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Water Level Measurement

3 Reasons to Rent Water Monitoring Equipment from the Manufacturer

Editor’s note: This article originally appeared on the In-Situ blog in May 2015. There are several reasons you might consider renting environmental sampling equipment: maybe it just makes more sense to rent equipment for a project rather than buy it, or perhaps you want to try the product before you make the commitment. Whatever the…

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Temporary Flow Measurement Solution With An Improperly Installed Flume

Recently one of our customers was contracted to perform a temporary flow study at a commercial bakery.  The purpose of the flow study was to quantify the volume of process wastewater being discharged so a pretreatment system could be designed and installed to satisfy the requirements of the local water control district.  Our customer reached…

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New Approach to Collection System Assessment & Management

RedZone Robotics has a new approach to collection system assessment and management.  Using robots equipped with multiple sensors, collection system inspections can combine conventional qualitative CCTV with synchronized laser and sonar dimension information all collected several times faster than conventional CCTV trucks.  This unique full 360° quantitative view of the pipeline can help to pinpoint which lines in…

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The New In-Situ smarTroll RDO Handheld

How about a dedicated dissolved oxygen probe that you can use with your smartphone?  The new smarTROLL RDO Handheld uses In-Situ’s robust optical RDO sensor which is one of the few on the market today with EPA approval for DO, BOD, and CBOD measurement.

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Tough Challenges in Sewer Lift Station Level Measurement

Tough challenges for sewer lift station level measurement are operating in an extremely harsh environment; and reliable performance without frequent maintenance. Pump controls are dependent on accurate level sensing; so the level sensor must be designed to withstand these conditions; without the need for constant maintenance and calibration.

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Tech Tips from In-Situ, Inc.’s Tech Support

Tech Tip #1 RuggedReader Handheld PC acting slow or not responding? Think of it as a small computer that sometimes runs into errors. One way to keep it running better is to reboot it regularly like you do your PC. To do this, hold down the Power button for a few seconds until the Power…

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Teledyne Isco 2150 Flow Meter Found After Hurricane Isaac

For several years the Louisiana Coastal Protection and Restoration Authority has utilized 3 Teledyne Isco 2150 Area Velocity Flow Meters to monitor freshwater flow into Coastal marshes. The Caernarvon Freshwater Diversion Project takes sediment laden freshwater from the Mississippi River and allows it to flow into the marsh providing nutrients and sediment needed to restore…

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Water Quality Monitoring With Remote Data Access

The need for remote data access for water quality monitoring stations is on the rise. Not only is there a significant cost involved in sending personnel into the field but there are also safety concerns in working in, over, and near the water. In addition, staff shortages can result in “stretching” out the time between…

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Monitoring Water Level At Remote Locations

If you need to monitor water level and rainfall at remote locations it can be done for under $2500 with the In-Situ, Inc. TROLL Link 101 and LevelTROLL.  The TROLL Link 101 is a GSM cell modem based system that can transmit data from LevelTROLLs, AquaTROLLs, and TROLL 9500’s to a secure data center hosted…

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Teledyne RDI RiverRay ADCP Performance Upgrade Package

Teledyne RDI is pleased to announce the availability of its new Performance Upgrade Package for the highly popular RiverRay ADCP system. RiverRay revolutionized the measurement of flow and discharge in rivers and streams with its flexible design and adaptive technology.  Now, the RiverRay is taken to the next level with the new Performance Package Upgrade.

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Parshall Flumes – Free vs. Submerged Flow

As often as we use Parshall flumes for open channel flow measurement, it is important to understand “free versus submerged flow” conditions; as it greatly impacts the accuracy of the installation…or the lack thereof. While any primary device could be affected by submerged flow conditions, there isn’t much data to be found on the topic.…

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Aquatic Sensor Workgroup Guidance Documents

The Aquatic Sensor Workgroup is a public-private partnership of water-quality monitoring agencies, industry, and   academia whose mission is to ensure that water-quality data collected by sensors are of known and documented quality.  They have published several guidance documents that benefit anyone using or preparing to use water quality monitoring sensors for surface water or groundwater monitoring applications.

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In-Situ, Inc. Extra Large Desiccant for TROLL Instruments

In-Situ, Inc. released an Extra Large Desiccant for their LevelTROLL 500/700, AquaTROLL 200, and TROLL 9500 instruments.  Properly maintaining the desiccant on a vented pressure transducer is essential to its operation.  A vented pressure transducer must maintain an open pathway to the atmosphere from the backside of the strain gauge in order to cancel out the effects…

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In-Situ, Inc. RDO Sensor Recieves EPA Approval for NPDES Permit Holders for DO, BOD, and CBOD

On May 18, 2012, three In-Situ RDO methods received nationwide U.S. Environmental Protection Agency (EPA) approval for optical dissolved oxygen measurement.  The In-Situ RDO methods are included in the final Methods Update Rule (http://water.epa.gov/scitech/methods/cwa/update_index.cfm).  National Pollution Discharge and Elimination System (NPDES) permit holders may begin monitoring with In-Situ RDO methods.  These optical (luminescent) methods can…

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Comparing Absolute and Gauged Pressure Sensors

This technical note describes the difference between absolute and gauged pressure sensors and explains the proper use of each type of sensor in different applications for In-Situ, Inc. LevelTROLL and AquaTROLL instruments. Figure 1 provides a general illustration of the forces measured by a pressure sensor’s internal strain gauge.

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Logging Rain Gauge

Teledyne Isco offers two options for a logging rain gauge.  The Isco 676 Rain Logging System uses an Isco 674 rain gauge and a 4120 Flow logger (minus the submerged pressure transducer) be to record rain events.  The second option, Isco 677 Rain Logging System, uses the same 674 rain gauge but the more advanced…

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In-Situ, Releases LevelTROLL 700H Meeting USGS OSW Accuracy Specification

In-Situ, Inc. has released the LevelTROLL 700H which meets the United States Geological Survey’s Office of Surface Water Accuracy Specification required for river/stream stage-discharge measurements and/or reservoir monitoring.  The LevelTROLL 700H has an accuracy spec of +/-0.01 foot or 0.2% of the effective stage which is defined as, “the height of the water surface above…

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Real-time Water Tower Pressure Monitoring Via the Web

It is as simple as connecting a sensor to an existing tap at the water tower or on a water line within the distribution system and powering up the modem and you can access your water tank  pressures or distribution system pressures on the Internet.  

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