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Summary of Contents for Apogee SL-510
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Page 1: Owner's Manual
OWNER’S MANUAL PYRGEOMETER Models SL-510 and SL-610 Rev: 28-Oct-2020 APOGEE INSTRUMENTS, INC. | 721 WEST 1800 NORTH, LOGAN, UTAH 84321, USA TEL: (435) 792-4700 | FAX: (435) 787-8268 | WEB: APOGEEINSTRUMENTS.COM Copyright © 2020 Apogee Instruments, Inc. -
Page 2: Table Of Contents
TABLE OF CONTENTS Owner’s Manual ................................1 Certificate of Compliance ............................3 Introduction ................................4 Sensor Models ............................... 5 Specifications ................................. 6 Deployment and Installation ..........................8 Cable Connectors ..............................9 Operation and Measurement ..........................10 Maintenance and Recalibration .......................... 15 Troubleshooting and Customer Support ...................... -
Page 3: Certificate Of Compliance
RoHS 3 compliant using exemption 6c. 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
Pyrgeometers are also integrated into net radiometers for measurement of net radiation at the land surface. Apogee Instruments SL-510 and SL-610 pyrgeometers consist of a thermopile detector, silicon filter with a diamond-like carbon coating (for weatherproofing), precision thermistor (for detector temperature measurement), heater, and signal processing circuitry mounted in an anodized aluminum housing, and a cable to connect the sensor to a measurement device. -
Page 5: Sensor Models
SENSOR MODELS Apogee SL-510 and SL-610 pyrgeometers covered in this manual are analog versions that provide a voltage output. Apogee offers the SL-510 for atmospheric measurements (upward-looking sensor, measures incoming longwave radiation) and SL-610 for terrestrial surface measurements (downward-looking sensor, measures outgoing longwave radiation). -
Page 6: Specifications
4 years against defects in materials and workmanship Calibration Traceability Apogee SL-510 and SL-610 pyrgeometers are calibrated against the mean of two Apogee model SL-510 or SL-610 transfer standard pyrgeometers inside a custom blackbody cone held at multiple fixed temperatures over a range of radiometer (detector and sensor body) temperatures. -
Page 8: Deployment And Installation
(longwave radiation from atmosphere is diffuse, so perfect level of the sensor is not required). An Apogee Instruments model AL-100 leveling plate is recommended for this purpose. To facilitate mounting on a cross arm, an Apogee Instruments model AM-110 mounting bracket is recommended. -
Page 9: Cable Connectors
(pyranometer pictured) Instructions Pins and Wiring Colors: All Apogee connectors have six pins, but not all pins are used for every sensor. There may also be unused wire colors inside the cable. To simplify datalogger connection, we remove the unused pigtail lead colors at the datalogger end of the cable. -
Page 10: Operation And Measurement
30 cm from the sensor head then use the appropriate wiring configuration below. Wiring for SL-510 Serial Number 1074 and above (or with cable connector) and SL-610 Serial Number 1034 and above (or with cable connector) - Page 11 Sensor Calibration Apogee SL-510 and SL-610 pyrgeometers are calibrated in a temperature controlled chamber that houses a custom-built blackbody cone (target) for the radiation source. During calibration, pyrgeometers (detectors) are held in a fixture at the opening of the blackbody cone, but are thermally insulated from the cone. Detector and target temperature are controlled independently.
- Page 12 Thermistor wiring for SL-510 Serial Number 1074 and above (or with cable connector) and SL-610 Serial Number 1034 and above (or with cable connector)
- Page 13 , and C = 1.26233 x 10 Longwave Radiation Measurement The detector output from SL-510 and SL-610 pyrgeometers follows the fundamental physics of the Stefan- Boltzmann Law, where radiation transfer is proportional to the fourth power of absolute temperature. The mV...
- Page 14 Operation of Heater Apogee SL-510 and SL-610 pyrgeometers have an internal heater to allow for sensor heating during precipitation events or under conditions of dew and frost deposition. The heater is designed to keep the water (liquid and frozen) off the silicon filter and does not need to be powered in order to make measurements of longwave radiation.
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Page 15: Maintenance And Recalibration
Blocking of the optical path between the target and detector, often due to moisture or debris on the silicon filter, is a common cause of inaccurate measurements. SL-510 pyrgeometers have a domed housing for improved self- cleaning from rainfall, but the flat filter surface of SL-510 and SL-610 pyrgeometers can become partially blocked in three ways: 1. -
Page 16: Troubleshooting And Customer Support
10 MΩ or higher, there is negligible effect on the radiometer calibration, even after adding up to 50 m of cable. Apogee SL-510 and SL-610 pyrgeometers use shielded, twisted pair cable, which minimizes electromagnetic interference. This is particularly important for long lead lengths in electromagnetically noisy environments. -
Page 17: Return And Warranty Policy
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 18 84321, USA 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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