Starting at $897.00

Not in stock. Usually ships in 3-4 weeks [?]

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  • Ranges from -1 to 1000 bar
  • Dual LCD display
  • ±0.05% FS standard accuracy (Optional .025% and .01%, for ranges ≥20 Bar)
  • 0 to 50°C compensated temperature range
  • RS485 communications
  • G 1/4" pressure connection
  • IP65 protection
  • Intrinsically Safe version available

The Keller LEX1 Digital Pressure Gauge is a highly accurate, microprocessor controlled digital pressure gauge. With an optional accuracy of up to ±0.01% over ranges from -1 to 1000 bar, the LEX1 is suitable for nearly any application. Temperature compensation ensures accuracy in all conditions.

The LEX1 Gauge is easy to set up. Two buttons perform set-up and all functions. A dual LCD display indicates current pressure as well as MIN/MAX value. RS485 communications allow the LEX1 to interface with a computer.

The battery-powered LEX1 is a robust instrument with an IP65 rating and optional Ex II 2 G EEx ia IIC T4 classification making it suitable for a wide range of locations and environments. An intrinsically safe version of the LEX1 incorporates an additional protection switch is available for hazardous locations.


Keller Protective Rubber Boot
Protective rubber boot for LEO1, LEO3 and LEX1 pressure gauges
Call for pricing
In Stock


Keller 309030.0003 Carrying Case
Soft carrying case (fanny pack) for digital pressure gauges
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Please consider these optional accessories.

Keller K-103A Serial Converter
2 meter cable serial converter to fischer socket
Keller K-114A USB Converter
Interface converter with Fischer-plug / 5-pin, software CD and USB connection cable
Keller K-114B USB Converter
Interface converter with binder socket 680 / 5-pin, software CD and USB connection cable