Pico-Flow

The Gastech GMSx Pico-Flow is a handheld electronic gas installation dispersion detector built around a high-accuracy, high-repeatability thermal mass flow sensor in a slim upright body with yellow side rails, a color display screen, and a five-button operating panel — including dedicated D, FN, R, backlight, and mute function keys. Two top-mounted pressure ports connect the instrument directly into the gas installation under test. The color display outputs simultaneous pressure readings, methane concentration values in PPm, dispensing gas flow data, and system status on a single screen. The unit operates on the direct air method under UNI 11137 — measuring actual air mass transiting through the sensor to compensate for installation leakage — a method entirely independent of fluid or ambient temperature. Thermal paper printing capability delivers a certified dispersion test certificate on-site with a customizable company header.

The thermal mass flow sensor’s independence from temperature fluctuations eliminates the stabilization waiting times and thermal compensation errors associated with conventional pressure-decay methods. The microprocessor architecture keeps the test workflow straightforward for field operators, reducing procedural errors during routine gas installation verification visits. The instrument simultaneously monitors pressure conditions and gas dispersion during the test, giving the operator a complete real-time picture of installation status on a single screen. The compact handheld form factor allows single-operator use without support equipment, reducing the time and logistics required at each user connection visit.

The Gastech GMSx Pico-Flow is deployed by gas distribution operators and utility field technicians during mandatory internal gas installation verification visits — including new user connection openings, reconnections after non-payment suspension, and post-emergency inspections of residential and commercial internal gas systems. It is used wherever the operator requires a simultaneous pressure and dispersion reading from the same device in a portable format suited to repeated daily field visits across multiple customer sites.

Leader Infra supplies this compact handheld dispersion and pressure instrument for gas utility operators and field service contractors — delivering UNI 11137 direct-method dispersion testing with integrated pressure monitoring, on-site certificate printing, and full L.G. 12 compliance in a single palm-sized field unit.

FAQ — What does the simultaneous multi-parameter display on the GMSx Pico-Flow show during an active dispersion test? During an active test, the color display simultaneously shows the main pressure reading, methane concentration in PPm, dispensing gas flow value, and current system status — giving the operator a complete real-time view of installation behavior across all key parameters without switching between screens or modes at any point during the test sequence.