9. PREVENTIVE MAINTENANCE AND CALIBRATION ........... 24 10. TECHNICAL SPECIFICATION.................... 24 10.1........................24 ECHNICAL PARAMETERS 10.1.1. Common parameters ............................. 24 10.1.2. H5421 - CO regulator ..........................25 10.1.3. H5424 - CO regulator ..........................25 10.1.4. H6420 - temperature, relative humidity and CO regulator ................. 25 10.1.5.
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Copyright: COMET SYSTEM, Ltd. It is prohibited to copy and edit this instruction manual and make any changes at all without explicit agreement of COMET SYSTEM, Ltd. All rights reserved. COMET SYSTEM, Ltd makes constant development and improvement of all its products. That is why it reserves the right to make any technical changes on the device/product without previous notice.
The regulators are designed to be operated in a chemically non-aggressive environment. Type Temperature Humidity Computed value ✓ H5421 ✓ H5424 ✓ ✓ ✓ ✓ H6420 ✓...
condensation inside the sensor’s cover into water phase. This liquid phase stays inside sensor’s cover and can’t escape from the cover easily. It can dramatically increase response time to relative humidity change. If water condensation occurs for longer time it can cause sensor damage. Similar effect can occur under water aerosol conditions.
5. Description of device function and setting Information from regulator is available directly through LCD or you can read them with one of next communication protocols ( Modbus RTU, Advantech-ADAM ). 5.1. Device setting from the manufacturer communication protocol: Modbus RTU regulator address: communication speed: 9600Bd, no parity, 2 stop bits...
5.3. Carbon dioxide concentration measurement A multiple point CO2 and temperature adjustment procedure leads to excellent CO2 measurement accuracy over the entire temperature working range; this is a must for process control and outdoor applications. The dual wavelength NDIR CO2 sensing procedure compensates automatically for ageing effects.
Far condition 1 FAR0 – „far condition 0“: after device’s power on the relay is open FAR1 – „far condition 1“: after device’s power on the relay is close If “far condition” is assigned to output relay, then there is possible to change the output relay status by Modbus communication protocol only.
5.4.3. Regulator address setting Regulator address for preset communication protocol. RS485 network regulátor address 5.5. Regulator setting change 5.5.1. Setting with PC and TSensor software User’s software TSensor provides setting of all regulator parameters. The program is available free to download at web page www.cometsystem.com. Run the TSensor program and follow the program instructions.
5.5.3. Setting with using of Modbus communication protocol See chapter “Output relay alarm condition configuration with using of Modbus communication protocol” at page 20. 5.6. Extended setting mode During regulator operation it is possible to change parameters available through “Actual regulator preset”...
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Acoustic alarm deactivation activated acoustic alarm is possible to acoustic alarm is still activated for all time and deactivate by pressing „ “ key it is impossible to deactivate it Relay response for error Regulator continuously checks its state during operation. In case error of assigned value measurement is found then output Relay1 (Relay2): stays unchanged (in previous status)
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Regulator address setting Regulator address for preset communication protocol RS485 network regulator address Communication speed Communication speed for preset communication protocol communication speed setting Temperature unit choice It is possible to measure temperature at °C or °F. There is shown preset unit. It is possible to change it after „SET“...
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zone level indication setup Whole measuring range can be divided into three areas. Each active area there is indicated by green, yellow or red LED depends on actual measured value. It is done by two boundary limits setting. „YELL“ limit sets boundary between green and yellow indication. It means that if actual measured value is lower than „YELL“...
don’t show value on LCD show value on LCD Show CO concentration at LCD display This item provides to choice if CO value may be displayed at LCD display or not. It is possible to change it after „ “ key pressing. don’t show value on LCD show value on LCD Computed value selection...
value shown at first LCD line: temperature / CO - by device type relative humidity / dew point temp. – by device type value shown at second LCD line: °C temperature unit: computed value preset: dew point temperature obnova nastavení regulátoru od výrobce 6.
• FAR0 – „Far condition 0“, it means, after power up output relay will be open, or • FAR1 – „Far condition 1“, it means, after power up output relay will be close. Then there is possible to change relay status by Modbus communication protocol command by requested value writing to following addresses: Address Address...
Address Address Function Unit Description Status [hex] [dec] Alarm value 0x0047 preset alarm value (threshold) for Relay1 value Delay for Time in seconds Time in seconds that the [sec] 0x0048 Relay1 condition must be valid to evaluate alarm Hysteresis Value wihch must be set back below / above 0x0049 of Relay1 value...
6.2.1. Jumper Jumper (placed nearby keys) is accessible after demounting of four screws in the corners of the box and removing the lid. If communication protocol compatible with standard Advantech-ADAM is selected, its function is the following: • If jumper during switching ON the power is closed, device always communicates with following parameters regardless stored setting in the device: communication speed 9600 Bd, without check sum, device address 00h •...
7. Error States of the device Device continuously checks its state during operation. In case error is found LCD displays corresponding error code: Error 0 - first line of LCD displays „Err0“. Check sum error of stored setting inside device’s memory.
8. Readings on LCD display °C, °F reading next to this symbol is measured temperature or error state of value %RH reading next to this symbol is measured relative humidity or error state of value CO2 ppm reading next to this symbol is measured concentration of CO or error state of value.
10.1.2. H5421 - CO regulator Concentration of CO ± (100 ppm + 5 % of measuring value) at 25°C (77°F) and 1013 hPa Accuracy: Range: 0 to 10000 ppm / ºC in the range 0 to 50 ºC (32 to 122°F) Temperature dependence: typ.
10.1.5. H6421 - temperature, relative humidity and CO regulator Temperature: ± 0,4 °C (±0,7 °F) Accuracy: -30 to +105 °C (-22 to 221 °F), includes probe cable Range: 0,1 °C (0,2 °F) Resolution: Relative humidity: ± 2,5 %RH from 5 to 95 %RH at 23 °C (73,4 °F) Accuracy: Range: 0 to 100 %RH...
10.1.7. Value computed from measured relative humidity and temperature Dew point temperature -60 to +80 °C (-76 to 176 °F) Range: ±1,5°C (±2,7°F) at ambient temperature T<25°C (77°F) and relative Accuracy: humidity RH >30%, for more details see graphs below Absolute humidity Range: 0 to 400 g/m...
10.2. Operating conditions Operating temperature range: -30 to +80 °C (-22 to 176 °F) electronics H5421, H6421: -30 to +60 °C (-22 to 140 °F) electronics H5424, H6420: -30 to +80 °C (-22 to +176 °F) measuring end of stem H6420: -40 to +60 °C (-40 to +140 °F)
-40 to +60 °C (-40 to 140 °F) temperature: relative humidity: 5 to 95 % RH (no condensation) atmospheric pressure: 700 to 1100 hPa Dimensions:see dimensional drawings Weight: approximately: H5421/1m probe 440 g H5421/2m probe 470 g H5421/4m probe 530 g H5424 340 g...
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Connection of ELO E06D (RS232/RS485) and ELO 214 (USB/RS485) converters The ELO E06D converter is an optional accessory for connection of transmitter with RS485 interface to the PC via serial port RS232. Connect connector marked RS232 directly to the PC, connect power to connector marked RS485. Power voltage +6V DC from an external acdc adapter connect to pin 9, 0V connect to pin 5.
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