Table of Contents Introduction Intended use Safety instructions Representation of hazards, cautions and notes Personnel Responsibility and guarantee Service life Symbol explanation Start-up Power supply Mechanical connectors 5.2.1 Flow channel 5.2.2 Oxygen sensor (option) 5.2.3 Installing the oxygen sensor Electrical interfaces Change CITREX battery Operation Switching the device on/off...
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Configuration tool PC minimum requirements Web server 9.2.1 Default 9.2.2 Configured 9.2.3 DHCP 9.2.4 Enable oxygen option 10 Servicing and care 10.1 Preventive cleaning and servicing operations 10.1.1 During operation 10.1.2 Every 4 weeks 10.1.3 Every 12 months 11 Accessories and spare parts 11.1 Accessories table 12 Disposal...
With the oxygen option it is possible to measure oxygen concentrations. The descriptions and instructions in this manual refer to the product CITREX H3. In this User Manual the unit "sL/min" is based on ambient conditions of 0°C and 1013.25 mbar in accordance with DIN 1343.
CITREX H3 is intended for use in a laboratory environment. It may only be used out- side the nursing sector. It must not be used directly on patients or devices that are connected to patients.
Safety instructions Safety instructions Please read all the safety instructions carefully before you use CITREX H3. Representation of haz- This User Manual uses the representation below to specifically draw attention to ards, cautions and notes residual risks during intended use and emphasise important technical requirements.
Symbol explanation Symbol explanation The symbols listed below may appear on the packaging material, on the device rating plate and in the User Manual of the CITREX H3 measuring instrument. USB interface SN BBXXXX Serial number Ethernet interface On/Off button SD card Fragile contents Keep dry...
You will find this information on the rating plate on the back of the power supply unit. When operating CITREX H3 via the USB port only use the original power supply unit included! The device indicates visually and audibly when the battery has to be charged.
Oxygen sensor holder Figure 3: Oxygen sensor holder Measuring range 0 – 100% Accuracy ± 1% O (absolute) 5.2.3 Installing the oxygen sensor 1. Remove the protective cap from the sensor port of the device. Figure 4: Protective cap IMT Analytics AG...
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3. Connect the cable included to the oxygen sensor by pushing the cable into the hole at the top of the sensor until the cable locks into place. Connect the other end of the cable to CITREX H3 by inserting it into the hole provided, which is labelled "O ".
Electrical interfaces Figure 7 shows the available electrical interfaces of CITREX H3. Figure 7: Electrical interfaces MicroSD The firmware of CITREX H3 is stored on the microSD card. card slot It also contains customised configurations. interface The optional oxygen sensor is connected to CITREX H3 via the O interface.
Then the battery can be removed and re- placed. Check whether the new battery has been inserted properly. For this purpose the terminals must be opposite one another. Figure 8: Change battery IMT Analytics AG...
The device is switched on and off at the On/Off button. Figure 8, section "User con- trols", shows where this button is located on the device. To switch CITREX H3 on you must press the On/Off button briefly. You will hear an audible signal. To switch the device off you must press the On/Off button for about 1 second.
Change, Edit Context button; long press: key lock on/off On/Off button Menu button; zero point adjustment Charge indicator Flow direction indicator Screen Display readings and scroll forward Malfunction indicator Display readings and scroll back Table 4: User controls IMT Analytics AG...
The setting does not have to be confirmed and it is enabled as soon as it is visible on the screen. More information about the settings is available in the section "Web server". Figure 12: Ethernet interface IMT Analytics AG...
With the button you can switch between the various gas standards. As soon as a gas standard is displayed, it is enabled. There is a list of available gas standards in the Appendix in the section "Gas standards for flow and volume read- ings". Figure 14: Gas standard IMT Analytics AG...
Oxygen calibration is only available if the oxygen option has been enabled. The pro- cess of oxygen calibration is described in the section "Calibration". With the button you can choose between one-point calibration and two-point calibration. Press the button to start calibration. Figure 17: O calibration IMT Analytics AG...
The following filters are available: • No filter (indication of the last value measured without any threshold) • Low (mean above 240 ms) • Medium (mean above 480 ms) • High (mean above 960 ms) IMT Analytics AG...
icon or the icon. The ∆ icon allows you to jump to the next element. If the context button or the × button is pressed once, you exit "Edit Mode" IMT Analytics AG...
100% oxygen. This so-called two-point calibration adjusts the oxygen sensor more accurately and takes about four minutes. Calibration can be selected by pressing the button more than once. IMT Analytics AG...
). Press the button until the screen shows "O and Air" in green letters. To start calibration, press the button. Calibration for air and oxygen takes 120 seconds for each one. Figure 21: Screen displays "Calibration Oxygen and Air" IMT Analytics AG...
Connecting the device Connecting the device The measurement setup for CITREX H3 has an impact on flow measurement. To obtain results that are as accurate as possible, comply with the instructions in this section. It is important to ensure that the tubing in the measurement setup does not have any radii, kinks or dents.
Measurement setup for CITREX H3 is ideal for checking ventilators. The best measurement results are checking ventilators achieved with the measurement setup shown below. Make sure the test lung is con- nected to the grey aluminium connection port of CITREX H3.
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Screen resolution 1024 × 768 (1280 × 1024 recommended) Web server The Ethernet port on CITREX H3 enables access to the device via a network. Settings can be made on the device via the web browser using the so-called configuration tool. The oxygen option can also be enabled with the web server. The prerequisite for using the web server is an installed Internet Explorer with Microsoft Silverlight 5.
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9.2.2 Configured This setting option is suitable for connecting CITREX H3 to a network that does not have a DHCP server. Define an IP address and a subnet mask using the configuration tool on CITREX H3. Then the device can be connected up to the network and be accessed using the defined IP address via Internet Explorer.
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To have CITREX H3 calibrated at the manufacturer's, IMT Analytics, visit the website www.imtanalytics.com/easycal The EasyCal service makes it possible for users to have CITREX H3 calibrated and adjusted quickly and easily. The annual servicing procedure is also performed. IMT Analytics AG...
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• without endangering human health. • without using processes or methods that harm the environment, especially water, air, soil, animals and plants. • without causing noise or odour nuisances. • without having a detrimental effect on the surroundings or landscape. IMT Analytics AG...
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EN61010-1:2010 2014/30/EU (EMC) DIRECTIVE 2014/30/EU OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility tested according to EN61326-1:2013 IMT Analytics AG...
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(e.g. PIF @ 60 L/min). If the temperature of the gas on entering CITREX H3 is compared with gas temperature in the measurement channel, it becomes evident that the temperature in the measurement channel is higher. Therefore the temperature of the gas entering the CITREX H3 measurement channel should not be expected to equal the temperature displayed on the...
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Table 11: General information and operating data It is the larger tolerance that applies: * Tolerance in relation to the reading ** Absolute tolerance *** In this User Manual the unit sL/min is based on ambient conditions of 0°C and 1013.25 mbar (DIN1343). IMT Analytics AG...
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Specifications 14.2 Gas type The gas type measured must agree with the setting on CITREX H3. Please select the correct gas type in the settings. The following gas types are available for selection: • Air 100% • Air/O -Man. Air/oxygen mixture according to manual input; the de- fault is 100% O •...
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The resulting information constitutes the basis for ventilation parameter calculation. If the trigger is not set properly or if it is not possible to detect a trigger, the ventilation parameters will be calculated incorrectly or not at all. Figure 26: Trigger IMT Analytics AG...
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As a result, a trigger is only activated if the set trigger level continues to apply after the delay time. If the trigger level is no longer reached after the delay time, no trigger is activated. The delay time can be set. Figure 27: Delay IMT Analytics AG...
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Mean pressure mean O, mmHg, Maximum pressure Peak Inspiratory minute volume L/min, cfm, L/s, Inspiratory/expiratory peak flow Insp Exp. Inspiratory volume mL, L, cf Ventilation rate Rate Breaths/min Inspiratory/expiratory ratio Inspiratory time Table 12: Measurement parameters and units IMT Analytics AG...
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Appendix 15.4 Gas standards for flow and volume readings CITREX H3 converts the flow and volume readings measured in the device to match the conditions of the standard selected. The following gas standards are supported by CITREX H3. Abbrevia- Relative Gas Standard...
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