Low-pressure checks need a compact instrument that gives stable readings directly at the measuring point. This precision manometer family uses an integrated piezo-resistive pressure sensor for air and non-corrosive, non-ionizing gases and liquids, with model ranges from 500.0 Pa up to -1000 ... 2000 mbar.
Users can measure overpressure, underpressure, pressure differences and, with absolute variants, atmospheric pressure up to 0 ... 1300 mbar absolute. Selectable pressure units, a dual LCD, min/max memory, hold and tara functions make routine checks clear and fast, whether the device is used in service work, laboratory checks or controlled field measurements.
GMH 318x versions add logger functions, alarm settings, >1000 meas./sec measuring modes and a scalable 0 ... 1 Volt analog output. Both GMH 316x and GMH 318x devices provide a serial interface for PC connection via electrically isolated adapters.
The devices include a piezo-resistive pressure sensor and do not require an external pressure sensor for operation.
Metal pressure ports accept 6 x 1 mm or 8 x 1 mm plastic tubes, depending on the device type and pressure connection.
Relative versions measure overpressure, underpressure and pressure differences. Absolute versions measure absolute pressure.
Absolute pressure variants GMH 3161-12 and GMH 3181-12 include sea-level correction with altitude input.
GMH 318x devices support individual value storage and cyclic recording with selectable cycle time from 1...3600 seconds.
GMH 318x devices offer a selectable serial interface or scalable 0 ... 1 Volt analog output through the 3.5 mm connection.
Two four-digit LCDs show measured values, min/max values and hold values, with function arrows for selected operating states.
Devices operate from a 9V battery and include a connector for external 10.5-12V DC supply.
