GeoPrecision ML5WR10 Wireless Datalogger Family User Manual log pt1000

GeoPrecision GmbH Wireless Datalogger Family log pt1000

Contents

Manual__log_pt1000_v2

LOG-PT1000(-30) Wireless Temperature Data LoggerHandlingThe logger consists of the electronics (housing: POM plastic, 20x160 mm) and the Sensor(Standards: 0 cm (LOG-PT1000) and 30 cm (LOG-PT1000-30)If the enclosure must be opened (e.g. for battery replacement), please check the o-ring(sealing) very carefully! Use lubricant (to protect the o-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. If required (as additional protection against smut), werecommend to use a small piece of fabric (like cotton) tocover the enclosure before putting under the soil. Do notcover the enclosure with plastic material, because of therisk of accumulating liquid water!About the range: Optimal range (line of sight in openenvironment) could be up to 300 meters for loggers withseparate antennas. If the sensor cable (like here) is used as antenna, a range of 100 meters isrealistic. In this case the first 20 cm of the sensor cable are mostly important for thetransmission. Hence in the picture on the right (a logger under soil) the cable is routed as aloop. Normally depths of 20-30 cm still allow a range of 10-30 meters. On request, specialbeam 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-PT1000(-30) Wireless Temperature Data Logger 15.07.2013SoilFabric (optional)
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: 2048kB (non volatile) Flash memory. Up to 400.000 measures: 1 measuretypically uses 5.5 Bytes (Software Version 1.1, will be reduced to 2-3 Bytes ina following revision). Each HK-record (time stamp and optional HK-data)typically requires another 6 to 9 bytes. Since HK-values are recorded onlyafter a selectable number of measures, (factory default is 6). Example: 24 measures per day require 24*5.5 = 132 Bytes. Additionally 4HK-records require additional 4 * 9 = 36 Bytes. Sum: 168 Bytes. Conclusion:2048kB will be good for abt. 32 years (theroetically) without clearing thememory. The memory has a duty cycle of >100 000 clearing 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: „PT1000 1/3 DIN“: Platinum based temperature sensor, accuracy at 0°C: +/-0.1°C. Internal resolution: 0.01°C. Range: -90°C to +90°C. Typical accuracy <+/- 0.2°C in the range -20°C to +40°C. Long term stability: < +/- 0.02°C /year. The sensor is connected in 4-wire technology. Sensor cable possiblefrom 20 cm to 1 meter, factory default is 20 cm. Cable: PUR (Polyurethane).Sensor cover: POM or optional Stainless Steel. Optional Sensor withConnector: „Hirschmann M8, IP68“. Sensor: Male, Logger: Female.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. A word about the batteryvoltage: The voltage is around 3.4-3.6 V at 20°C, but „drops down“ to3.1-3.3°C at -40°C. The battery voltage does not significantly reflect theremaining power of the battery, the „temperature drops“ show this better.Technical Shortform LOG-PT1000(-30) Wireless Temperature 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 9mA for 0.2 seconds per measure, so 1 mAh is good for ca. 2000 measures Self discharge: about 10% after 10 years Temperature cycles: difficult to predict, could be up to 50% (worst case)As a rough estimation: Theoretically 2400 mAh are good for >25 years of „Sleeping“ or>4000000 measures (this is almost 500 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 5 mAh, with the rest of 2400 mAh / 3 =800 mAh still almost 8 years of operation should be possible. Hence we would recommend toreplace the battery with these settings after 5 years or later, if „temperature drops“ for coldphases rises significantly.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-PT1000: FCC-ID 2AARE0/:5 / IC Certification No IC: 11303A-0/:R10LOG-PT1000-30: FCC-ID 2AARE0/:R10 / IC Certification No IC: 11303A-0/:5(Labels respecitvely assembled over battery screw cap)Technical Shortform LOG-PT1000(-30) Wireless Temperature Data Logger 15.07.2013Model: LOG-PT1000 FCC-ID: 2AARE0/:5IC: 11303A-PT1K0CMR101cm2.54cmModel: LOG-PT1000-30 FCC-ID: 2AAREPT1K30CMR10IC: 11303A-PT1K30CMR101cm2.54cm. Model: LOG-PT1000 FCC-ID: 2AAREML5WR10 IC: 11303A-ML5WR10. Model: LOG-PT1000-30 FCC-ID: 2AAREML5WR10 IC: 11303A-ML5WR10

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