PCE Instruments PCE-HDM 7 User Manual

User Manual

User manuals in various languages (français,

italiano, español, português, nederlands, türk, polski,

русский, 中文) can be found by using our

product search on: www.pce-instruments.com

Last change: 28 November 2018

v1.0

English

Electrical Tester PCE-HDM 7

© PCE Instruments

Contents

1 Safety notes ........................................................................................... 1

1.1 International safety symbols ............................................................................................. 2

1.2 Input limits ........................................................................................................................ 2

1.3 Safety category ratings ..................................................................................................... 3

2 Specifications ........................................................................................ 4

3 Device description ................................................................................ 6

3.1 Delivery contents .............................................................................................................. 7

4 On / off .................................................................................................... 7

5 Measuring functions ............................................................................. 8

5.1 AC/DC voltage measurements ......................................................................................... 8

5.2 Low Z AC/DC voltage measurements ............................................................................... 8

5.3 AC current measurements ................................................................................................ 9

5.4 DC current measurements ............................................................................................... 9

5.5 Frequency and % duty cycle measurements ...................................................................10

5.6 Resistance measurements ..............................................................................................10

5.7 Diode test ........................................................................................................................11

5.8 Continuity ........................................................................................................................11

5.9 Capacitance measurements ............................................................................................12

5.10 Temperature measurements ...........................................................................................12

6 Operation ............................................................................................. 13

6.1 Auto Power Off ................................................................................................................13

6.2 MODE button ..................................................................................................................13

6.3 MAX/MIN button ..............................................................................................................13

6.4 Bluetooth/Flashlight button ..............................................................................................13

6.5 HOLD/Backlight button ....................................................................................................13

7 Battery and fuse replacement ............................................................ 14

8 Warranty ............................................................................................... 15

9 Disposal ............................................................................................... 15

© PCE Instruments

1 Safety notes

Please read this manual carefully and completely before you use the device for the first time. The
device may only be used by qualified personnel and repaired by PCE Instruments personnel.
Damage or injuries caused by non-observance of the manual are excluded from our liability and
not covered by our warranty.

• The device must only be used as described in this instruction manual. If used otherwise,
this can cause dangerous situations for the user and damage to the meter.

• The instrument may only be used if the environmental conditions (temperature, relative
humidity, …) are within the ranges stated in the technical specifications. Do not expose
the device to extreme temperatures, direct sunlight, extreme humidity or moisture.

• Do not use the meter during thunderstorms.

• Do not expose the device to shocks or strong vibrations. Dropping it can damage the

electronic parts or the case.

• The case should only be opened by qualified PCE Instruments personnel.

• Never use the instrument when your hands are wet. Keep the meter dry.

• You must not make any technical changes to the device.

• The appliance should only be cleaned with a damp cloth. Do not use chemicals,

cleaning solvents or detergents.

• The device must only be used with accessories from PCE Instruments or equivalent.

• Before each use, inspect the case for visible damage. If any damage is visible on the

meter or its test leads, do not use the device.

• Do not use the meter if it operates incorrectly. Protection may be compromised.

• Do not operate meter while Low Battery warning is on. Replace batteries immediately.

• Use only new batteries of the recommended size and type. Remove old or weak

batteries to avoid leakage and damage to the meter.

• If the meter is not used for a longer period of time, remove the batteries.

• Do not use the instrument in explosive atmospheres or near explosive vapours, dust or

gases.

• The measurement range as stated in the specifications must not be exceeded under
any circumstances.

• Ensure that the test leads are fully seated in the input jacks and keep your fingers away
from the metal probe tips when taking measurements.

• Before changing functions using the selector switch, always disconnect the test leads
from the circuit under test.

• Use only UL listed test leads with the proper safety category rating.

• Comply with all applicable safety codes. Use approved personal protective equipment

when working near live electrical circuits-particularly when there is arc-flash hazard.

• Use caution on live circuits. Voltages above 30 V AC RMS, 42 V AC peak, or 60 V DC
pose a shock hazard.

• Verify functionality before using meter by measuring a known live voltage.

• Do not apply voltage or current that exceeds the meter’s maximum rated input limits.

• Non-observance of the safety notes can cause damage to the device and injuries to

the user.

© PCE Instruments

1

We do not assume liability for printing errors or any other mistakes in this manual.

Indicates the terminal(s) so marked must not be connected to a circuit where
the voltage with respect to earth ground exceeds the maximum safety rating
of the meter.

This symbol can appear next to another symbol or connection and indicates
the user must refer to the manual for important safety information.

Indicates hazardous voltages may be present.

Equipment is protected by double or reinforced insulation.

Function

Maximum input

Voltage AC or DC

600 V AC RMS / 600 V DC

Low Z

300 V AC RMS / 300 V DC

Current AC or DC

10 A 600 V fast acting fuse (10 A for 30
seconds max. every 15 minutes)

Resistance, continuity, diode test,
capacitance, frequency, duty cycle

600 V AC RMS / 600 V DC
Temperature

300 V AC RMS or 300 V DC

We expressly point to our general guarantee terms which can be found in our general terms of
business.

If you have any questions please contact PCE Instruments. The contact details can be found at
the end of this manual.

1.1 International safety symbols

1.2 Input limits

© PCE Instruments

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1.3 Safety category ratings

Category rating

Brief description

Typical applications

Cat II

Single phase receptacles
and connected loads

• Household appliances,
power tools

• Outlets more than 30 ft
(10 m) from a Cat III source

• Outlets more than 60 ft
(20 m) from a Cat IV source

Cat III

Three phase circuits and
single phase lighting circuits
in commercial buildings

• Equipment in fixed
installations such as
3-phase motors, switchgear
and distribution panels

• Lighting circuits in
commercial buildings

• Feeder lines in industrial
plants

• Any device or branch circuit
that is close to a Cat III
source

1 – Insulated tip on

2 – Insulated tip removed

The measurement category (CAT) rating and voltage rating is determined by a combination of the
meter, test probes and any accessories connected to the meter and test probes. The combination
rating is the LOWEST of any individual component.

WARNING: Operation is limited to CAT II applications when the insulated tips are removed from
one or both test probes. Refer to the input limits section in this manual for maximum voltage
ratings.

© PCE Instruments

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2 Specifications

Insulation

Class 2, double insulation

Case

Double molded, IP 67 waterproof and dust­proof

Diode test

Test current max. 1.5 mA, open circuit
voltage 3 V typical

Continuity test

Audible signal if the resistance is approx. 50
or less

Low battery indication
“ ” is displayed

Display

4000 count LCD

Overrange indication

“OL” is displayed

Polarity

Minus symbol “-“ is displayed for negative
polarity

Measurement rate

2 readings per second, nominal

Auto Power Off

After approx. 15 minutes of inactivity

Input impedance

10 MΩ AC/DC voltage

AC response

True RMS

AC bandwidth

50 … 400 Hz

Batteries

3 x 1.5 V AAA batteries

Fuse

10 A / 600 V (5 x 20 mm) fast blow

Operating conditions

0 … 40 °C / 32 … 104 °F
<70 % RH

Storage conditions

-10 … 60 °C / 14 … 140 °F
<80 % RH

Operating altitude

Max. 2000 m

Dimensions

147 x 68 x 50 mm

Weight

318 g

Safety

Complies with UL 61010-1 V.3 for
measurement category lll 600 V, pollution
degree 2

Function

Range

Resolution

Accuracy
±(% of reading + digits)

AC voltage

4.000 V

1 mV

±(1.0 % + 5)

40.00 V

10 mV

±(1.2 % + 5)

400.0 V

0.1 V

±(1.5 % + 5)
600 V

1 V

Function

Range

Resolution

Accuracy
±(% of reading + digits)

Low Z
AC voltage

4.000 V

1 mV

±(1.5 % +5)

40.00 V

10 mV

40.00 V

0.1 V

Accuracy is given at 18 … 28 °C (65 … 83 °F), ≤70 RH.

Input protection: 600 V DC or 600 V AC RMS
Input impedance: 10 M

AC Response: 50 … 60 Hz

All AC voltage ranges are specified from 5 % of range to 100 % of range
Input protection: 300 V AC RMS or 300 V DC
Input impedance: approx. 3 kΩ

© PCE Instruments

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AC Response: 50 … 60 Hz

Function

Range

Resolution

Accuracy
±(% of reading + digits)

DC voltage

400.0 mV

0.1 mV

±(1.0 % + 8)

4.000 V

1 mV

±(1.0 % + 3)

40.00 V

10 mV

400.0 V

0.1 V

600 V

1 V

±(1.2 % + 3)

Function

Range

Resolution

Accuracy
±(% of reading + digits)

Low Z
DC voltage

400.0 mV

0.1 mV

±(1.5 % + 5)

4.000 V

1 mV

40.00 V

10 mV

400.0 V

0.1 V

Function

Range

Resolution

Accuracy
±(% of reading + digits)

AC current

4.000 A

1 mA

±(2.5 % + 3)

10.00 A

10 mA

Function

Range

Resolution

Accuracy
±(% of reading + digits)

DC current

4.000 A

1 mA

±(2.0 % + 3)

10.00 A

10 mA

Function

Range

Resolution

Accuracy
±(% of reading + digits)

Resistance

400.0 Ω

0,1 Ω

±(1.5 % + 5)

4.000 kΩ

1 Ω

40.00 kΩ

10 Ω

400.0 kΩ

100Ω

4.000 MΩ

1 kΩ

±(2.0% +10)

40.00 MΩ

10 kΩ

Function

Range

Resolution

Accuracy
±(% of reading + digits)

Capacitance

40.00 nF

10 pF

±(5.0 % + 35)

400.0 nF

100 pF

±(3.0 % + 5)

4.000 μF

0.001 μF

40.00 μF

0.01 μF

400.0 μF

0.1 μF

4000 μF

1 μF

±(5.0 % + 5)

Input protection: 600 V DC or 600 V AC RMS
Input impedance: 10 M

Input protection: 300 V AC RMS or 300 V DC
Input impedance: approx. 3k

Overload protection: 10 A/600 V fuse
AC response: 50 … 60 Hz

Overload protection: 10 A/600 V fuse

Input protection: 600 V AC RMS or 600 V DC

Input protection: 600 V AC RMS or 600 V DC

© PCE Instruments

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Function

Range

Resolution

Accuracy
±(% of reading + digits)

Frequency

9.999 Hz

0.001 Hz

±(1.0 % + 5)

99.99 Hz

0.01 Hz

999.9 Hz

0.1 Hz

9.999 kHz

1 Hz

99.99 kHz

10 Hz

999.9 kHz

100 Hz

±(1.2 % + 5)

9.999 MHz

1 kHz

Function

Range

Resolution

Accuracy
±(% of reading + digits)

Duty cycle

1.0 … 99.9 %

0.1 %

±(1.2 % + 2)

Function

Range

Resolution

Accuracy
±(% of reading +
digits)

Temperature

-18 … 760 °C

0.1 °C

±(2.0 % + 5 °C)

0 … 1400 °F

0.1 °F

±(2.0 % + 9 °F)

1- LCD
2- MAX/MIN button
3- MODE button
4- Rotary function switch
5- 10 A input jack
6- COM input jack

7- V/Ω/ /CAP Hz%/Temp input jack
8- HOLD/Backlight button
9- Bluetooth/Flashlight button
10- Flashlight

Input protection: 600 V AC RMS or 600 V DC
Sensitivity: >8V RMS

Input protection: 600 V AC RMS or 600 V DC
Pulse width: 0.1 … 100 mS
Frequency range: 5Hz … 10kHz
Sensitivity: >8 V RMS

Input protection: 300 V AC RMS or 300 V DC

3 Device description

Meter

© PCE Instruments

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Display

V

Volts A

Amperes

~

Alternating current
Direct current

-

Negative reading

Hz

Hertz (frequency)

%

Percent (duty cycle)

Ω

Resistance

Continuity

Diode test

F

Farads (capacitance)

N

Nano (10-9)

° F

Degrees Fahrenheit

° C

Degrees Centigrade

µ

Micro (10-6)

M

Milli (10-3)

k

Kilo (103)

M

Mega (106)

OL

Overload

Auto Power Off

Low battery

AUTO

Autoranging

HOLD

Display hold

LOZ

Low Z (impedance)

MAX/MIN

Maximum/Minimum

Bluetooth

3.1 Delivery contents

1 x multimeter PCE-HDM 7
1 x test lead
1 x storage bag
1 x K-type thermocouple
1 x temperature adaptor
1 x user manual
2 x AAA 1.5 batteries
1 x seal

4 On / off

To switch on the device, turn the rotary switch to the desired measuring function. The meter will
power on immediately. To turn off the meter, turn the rotary function switch to “OFF”. The meter
will switch off automatically.

© PCE Instruments

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5 Measuring functions

1. Set the rotatory function switch to the V position.

2. To select AC or DC voltage, press the MODE-button until the
AC “~” or DC “ ”symbol appears on the LCD.

3. Insert the black test lead into the COM input jack and the red
test lead into the V input jack.

4. Touch the test lead probes to the circuit under test. If
measuring DC voltage, touch the red test lead to the positive
side of the circuit and the black test lead to the negative side
of the circuit.

5. Read the voltage on the display.

1. Set the rotary function switch to the Low Z position.

2. To select AC or DC voltage, press the MODE button until the
AC “~” or DC “ ” symbol appears on the LCD.

3. Insert the black test lead into the COM input jack and the red
test lead into the V input jack.

4. Touch the test leads to the circuit under test. If measuring DC
voltage, touch the red test lead to the positive side of the
circuit and the black test lead to the negative side of the
circuit.

5. Read the voltage on the LCD.

5.1 AC/DC voltage measurements
WARNING: Observe all safety precautions when working on live voltages.

5.2 Low Z AC/DC voltage measurements
WARNING: Observe all safety precautions when working on live voltages. Do not connect to

circuits that exceed 300 V AC RMS or 300 V DC when the meter is set to Low Z.

Low Z is used to check for “ghost” voltage. Ghost voltages are present when non-powered wires
are in close proximity to powered wires. Capacitive coupling makes it appear that non-powered
wires are connected to a real source of voltage. The Low Z setting places a load on the circuit,
which greatly reduces the voltage reading when connected to ghost voltage.

© PCE Instruments

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5.3 AC current measurements

1. Set the rotary function switch to the 10 A~ position.

2. Insert the black test lead into the COM input-jack and the red
test lead into the 10 A input jack.

3. Remove power from the circuit under test, then open up the
circuit at the point where you wish to measure current.

4. Touch the test lead probes in series with the circuit being
measured.

5. Apply power to the circuit.

6. Read the current on the LCD.

1. Set the rotary function switch to the 10 A position.

2. Insert the black test lead into the COM input jack and the red
test lead into the 10 A input jack.

3. Remove power from the circuit under test, then open up the
circuit at the point where you wish to measure current.

4. Touch the test lead probes in series with the circuit being
measured. Touch the red probe to the positive side of the
circuit and touch the black probe to the negative side of the
circuit.

5. Apply power to the circuit.

6. Read the current on the display.

WARNINGS: Observe all safety precautions when working on live circuits. Do not measure
current on circuits that exceed 600 V. Measurements in the 10 A range should be limited to 30
seconds maximum every 15 minutes.

5.4 DC current measurements
WARNINGS: Observe all safety precautions when working on live circuits. Do not measure

current on circuits that exceed 600 V. Measurements in the 10 A range should be limited to 30
seconds maximum every 15 minutes.

© PCE Instruments

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5.5 Frequency and % duty cycle measurements

1. Set the rotary function switch to the Hz % position.

2. To select Frequency or % Duty Cycle, press the MODE
button until the “Hz” or “%” symbol appears on the LCD.

3. Insert the black test lead into the COM input jack and the red
test lead into the V input jack.

4. Touch the test lead probes to the circuit under test.

5. Read the frequency or % duty cycle on the LCD.

1. Set the rotary function switch to the Ω position.

2. Press the MODE button until the “Ω” symbol appears on the
LCD.

3. Insert the black test lead into the COM input jack and the red
test lead into the V input jack.

4. Touch the test lead probes to the component under test. If
the component is installed in a circuit, it is best to disconnect
one side before testing to eliminate interference with other
devices.

5. Read the resistance on the display.

WARNING: Observe all safety precautions when working on live circuits.

5.6 Resistance measurements
WARNING: Never test resistance on a live circuit.

© PCE Instruments

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5.7 Diode test

1. Set the rotary function switch to the Ω position.

2. Press the MODE button until the symbol appears on

the LCD display.

3. Insert the black test lead into the COM input jack and the red

test lead into the ? input jack.

4. Touch the test lead probes to the diode under test.

5. Forward voltage will indicate 0.4 to 0.7 on the display. Reverse

voltage will indicate “OL”. Shorted devices will indicate near 0
and an open device will indicate “OL” in both polarities.

1. Set the rotary function switch to the Ω position.

2. Press the MODE button until the “ ” symbol appears on the

display.

3. Insert the black test lead into the COM input jack and the red

test lead into the Ω input jack.

4. Touch the test lead probes to the device or wire under test.

5. A beeper will sound if the resistance is approximately 50 Ω or

less and the resistance value will be shown on the LCD.

WARNING: Never test diodes in a live circuit.

5.8 Continuity
WARNING: Never test continuity on a live circuit.

© PCE Instruments

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5.9 Capacitance measurements

1. Set the rotary function switch to the Ω position.

2. Insert the black test lead into the COM input jack and the red

test lead into the Ω input jack.

3. Press the MODE button until the “nF” symbol appears on the

LCD.

4. Touch the test lead probes to the capacitor under test.

5. Read the capacitance value on the LCD. It may take up to a

minute to get a stable reading on large capacitors.

1. Set the rotary function switch to the °F °C position.

2. Press the MODE button to select readings in °C or °F.

3. Connect the Temperature Probe to the banana plug adaptor.

Note the – and + markings on the adaptor. Connect the adaptor
to the meter, making sure the – side goes into the COM input
jack and the + side goes into the °F °C input jack.

4. Touch the tip of the temperature probe to the object being

measured. Keep the probe touching the object until the reading
stabilizes (about 30 s).

5. Read the temperature on the LCD.

WARNING: Safely discharge capacitors before taking capacitance measurements.

5.10 Temperature measurements
WARNING: Do not touch the temperature probe to live circuits.

© PCE Instruments

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6 Operation

6.1 Auto Power Off

The meter automatically turns off after 15 minutes of activity. To reset the meter after it shuts off,
turn rotary function switch to the off position and then set the switch to the desired function. To
disable Auto Power Off, turn the rotary function switch to the off position. Press and hold the
MODE button and set the rotary function switch to the desired function. Release the MODE button

when the “ ” symbol disappears from the display. Auto Power Off is now disabled. Auto Power
Off will be restored when the meter is turned off and back on.

6.2 MODE button

Used to select AC or DC voltage, Hz or % duty cycle, ohms, diode Test, continuity or capacitance,
and ° C and ° F.

6.3 MAX/MIN button

1. Momentarily press the MAX/MIN button to activate MAX/MIN mode. The “MAX” indicator
will appear on the LCD. The meter will display and hold the maximum reading and will
update when a higher “max” occurs.

2. Momentarily press the MAX/MIN button again to view the lowest reading. The “MIN”
indicator will appear on the LCD display. The meter will display and hold the minimum
reading and will update when a lower “min” occurs.

3. Press and hold the MAX/MIN button to end MAX/MIN mode and return to normal
operation.

NOTE: MAX/MIN does not work with frequency, duty cycle, diode test, continuity and capacitance.

6.4 Bluetooth/Flashlight button

Momentarily press the Bluetooth/Flashlight button to turn the flashlight on and off. Bluetooth
allows readings to be displayed and stored on mobile devices. To activate Bluetooth, press and

hold the Bluetooth/Flashlight button until the “ ” symbol appears on the display. Bluetooth
should be disabled when not connected to a mobile device in order to conserve battery power.

To turn off Bluetooth, press and hold the Bluetooth/Flashlight until the “ ” symbol no longer
appears on the display. Use the “Meterbox Pro” app from your Android or iOS store to connect
the meter to your phone..

6.5 HOLD/Backlight button

To freeze the reading on the display, momentarily press the HOLD button. “HOLD” will appear
on the LCD while the reading is being held. Momentarily press the HOLD button again to return
to normal operation. The backlight illuminates the LCD when the ambient light is too low to view
the displayed readings. To switch on the backlight, press and hold the HOLD button until the
backlight turns on. To turn it off, press and hold the HOLD button until the backlight turns off.

© PCE Instruments

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7 Battery and fuse replacement

Battery replacement
WARNING: To avoid electric shock, remove the test leads from the meter before removing the

battery/fuse cover.

1. Lift up the tilt stand.

2. Loosen the two Phillips screws on the battery/fuse cover.

3. Remove the battery/fuse cover.

4. Replace the batteries with three AAA batteries.

5. Observe proper polarity as shown inside battery compartment.

6. Install the battery cover and tighten the screws.

WARNING: To avoid electric shock, do not operate meter until the battery/fuse cover is securely
fastened to the meter.

Fuse replacement
WARNING: To avoid electric shock, remove the test leads from the meter before removing the

battery/fuse cover.

1. Lift up the tilt stand.

2. Loosen the two Phillips screws on the battery/fuse cover.

3. Remove the battery/fuse cover.

4. Gently remove fuse and install new fuse into the holder.

5. Always use a UL recognized fuse of the proper size and value: 10 A/600 V (5 x 20 mm)
fast blow.

6. Install the battery cover and tighten the screws.

WARNING: To avoid electric shock, do not operate meter until the battery/fuse cover is securely
fastened to the meter.

© PCE Instruments

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8 Warranty

You can read our warranty terms in our General Business Terms which you can find here:

https://www.pce-instruments.com/english/terms.

9 Disposal

For the disposal of batteries in the EU, the 2006/66/EC directive of the European Parliament
applies. Due to the contained pollutants, batteries must not be disposed of as household waste.
They must be given to collection points designed for that purpose.

In order to comply with the EU directive 2012/19/EU we take our devices back. We either re-use
them or give them to a recycling company which disposes of the devices in line with law.

For countries outside the EU, batteries and devices should be disposed of in accordance with
your local waste regulations.

If you have any questions, please contact PCE Instruments.

© PCE Instruments

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PCE Instruments contact information

Germany France Spain

PCE Deutschland GmbH PCE Instruments France EURL PCE Ibérica S.L.
Im Langel 4 23, rue de Strasbourg Calle Mayor, 53
D-59872 Meschede 67250 Soultz-Sous-Forets 02500 Tobarra (Albacete)
Deutschland France España
Tel.: [phone] Téléphone: [phone] Tel. : [phone]
Fax: [phone] Numéro de fax: [phone] Fax: [phone]
[e-mail] [e-mail] [e-mail]
www.pce-instruments.com/deutsch www.pce-instruments.com/french www.pce-instruments.com/espanol

Germany United Kingdom Italy

Produktions- und PCE Instruments UK Ltd PCE Italia s.r.l.
Entwicklungsgesellschaft mbH Units 11 Southpoint Business Park Via Pesciatina 878 / B-Interno 6
Im Langel 26 Ensign Way, Southampton 55010 Loc. Gragnano
D-59872 Meschede Hampshire Capannori (Lucca)
Deutschland United Kingdom, SO31 4RF Italia
Tel.: [phone] Tel: [phone] Telefono: [phone]
Fax: [phone] 9971 Fax: [phone] Fax: [phone]
[e-mail] [e-mail] [e-mail]
www.pce-instruments.com/deutsch www.pce-instruments.com/english www.pce-instruments.com/italiano

The Netherlands Chile Hong Kong

PCE Brookhuis B.V. PCE Instruments Chile S.A. PCE Instruments HK Ltd.
Institutenweg 15 RUT: 76.154.057-2 Unit J, 21/F., COS Centre
7521 PH Enschede Calle Santos Dumont N° 738, Local 4 56 Tsun Yip Street
Nederland Comuna de Recoleta, Santiago Kwun Tong
Telefoon: [phone] Tel. : [phone] Kowloon, Hong Kong
Fax: [phone] Fax: [phone] Tel: [phone]
[e-mail] [e-mail] [e-mail]
www.pce-instruments.com/dutch www.pce-instruments.com/chile www.pce-instruments.cn

United States of America Turkey China

PCE Americas Inc. PCE Teknik Cihazları Ltd.Şti. PCE
711 Commerce Way suite 8 Halkalı Merkez Mah. 1519 Room, 6 Building
Jupiter / Palm Beach Pehlivan Sok. No.6/C Zhong Ang Times Plaza
33458 FL 34303 Küçükçekmece - İstanbul
USA Türkiye 102300 Beijing
Tel: [phone] Tel: [phone] China
Fax: [phone] Faks: 0212 705 53 93 Tel: [phone]
[e-mail] [e-mail] [e-mail]
www.pce-instruments.com/us www.pce-instruments.com/turkish www.pce-instruments.cn

(Beijing)

Technology Co

No. 9 Mentougou Road, Tou Gou District

.,

Limited

© PCE Instruments

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