NexSens AccuStage
Contents
1. according to the wiring diagram below Avoid clamping on wire insulation Figure 2 Unplug the green terminal strip from the data logger before wiring the sensor COMPUTER INTERFACE S99995 595999995868 S959959959959955868 I I i I I I I I I 1 1 i j A NexSens AccuStage Yellow RS485B Blue RS485A White GND Black 12V Figure 3 Physical wiring of sensor to an iSIC data logger Notes e This Wiring is for iSIC Version 7 Data Logger For older versions please contact NexSens Technology Inc e Drain wire should be cut off Computer Interface iChart software is used to set up the iSIC data logger as well as to acquire and process data Launch the software and select File New Project Follow the Setup Device Wizard to create a project file Additional information is available in the iChart manual Deployment and Maintenance Installation The AccuStage level sensor can easily be installed in a 1 or larger stilling well or deployment pipe or can be deployed beneath NexSens data buoys DEPLOYMENT AND MAINTENANCE Additionally for best level measurements make sure the AccuStage is installed below the lowest anticipated water level during unattended deployments For vented sensors care should be taken to keep the cable jacket from bending tighter than a one inch radius This can pinch the vent tube thus preventing an accurate vented level reading Prevent moist air fr2. NEXSENS ee technology NexSens AccuStage Smart Water Level Sensor User Manual tel 937 426 2703 fax 937 426 1125 info nexsens com NexSens Technology Inc 1415 Research Park Drive Beavercreek OH 45432 nexsens com Table of Contents OverVieW unnneenannnnnnnnnnnnnnnnnnnnnnnnnannnnnnnunnnnn Specifications ssssssssrssrssssrnsnrnnn 2202 Connecting to an iSIC Data Logger Computer Interface 220222220200000 Deployment and Maintenance Installation zes Maintenance au CleaniN g OSERNEPNERIEEORRIULEEEEEEELEUEUE HERR AR EREEREER REETA Storage eoe EEE EEEE EER ET Calibrator zn na Rev 12B18 OVERVIEW Overview The NexSens AccuStage water level sensor is a completely self contained pressure transducer Both water level and temperature readings are available on the RS 485 Modbus output Additionally water level is available on the 0 2 5VDC analog output The AccuStage is available in vented or absolute configurations and is ideally suited for long term environmental monitoring applications in surface water streams and reservoirs This device is also perfect for measuring water level in weirs flumes or irrigation channels to compute flow Additionally it can be used with NexSens iChart software and an iSIC or SDL data logger to measure significant wave height dominant wave period and level for tide gauge systems Figure 1 NexSens AccuStage SPECIFICATIONS Speci
3. fications Table 1 Vented Water Level Specifications Sensor Vented Pressure Transducer 0 to 5 meters standard Measurement Range Custom ranges from 1 to 275 meters Accuracy 0 1 Full Scale TEB Operating Temperature 10 to 80 C Power Requirements 8 to 28 VDC 0 to 2 5 VDC analog Modbus Outputs RS 485 Body Material 316L stainless steel or titanium Hytrel jacketed vented amp shielded 10 20 amp 30 meters standard Custom lengths available Cable Type Cable Length Sensor Length 109mm 4 29 Sensor Diameter 21mm 0 825 CONNECTING TO AN ISIC DATA LOGGER Table 2 Non vented Water Level Specifications Sensor Absolute pressure transducer Measurement Range 1 to 275 meters Accuracy 0 1 Full Scale TEB Operating Temperature 10 to 80 C Compensated Temperature 10 to 80 C Power Requirements 8 to 28 VDC 0 to 2 5 VDC analog Modbus Outputs RS 485 Body Material 316L stainless steel or titanium Cable Type Hytrel jacketed amp shielded 10 20 amp 30 meters standard Sable Length Custom lengths available Sensor Length 109mm 4 29 Sensor Diameter 21mm 0 825 Connecting to an iSIC Data Logger To wire the sensor into the iSIC route the cable and wires through a gland fitting installed in the enclosure and then unplug the green terminal strip from the data logger before securing individual wires
4. om entering the vent tube A NEMA 4X enclosure with desiccant and Gortex vent is recommended Maintenance There is very little maintenance required for AccuStage vented level sensors because they are designed for long term deployments in submersible applications However high fouling environments can cause the nose cap to become clogged resulting in erroneous level readings Cleaning Never attempt to clean the AccuStage nose cap or diaphragm with a sharp object This could dent the sensor diaphragm and cause permanent damage to the transmitter Instead it is recommended that a soap scum cleaner or hard water stain remover be used Follow the procedure below to clean the sensor 1 Fill a container with the cleaning solution 2 Fill a second container with 50 50 diluted cleaner 3 Fill a third container with fresh water 4 Beginning with the first bowl hold the cable about six inches from the sensor housing and stir gently in the solution for 20 30 seconds Repeat stirring in the diluted solution and finally in the water 6 Wipe dry with a soft rag or towel Storage AccuStage vented level sensors should be stored in a cool dry place Calibration To ensure quality data periodic manual quality control QC readings are recommended When the sensor is drifted out of spec it should be sent back for factory calibration
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