| Abstract: | The use of a flow-activated automatic sampler at a remote research site required personnel to periodically visit the site to collect samples and reset the automatic sampler. To reduce site visits, a cellular telephone was modified for activation by a datalogger. The purpose of this study was to demonstrate the use and benefit of the modified telephone. Both the power switch and the speed-dial button on the telephone were bypassed and wired to a relay driver. The datalogger was programmed to compare values of a monitored environmental parameter with a target value. When the target value was reached or exceeded, the datalogger pulsed a relay driver, activating power to the telephone. A separate relay activated the speed dial, dialing the number of a tone-only pager. The use of this system has saved time and reduced travel costs by reducing the number of trips to the site, without the loss of any data.The use of a flow-activated automatic sampler at a remote research site required personnel to periodically visit the site to collect samples and reset the automatic sampler. To reduce site visits, a cellular telephone was modified for activation by a datalogger. The purpose of this study was to demonstrate the use and benefit of the modified telephone. Both the power switch and the speed-dial button on the telephone were bypassed and wired to a relay driver. The datalogger was programmed to compare values of a monitored environmental parameter with a target value. When the target value was reached or exceeded, the datalogger pulsed a relay driver, activating power to the telephone. A separate relay activated the speed dial, dialing the number of a tone-only pager. The use of this system has saved time and reduced travel costs by reducing the number of trips to the site, without the loss of any data. |
| Genre: | Article |
| ProdID: | 70020429 |
| Citation Author: | Sargent, S. L.; Dey, W. S.; Keefer, D. A. |
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| Citation End Page: | 601 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Soil Science Society of America Journal |
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| Citation Number Of Pages: | 2 |
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| Citation Publisher: | Soil Science Soc of America |
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| Citation Search Results Text: | Inexpensive automated paging system for use at remote research sites; 1998; Article; Journal; Soil Science Society of America Journal; Sargent, S. L.; Dey, W. S.; Keefer, D. A. |
| Citation Start Page: | 600 |
| Citation Volume: | 62 |
| Citation Year: | 1998 |
| Type: | citation/reference |
| Text: | Inexpensive automated paging system for use at remote research sites; 1998; Article; Journal; Soil Science Society of America Journal; Sargent, S. L.; Dey, W. S.; Keefer, D. A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Thu, 1 Jan 1998 00:00 -0600 |
| Publisher: | Soil Science Soc of America |
