Enraf Nonius TensMed 911 User manual

TensMed 911
User Manual

Copyright: Enraf-Nonius B.V.
P.O.Box 12080
3004 GB Rotterdam
TheNetherlands
Tel:[phone]
Fax:[phone]
[e-mail]
www.enraf-nonius.com
Partnumber:1427.755-41
August 2005

1ÿ
TensMed 911
User Manual

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Table of Content
1 Product Description..........................................................................................3
2 Foreword ...........................................................................................................3
2.1 This manual .........................................................................................................................3
2.2 Product liability.....................................................................................................................3
2.3 Limitations of liability............................................................................................................3
3 Precautionary Instructions ..............................................................................4
4 Intended Purpose..............................................................................................5
4.1 Pain Management (TENS)...................................................................................................5
4.1.1 Indications/Contraindications and Adverse Effects for Pain Management............................5
4.1.2 Current Waveform ................................................................................................................5
5 Package Contents.............................................................................................6
5.1 Standard Accessories..........................................................................................................6
5.2 Optional Accessories...........................................................................................................6
6 Installation.........................................................................................................6
7 Application of Electrodes.................................................................................7
7.1 Before treatment..................................................................................................................7
7.2 Self-adhesive electrodes. ....................................................................................................7
7.3 Electrolytic effects................................................................................................................7
7.4 Current density.....................................................................................................................7
7.5 Connection and disconnection reactions.............................................................................7
8 Operating Instructions .....................................................................................8
8.1 Operator Controls ................................................................................................................8
8.2 Intensity adjustment.............................................................................................................9
8.3 Safety features.....................................................................................................................9
8.4 Additional features...............................................................................................................9
8.5 Usage monitor......................................................................................................................9
8.6 Basic Operation ...................................................................................................................9
8.6.1 Operation by Program ..........................................................................................................9
8.6.2 Programs............................................................................................................................10
8.6.3 Manual operation................................................................................................................10
8.7 Doctor Locking...................................................................................................................10
8.7.1 Program Locking.................................................................................................................10
8.7.2 Manual Program Locking....................................................................................................11
8.8 User Maintenance..............................................................................................................11
8.8.1 Cleaning of apparatus.........................................................................................................11
8.8.2 Patient cable.......................................................................................................................11
8.8.3 Care of electrodes ..............................................................................................................11
8.9 End of life...........................................................................................................................11
9 Stimulator Output Parameters.......................................................................12
10 Illustrations .....................................................................................................12
10.1 Asymmetrical biphasic TENS waveform ........................................................................12
10.2 Asymmetrical biphasic burst TENS waveform ...............................................................12
11 Technical Specifications................................................................................13

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1 Product Description
The TensMed 911 is a 2-channel electrotherapy apparatus, that has optimized pain management, using
asymmetric TENS current waveforms.
The apparatus provides both protocol driven and manual operation.
Protocol driven operation provides both factory or user defined treatments. In this mode the 2 channels
are linked, i.e. parameter settings apply to all channels simultaneously, the treatment timer included.
With manual operation the channels are linked, the current amplitude can be set individually on each
channel.
WARNING (USA only): The TensMed 911 is a prescription device that should only be used under the
supervision or by the order of a physician or other licensed healthcare provider.
2 Foreword
2.1 This manual
This manual has been written for the owners and operators of the TensMed 911. It contains general
instructions on operation, precautionary practices, maintenance and parts information. In order to
maximize use, efficiency and the lifetime of your unit, please read this manual thoroughly and become
familiar with the controls as well as the accessories before operating the unit.
Specifications put forth in this manual were in effect at the time of publication. However, owing to Enraf-
Nonius BV policy of continual improvement, changes to these specifications may be made at any time
without obligation on the part of Enraf-Nonius BV.
2.2 Product liability
A law on Product Liability has become effective in many countries. This Product Liability law implies,
amongst other things, that once a period of 10 years has elapsed after a product has been brought into
circulation, the manufacturer can no longer be held responsible for possible shortcomings of the product.
2.3 Limitations of liability
To the maximum extent permitted by applicable law, in no event will Enraf-Nonius or its suppliers or
resellers be liable for any indirect, special, incidental or consequential damages arising from the use of or
inability to use the product, including, without limitation, damages for loss of goodwill, work and
productivity, computer failure or malfunction, or any and all other commercial damages or losses, even if
advised of the possibility thereof, and regardless of the legal or equitable theory (contract, tort or
otherwise) upon which the claim is based. In any case, Enraf-Nonius’s entire liability under any provision
of this agreement shall not exceed in the aggregate the sum of the fees paid for this product and fees for
support of the product received by Enraf-Nonius under a separate support agreement (if any), with the
exception of death or personal injury caused by the negligence of Enraf-Nonius to the extent applicable
law prohibits the limitation of damages in such cases.
Enraf-Nonius can not be held liable for any consequence resulting from incorrect information provided by
its personnel, or errors incorporated in this manual and / or other accompanying documentation (including
commercial documentation)
The opposing party (product’s user or its representative) shall disclaim Enraf-Nonius from all claims
arising from third parties, whatever nature or whatever relationship to the opposing party.

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3 Precautionary Instructions
In this section general Warnings and Precautions are listed, that you should be aware of when using the
TensMed 911. See also chapter 4 for Warnings and Precautions, that apply to Muscle Stimulation
applications in particular.
WARNING:
• Federal law (USA only) restricts this device to sale by, or on the order of, a physician or licensed
practitioner.
This device should be used only under the continued supervision of a physician or licensed
practitioner.
• Do not operate the unit in an environment of short-wave or micro-wave diathermy use as this can
result in burns beneath the electrodes.
• Care must be taken when operating this equipment around other equipment. Potential
electromagnetic or other interference could occur to this or to the other equipment. Try to
minimize this interference by not using other equipment in conjunction with it.
• Electronic monitoring equipment (such as ECG monitors and ECG alarms) may not operate
properly when electrical stimulation is being utilized.
• This equipment is not suitable for use in the presence of flammable anaesthetic mixture with air,
oxygen, or nitrous oxide.
• This device should be kept out of the reach of children.
CAUTION:
• Read, understand and practice the precautionary and operating instructions. Know the limitations
and hazards associated with using any electrical stimulation device. Observe the precautionary
and operational decals placed on the unit
• Do not operate the TensMed 931 when connected to any unit other than Enraf-Nonius BV
devices.
• This unit should be operated in temperatures between 10 °C and 40 °C (50 °F and 104 °F), with a
Relative Humidity ranging from 10%-90%.
• Do not expose the unit to direct sunlight, heat radiated from a heat radiator, excessive amounts of
dust, moisture, vibrations and mechanical shocks.
• In the case of ingress of liquids, unplug the unit from the mains supply and have it checked by an
authorized person (see the paragraph on technical maintenance).
• Do not use sharp objects such as a pencil point or ballpoint pen to operate the buttons on the
control panel as damage may result.
Before administering any treatment to a patient you should become acquainted with the operating
procedures for each mode of treatment available, as well as the indications, contraindications, warnings
and precautions. Consult other resources for additional information regarding the application of
electrotherapy.

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4 Intended Purpose
4.1 Pain Management (TENS)
4.1.1 Indications/Contraindications and Adverse Effects for Pain Management
Indications:
• Symptomatic relief of chronic, intractable pain. Management of pain associated with post-
traumatic or postoperative conditions.
Contraindications:
• This device should not be used for symptomatic pain relief unless etiology is established or
unless a pain syndrome has been diagnosed.
• This device should not be used on patients with on demand type cardiac pacemakers.
• This device should not be used over cancerous lesions.
• Electrode placements must be avoided that apply current to the carotid sinus region (anterior
neck).
• Electrode placements must be avoided that apply current transcereberally (through the head).
• Electrode placements must be avoided that apply current transthoracically (the introduction of
electrical current into the heart may cause cardiac arrhythmias).
Warnings:
• Benefits of TENS currents have not been established for pain of central origin.
• This device is to be used as a symptomatic treatment for pain and has no curative value.
Patients should be cautioned and their activities regulated if pain is suppressed that would
otherwise serve as a protective mechanism.
• The long-term effects of chronic electrical stimulation are unknown.
• Safety has not been established for the use of therapeutic electrical stimulation during pregnancy.
• Stimulation should not be applied over swollen, infected, or inflamed areas of skin eruptions. e.g.,
phlebitis, thrombophlebitis, varicose veins, etc.
• See also chapter 3, Precautionary Instructions, for general Warnings and Precautions.
Precautions:
• Isolated cases of skin rash may occur at the site of electrode placement following long-term
applications. The irritation may be reduced by use of an alternate conductive medium or an
alternative electrode placement.
• Effectiveness of this treatment is dependent upon patient selection.
• See also chapter 3, Precautionary Instructions, for general Warnings and Precautions.
Adverse Effects:
• Skin irritation and burns beneath the electrodes have been reported with the use of therapeutic
electrical stimulation.
4.1.2 Current Waveform
For pain management the TensMed 911 offers the asymmetrical biphasic pulsed current waveform, which
is often used in TENS (Transcutaneous Electrical Nerve Stimulation) applications. This waveform is an
alternating current, characterized by variable phase duration and a variable pulse frequency. Its typical
characteristics amplitude, phase duration, and rate of rise and decay are unequal for each phase with
respect to the baseline. The waveform is fully balanced, i.e. the phase charges of each phase are equal.
See paragraph 10 for a graphical representation and paragraph 9 for the available parameters.
To prevent accommodation to stimulation or to improve patient tolerance, the pulse frequency can be
varied through frequency modulation. Several frequency modulation programs are available.

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A burst frequency can be set for treating chronic pains, where the use of continuous stimulation with a low
pulse frequency would be too painful. A burst consists of an interrupted train of pulses. Each burst lasts
for 100 ms and the burst rate can separately be adjusted. See paragraph 10 for details. With this milder
TENS waveform it is easier to exceed the motorial threshold stimulus.
5 Package Contents
1427940 TensMed 911
5.1 Standard Accessories
The following accessories are included with your TensMed 911:
3444001 Electrode cable 2 mm, 2 pc in conformity with FDA CFR 898
3444057 EN-Trodes, self adhesive electrode 50x50 mm, 1 set 4 pc.
1427755 User manual TensMed 911
Alkaline AA 1,5 Volts (LR6) Batteries
Carry Pouch
5.2 Optional Accessories
3444056 EN-Trodes, self adhesive electrodes, size 32mm Ø, 1 pack = 10 sheets of 4 pc
3444135 EN-Trodes, self adhesive electrodes, size 50mm Ø, 1 pack = 10 sheets of 4 pc
3444143 EN-Trodes, self adhesive electrodes, size 70mm Ø, 1 pack = 10 sheets of 4 pc
3444057 EN-Trodes, self adhesive electrodes, size 50x50mm, 1 pack = 10 sheets of 4 pc
3444058 EN-Trodes, self adhesive electrodes, size 50x90mm, 1 pack = 10 sheets of 4 pc
3444146 EN-Trodes, self adhesive electrodes, double lead, size 50x100mm, 1 pack=10 sheets of 2pc
6 Installation
Insert Batteries:
Insert two batteries. (A diagram inside the battery compartment shows how to insert the batteries
correctly.)
To check if the batteries have been correctly fitted, press the ON/OFF button once and the LCD display
will start up and the LED Lights will come on. Press the ON/OFF button again to switch the unit off.
Use only AA Alkaline 1.5 volt batteries (LR6).
Do not mix old and new batteries.
The battery contains material that is noxious to environment. You should attend the local regulations
when disposing the battery.
Attach Leads:
Unravel leads and insert the plug(s) into either sockets in the end of the unit. If using only one lead use L1
(as marked on the unit next to the socket).
Attach Electrodes to leads:
Remove electrodes from the bag and connect to the leads.
Simply push the plug on the electrode pigtail into the socket on the lead.

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7 Application of Electrodes
ÿ
ÿÿ
ÿCAUTION:
• Connection of accessories other than the ones specified by the manufacturer can adversely
affect the safety of the patient and correct functioning of the equipment, and is therefore not
permitted.
NOTE:
• The description below applies to electrotherapy applications in general. The electrolytic effects
mentioned do not apply to the Tensmed 911 as this device only generates fully balanced TENS
currents, that do not contain a DC component.
7.1 Before treatment
• Check the patient for contraindications and warnings as described in paragraph 4.1 and 4.2
• Test the heat sensibility of the treatment area.
• Rinse the treatment area. Shaving a hairy skin is recommended.
7.2 Self-adhesive electrodes.
Self-adhesive electrodes have higher series impedance than carbon rubber electrodes. This can cause
the stimulator to terminate treatment at higher current amplitudes. When this occurs it is recommended to
continue the treatment with carbon rubber electrodes, combined with properly moistened sponge pads.
Self-adhesive electrodes are not recommended for use with currents that contain a DC component.
7.3 Electrolytic effects
Electrolysis occurs under the electrodes when current types with a DC component are applied. Because
the largest concentration of electrolytic by-products caused by ion migration occur under the electrodes,
we recommend the use of the supplied sponges to keep the effects to a minimum. Make sure that the
sponges are kept well moistened and place the thick side of the sponge between the flexible rubber
electrodes and the patient.
7.4 Current density
According to IEC 60601-2-10 the maximum permissible “current density” is 2 mA RMS. per cm². With the
rubber electrodes this requirement is automatically met, as the output current of the stimulator is limited to
50 mA RMS. With smaller electrodes, such as the 3.2 mm self adhesives, this is not the case. To verify
that the maximum permissible current density of 2 mA RMS. per cm² is not exceeded, divide the RMS
output current in mA by the effective electrode area in cm²: A value of less than 2 should result. For
asymmetrical TENS currents the RMS value of the output current can be calculated as follows:
IRMS =I
peak ÿ( Phase duration [µs] * pulse frequency [Hz] * 106)
For symmetrical TENS currents, the Phase duration should be multiplied by 2. The value of the peak
current Ipeak can be taken from the current display.
This device has Constant Current (CC) output characteristics, that may cause unpleasant connection and
disconnection reactions if the electrodes are not securely placed or lose contact with the skin. Make sure
the output is set to 0 mA when you apply or remove the electrodes.
7.5 Connection and disconnection reactions
This device has Constant Current (CC) output characteristics, that may cause unpleasant connection and
disconnection reactions if the electrodes are not securely placed or lose contact with the skin. Make sure
the output is set to 0 mA when you apply or remove the electrodes.

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8 Operating Instructions
8.1 Operator Controls
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5
26
17
8
[1] On / off button.
When the unit is switched on the yellow LED at the front of the unit will light and a single beep will sound.
Output intensity starts at zero.
The unit starts at the last program and/or manual setting used.
When the unit is switched off the LED will go out and two beeps will sound.
[2]+[6] Setting button
Allows you to adjust the setting of each Parameter selected in Menu.
When you are satisfied with the setting, press the Menu key again to save it.
[3] Adjustment buttons for the Amplitude in channel 1
Use this button to adjust the current amplitude in channel 1.
[4] Adjustment buttons for the Amplitude in channel 2
Use this button to adjust the current amplitude in channel 2.
[5] Menu / Pause button
The MENU function accesses only the Timer when preset programs have been selected.
When program “m” is selected, it allows you to set parameters manually. Parameters that can be selected
are:
Waveform, Frequency, Pulse Width, Constant or Burst, Timer
The PAUSE function interrupts a Program which is using the Timer.
It only operates when a program is running, with Intensity >0.
Hold down for 2 seconds to Pause.
Hold down again for 2 seconds to Resume.
When you resume the program the intensity resets to level 1 and the timer symbol flashes until the
intensity button is pressed
[7] KEYBOARD LOCK( ( ÿ)
Holding down the button with the key symbol for 2 secs locks all keys (including ON/OFF key) EXCEPT
INTENSITY DOWN.
If an attempt is made to alter settings while the keyboard is locked, the key symbol on the LCD flashes.
[8] PROGRAM SELECTOR ( )
The unit has 9 pre-set programs A,B,C,D,E, F, G, H, and I
The program m is for manual adjustment and allows to set Frequency, Pulse width, Constant, Burst and
Time.
Details of the programs are shown below.
When the unit is switched on, it will show the last program used.

ÿ
ÿÿ
ÿCAUTION:
Connection of accessories other than the ones specified by the manufacturer can adversely affect the
safety of the patient and correct functioning of the equipment, and is therefore not permitted.

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8.2 Intensity adjustment
The TensMed 911 has an intelligent intensity adjustment to minimise delay in waiting for the next work
period, and to avoid confusing the sensation from the two channels.
When either intensity button is pressed, the work/rest cycle is interrupted, and the other channel intensity
drops to zero. You can then set the intensity required. After you have finished setting, the intensity will
remain at the set level for 4 seconds, then both channels will begin the next rest period.
The first 2 presses of the Intensity button increase the output by about 6V. Thereafter each press of the
Intensity button changes intensity by about 1V in normal mode and 2V in high output mode.
If the Intensity button is held down > 0.5 sec it starts to scroll at two steps per sec (22 seconds to full
scale). If it is held > 2 seconds it scrolls at five steps per sec. When it is released it reverts to single steps.
The bar graph on the LCD shows the intensity selected.
The first segment lights as soon as intensity is above zero.
Each subsequent segment represents approx 4.5V (6 V in high intensity mode)
8.3 Safety features
If the unit is accidentally switched on and no other button is pressed within the next 5 minutes, the unit will
automatically switch off.
8.4 Additional features
The TensMed 911 unit has the following special features:
• SOUND:When the unit is switched on an audible beep will be emitted. When the unit is switched
off there will be two audible beeps.
• ON/OFF LIGHT:When the unit is on the LED light will light up. The light is located at the front of
the unit.
• LOW BATTERY WARNING: There is a low battery detector in the unit. The LCD screen will flash
the symbol of a battery when the batteries need replacing.
8.5 Usage monitor
USAGE MONITOR (For Professional Use)
A Usage Monitor is included to help your medical advisor plan your treatment. Press and hold down the
PROGRAM and MENU keys together for five seconds. The top left corner of the LCD screen will display
the length of time in hours that the unit has been used for. Press the same two keys again for five
seconds to return the screen to normal. Note that if the unit is switched off with the LCD screen
displaying the Usage Monitor it will be in this same mode when switched back on.
While the Usage monitor screen is open, Press LOCK and MENU keys together for five seconds to set to
zero.
8.6 Basic Operation
8.6.1 Operation by Program
• pre-set programs, identified by the letters Athrough to I.
• A manual setting, identified by the letter m, where the user may select the constant or burst mode
and the frequency and pulse width.
The effect of each program varies from one person to another even if they have the same type of pain.
Choose the program which suits you best.
If you are using a TENS unit for the first time, and have not been advised otherwise, start with program A.
Programs A, D & F use the “Pain Gate” to block pain messages from reaching the brain.
Increase the intensity slowly until a strong but comfortable level of sensation is reached.
Keep your first treatment to 1 hour. Remember that you will have to increase the intensity during the
treatment to keep the sensation constant as the body gets used to the feeling.
Programs B, C and Eproduce a pulsing or tapping sensation associated with muscle contractions. It is
desirable that you experience a muscle contraction with these programs, therefore the intensity should be

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increased and maintained at a level that produces muscle activity. In these programs pain relief is
achieved by triggering the release of endorphins, the body’s own pain relief mechanism.
If you find the muscle contractions with programs Band Euncomfortable, switch to program C. In mode
Cthe stimulus is delivered in bursts, i.e. a group of pulses rather than a single pulse. You will get muscle
activity at a lower intensity and thus you may find it more comfortable.
If you are using programs that produce muscle contractions, it is recommended that you also keep your
first treatment short (approximately 15 minutes) to check your response. Assuming no adverse reaction,
you can then increase subsequent treatment periods but subject to a maximum of 60 minutes at a time to
avoid muscle fatigue.
8.6.2 Programs
Prog Sensation Use for
A Tingling
Pins & Needles Most types of acute and chronic pain
B Pulsing
&
Tapping
Chronic pains such as
backpain, arthritis, rheumatism.
Avoid use on traumatised muscles
C Pulsing
&
Tapping
Chronic pain such as
backpain, arthritis, rheumatism.
Avoid use on traumatised muscles
D Tingling,
Pins
& Needles
Most types of
acute and chronic pain
but especially menstrual pain
E Pulsing
&
Tapping
Chronic pain, nausea,
travel and morning sickness.
Avoid use on traumatised muscles
F Pulsing
& Tapping Most types of acute and chronic pain
G Varies Acute and chronic pain
H Varies Acute and chronic pain
I Varies Acute and chronic pain
M Depends on settings Acute and chronic pain
8.6.3 Manual operation
8.6.3.1 Setting Manual Parameters
• Press the program key and select PROGRAM m
• Press the Menu key during 3 seconds and the Hz display will start to flash.
• Use Menu +/- keys to adjust to the desired setting.
• Press the Menu key to confirm the change and go to the next parameter.
• After setting Timer, no parameters flash and settings are saved. If you only wish to change one
parameter, you can confirm the settings and escape from the Menu by increasing Intensity above
zero. If no key is touched for 6 seconds the settings will be saved and the unit exits Menu.
8.6.3.2 Setting Treatment Time
• The Preset Programs are all set with continuous treatment time.
• To alter this default setting;
• Press Menu key, C min symbol will flash.
• Use Menu -/+ Keys to adjust to new desired setting.
• Set to C (Continuous) if no Timer function is required.
• Press Menu key to confirm setting and exit.
8.7 Doctor Locking
The TensMed 911 has two levels of Doctor Locking:
8.7.1 Program Locking
The TensMed 911 may be set so that patient access is restricted to one program, allowing change of
Intensity and Timer only.

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Any manual settings in Programs A, B, C, D, E, F, G, H, I or M will be retained if doctor lock is set. You
may therefore prescribe and lock any TENS setting.
To lock the unit, press the same two keys together and hold for 4 seconds until key symbol appears in the
lower left corner of the display.
To unlock the unit, press the MENU and CH1 INTENSITY DOWN keys together and hold for 4 seconds
until the key symbol disappears from the lower left corner of the display.
When the unit is locked, all values will be saved even if the batteries are removed.
When unlocked, removing the batteries will return all values except Usage Time to default settings.
8.7.2 Manual Program Locking
The TensMed 911 may also be set to give the patient two customised programs to access according to
your instructions. Once parameters for manual programs G & H have been set, they can be protected
from further change by pressing MENU and CH2 INTENSITY DOWN keys together and holding for 4
seconds. If you attempt to change any of these parameters LOC will appear in the Hz display. Repeat to
release locking.
8.8 User Maintenance
8.8.1 Cleaning of apparatus
To clean the unit, turn it off. Clean the unit with a damp cloth. Do not use abrasive cleaners. A small
amount of mild household detergent may be used, if desired.
8.8.2 Patient cable
Check the cable regularly for damages and/or bad electrical contact. We advise to keep a spare patient
cable in stock.
8.8.3 Care of electrodes
The electrodes supplied with the TensMed 911 units are self-adhesive and can be used several times.
Skin must be allowed to breath therefore the electrodes should be removed periodically. When not in use
the electrodes should be placed back onto the clear plastic shield.
The condition of the electrodes does affect conductivity and, consequently, the performance of the unit.
When the electrodes initially lose their adhesive quality it is possible to reactivate the adhesiveness by
applying a fine spray of water. When used on clean skin and stored correctly, electrodes will last for
about 14 days.
8.9 End of life
The TensMed 911 contains materials that can be recycled and/or are noxious to the environment.
Specialized companies can dismantle the unit and sort out these materials. When you dispose of the unit,
first inform yourself about the local regulations concerning waste management.

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9 Stimulator Output Parameters
Wave form Biphasic asymmetrical TENS
Pulse Width 50, 100, 150, 200 and 250 µs
Pulse frequency 1, 2, 3, 4, 5, 10, 12, 14, 16, 18, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90,
100, 110, 120, 130, 140 and 150 Hz
Frequency modulation Program I, 20Hz to 100 Hz and back in 12 seconds
Program M, 1Hz to 150Hz
Intensity modulation Program G, intensity down to 70% and back over 10 seconds
Pulse Width modulation Program H, pulse width modulation from 250µs to 50µs and back in 12
seconds
Burst 2 Hz (0,25 seconds at 100Hz)
Amplitude 0–90mA
Treatment time 10 – 20 – 30 – 45 – 60 minutes and Constant
10 Illustrations
10.1 Asymmetrical biphasic TENS waveform
t Pulse width
fpPulse frequency
10.2 Asymmetrical biphasic burst TENS
waveform
fBBurst frequency

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11 Technical Specifications
: This equipment complies with all requirements of the
Medical Device Directive (93/42/EEC).
Medical device classification : IIa
Safety tests : according to IEC 60601-1 +A1 +A2 and IEC 60601-2-10
+A1,
Safety class according to IEC 60601-1 : type BF
Dimensions : 144 x 80 x 27,5 mm (h x w x d)
Weight : 180 gram, included batteries
Environmental conditions for transport and storage
Temperature : -10° to +50° C
Relative humidity : 10 to 100 %
Atmospheric pressure : 500 to 1060 hPa
Environmental conditions for normal use
Temperature : 10° to 40° C
Relative humidity : 10 to 90 % non condensing
Atmospheric pressure : 500 to 1060 hPa
Technical modifications reserved