Introduction:

The explosion-proof metal tube rotameter consists of a measuring tube (sensor) and an indicator (electronic converter). By selecting different types of measuring tubes and indicators, various complete units can be assembled to meet on-site requirements.

Indicator Selection:

Users can choose from on-site display models, electric remote transmission models, intrinsically safe explosion-proof models, explosion-proof models, or models with HART protocol, detailed descriptions of the functions of various indicators are listed below.

Indicator Type



Instrument Function Description

M1 Model

Local pointer indicates flow rate; no power required; no 4~20mA remote transmission; optional flow alarm unit; scale can be set to instantaneous flow rate or percentage scale value.

M3 Model

Local digital display, battery-powered, no 4~20mA remote transmission, non-explosion proof. LCD shows instantaneous and accumulated flow rates. On-site buttons are used to view and modify relevant parameters. The battery can last for 6 months. Replace the battery when the T character appears on the display (Battery model: ER26500, 3.6V, 7.5AH, -55℃~85℃).

M4 Model

Electrical remote transmission, inherently safe design, explosion-proof marking ExdⅡCT6, optional HART protocol function. Powered by DC24V, features on-site pointer indicating instantaneous flow and digital display of instantaneous and cumulative flow. Two-wire system with 4-20mA output, panel equipped with 4 buttons for viewing and modifying internal parameters. For detailed instructions, see page 18.

M5 model

Electrical remote transmission, explosion-proof design, with防爆标志ExdⅡCT6, optional HART protocol functionality. Powered by DC24V,现场indicator displays instantaneous flow and digital display for both instantaneous and accumulated flow. Two-wire system with 4~20mA output. The panel features 4 buttons for viewing and modifying internal parameters.