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Model: JXB-311
THE MANUFACTURER RESERVES THE RIGHT TO ALTER THE SPECIFICATIONS OF THE PRODUCT WITHOUT PRIOR NOTIFICATION
Instruction version: V.00 17.12.2021
I. Safety precautions
• Follow the maintenance advice stipulated in this instruction manual.
• This device may be used for professional purposes or for personal home use.
• This device must be used for the purposes described in this instruction manual only.
• This device must be used in an ambient temperature range of between 10°C and 40°C only.
• This device must always be kept in a clean, dry area.
• Do not expose this thermometer to electric shocks.
• Do not expose this thermometer to extreme temperature conditions of 55°C or -20°C.
• Do not use this device in relative humidity higher than 85%.
• The protective glass over the lens is the most fragile part of the thermometer.
• Do not touch the glass of the infrared lens with your fingers.
• Clean the glass with a cotton bud lightly moistened with 95° alcohol.
• Do not expose the thermometer to sunlight or to water.
• Never drop the device.
• Should a problem occur with your device, please contact your retailer.
• Do not attempt to repair this device by yourself.
• Disposal of waste products, residues, etc., and of me equipment and accessories at the end of their expected service life are identified in the instruction for use.
II. Intended use
The device is an infrared thermometer intended to measure forehead temperature of infants and adults without contacting human body. It can be used by consumers in
household environment and doctor in clinic as reference.
III. Introduction
The JXB-311 Non-contact Infrared thermometer has been developed by using the latest infrared technology. This technology allows temporal artery (TA) temperature to
be taken at a distance of about 0cm~3cm away from the forehead. Precise, Instantaneous and without Contact, the JXB-311 is, up to now, the most suitable thermometer
for no risk on temperature measurement. It has been demonstrated that this method of TA temperature measurement is more precise than the tympanic thermometry
and better tolerated than rectal thermometry (1). However, as with other types of thermometer, it is essential to use the JXB-311 properly in order to obtain reliable and
stable results. You are therefore advised to read this instruction manual and the safety precautions carefully before use. (1)Greenes D, Fleisher G. Accuracy of a Noninvasive
Temporal Artery Thermometer for Use in Infants. Arch Pediatr Adolesc Med 2001;155:376.
IV. Precautions before use
The JXB-311 is pre-set at the factory. It is not necessary to calibrate the device when starting it up. In order to obtain reliable and stable results, you are advised each time
there is a significant change in the ambient temperature due to a change in environment, to allow the JXB-311 to acclimatize to this ambient temperature for 15 to 20
minutes before using it. It is important to allow 3~5 seconds interval between two measurements.
V. Operating principle
All objects, solid, liquid or gas, emit energy by radiation. The intensity of this energy depends on the temperature of the object.The JXB-311 infrared thermometer is
therefore able to measure the temperature of a person by the energy the person emits. This measurement can be taken thanks to anexternal temperature probe on the
device which permanently analyses and registers the ambient temperature. Therefore, as soon as the operator holds the thermometer near the body and activates the
radiation sensor, the measurement is taken instantly by detection of the infrared heat generated by the arterial blood flow. Body heat can therefore be measured without
any interference from the heat of the surrounding environment.
THE DIFFERENT METHODS OF TEMPERATURE MEASUREMENT
Core temperature
Core temperature is the most precise measurement and involves measuring the temperature in the pulmonary artery by means of a catheter equipped with a thermal
probe which can read the temperature in situation. The same method is employed for probes measuring the oesophageal temperature. However, such invasive
temperature measurement methods require specific equipment and expertise.
Rectal thermometry
Rectal temperature adjusts slowly in comparison to the evolution of the body’s internal temperature. It has been demonstrated that rectal temperature remains raised
long after the internal temperature of the patient has started to drop and vice versa. Furthermore, rectal perforations have been known to occur as a result of this method
and without appropriate sterilisation techniques, rectal thermometry can spread germs often found in faeces.
EN
Non-contact infrared thermometer
