GeoPrecision ML5WR10 Wireless Datalogger Family User Manual log hc2

GeoPrecision GmbH Wireless Datalogger Family log hc2

Contents

Manual__log_hc2_v2

LOG-HC2 Wireless Temperature/Humidity Data Logger forRotronic AG Hydroclip HC2HandlingThe logger consists of the electronics (housing model dependent: Stainless Steel or Plastic,20x160 mm) and the HydroClip2 HC2 sensor (very high precision sensor, integrated orseparate cable) from Rotronic AG. The sensor head can be replaced, different variants areavailable. Please note: The HC2 sensor is not included, becausedifferent versions exist.Important: The sensor is protected against dust andcan withstand condensed water, but should not beexposed to liquid water.If the enclosure must be opened (e.g. for batteryreplacement), please check the o-ring (sealing) very carefully! Use lubricant (to protect theo-ring) before reassembling.We recommend to lubricate the enclosure additionally after reassembling and before using inthe field (e.g. by Spray Vaseline). Please ensure, that no force affects the connectorsensor<->logger in the field. About the range: Optimal range (line of sight in open environment) could be up to 300 metersfor loggers with separate antennas. If the sensor cable (if applicable) is used as antenna, arange of 100 meters is realistic, for plastic housings with internal antenna, 30 meters arerealistic. In the 2nd case the first 20 cm of the sensor cable are mostly important for thetransmission. On request, special beam antennas with very high gain are available from us.Please note: The devices are available with several different radio frequencies, depending onthe local regulations of the country (e.g.: 433 MHz in Europe, parts of Africa and Asia, 905MHz in USA and Canada, ...). It is in the responsibility of the user, not to use devices that arenot allowed in the country of usage.Technical Shortform LOG-HC2 Wireless Temperature/Humidity Data Logger 15.07.2013Don't exposethe sensor toliquid water.
Technical DataLogger: Temperature range: -40°C to +85°C. Radio transmission frequency: a) EC,parts of Africa and Asia): 433.92 MHz (harmonised frequency for license freeoperation within the EC, Switzerland, Norway, Iceland. (for other countriesplease check the local regulations. b) USA/Canada: 905 MHz. Effectiveemitted energy < 5mWMemory: 512-2048kB (non volatile) Flash memory. Up to 100.000-400.000 measures: 1measure typically uses 5.5 Bytes per value (Software Version 1.1, will bereduced to 2-3 Bytes in a following revision). Each HK-record (time stampand optional HK-data) typically requires another 6 to 9 bytes. Since HK-valuesare recorded only after a selectable number of measures, (factory default is 6). Example: 24 measures, 2 values per day require 24*5.5*2 = 264 Bytes.Additionally 4 HK-records require additional 4 * 6..9 = 36 Bytes. Sum: ca.300 Bytes per day. Conclusion: 2048kB will be good for (theoretically) ca. 20years without clearing the memory. The memory has a duty cycle of >100 000clearing cycles.HK-data: Internally the battery voltage and internal temperature can be recorded. Theinternal temperature is only calibrated on demand. Calibrated accuracy is +/-1°C in the range -20°C to +40°C. The battery voltage is measured with aresolution of 1 mV. Sensor: Any type of HygroClip2 (replaceable and calibrated) from ROTRONIC AG(www.rotronic.de). The sensor range is 0-100% rH and -50°C to +100°C. Forthe accuracies and extended temperature ranges contact ROTRONIC (pleasenote: the logger itself is only designed for temperatures from -40°C to +60°C(+85°C for short times)). Optionally the sensor can be connected in 4-wiretechnology. Sensor cables are possible from 20 cm to 1 meter. Battery: SB-AA11 from www.vitzrocell.com :3.6 Volt Lithium (Li-SoCl2), 2400mAh. Max. Pulse load: <20 mASize: AA with solder terminalLow self discharge rate (less than 1% after 1 year of storage at +20°C)Non flammableNon restricted for transportThe battery can be replaced by the user. Similar types of battery are availablefrom all major battery production companies. About the battery voltage: The voltage is around 3.4-3.6 V at 20°C, but „dropsdown“ to 3.1-3.3°C at -40°C. The battery voltage does not significantlyreflect the remaining power of the battery, the „temperature drops“ show thisbetter, as described below.Technical Shortform LOG-HC2 Wireless Temperature/Humidity Data Logger 15.07.2013
Calculation the battery capacity4 main factors impact the battery capacity/lifetime: Constant load: about 10µA for the current version Mode „Sleeping“ with periodically checking the radio. So 1 mAh is good for ca. 100 hours of „Sleeping“ Pulse load: about 10mA for 1.7 seconds per measure, so 1 mAh is good for ca. 210 measures Self discharge: about 10% after 10 years Temperature cycles: difficult to predict, could be up to 50% (worst case) for harsh environments like high mountain sites.As a rough estimation: Theoretically 2400 mAh are good for >25 years of „Sleeping“ or >500000 measures (this is almost 60 years for 1 measure per hour), if no self discharge isassumed. Practically we normally calculate only with 1/3 of the capacity (the rest is forspare): For 1 measure per hour each year requires in total 130 mAh (42 mAh for themeasures and 88mAh for „Sleeping“), with the rest of 2400 mAh / 3 = 800 mAh still morethan 6 years of operation should be possible. Hence we would recommend to replace thebattery with these settings after 5 years or later, if „temperature drops“ for cold phases risessignificantly.Compliance informations (only for USA/Canada):a) User Information according to FCC 15.21:Changes or modifications not expressly approved by the party responsible for compliance could void the user’sauthority to operate the equipment. b) Part 15 Statement according FCC 15.19/RSS Gen Issue 3 Sect. 7.1.3This device complies with Part 15 of the FCC Rules and with Industry Canada license-exempt RSS standard(s).Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2)this device must accept any interference received, including interference that may cause undesired operation.Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts delicence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire debrouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si lebrouillage est susceptible d'en compromettre le fonctionnement.LOG-HC2: FCC-ID: 2AAREHC2R10 / IC Certification No IC: 11303A-HC2R10(Label assembled over battery screw cap)Technical Shortform LOG-HC2 Wireless Temperature/Humidity Data Logger 15.07.2013Model: LOG-HC2 FCC-ID: 2AAREHC2R10IC: 11303A-HC2R101cm2.54cm. Model: LOG-HC2 FCC-ID: 2AAREML5WR10 IC: 11303A-ML5WR10FCC-ID: 2AAREML5WR10 / IC Certification No IC: 11303A-ML5WR10

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