Level Transmitters
Level transmitters continuously measure the height of liquids or solids in tanks and silos and send a signal to your control system for inventory and process control.
Transmitter Technologies
- Radar – non-contact, unaffected by vapor
- Ultrasonic – economical non-contact
- Submersible hydrostatic – water and wastewater
- Guided wave radar – foam and interface
- Magnetostrictive – high-accuracy inventory
Choosing a Transmitter
Consider media, tank height, temperature, pressure and obstructions. Select output and approvals.
Nisco supplies level transmitters.
Related categories: Level Control | Level Sensors | Level Switches | Float Switches
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$695.33
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$1,605.83
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$598.34
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$1,177.49
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$1,681.30
Subject to factory lead times
$1,455.88
Subject to factory lead times
$695.33
Subject to factory lead times
$1,605.83
Subject to factory lead times
$598.34
Subject to factory lead times
$957.10
Subject to factory lead times
$1,119.26
Subject to factory lead times
$1,529.41
Subject to factory lead times
$1,359.61
Subject to factory lead times
$772.59
Subject to factory lead times
$791.12
Subject to factory lead times
$1,927.09
Subject to factory lead times
$1,174.22
Subject to factory lead times
$1,116.73
Subject to factory lead times
$2,415.15
Subject to factory lead times
$1,053.53
Subject to factory lead times
$3,371.72
Subject to factory lead times
$1,388.45
Subject to factory lead times
$1,827.99
Subject to factory lead times
$1,399.72
Subject to factory lead times
$1,334.42
Subject to factory lead times
$1,946.25
Subject to factory lead times
$1,038.94
Subject to factory lead times
$1,177.49
Subject to factory lead times
$1,681.30
Subject to factory lead times
$1,455.88
Subject to factory lead times
- A level transmitter measures level continuously and outputs a 4-20 mA, HART, or digital signal for the control system. Unlike a switch, you get the actual level at every height, all the time. Used for tank inventory, custody transfer, volume calculations, and feeding level into closed-loop control.
- Guided wave radar (GWR) sends pulses down a probe that's in contact with the liquid. The pulse reflects off the surface and the time-of-flight gives the level. Works on foam, low-dielectric fluids, vapors, and small tanks. Ultrasonic sends a pulse through the air from a sensor mounted above the liquid. Cheap, easy to install, and good for clean, open tanks - but vapor, foam, and turbulence can scatter the signal. GWR is more capable and more expensive; ultrasonic is simpler and cheaper.
- Two-point calibration: enter the level at 4 mA (empty or low reference) and 20 mA (full or high reference). For radar and ultrasonic, set the tank height and the reference distance (sensor to bottom). For DP-based level, do a wet calibration with known head pressure. Smart transmitters let you do most of this from a handheld or laptop without filling the tank. Always verify against a sight glass or manual measurement before going into service.

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About NISCO Inc.
NISCO offers a wide range of pressure gauges & instruments, diaphragm seals, thermometers, valves, and flow control products to the industrial and commercial marketplaces, as well as other resellers like ourselves. We can also provide other value-added services such as gauge repair, NIST traceable calibration, diaphragm seal assembly, and valve automation. NISCO takes pride in providing extensive product knowledge, helpful customer service, and market competitive pricing to help fit whatever need you may have because it is our goal to be regarded by our customers as the best supplier of pressure, temperature, and flow control products.
