Integral cable vent tube for a fast response and accurate readings
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Lifetime lightning/surge protection guarantee
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Choose from models for wastewater, general-purpose and potable water/down well applications
Keller submersible level transmitters are known for their superior reliability and reasonable cost. They feature rugged construction, a small size and integral signal conditioning—simplifying installation anywhere quality liquid level sensors are needed.
Select models provide dual outputs: the RS-485 connection lets you retrieve both level and temperature data; the analog 4-20 mA is rescalable from 10 to 110% of the basic range using Keller’s Control Center 30 (CCS30) software (free download) and a converter cable (stock # 71767).
Custom Options Available
Custom models are available for all transmitters, and typically ship is less than one week. Options include pressure ranges, cable lengths and wetted materials. Contact USABlueBook Technical Support for more information.
Wetted materials:
316 L stainless steel, Kynar®
Cable:
polyethylene (PE) jacket and EPDM seal
Accuracy:
±0.5% full scale (static)
Power:
11-28 VDC (min. 15 VDC)
Output:
4-20 mA, 2-wire and RS-485 Modbus
Temperature range:
14 to 140°F (compensated)
Dimensions:
1.26"Dia x 4.37"L (3"Dia x 6"L guarded models)
Keller LevelRat Submersible Level Transmitters
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Large 1.2" non-fouling sensing diaphragm
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Great for lift stations, heavy solids-laden liquids and slurries
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Dual outputs: one RS-485 and one rescalable analog 4-20 mA
LevelRat submersible transmitters withstand harsh conditions found in sewage lift station and raw wastewater sites. Rugged stainless steel construction with a unique nonstick diaphragm offers superior durability and abrasion resistance.
Wetted materials:
316 L stainless steel, Kynar®
Cable:
polyethylene (PE) jacket and EPDM seal
Accuracy:
±0.5% full scale (static)
Power:
11-28 VDC (min. 15 VDC)
Output:
4-20 mA, 2-wire and RS-485 Modbus
Temperature range:
14 to 140°F (compensated)
Dimensions:
1.26"Dia x 4.37"L (3"Dia x 6"L guarded models)
LevelRat Submersible Level Transmitters
These 1-1/4" diameter models install via cable suspension.
LevelRat Submersible Level Transmitters with Protective Guard
Factory-installed 3" diameter protective guard prevents solids from contacting the diaphragm while acting as a clearance spacer. The integral 1/2" NPT(M) conduit fitting allows additional installation support.
NSF/ANSI 372 & 61 certified for drinking water use (except where noted)
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Choose from Acculevel models with both digital and analog outputs or analog-only Levelgage models
Take accurate level measurements in a variety of water and wastewater applications with these rugged submersible transmitters. They are ideal for lift station, water tank and borehole site level measurements.
316 L stainless steel or titanium body; polyamide, fluorocarbon
Cable:
polyethylene (PE) jacket and EPDM seal
Accuracy
±0.25% of range
Power:
10-30 VDC
Output:
4-20 mA, 2-wire and RS-485 Modbus
Temperature range:
14 to 140°F (compensated)
Dimensions:
0.63"Dia x 5.33"L
Rating:
NSF/ANSI 372 & 61
Keller Microlevel Submersible Level Transmitters
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Small 0.63" diameter fits tight installations
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NSF/ANSI 372 & 61 certified for drinking water use
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Dual outputs: one RS-485 and one rescalable analog 4-20 mA
Use these transmitters for small bore applications. They provide repeatable, precision depth measurement under hostile conditions. Choose from stainless steel or titanium construction (suitable for aggressive media applications).
Microlevel Submersible Level Transmitters
Wetted materials:
316 L stainless steel or titanium body; polyamide, fluorocarbon
14 to 140°F (flying lead models), -22 to 212°F (DIN models)
Process connection:
1/4" NPT(M)
Electrical connection:
DIN plug (internal screw terminals) or flying lead (integral cable, 10 feet)
Power:
11-28 VDC excitation, 2-wire loop-powered
Dimensions
DIN plug:
0.83"Dia x 4.21"L
Flying leads:
0.83"Dia x 4.53"L
Enclosure:
IP68 (flying lead models), IP65 (DIN models)
Approvals:
NSF/ANSI 372 & 61
Keller Valueline In-Line Transmitters
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Approved for drinking water use
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Lifetime lightning/surge protection guarantee
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Flying lead (integral cable) models rated IP68 for installation in flooded areas
Use these versatile in-line pressure transmitters in general and industrial applications. Their durable 316 stainless steel construction, 1/4" NPT(M) threaded pressure connection, and standard 4-20 mA output are well suited to interface with your plant’s systems. All models feature cable vent tubes for fast, accurate readings.
Flying lead models include a 10-ft integral cable and are submersion-rated for tough applications—even in permanently flooded vaults. DIN connector models feature a removable connector with screw terminations that let you use locally sourced wiring.
Keller Valueline In-Line Pressure Transmitters
Accuracy:
±0.25% of range
Output:
4-20 mA
Sensing element:
piezoresistive
Wetted materials:
316 stainless steel
Operating conditions:
14 to 140°F (flying lead models), -22 to 212°F (DIN models)
Process connection:
1/4" NPT(M)
Electrical connection:
DIN plug (internal screw terminals) or flying lead (integral cable, 10 feet)
Signal line surge protector (stock # 71154) provides additional protection for external wiring. Drying tube (stock # 71087) is recommended for use at the vent tube termination of flying lead models.
