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Transmitter
High-Performance Level Transmitters for Wastewater and Industrial Automation
Instrava Curated Instruments represents the pinnacle of selection in the world of process monitoring. We believe that in critical infrastructure like dams, irrigation, and sewage systems, a “good enough” sensor is a liability. Through our Curated approach, we have hand-selected this level transmitter solution, featuring a premium U.S.A. imported GE piezoresistive sensing element. By choosing Instrava, you are investing in a vetted technology designed to deliver accuracy where others fail, backed by our commitment to “Optimized Solutions” that ensure every device is perfectly configured for your real-world industrial challenges.
Transmitters & Sensors Description
Advanced Corrosion Resistance for Sewage & Waste Water
316L Stainless Steel & PTFE Shielding for Harsh Media. Designed specifically as a submersible level transmitter for sewage, this instrument features a hermetically sealed 316SS body construction. To combat the aggressive chemicals found in biogas production and wastewater treatment, we offer an optional PTFE coating. The design includes a removable nose cone that protects the sensitive 316L stainless steel diaphragm from solids and debris, ensuring this anti-corrosion level transmitter maintains its integrity during long-term immersion in industrial waste channels.
Precision Sensing with the Imported GE Core
0.5% FS Accuracy & 20-Pore High-Sensitivity Filter. At the heart of our level transmitters is a high-performance GE sensing element providing a standard 0.5% FS accuracy. To ensure consistent readings in turbulent or silty environments like retention ponds, the sensor utilizes a unique filter with 20 pores. This design maximizes sensitivity while preventing clogging. Combined with a shielded and vented cable that automatically compensates for atmospheric pressure changes via a maintenance-free filter, our hydrostatic level control remains precise regardless of external weather conditions.
Unmatched Protection against Environmental Extremes
Lifetime Lightning Protection & Heavy-Duty Tensile Strength. For outdoor applications like dams and canal monitoring, electrical surges are a constant threat. This instrument incorporates Dual Arrestor technology for Lifetime Lightning Protection, along with robust EMI/RFI shielding. The structural integrity is further reinforced by a 270-pound tensile strength cable, ensuring that the submersible pressure transducer can be safely deployed and retrieved in deep lift stations or pumping stations without the risk of cable snap or signal loss.
Explosion Proof Safety & Versatile Industrial Scaling
Ex d IIC T6 Certification & Custom 200m Measuring Range. Safety in hazardous zones is guaranteed by our Ex d IIC T6 explosion-proof rating, making these level transmitters suitable for explosive biogas environments. We provide unmatched flexibility with customizable measuring ranges from 1m to 200m and a variety of cable materials (PU, PE, or FEP). Whether you are managing agricultural irrigation equipment or high-pressure pumping stations, our optimized solution provides the IP68-rated, fully submersible performance required for modern automated infrastructure.
Transmitters & Sensors Parameter
| Pressure Range | 0-0.1 Bar….20 Bar/0-1m…200m H2O Optional (See P1 page description) *80m max for SDI-12 signal |
| Overload | 150%F.S. |
| Burst Pressure | 500%F.S. |
| Accuracy (Linearity Hysteresis Including non-lin. rep.and hys.Repeatability) | ≤±0.5%F.S(Typical);≤±0.25%F.S(by customized)@25 degree C |
| Long-term Stability | ≤±0.1%F.S.of span/year |
| Working Temp. | -40-80℃(non-corrosive medium) |
| Storage Temp. | -40℃~80℃(Nitrile rubber sealing ring);-20℃~80℃(fluororubber rubber sealing ring) |
| Temperature Compensation | 0℃~80℃ |
| Medium compatible | Compatible with 316L Stainless Steel |
| Electrical Wire | 2 Wires 3 Wires 4 wires |
| Output | 4-20mA 1-5V;0-5V 0-10V 0.5-4.5Vnon-ratiometric SDI-12 RS485 Modbus RTU |
| Power Supply | 7-30Vdc 8-30Vdc 13-30Vdc 5Vdc±5% 12Vdc 3.5-36Vdc |
| Polarity protection | Yes Power wires-Yes;Signal Wires-Yes,Power&Signal Wires-No! |
| Insulate resistance | >100M Ω@50V |
| FS Temp.Drift | 0.02%FS/℃(≤100kPa);0.01%FS/℃(>100kPa) |
| Zero Temp.Drift | 0.2%FS/℃(≤100kPa);0.1%FS/℃(>100kPa) |
| Electrical connection | Fixed cable with vented tube and water proof IP68 |
| Response time | ≤10 ms |
| Pressure Type | Gauge pressure;Sealed gauge and absolute optional |
| Certificate | TUV RoHS and CE Certificate |
| EMC Standard | EN61326-1:2013;EN 61326-2-3:2013 EN61000-6-2:2005;EN61000-6-4:2007+A1 |
| Lightning Protection (optional functions) | Air conduction more than 8000V;external sensor more than 4000 Voltage protection. |
| Cable optional | Cable materials are optional according request,we offer 3 type special cable as follow: PE Cable(Water Proof);PU Cable(Oil/Fuel Proof);FEP Cable(Anti-Corrosive) |
Instrava OEM/ODM
Reliable Instruments. Solutions That Fit Your Application.
Instrava is focused on delivering reliable industrial solutions through carefully curated products, application-driven optimization, and flexible customization. We select proven instruments from trusted manufacturers to ensure consistent quality, optimize solutions based on real working conditions to solve practical challenges, and provide tailored configurations to meet specific application needs.
By combining selection expertise with application understanding, Instrava helps customers reduce risk, improve efficiency, and achieve dependable results in complex industrial environments.
What is the best level transmitter for wastewater and sewage measurement?
A submersible level transmitter with a 316L stainless steel diaphragm and a removable nose cone is ideal for wastewater. The nose cone protects the sensor from physical damage by debris, while the 316SS housing resists corrosion. For aggressive sewage, adding a PTFE coating ensures the longest possible service life.
How does lightning protection work in submersible level transmitters?
Quality level transmitters use Dual Arrestor technology to shunt high-voltage surges away from the sensitive GE sensing element. This Lifetime Lightning Protection is essential for sensors installed in open areas like dams, reservoirs, and retention ponds, where equipment is highly vulnerable to atmospheric electrical strikes.
Why is a vented cable necessary for hydrostatic level measurement?
To ensure accuracy, the sensor must compare the liquid pressure against the atmospheric pressure. A vented cable contains a small tube that allows the sensor to “breathe.” Our cables include a maintenance-free filter at the vent to prevent moisture or dust from entering the tube, which would otherwise cause measurement errors or sensor failure.
Can these level transmitters be used in explosive biogas environments?
Yes, our instruments are certified with an Ex d IIC T6 explosion-proof rating. This makes them safe for use in hazardous areas where flammable gases, such as methane in biogas production or wastewater lift stations, are present, ensuring compliance with global industrial safety standards.
What makes a GE-core level transmitter superior to standard sensors?
The USA imported GE piezoresistive core offers superior temperature compensation and long-term stability. Combined with a 0.5% FS accuracy and a 20-pore filter design, it provides higher sensitivity and more reliable data than generic sensors, particularly in applications requiring high-precision liquid level monitoring.
What is the maximum depth for a submersible level transmitter?
While standard sensors are often limited, Instrava’s submersible level transmitters are customizable for ranges up to 200 meters. Combined with a 270-pound tensile strength cable, these units are robust enough for deep well monitoring, dams, and large-scale industrial water storage.
Why Choose Instrava
Built on Consistency, Not Claims
Focused on Industrial Applications
We specialize in industrial analysis and detection, with a clear understanding of real-world operating environments and requirements.
Strict Product Selection Criteria
Every instrument is evaluated based on performance, stability, and application suitability—not just specifications or pricing.
Reliable Supply & Quality Consistency
We work with trusted manufacturers to ensure stable supply, consistent quality, and dependable delivery.
Practical, Experience-Based Support
Our recommendations are grounded in application understanding, helping customers avoid common issues and achieve reliable results.
Instrava is built to reduce uncertainty—so every decision you make is clearer, safer, and more reliable.
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