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Senex DG1300-QS Submersible Pressure Transmitter
DG1300-QS
The Senex DG1300-QS Submersible Pressure Transmitter is an industrial-grade liquid level measurement sensor engineered for exceptional reliability, long-term stability, and precision performance across demanding fluid handling environments. Featuring an advanced fully welded stainless steel structure, high-precision piezoresistive sensing cell, temperature compensation, and standard 4-20mA process signal output, this submersible pressure sensor delivers robust IP68 waterproof performance, robust anti-interference circuitry, and exceptional moisture ingress protection ideal for continuous submersion in water reservoirs, wastewater systems, river hydrology, and industrial process tanks.
Engineered to meet modern industrial monitoring demands, the Senex DG1300-QS Submersible Pressure Transmitter combines state-of-the-art silicon piezoresistive sensor core technologies with rugged mechanical craftsmanship. Designed for continuous immersion in liquids, the unit utilizes a durable 304/316L stainless steel isolated diaphragm, a hermetically sealed housing, and an integrated vent-tubed waterproof cable to ensure accurate atmospheric reference pressure tracking without moisture intrusion. Internal signal conditioning provides high sensitivity, excellent linear stability, low thermal drift, and robust protection against lightning strikes and radio frequency interference. By directly measuring hydrostatic pressure proportional to liquid head depth, the DG1300-QS offers direct, maintenance-free continuous level measurement for clean water, municipal sewage, deep well hydrology, and non-corrosive chemical solutions across ambient process temperatures ranging from -30°C to +85°C.
FAQ
Q: How does the Senex DG1300-QS measure liquid levels?
A: The sensor operates on the hydrostatic pressure principle. The pressure experienced at the submerged sensing head is directly proportional to the height of the liquid column above it. The internal piezoresistive sensor converts this hydrostatic force into a highly accurate standard 4-20mA electrical signal.
Q: What is the purpose of the vented cable included with the transmitter?
A: The vented cable contains a tiny internal air tube that connects the internal reference side of the pressure sensor cell directly to the ambient atmosphere. This equalizes atmospheric pressure changes, ensuring precise hydrostatic level measurement regardless of barometric pressure fluctuations.
Q: Can the DG1300-QS transmitter be used in viscous or dirty wastewater?
A: Yes, the DG1300-QS is suitable for general water and sewage liquids. For heavy sludge, highly viscous media, or crystallizing liquids, flush-diaphragm or specialized level sensor configurations from the Senex family are recommended.
Q: What installation precautions should be taken in fast-flowing water or turbulent tanks?
A: In turbulent or fast-flowing water (such as rivers or stirred process tanks), it is recommended to secure the transmitter inside a protective steel or PVC pipe to prevent lateral sensor movement and dynamic flow impact pressure on the diaphragm.
Spécifications techniques
| Measuring range | 5kPa~6MPa |
|---|---|
| Accuracy | 1%F.S., 0.5%F.S., 0.25%F.S., 0.1%F.S. |
| Output signal | 4-20mA (24V), 0-5V (24V), 1-5V (24V), 0.5-4.5V (5V) |
| Process connection | M12X1.5 external thread, M20X1.5 external thread |
| Electrical connection | Submersible spool + cable exit |
| Overload pressure | 2 times the measuring range |
| Operating temperature | -20~85℃ |
| Storage temperature | -40~90℃ |
| Service life | Greater than 10 million pressure cycles |
| Protection rating | IP68 |
| Product certifications | SIL certification, explosion-proof voluntary CQC certification, ISO system certification, CE certification |
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