The LEO 1 is an autonomous battery powered manometer with digital display designed for monitoring sudden pressure changes in a standalone unit. The LEO 1 features a micro-processor with a 5KHz fast peak function that can show Max and Min values of pressure spike or troughs. Pressure ranges are available from -1 to 3 Bar up to 0-1,000 Bar. The internal battery will provide up to 1,000 hours continuous operation. Accuracy is ±0.2%FS (0-50°C). The LEO 1 is available for safe area use and the LEO 1Ei for hazardous area installation.

The Keller LEO2Ei is a hazardous area approved digital manometer and available from stock. The LEO2EI is a highly accurate, battery-powered digital manometer designed for precise pressure measurement. The gauge uses a piezoresistive pressure cell, ensuring accuracy of 0.1% full scale, it also features peak hold and selectable pressure units. The LEO2EI is ATEX Certified for use in hazardous areas, making it suitable for demanding industrial applications. The Internal battery provides with up to 1,000 hours continuous operation.

The LEO Record is an autonomous battery powered manometer with digital display designed for monitoring pressure and temperature in a standalone unit. The LEO Record uses a piezoresistive pressure cell. Pressure ranges are available from -1 to 3 Bar up to 0-2000 Bar. Internal memory for 57,000 readings and internal 3.6V Lithium battery allows up to 2 years operations. Logged data can be viewed in table or graph format and exported to MS Excel using the K114A and Kolibri Desktop software. Accuracy is ±0.1%FS and 0.5°C, operating temperature 0 to 50°C. The LEO Record is available as an intrinsically safe version from stock suitable for hazardous ATEX area installations.

LEO-Record-H2 is a digital gauge with logging function for Hydrogen Applications. The digital manometer includes a higher Nickel content in the Stainless Steel components to lower embrittlement and a Gold plated diaphragm to minimise H2 diffusion. Recording function is the same as the standard LEO Record gauges with the same K114A download cable and Pressure Suite software. Separate LEO-Record-Ei-H2 is available for installations in Hazardous Areas.

The LEO Record CAPO is an autonomous battery powered manometer with digital display designed for monitoring pressure and temperature in a standalone unit. The LEO Record CAPO uses a capacitive ceramic pressure cell making it ideal for low pressure ranges. Available ranges as 30, 100 and 300mBar with either a relative or differential pressure reference and bi-directional ranges. Internal memory for 57,000 readings and internal 3.6V Lithium battery allows up to 2 years operations. Accuracy is ±0.2%FS and 0.5°C, operating temperature 0 to 50°C. The LEO Record CAPO is also available as an intrinsically safe version.

LEX1Ei Digital Manometer is a highly precise pressure indicator with available pressure ranges up to 1000 Bar suitable for hazardous area installations. The LEX1Ei is a micro-processor controlled, digital pressure measuring instrument with integrated max.- and min- function for testing and calibration purposes. Standard accuracy is 0.05%FS with optional precision of 0.025%FS and 0.01%FS. The LEX1Ei comes with ATEX certification for hazardous area use (intrinsically safe).