Flow Meters

MLS Series — Rotameter

Name: MLS Series — Rotameter
Brand: Sightflow

Plastic flow meter · Adjustable front alarm setting

Select a scale for your application, then choose the available connections and options. Original drawings and the complete source PDF are included below.

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MLS Series

Technical data

Application and operating limits

Service: Water and air
Accuracy: ±5% of full scale
Mounting: Vertical; bottom rear to top rear flow
Working pressure: 1.2 MPa (12 kg/cm² as printed in PDF)
Temperature: −10 to 60°C, PC body
Test pressure: 1.4 MPa at water 25°C; not an operating rating
Weight: 0.3–0.4 kg

Materials and alarm

Body: Polycarbonate (PC)
Float / seal: Stainless steel 316 / Viton
Connections: Stainless steel; ½ in NPT, PT or G (PF) female
Needle valve: With or without
Alarm: One setting; form A normally open bistable reed switch, standard ↑ON
Setting range: 10–80% of full scale
Switch rating: AC 125 V / 0.5 A; DC 100 V / 10 W; maximum DC 250 V <40 mA

Dimensions and construction

MLS Series original dimensions from datasheet — MLS — Original dimensional drawing

MLS body dimensions — mm
Width	Overall height	Connection centres	Rear projection	Base depth
43	201	146	36.5	49.5

MLS Series original direction from datasheet — MLS — Bottom rear to top rear

MLS flow direction and options
Flow direction	Alarm	Needle valve
Bottom rear to top rear	One setting; with or without	With or without

Select your MLS Series meter

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Specifications are general selection guidance. Confirm materials, connection standards, operating temperature and pressure with Sightflow before placing an order.