Non-Adjustable Flow Switches M-80 Series All stainless, fixed setting flow switch with in-line flow Features • Available in a wide range of fixed flow settings • High reliability • Extremely sensitive • Low hysteresis • Low pressure drop • Large port sizes Applications Operation The M-80 is a flow operated switch for fitting directly in the pipe work. The variable area flow sensing element , mounted on the pipe axis, moves at a preset flow rate from its rest position to an open position where it causes minimum impedance to Illustrated is the M-80 the flow. The moving Model with 1” ports. member embodies a permanent magnet, which operates a reed switch, which is mounted transversely in the pipe body in a sealed pocket. Process flow monitoring Chemical delivery systems Cooling water flows High volume gas flows Heat exchangers Transformers Brewery process applications Calibration Range * Air: Water: 2.3 to 70.6 scfm 2.5 to 80 l/min * These calibration ranges are over different valve sizes. Please see “Standard Flow Set Point Table.” Specifications Set Point Accuracy: Repeatability: Hysteresis: Non-Adjustable Flow Switches The M-80 Series flow switches are engineered and field tested for sensing increasing and decreasing flow rates of gases or liquids. Pressure variation effects are minimal. This series features such versatility, economy, and accuracy that they can be used in virtually any application requiring fool-proof inexpensive flow detection. (The M-80 Series is manufactured under license from CT Platon Ltd., United Kingdom.) • • • • • • • ±10% maximum ±2% 10% Material Version • 316 Stainless Steel Port Sizes • 1” BSPP or 1” MNPT available • 2” Flanged ANSI (150# Rf) malema flow sensors Catalog # 219: 1

M-80 Series Standard Specifications by Materials P or t S i z e 1" B S P F e m a l e B od y 2" F l a n g e d 316SS Sta inle ss Ste e l with pe rma ne nt ma gne t in a xia lly mounte d moving me mbe r F l ow S e n sor O-Ri n g s Nitrile P r e ssu r e a n d Te m pe r a t u r e S pe c i f i c a t i on s Ma xmimum Ope ra ting (psig) Burst (psig) Ma ximum Ope ra ting Te mpe ra ture R e e d S wi t c h D a t a ( E l e c t r i c a l R a t i n g s) Re e d Switch Switching Volta ge Bre a kd own Volta ge DC Re sistive AC Re sistive Switching Curre nt Ca rrying Curre nt Le a d W ire s 1000 3000 70 C/158°F...

Non-Adjustable Flow Switches Dimensional Drawings Illustrated is the M-80 Model with 1” bspp ports. Illustrated is the M-80 Model with 2” flanged ports. Standard Flow Set Point Table F low Se tting (scfm) Air @ ATP (20 C a nd 14.7 psi) 1 2 3 4 5 1 2 3 4 5 1" - 2.5 5 10 20 - 2.3 4.4 8.8 17.7 2" - 10 20 40 80 - 8.8 17.7 35.3 70.6 Non-Adjustable Flow Switches F low Se tting (l/min) W a te r @ 20 C Port Size Ordering Information S t a n d a r d P a r t N u m be r i n g M - Mod e l - Ma te ria l Port Switch F low Se t Point M - 80 - S 1 3 4 80 S - 316 Sta inle ss 1 - 1" BSPP * 2 - 2" F la nge d 3S...