

3301 Guided Wave Radar Level + Interface
SKU: 3301
Variant of the 3300 GWR specifically tuned for level AND interface measurement on two-phase liquids (oil/water interfaces, settling tanks, separator vessels). Same probe and electronics platform as the 3300; interface-detection firmware identifies both the upper-product level AND the lower-fluid interface in one signal. Reports both as separate 4-20 mA outputs or HART variables. Best in applications where you previously needed two separate level transmitters (or a displacer + a level transmitter).
Contact us for pricing on this product.
Variant of the 3300 GWR specifically tuned for level AND interface measurement on two-phase liquids (oil/water interfaces, settling tanks, separator vessels). Same probe and electronics platform as the 3300; interface-detection firmware identifies both the upper-product level AND the lower-fluid interface in one signal. Reports both as separate 4-20 mA outputs or HART variables. Best in applications where you previously needed two separate level transmitters (or a displacer + a level transmitter).
The Rosemount 3301 Guided Wave Radar Level + Interface # 3301 is manufactured by Rosemount. Valley Instrument Service is an authorized Rosemount dealer offering full sales support, NIST-traceable calibration, and expert technical assistance.
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Contact Us or Call (661) 327-8681Configure Your Rosemount 3301 Guided Wave Radar Level + Interface Transmitter
Guided wave radar level + interface transmitter, sister product to the 3300. Same probe-based GWR principle with dual measurement: liquid-air interface (level) AND liquid-liquid interface (e.g., oil-water separator). Reports both as separate 4-20 mA outputs or HART variables. Shares the Instrumart configurator with 3300; specific 3301 model is configured via the Model fieldset.
Required Specifications
11 of 11 selected- Model:
- 1Guided wave radar level transmitter
- Signal Output:
- H4-20 mA with HART communication
- Housing Material:
- APolyurethane-covered aluminum
- Conduit / Cable Threads:
- 11/2in 14 NPT
- Operating Temperature & Pressure:
- S-15 to 580 psig at 302°F
- Material of Construction (Process Connection / Probe):
- 1316 L SST (EN 1.4404)
- Sealing O-ring Material:
- VViton
- Probe Type:
- 5BFlexible single lead with chuck
- Probe Length Units:
- EEnglish (feet, inches)
- Probe Length (Feet, Meters):
- 1010 meters / 10 feet
- Product Certifications:
- NANo hazardous location certifications
Rosemount is configurator-heavy and quote-only. Valley Instrument verifies option compatibility, lead time, and pricing before confirming your order.
Related Products

3300 Guided Wave Radar Level Transmitter
Standard-grade guided wave radar level transmitter — same probe technology as the 5300 but with a streamlined option matrix and cost-effective pricing for general-process applications. HART 4-20 mA output, single or dual rod / cable probes, all common process connections. The workhorse Rosemount GWR for liquid-storage tanks, bypass chambers, and stilling wells where 5300's premium feature set would be over-spec.

3302 GWR Level + Interface (Long Range)
Long-range variant of the 3301 — extends interface and level measurement to longer probes (up to 50 m / 164 ft cable) for tall vessels and deep wells. Same level + interface firmware as 3301 but with the cable-probe range advantage. Used in deep settler tanks, oil-water separator vessels, and any application where the 3301's standard range falls short.

3308 Wireless Guided Wave Radar Level
WirelessHART-powered GWR level transmitter — same proven probe technology as the 3300 family but with a battery-powered WirelessHART radio in place of the wired 4-20 mA loop. Eliminates cable runs for remote level monitoring on tanks too far from a control room for cost-effective wired installation. 7+ year battery life under typical update rates. Pairs with an Emerson Wireless 1410S Gateway for the WirelessHART network backhaul.

5300 Guided Wave Radar Level Transmitter
Premium guided wave radar level transmitter — contact-style radar that fires a microwave pulse down a single rod, double rod, or coaxial probe to measure level by time-of-flight. Immune to vapor, turbulence, foam, and dielectric variability that defeat non-contact radar. Best for difficult liquids (low-dielectric oils, two-phase interfaces, vaporous chambers), bypass chambers, and stilling-well installations. Single or dual probe options, multiple probe materials (316L, Hastelloy, PTFE-coated), wide cable/rod length range. HART or FOUNDATION Fieldbus output. SIL 2/3 certified.
