sequence is as follows:
1. All display segments turned on for 2 seconds.
2. The meter firmware revision 'rX.X' for 2 seconds.
3. The current Exchange Rate or Doubling Rate 'Er3' or 'Er5' for 3
seconds.
4. The current Calibration Level for 3 seconds.
3.2.1 Changing the Exchange Rate:
Turn on the meter.
When 'Er3' or 'Er5' appears in the display, press both the CAL and RESET
button simultaneously until dashes are displayed.

At this point, pressing either the CAL or RESET button will toggle the
Exchange Rate between 'Er3' and 'Er5'.
When the desired Exchange Rate is displayed, store the selection by
pressing both the CAL and RESET buttons simultaneously. This completes
the selection.
3.2.2 Changing the Calibration Level:
NOTE: The calibration level is the decibel level that is produced by
your calibrator.
Turn on the meter.
When the current calibration level is displayed, press and hold both the
RESET and CAL buttons until dashes appear. The meter is now in the
calibration level set mode.
To edit the level, use the RESET key to increase the value and the CAL key
to decrease to value. Edit the value to match your calibrator's output.
When the desired calibration level is displayed, press and hold both the
RESET and CAL buttons until dashes appear on the display. The new
calibration level is now stored in the instruments memory and will not have
to be changed again unless an alternate calibrator is used.
3.3 Calibration:
The model 1200 may be calibrated in any range based on your calibrator's
output. There is no warm up period required, but for maximum accuracy
calibration should be performed at the temperature of the environment to be
measured. To calibrate, perform the following procedure using a Quest
Calibrator.
It is recommended that calibration be performed before each use.
1. Check that the LOBAT indicator is not on.
2. Check to see that the calibrator SPL output matches the calibration
level stored in the meter. If it does not, use procedure outlined in
section 3.2.
NOTE: Failure to match calibrator output level to calibration level stored
in the 1200 will result in erroneous SPL readings.
3. Turn to calibrator ON. If optional, set the frequency to 1 KHz.
4. Place the black adapter ring fully onto the microphone.
5. Set the model 1200 to SPL, PAUSE, SLOW or FAST, and A or C
weighting. Set the measuring range so that the calibration level falls
within it.
6. If the 1200 has data in the memory, it must be cleared before
calibration is possible. To do this, press and hold the RESET button.
For more details see (RESET Button, section 2.2.6).
7. Press and hold the CAL button until 'CAL' appears in the display.
Release the button. Three dashes will appear and then disappear one at
a time as the meter calibrates. A final message of 'PAS' or 'BAD' will
appear in the display. If 'BAD', review steps one though five.
3.3.1 Calibration Check:
It is a good idea to check calibration after use. To do so, perform the
previous steps 1 through 5. Observe the meter display, it should read the
calibrator level +/-0.5 dB. If out of tolerance, run calibration procedure in
section 3.3.
3.4 Switch Settings to Select Measurement:
To Measure: Set Switches to: Display:
SPL SPL, A,C or Z, 1 second update
RUN or PAUSE,
RESPONSE of
interest
LEQ LEQ, A,C or Z, Holds LEQ until RESET
RUN, RESPONSE of or Meter SETTING is
FAST, SLOW OR changed IMPULSE
MAX HOLD MAX, A,C or Z, Holds MAX until RESET
RUN RESPONSE of or Meter SETTING is
interest changed

MIN HOLD MIN, A,C or Z, Holds MIN until RESET
RUN, RESPONSE of or Meter SETTING is
FAST, SLOW OR changed
IMPULSE
During an LEQ RUN, weighting, response, and range switch settings can
not be changed. If these switches are changed, the LEQ measurement will
stop, reset, and start again.
4. OPERATION
Before taking measurements, there is a series of quick checks that should be
performed. After switching the unit ON check for a LOBAT indication on
the display, and replace the battery if needed (see Section 3.1).
Although the model 1200 will maintain accurate calibration over a long
period of time, the calibration should be checked before each use. The
calibration should also be checked and verified after each use.
Set the RESPONSE, WEIGHTING, and RANGE (dB) switches as needed.
Hold, set, or tripod mount the meter in the desired location. If a MAX,
MIN, or LEQ measurement is needed, be sure to reset the meter before
taking the measurements. It is good practice to document all measurement
conditions and meter settings for possible future reference.
4.1 Meter/Microphone Placement:
Whenever possible, the meter should be tripod-mounted in a relatively open
area to minimize reflections from the body or other large reflective
structures. Avoid placement against a wall or in a corner. A threaded
bushing on the back will accept a standard 1/4-20 tripod fitting.
The microphone cartridge used on the models 1200 and 2200 is a free-field
microphone. Point it directly at the noise source (0 degrees ).
Random incidence measurements may be taken with the 1200 if the plastic
random incidence corrector supplied with the BK4936 microphone is used.
The random incidence corrector is a black plastic lipped sleeve packed in
the BK4936 packing container. To attach the corrector, position the end of
the sleeve without the lip over the grid of the microphone and gently press
down until a snap fit is achieved.
4.2 Background Noise:
Background noise can cause considerable error in measurement when its
level is close to that of the particular sound source of interest. When it is not
possible to eliminate or reduce the background noise, use the curve shown
in Figure 3 to correct for the effect of the background noise on the
measurement.

For example, if the background noise is 45dB and the sound of interest
measures 51dB, the difference between measurement and background
noise is 6dB. From Figure 3, for a 6dB difference, 1.3dB should be
subtracted from the measurement. The correct measurement is therefore
51dB- 1.3dB = 49.7dB.
4.3 Wind Screen Effects:
To prevent measurement errors caused by wind blowing across the micro
phone, the use of a windscreen is recommended. The wind screen will
reduce wind effects and will also help protect the microphone under dusty,
oily, or humid conditions. Acoustic attenuation effects of the windscreen
(WS-7) are shown in Figure 4.
4.4 Data Recording:
The model 1200 has a DC output that is linearly related to the decibel
reading on the LCD display by 16.7mV/dB (1V/60dB).
This output, capable of driving up to 100 feet of shielded or twisted pair
cable, is intended for use with a chart recorder or data acquisition device
that has a high input impedance. The output impedance is 1000 ohms.
Recorder input impedance may cause loading of this output, which should
be taken into account. Multiplication factors for the above numbers are
given below for various recorder input impedances.
INPUT IMPEDANCE OF
RECORDER: MULTIPLY DC VOLTAGE BY:
10 KOHM
20 KOHM
50 KOHM
100 KOHM
1.100
1.050
1.020
1.010

5. TECHNICAL INFORMATION
5.1 Principles of Operation:
The Quest model 1200 uses low noise, low power analog and digital
integrated circuitry to ensure long battery life, maximum stability, and
superior reliability over a wide range of environmental conditions. Figure 5
is a block diagram of the model 1200/2200's internal circuit operations.
5.2 Microphone:
The model 1200 is designed to accept a prepolarized (electret) Type 1
microphone Quest P/N #059-523 (BK #4936). The impedance of this
microphone is approximately 12pF. The microphone screws directly onto
either the remoteable preamp or the fixed microphone extension of the
meter case. A typical response curve for the Type 2 microphone is shown in
Figure 6.
The model 2200 is designed to accept a prepolarized (electret) Type 2
microphone Quest P/N #056-316 (QE7052). The impedance of this micro-
phone is approximately 15pF. The microphone screws directly onto either
the remoteable preamp or the fixed microphone extension of the meter case.
A typical response curve for the Type 2 microphone is shown in Figure 7.
CAUTION: When installing or removing the microphone, do not unscrew
the protective grid. Do not touch the metal foil microphone diaphragm
under this grid as permanent damage may result.

5.3 Microphone Preamplifier Extension Cables
On 1200R (Remote) units the preamplifier is removable by unscrewing the
black plastic collar below the preamplifier housing. The 1200 will drive up
to a 10 foot cable with minimal loss. Quest offers the following lengths of
remote cable for use with the 1200:
#59-899 ICM-2 Microphone Cable (2 foot length)
#59-733 ICM-10 Microphone Cable (10 foot length)
#59-734 ICM-50 Microphone Cable (50 foot length)
The calibration level at 1 kHz is affected by less than 0.1 dB with the
insertion of either of these cables. Therefore, there is no need to recalibrate
when the cable is attached.
5.4 Input Buffer Circuitry
The high impedance input circuitry of the 1200 will accept up to a 2.0 volt
RMS signal. With the microphone and preamp removed, other transducer
devices may be connected to give a dB readout on the meter. To remove
the preamplifier unscrew the black plastic collar below the preamp
housing. Only use pins 1 and 3 for the AC signal input. NEVER connect to
pins 2 and 4. To input an electrical signal requires a special connector,
Quest part number 14-739. Figure 9 shows the function of each of the pins
within the meter input connector.
5.5 Weighting Characteristics
The weighting characteristics (frequency response) for A, C, and Z are
shown in Figure 10. The "A" weighting response emulates the response of
the human ear and is used for most industrial and community noise mea-
surements. Generally, "C" weighting is used for measuring noise reduction
in hearing protectors and for other scientific purposes. "Z" is a linear
response from 5 Hz to 20 kHz.
5.6 Tone Burst Response
Figures 11,12 and 13 show how the meter responds to a sine wave input of
varied pulse duration for each response setting.

Nominal decay times for each time response setting are as follows:
FAST - 34.7 dB per second
SLOW - 4.35 dB per second
IMPULSE - 2.9 dB per second
PEAK measurements have a rise time constant of 50uS. The displayed
value is the highest peak occurring prior to a reset. Resets occur every
second in PAUSE. When the meter is in RUN a manual reset is required.
6. SPECIFICATIONS
Standards: Model 1200 : Type 1 ; Model 2200 : Type 2
ANSI Sl.43-1997, ANSI sl.4-1983(R1997), IEC 651-1979,
IEC 804-1985
Display: 3 1/2 Digit Liquid Crystal Display. Level display
indicates to 0.1 dB resolution. An enunciator is included
for Battery Check.
Modes of
Operation: Measures sound pressure level (SPL) maximum level
(MAX), minimum level(MIN), and equivalent continuous
sound pressure level (LEQ) .
Range: 30 to 140 dBA SPL, 43 to 143 dBA PEAK
40 to 140 dBC SPL, 43 to 143 dBC PEAK
40 to 140 dBZ SPL, 43 to 143 dBZ PEAK
Pulse Range: 63 dB
Electrical
Noise Floor: 26 dBA typ., 30dBC typ., 35 dBZ typ.
Frequency
Weighting
Networks: A, C, and Z
Meter
Response: Fast, Slow, Impulse or Peak (50uS rise time constant).
Microphone: Removable .52 inch (13.5mm) prepolarized condenser
(electret) microphone.
Model 1200 - Type 1 accuracy, P/N: 059-523 BK 4936
Model 2200 - Type 2 accuracy, P/N: 056-317 QE 7052
AC Output: Approximately 0-1 Volt AC RMS
1 Kohm output impedance, 3.5 mm stereo jack
DC Output: Approximately 0-1 Volt DC
Each 0.167V change equals l0dB (1V/60dB) 1 Kohm
output impedance, 3.5 mm stereo jack

Detector: True RMS
Integration
Time: Signal Dependent - approximately 2.5 hours at a
constant 140dB SPL. Time will double with each 3dB
decrease in average SPL, until limited by battery life.
Overload
Indication: A '+' sign in the display indicates overload during Leq
measurement.
Accuracy: Within 0.5 dB at 23°C; Within 1.0 dB over the
temperature range of -10 C to +50 C
Level Range
Accuracy: +/- 0.5dB from 31.5 - 8000 Hz (1200)
+/- l.0dB from 20 - 12500 Hz (1200)
+/- 0.7dB from 31.5 - 8000 Hz (2200)
Temperature
Range: Operation: -10 C to +50 C
Storage
(less batteries): -20 C to +60 C
Operating
Humidity: 0 to 95% relative humidity, non-condensing.
Effect of
Electromagnetic
Fields: Negligible.
Effect of
Electrostatic
Fields: Negligible.
Battery: One 9-volt alkaline battery
ANSI/NEDA Type 1604A or IEC: Type 6LR61
Typical: Energizer 522 (Quest 058-176)
Battery Life: 9 Volt Alkaline, approximately 25 hours 9 Volt NICAD,
approximately 8 hours
Size: 2200: 2.8 x 7.6 x 1.3 inches (including mic)
1200: 2.8 x 9.7 x 1.3 inches (including mic)
Weight: 2200: 10.3 oz. (293 g.) including battery
1200: 10.8 oz. (306 g.) including battery

7. ACCESSORIES
56-990 Calibrator Adapter for 0.50 inch diameter microphone for Quest
"QC-" series calibrators
58-928 Calibrator Adapter for 0.50 inch diameter microphone for Quest
"CA-" series calibrators
59-344 WS-7 Windscreen for 0.50 inch microphone (pkg. of 3)
59-45 Tripod (Larger)
59-46 Tripod (Smaller)
59-703 Input Adapter - Female BNC jack to 1/2" microphone thread, with
18pF capacitance. Allows direct electrical signal input to the
meter.
59-899 IM-2 microphone cable (2 foot length)
59-733 ICM-10 microphone cable (10 foot length)
59-734 ICM-50 microphone cable (50 foot length)
QUEST SERVICE POLICY
Service Policy
The Quest product you have purchased is one of the finest sound measur-
ing instruments available. It is backed by our full one year warranty which seeks
to insure complete customer satisfaction. This is your assurance that you can
expect prompt courteous service for your equipment from the entire Quest
service organization.
Should your Quest equipment need to be returned for repair or recalibra-
tion, please contact the Service Department at [phone] (USA) or Fax
[phone] for a Return Authorization Number. The RA number is valid for
30 days, and must be shown on the shipping label and purchase order/cover let-
ter. If you are unable to return instruments in that time call for a new RA num-
ber. Send it prepaid and properly packed in the original shipping carton directly
to Quest Technologies, 1060 Corporate Center Drive, Oconomowoc, WI 53066
U.S.A.
Repair or replacement work done under warranty will be performed free of
charge, and the instrument will be returned to you prepaid. Your copy or a
photocopy of the Quest Registration Card will serve as proof of warranty should
the factory require this information.
If for any reason you should find it necessary to contact the factory regard-
ing service or shipping damage, please direct your calls or letters to the attention
of the Service Manager, Quest Technologies, [phone] or (800) 245-
0779. Office hours are from 7 AM to 6 PM (Central Standard Time) Monday
through Friday.
For service or recalibration outside the U.S.A., please contact your local
Quest Dealer or fax Quest U.S.A. at 1-262-567-4047.

QUEST WARRANTY POLICY
Warranty Policy
Quest Technologies warrants our instruments to be free from defects in
materials and workmanship for one year under normal conditions of use and
service. For U.S.A. customers we will replace or repair (our option) defective
instruments at no charge, excluding batteries, abuse, misuse, alterations, physi-
cal damage, or instruments previously repaired by other than Quest
Technologies. Microphones, sensors, and printers may have shorter warranty
periods. This warranty states our total obligation in place of any other warranties
expressed or implied. Our warranty does not include any liability or obligation
directly resulting from any defective instrument or product or any associated
damages, injuries, or property loss, including loss of use or measurement data.
For warranty outside the U.S.A., a minimum one year warranty applies to
the same limitation and exceptions as above with service provided or arranged
through the authorized Quest distributor or our Quest European Service
Laboratory. Foreign purchasers should contact the local Quest distributor for
details.
1060 Corporate Center Drive • Oconomowoc, WI 53066 USA
800-245-0779 • Fax: [phone] • http://quest-technologies.com
Printed in U.S.A. 56-653
Rev. A