KELLER LEO 1 digital pressure peak gauge

KELLER has released the LEO 1, a microprocessor-controlled digital pressure peak gauge which polls the value for the pressure variable in a process 5000 times each second. This results in detection of short pressure peaks, usually caused by fast-switching hydraulic valves and pump units, and means action can be taken to prevent damage.

The user-friendly, two-key operating system provides access to the entire range of functions. The stored max/min can be erased and reset to zero, or the device can be switched to continuous mode. The device switches off automatically about 15 min after the last key is pressed, extending the battery life where continuous operation is not required. After switching over to continuous operation, the battery has sufficient capacity for up to 1400 h in manometer mode and up to 180 h in peak value mode.

The dual digital display updates twice every second, showing the measured value and the minimum or maximum value attained. In the compensated temperature range from 0 to 50°C, typical overall accuracy is 0.2%FS. In addition, the product has a zero tare feature that allows the user to set the zero at any pressure, so the manometer will then always show deviations from the zero tare value as the actual value.

With just two keys, the user can parameterise all the functions on the peak value manometer. These include a choice of five different units of measurement and neutralisation of the stored extreme values at the start of an observation period. The product is available in IP65-rated housing with four practice-based measurement ranges.