MAX FLOW SIZES FROM 10 TO 70 GPM (60 TO 265 LPM) MAX LIQUID PRESSURE 300 PSI (20.69 BAR) Flow rate indicator with switch(es) or transmitter. MN LUBE MN Series, "A" style control box Flow meters, Flow switches and Flow transmitters For Circulating Lubrication Oil DESCRIPTION These are variable area meters with a spring biased semi-circular vane that opens wider with more ow. They are installed in-line in any position. Straight pipe runs before or after the meter are not required. The simple mechanical connection directly drives pointers, switches and transmitters. CALIBRATION All ow meters are individually calibrated for uids with the viscosity you specify (up to 3000 SSU/660 Centistokes). We also compensate for your uid’s specic gravity. For NIST Traceability please consult factory. ENGINEERING DATA Maximum uid temperature: 200°F (95°C) C D Maximum ambient temperature: 150°F (65°C) F A G B Readout accuracy, full scale: ±2% Switch repeatability 1% of actual ow. E Fluid enters at A, passes around the semi-circular vane B, exits at outlet C. The vane resists the ow because of the spring D. The further the vane is pushed the larger the passageway E becomes. This minimizes the pressure drop. The vane shaft turns to operate the pointer F and remote signal devices such as the switch G. FLOW & PRESSURE DROP Units impose a pressure drop that increases with ow from 1.9 to 3.8 PSI. STANDARD OFFERING: Control Box “A” CONSTRUCTION MATERIALS 5.50 [140mm] PORT TO PORT 2.41 [61mm] 6.84 STD. SPRING [174mm] The body is aluminum with nylon. Internal moving parts are stainless steel. Seals are Buna-N. 3/4" NPT CONDUIT CONNECTION A B LINE CONNECTION Ports are threaded and can be NPT (1/2 to 2") or SAE straight thread (1/2 to 1-1/2"). Metric threads such as BSPP or BSPT are also available. C 3.31 [84mm] MAX PORT SIZE (NPT) 1/2 TO 1-1/2 2 A 5.96 5.96 1 AA 8.60 9.58 B 4.54 4.91 C 5.96 6.12 6.00 [152mm]

HOW TO ORDER Select appropriate symbols and build a model code number, as in example shown: EXAMPLE: SERIES Medium vane style Normal pressure (300 PSI) HOUSING MATERIAL Aluminum with nylon ow chamber INTERNAL MOVING PARTS Stainless steel (300 series) SEAL MATERIAL Buna N MN - A S B 3ØGM - 8- 1ØØCS.9 - = MN = A = S = B MAX FLOW RATE LIQUIDS GPM: 1Ø, 15, 2Ø, 3Ø, 4Ø, 5Ø, 6Ø, 7Ø LPM: 4Ø, 5Ø, 6Ø, 7Ø, 8Ø, 9Ø, 1ØØ, 15Ø, 2ØØ, 25Ø CMH: 2.25, 2.5, 3, 4, 5, 6, 7, 8, 9, 1Ø, 15 Pipe size and attachment method = GM = LM = CMH THREADED ATTACHMENT Pipe Size NPT SAE In Inches 1/2 4 8T 3/4 6 12T 1 8 16T 1 1/4...

A1 X SERVICE Oil and dust tight (Type 12) = Weatherproof (Type 4) = Weatherproof, corrosion proof (Type 4X) = = = = = ST - 4D N W X FLOW DIRECTION Left to right Right to left Up Down R- R L U D SPECIAL OPTIONS High vibration modication (Order with A1B switch below) Stainless steel ID tag Manual override (required for eld change of set point for switch) = = = ZRL ST E SWITCH SETTING Desired set point is assumed to be in ow units already selected (GPM). Give ow rate followed by a “D” for ow going down (ow failure) or a “U” for ow going up. Example, 4D indicates a setting of 4 GPM in declining ow....