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Summary of Contents for Apogee TS-100
- Page 1 OWNER’S MANUAL ASPIRATED RADIATION SHIELD Model TS-100 APOGEE INSTRUMENTS, INC. 721 WEST 1800 NORTH, LOGAN, UTAH 84321, USA TEL: (435) 792‐4700 FAX: (435) 787‐8268 WEB: APOGEEINSTRUMENTS.COM Copyright © 2013 Apogee Instruments, Inc.
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Page 2: Table Of Contents
2 TABLE OF CONTENTS DECLARATION OF CONFORMITY……………………………..……………………. 3 INTRODUCTION…………………………………………………………………………….. 4 SENSOR OPTIONS............... 5 SPECIFICATIONS……………………………………………………………………………. 6 DEPLOYMENT AND INSTALLATION……………………………………………….. 9 OPERATION AND MEASUREMENT……………………………………..…………. 11 MAINTENANCE AND RECALIBRATION………………………………….. 15 TROUBLESHOOTING AND CUSTOMER SUPPORT…………………………… 16 RETURN POLICY AND WARRANTY…………………………………………………. 18 ... -
Page 3: Declaration Of Conformity
(PBB), polybrominated diphenyls (PBDE). Further note that Apogee Instruments does not specifically run any analysis on our raw materials or end products for the presence of these substances, but rely on the information provided to us by our material suppliers. -
Page 4: Introduction
TS-100 ideal for use in remote locations with limited power supply. All Apogee TS-100 shields come with a precision air temperature sensor (model ST-110, thermistor). ST- 110 air temperature sensors are weatherproof, have excellent long-term stability, and are designed for continuous air temperature measurement when housed in the TS-100. -
Page 5: Sensor Options
5 SENSOR OPTIONS TS-100 aspirated radiation shields accommodate multiple air temperature and humidity sensors using sensor port adapters. The following standard options are available: Apogee Instruments model ST-110 (precision thermistor for air temperature, included with shield) Apogee Instruments model ST-300... -
Page 6: Specifications
2 m s , the mean of the Apogee model TS-100 shields has been within 0.03 C of the means of the other two models of shields. R. M. Young At higher wind speeds, the TS-100 and shields read slightly cooler (-0.05 C) than the mean of... - Page 7 7 digit in the IP rating indicates protection against particle entry. A 5 indicates minimal dust entry with no interference with fan operation. The second digit indicates water protection. A 5 indicates that water sprayed on the fan from any direction shall have no harmful effects. Typical fans have particle and water protection ratings of 2 to 3, indicating moderate particle and water protection, but no dust protection.
- Page 8 8 ST-300 (Platinum Resistance Thermometer) Measurement Range: -50 to 70 C Measurement Uncertainty: 0.2 C (from -40 to 60 C) Measurement Repeatability: < 0.01 C Non-stability (Long-term Drift): < 0.05 C per year Equilibration Time: 15 s Operating Environment: -50 to 70 C 0 to 100 % relative humidity Input Voltage Requirement: 2.1 V DC excitation (recommended, see OPERATION AND MEASUREMENT section)
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Page 9: Deployment And Installation
9 DEPLOYMENT AND INSTALLATION TS-100 aspirated radiation shields come partially pre-assembled and have few parts, facilitating easy transport, deployment, and maintenance. Avoid placing the shield near buildings, paved surfaces, or any other locations which may create a micro- environment significantly different than ambient environment. The World Meteorological Organization (WMO) recommends a mounting height of 1.25 to 2 meters above ground. - Page 10 10 The underside of the hat has eight flat surfaces where one or more included cable tie mounts may affix. Using the cable tie mounts is optional, but provides an anchor to zip-tie cables to, providing strain relief and extra shading. ...
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Page 11: Operation And Measurement
11 OPERATION AND MEASUREMENT Connect the sensor to a measurement device (meter, datalogger, controller) capable of inputting 2.5 V DC, and measuring and displaying or recording a millivolt (mV) signal (an input measurement range of 0- 2500 mV is required to cover the entire temperature range of the ST-110 air temperature sensor). In order to maximize measurement resolution and signal-to-noise ratio, the input range of the measurement device should closely match the output range of the sensor. - Page 12 12 An excitation voltage of 2.5 V DC is recommended to minimize self-heating and current drain, while still maintaining adequate measurement sensitivity (mV output from thermistor per C). However, other excitation voltages can be used. Decreasing the excitation voltage will decrease self-heating and current drain, but will also decrease thermistor measurement sensitivity.
- Page 13 13 Measurement of PRT resistance is very similar to measurement of thermistor resistance, where a half- bridge measurement is used. An excitation voltage is input across the bridge resistor and an output voltage is measured across the PRT. An excitation voltage of 2.1 V DC is recommended to minimize current drain, while still maintaining an adequate voltage signal.
- Page 14 14 Fan Operation: Under some environmental conditions (e.g., high wind speed, low solar radiation), accurate measurements can be made without running the fan at full speed. Fan speed and power consumption can be decreased using a pulse width modulation (PWM) signal. The PWM signal should have a frequency of approximately 20 kHz and a duty cycle of 50 to 100 %, where a duty cycle of 100 % is full power and 50 % is low power.
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Page 15: Maintenance And Recalibration
DEPLOYMENT AND INSTALLATION section. Apogee ST-110 and ST-300 temperature sensors are factory calibrated and come with sensor-specific calibration coefficients. Sensors are calibrated for absolute temperature against the mean of two reference PRTs in a constant temperature bath, over a range of approximately -35 to 60 C. -
Page 16: Troubleshooting And Customer Support
TROUBLESHOOTING AND CUSTOMER SUPPORT Independent Verification of Functionality: Apogee ST-110 temperature sensors yield a resistance proportional to temperature. A quick and easy check of sensor functionality can be accomplished with an ohmmeter. Connect the lead wires of the ohmmeter to the black and red wires from the sensor. The resistance should read 10 k (10,000 ohms) at 25 C. - Page 17 1 mega-ohm or higher then there is negligible effect on the sensors, even after adding up to 100 m of cable. TS-100 aspirated radiation shields use shielded, twisted pair cable, which minimizes electromagnetic interference. This is particularly important for long lead lengths in electromagnetically noisy environments.
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Page 18: Return Policy And Warranty
RETURN AND WARRANTY POLICY RETURN POLICY Apogee Instruments will accept returns within 30 days of purchase as long as the product is in new condition (to be determined by Apogee). Returns are subject to a 10 % restocking fee. WARRANTY POLICY... - Page 19 5. Upon receipt, Apogee Instruments will determine the cause of failure. If the product is found to be defective in terms of operation to the published specifications due to a failure of product materials or craftsmanship, Apogee Instruments will repair or replace the items free of charge.
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