Heron 4-20mA Pressure Transmitters
Features
- Accuracy of +/-0.1% full scale
- 4x overpressure rating
- Automatic barometric compensation through vented cable
- Free ground shipping
- Expedited repair and warranty service
- Lifetime technical support
- More
Overview
Heron Instruments 4-20mA pressure transmitter provides highly accurate water level measurement for a wide variety requirements that involve real time pressure readings. The Heron 4-20mA is ideal for use in tanks, wells and boreholes.
Easily Integrateable
The Heron 4-20mA is easily adapted to 3rd party data loggers, telemetry systems, Scada Systems, and digital displays.
Durable and Trusted
The two wire 4-20mA current loop is the most widely used signal transmission for transducers in industrial applications. It offers excellent noise immunity and is available in lengths up to 2000 ft (600m). Wide range of supply voltage (7.5VDC-35VDC) and reverse polarity protected.
*Requires vented cable and external power.
Performance |
|
# of Data Points |
N/A |
Download Speed |
N/A |
Accuracy %FS |
+/- 0.05%FS |
Stability %FS/year |
+/-0.20 |
Performance |
|
Pressure Ranges |
10m/30ft, 30m/100ft, 60m/200ft, 120m/400ft |
Overpressure Rating |
2X |
Operating Temperature |
-20˚C to 80˚C |
Pressure Resolution |
0.001 |
Supply Voltage |
7.5VDC - 35VDC |
Expected Battery Life |
N/A |
Warranty |
3 Years |
Physical Characteristics |
|
Wetted Material |
316 SS & Delrin |
O-Rings |
Rubber Buna |
Transducer |
316 SS Piezoresistive Silicon |
Weight |
170g (.37lbs) |
Length |
14.5cm (5.7") |
Diameter |
22mm (.9") |
Vented Direct Read Cable |
Polyurethane Jacketed |
In The News
Cal Poly, San Luis Obispo Manages Monitoring Efforts in Morro Bay
California Polytechnic State University, San Luis Obispo (Cal Poly, SLO), has been monitoring Morro Bay for decades, and while the monitoring program has changed over the years, the dedication to monitoring the bay has remained the same. 
 
The project started in 2006 as a Packard Foundation-funded initiative to monitor water quality flowing in and out of Morro Bay. The goal at the time was to use the data collected to develop and inform an ecosystem-based management plan in collaboration with the Morro Bay National Estuary Program (MBNEP). 
 
Since the estuary was the focus at the time, researchers were monitoring water flowing into the estuary from Chorro Creek and Los Osos Creek.
Read MoreGreen Water in Green Bay: Using Data Buoys to Monitor the Southern Bay
While the bay of Green Bay has been referred to as the largest freshwater “estuary” in the world, the watershed hosts intensive agriculture and contributes one-third of Lake Michigan’s total phosphorus load. 
 
 The Fox River flows into the bay, carrying excess nutrients largely the result of non-point source runoff from the watershed. With a history of deterioration extending well into the last century, the bay ecosystem suffered significant declines in water quality. 
 
 This, in turn, stimulated major clean-up and ongoing restoration efforts to improve water quality. Tracking these changes is an important aspect of ecosystem management.
Read MoreCross-Border Sewage Contaminated Flows: Monitoring the Tijuana River
The Tijuana River runs across the US-Mexico boundary, flowing into and throughout southern California, carrying with it nutrients and contaminants throughout the estuary. In recent decades, the flows have been heavily polluted with untreated sewage from the City of Tijuana. 
 
The wastewater enters the greater Tijuana River estuary, impacting coastal communities and disrupting the natural environment. In order to better understand these cross-border flows, researchers out of San Diego University sought to monitor the waterway test the capabilities of in-situ sensors to measure the contaminated water. 
 
Natalie Mladenov and Trent Biggs were two of the researchers involved in the project, deploying a real-time monitoring system in May of 2021.
Read More