Transmitters

Transmitters — New & Used

Transmitters convert process signals from sensors—such as pressure, level, flow, and temperature—into standardized electrical or digital outputs for monitoring and control. Commonly using 4–20 mA, 0–10 V, or fieldbus protocols, they are a core building block of industrial automation, SCADA systems, and plant instrumentation.

At Surplus Select, we stock a rotating inventory of new and used OEM transmitters, including pressure, temperature, level, and multi-variable units. Our surplus pricing gives OEMs, integrators, and maintenance teams a cost-effective way to replace failed transmitters, add measurement points, or upgrade legacy systems without paying full catalog price.

Price Match — We match any authorized distributor on identical in-stock parts, so you can source parts at surplus pricing with distributor-level assurance.

Trade-In Credit — Have quality new surplus items? Trade them in for store credit toward the parts you actually need.

Fast U.S. Shipping — Most orders ship same or next business day from our U.S. warehouse to keep your line running.

Find Your Transmitter Fast (Search-First)

Search your part number (e.g., pressure transmitter 0–300 psi 4–20 mA, temperature transmitter 0–200 °C, level transmitter 4–20 mA).
No PN? Try specs like "4–20 mA pressure transmitter", "head-mount temperature transmitter", or "submersible level transmitter".
Need a specific signal or connection? Add terms such as HART, Modbus, 0–10 V, DIN-rail mount, or sanitary tri-clamp to your search.

Applications & Use Cases

Process & plant instrumentation: Measure pressure, level, flow, and temperature in tanks, piping, and process equipment for closed-loop control.
SCADA & remote monitoring: Use transmitters to feed reliable analog or digital signals back to RTUs and PLCs in water, wastewater, and utility systems.
OEM machinery & skids: Integrate transmitters into packaged systems to provide accurate feedback for pumps, compressors, heat exchangers, and more.
Industrial automation: Combine transmitters with PLCs, drives, and controllers for consistent process performance and alarm management.
MRO & upgrades: Replace failed or obsolete transmitters with surplus OEM units to restore measurement accuracy and extend system life.

Why Buy Transmitters from Surplus Select

New & Used Options: OEM transmitters for pressure, level, flow, and temperature at surplus pricing.
Broad Signal & Protocol Support: 4–20 mA, 0–10 V, HART, and other industrial interfaces to fit modern and legacy systems.
Cost-Effective Reliability: Surplus and lightly used transmitters help reduce instrumentation spend while maintaining performance.
Fast Shipping: Most orders ship same or next business day so you can minimize downtime and keep your process online.