2-Colour Display Digital Flow Switch Flow rate range: 10, 25, 50,100 l/min. Minimum unit setting: 0.01 l/min. Fluid (0.1 l/min when the flow rate range is 25, 50, 100 l/min.) Air, N2, Ar, CO2 Repeatability: ±1%F.S. or less Grease-free Flow adjustment valve is integrated. (Reduced piping and space saving) Response time: Either 50 msec., 0.5 sec., 1 sec. or 2 sec. can be chosen.
-Colour Display Digital Flow Switch Integrated flow adjustment valve Reduces piping installation work and space requirements. Special design provides smooth adjustment to match needle rotations. Flow rate Flow characteristics Piping variations 0 Number of needle rotations Series PFM7 One-touch fittings, female threads, straight piping, and bottom piping can be selected. Indicator function Flashing speed varies according to flow rate. Colour changes from green to red when rated flow rate is exceeded.
Series PFM 116 Same size even when the model with different flow rate range (10, 25, 50, 100 l/min) is chosen. 67 Light weight: 55 g (PFM711) (PFM711) (With one-touch fitting, without flow adjustment valve) Conventional model PF2A711: 290 g 43 34 Compact 18 68 Piping space can be reduced Comparison with the conventional model PF2A711 (10 to 100 l/min) Mountable in a narrow location since straight piping length∗ is not required.
Main Functions Selection of fluid Power-saving mode Air, Nitrogen (N2), Argon (Ar) or Carbon dioxide (CO2) can be selected using the buttons. Turning off the display can save power consumption. Secret code setting function The user must input a secret code to cancel the keylock mode. This ensures that only authorised persons can operate the switch. Flashing Flashing The decimal point indicators flash in power-saving mode. For details and other functions, refer to page 33.
Comparison with Float Type Flow Meter With switch output and analogue output Digital display Control by sensor output Visual control Indicated value depends on the viewing angle. With switch output and analogue output Without output function A photoelectric switch, or similar, must be prepared separately. Not subject to pressure variations Indicated value is the same at any installation position. (No conversion is needed.) Indicated value depends on installation position.
SMC Digital Flow Switch Variations For Air Integrated type Remote type Model Measurement flow range l /min Model 1 to 10 5 to 50 10 to 100 20 to 200 50 to 500 150 to 3000 300 to 6000 600 to 12000 PF2A710 PF2A750 PF2A711 PF2A721 PF2A751 PF2A703H PF2A706H PF2A712H Sensor unit PF2A510 PF2A550 PF2A511 PF2A521 PF2A551 — Monitor 4-channel flow monitor PF2A30 PF2A31 — PF2A20 — For Water Integrated type Measurement flow range l /min Model Model Sensor unit PF2W704(T) PF2W720(T) PF2W740(T) PF
Features Series PFM7 Integrated Display How to Order Specifications Series PFM5 Remote Sensor Unit PFM5 Common Specifications P. 3 Analogue Output P. 4 Internal Circuits and Wiring Examples P. 4 Dimensions P. 5 How to Order P. 13 P. 15 Piping Specifications / Weight P. 16 Analogue Output P. 16 Internal Circuits and Wiring Examples P. 16 Dimensions P. 17 Pressure Loss / Flow Characteristics P. 25 Parts Description P.
2-Colour Display Digital Flow Switch Series PFM7 Integrated display ® How to Order Integrated display 7 PFM 7 10 C4 A M Type Made to Order Integrated display (Refer to page 2 and 35.) Rated flow range (Flow rate range) 10 25 50 11 Option 2 0.2 to 10 (5) l/min 0.5 to 25 (12.5) l/min 1 to 50 (25) l/min 2 to 100 (50) l/min (Refer to page 2.) Option 1 (Refer to page 2.
2-Colour Display Digital Flow Switch Series PFM7 Option 1 Nil With lead wire with connector (2 m) W Z With lead wire with connector (2 m) + Rubber cover for connector (silicon rubber) Without lead wire with connector ZS-33-F S 1 ZS-33-D S 2 S 1 1 2 2 ZS-33-D IN IN IN Lead wire length 2 m Lead wire length 2 m Option 2 Nil None R S T Bracket (For without flow adjustment valve) Bracket (For with flow adjustment valve) Panel mount adapter (For without flow adjustment valve) ZS-33-M Z
Series PFM7 Specifications PFM710 Model Applicable fluid Rated flow range (Flow rate range) Displayed flow Note 1) Set flow Note 1) PFM725 PFM750 Dry air, N2, Ar, CO2 (Air quality grade is ISO8573.1-1, 1.2 to 1.6.2.) 1 to 50 l/min 0.5 to 25 l/min PFM711 Dry air, N2, Ar 0.2 to 10 l/min CO2 0.2 to 5 l/min 0.5 to 12.5 l/min 1 to 25 l/min Dry air, N2, Ar 0.2 to 10.5 l/min 0.5 to 26.3 l/min 1 to 52.5 l/min 2 to 105 l/min CO2 0.2 to 5.2 l/min 0.5 to 13.1 l/min 1 to 26.
2-Colour Display Digital Flow Switch Series PFM7 Piping Specifications / Weight 01 Part no. Rc 1/8 Port size Rc 1/4 N01 NPT 1/8 N02 NPT 1/4 F01 G1/8 Wetted parts material Analogue Output C6 C6 N7 G1/4 ø4 (5/32") one-touch fitting ø6 one-touch fitting ø8 (5/16") one-touch fitting 1/4 one-touch fitting Max. rated flow value [l/min] Model 1 Max.
Series PFM7 Dimensions PFM7-C4/C6/C8/N7 28 8 (mm) One-touch fitting Applicable tube O.D. A ø4 (5/32") 64.2 ø6 64.6 ø8 (5/16") 2 x 2.6 depth 5 (34.2) IN OUT2 DC (–) DC (+) ø1/4 68 64.6 OUT 13 43 1 10.2 OUT1 3 1 18 IN 2 x one-touch fitting 2 x 3.4 A 18 48 PFM7-C4L/C6L/C8L/N7L (mm) 8 28 One-touch fitting Applicable tube O.D. A ø4 (5/32") 10.1 ø6 10.3 ø8 (5/16") OUT1 OUT2 DC (–) DC (+) 3 (34.2) 43 1 2 x 2.6 depth 5 10.2 A 1 18 IN OUT 2 x 3.
2-Colour Display Digital Flow Switch Series PFM7 Dimensions PFM7-(N)01/(N)02/F01 8 28 2 x 2.6 depth 5 OUT1 OUT2 DC (–) DC (+) IN OUT 13 (34.2) 43 1 10.2 3 1 IN 2 x port size 18 Rc 1/8, 1/4 NPT 1/8, 1/4 G 1/8 2 x 3.4 70 18 Width across flats 17 48 PFM7-(N)01L/(N)02L/F01L 8 8 28 2 x 2.6 depth 5 OUT1 OUT2 DC (–) DC (+) 3 (34.2) 43 1 10.2 13 1 IN 18 IN OUT 2 x 3.
Series PFM7 Dimensions PFM7-F02 8 28 2 x 2.6 depth 5 IN OUT1 OUT2 DC (–) DC (+) OUT 13 (34.2) 43 1 10.2 1 3 IN 2 x port size 18 18 G 1/4 2 x 3.4 78 Width across flats 21 48 PFM7-F02L 8 28 2 x 2.6 depth 5 OUT1 OUT2 DC (–) DC (+) 3 43 (34.2) 1 10.2 17 1 18 IN 2 x 3.
2-Colour Display Digital Flow Switch Series PFM7 Dimensions PFM7S-C4/C6/C8/N7 (mm) 20 One-touch fitting Applicable tube O.D. A ø4 (5/32") 92.2 ø6 92.6 8 28 ø8 (5/16") ø1/4 96 92.6 3 x 2.6 depth 5 OUT1 OUT2 DC (–) DC (+) 13 3 OUT 51.5 (Max. 58.5) IN (34.2) 43 1 10.2 1 IN 18 2 x one-touch fitting 2 x 3.4 A 76 58 18 48 PFM7S-C4L/C6L/C8L/N8L 28 8 (mm) One-touch fitting Applicable tube O.D. A ø4 (5/32") 10.1 ø6 10.3 ø8 (5/16") 2 x 2.
Series PFM7 Dimensions PFM7S-(N)01/(N)02/F01 20 8 28 OUT2 10.2 DC (–) DC (+) OUT 13 (34.2) 43 IN 51.5 (Max. 58.5) OUT1 1 3 x 2.6 depth 5 IN 3 1 18 2 x port size Rc 1/8, 1/4 NPT 1/8, 1/4 G 1/8 2 x 3.4 98 76 58 18 Width across flats 17 48 PFM7S-(N)01L/(N)02L/F01L 8 28 2 x 2.6 depth 5 OUT1 OUT2 DC (–) DC (+) 51.5 (Max. 58.5) (34.2) 43 1 10.2 13 3 1 IN OUT 2 x 3.
Series PFM7 2-Colour Display Digital Flow Switch Dimensions PFM7S-F02 28 8 20 3 x 2.6 depth 5 DC (–) DC (+) 3 13 OUT OUT2 51.5 (Max. 58.5) IN (34.2) 43 1 10.2 OUT1 1 IN 2 x port size G 1/4 18 2 x 3.4 106 76 58 18 Width across flats 21 48 PFM7S-F02L 8 28 2 x 2.6 depth 5 OUT2 DC (–) DC (+) (34.2) 51.5 (Max. 58.5) OUT1 3 43 1 10.2 17 1 IN 18 IN 2 x 3.
Series PFM7 Dimensions Panel mount / Without flow adjustment valve / Straight Panel mount / With flow adjustment valve / Straight 28 29.9 51.5 (Max. 58.5) A A 58 Panel thickness 1 to 3.2 42.5 76 (mm) (mm) 78 One-touch fitting Applicable tube O.D. A One-touch fitting Applicable tube O.D. A ø4 (5/32") 64.2 ø4 (5/32") 92.2 ø6 64.6 ø6 92.6 ø8 (5/16") ø1/4 68 28 OUT 29.9 IN Panel thickness 1 to 3.2 42.5 3 3 3 ø8 (5/16") 64.6 96 92.
2-Colour Display Digital Flow Switch Series PFM7 Dimensions 1.2 1.2 18 18 43 51.5 (Max. 58.5) With bracket / With flow adjustment valve 48 43 48 With bracket / Without flow adjustment valve 76 48 28 3. 24 4 36 18 26 18 26 34 34 4 x 28 4 x 36 3. 4 Lead wire with connector DIN rail mounting ZS-33-D Brown Black 43 52.4 White Terminal semi-stripped Blue IN 1 IN 1 IN +21– 1 5 ±2 6.5 2020 18 x n pcs. + 34.
2-Colour Display Digital Flow Switch Remote sensor unit Series PFM5 ® How to Order Remote sensor unit PFM 5 10 C4 1 Type 5 Made to Order Remote sensor unit (Refer to page 14 and 35.) Rated flow range (Flow rate range) 10 25 50 11 Option 2 0.2 to 10 (5) l/min 0.5 to 25 (12.5) l/min 1 to 50 (25) l/min 2 to 100 (50) l/min (Refer to page 14.) Option 1 (Refer to page 14.
2-Colour Display Digital Flow Switch Series PFM5 Option 1 Nil With lead wire with connector (2 m) W Z With lead wire with connector (2 m) + Rubber cover for connector (silicon rubber) Without lead wire with connector ZS-33-F ZS-33-D ZS-33-D Lead wire length 2 m Lead wire length 2 m Option 2 Nil None R S T Bracket (For without flow adjustment valve) Bracket (For with flow adjustment valve) Panel mount adapter (For without flow adjustment valve) ZS-33-M ZS-33-MS ZS-33-J Mounting screw (acc
Series PFM5 Specifications PFM510 Model PFM525 PFM550 Applicable fluid Rated flow range Note) (Flow rate range) Dry air, N2, Ar 0.2 to 10 l/min 0.5 to 25 l/min 1 to 50 l/min 2 to 100 l/min CO2 0.2 to 5 l/min 0.5 to 12.5 l/min 1 to 25 l/min 2 to 50 l/min ±3%F.S. or less Accuracy ±1%F.S. or less (Fluid: Dry air) ±5%F.S. or less (based on 0.35 MPa) Repeatability Pressure characteristics Temperature characteristics ±2%F.S. (15 to 35°C) ±5%F.S.
2-Colour Display Digital Flow Switch Series PFM5 Piping Specifications / Weight 01 Part no. Rc 1/8 Port size N01 Rc 1/4 Straight Bottom Straight Bottom Weight NPT 1/8 N02 NPT 1/4 F01 G1/8 Without orifice: 95 g Without orifice: 105 g With orifice: 135 g With orifice: 145 g Straight Bottom Straight Bottom F02 C4 G1/4 ø4 (5/32") one-touch fitting Note: Analogue output at maximum rated flow rate when CO2 is selected is 4.57 [V] for the voltage output type and 18.
Series PFM5 Dimensions PFM5-C4/C6/C8/N7 (mm) 8 28 One-touch fitting Applicable tube O.D. A ø4 (5/32") 64.2 ø6 64.6 ø8 (5/16") ø1/4 68 64.6 2 x 2.6 depth 5 IN OUT1 OUT2 DC (–) DC (+) OUT 13 (34.2) 43 10.2 3 1 18 IN 2 x one-touch fitting 2 x 3.4 A 48 18 FLOW SENSOR POWER FLOW PFM5-C4L/C6L/C8L/N7L 28 8 (mm) 2 x 2.6 depth 5 DC (–) DC (+) (34.2) OUT2 3 43 OUT1 A 1 18 OUT 2 x 3.4 68 88 48 18 FLOW SENSOR 17 A ø4 (5/32") 10.1 ø6 10.3 ø8 (5/16") 10.
2-Colour Display Digital Flow Switch Series PFM5 Dimensions PFM5-(N)01/(N)02/F01 8 28 2 x 2.6 depth 5 IN OUT1 OUT2 DC (–) DC (+) OUT 13 (34.2) 43 10.2 3 1 18 IN 2 x port size Rc 1/8, 1/4 NPT 1/8, 1/4 G 1/8 2 x 3.4 70 Width across flats 17 48 PFM5-(N)01L/(N)02L/F01L FLOW 18 FLOW SENSOR POWER 8 8 28 2 x 2.6 depth 5 OUT1 OUT2 DC (–) DC (+) 3 (34.2) 43 10.2 13 1 IN 18 IN OUT 2 x 3.
Series PFM5 Dimensions PFM5-F02 8 28 2 x 2.6 depth 5 IN OUT1 OUT2 DC (–) DC (+) OUT 13 (34.2) 43 10.2 1 3 IN 2 x port size 18 18 G 1/4 2 x 3.4 78 Width across flats 21 48 FLOW SENSOR POWER PFM5-F02L FLOW 8 28 2 x 2.6 depth 5 OUT2 OUT1 10.2 DC (+) 3 (34.2) 43 DC (–) 17 1 18 IN 2 x 3.
2-Colour Display Digital Flow Switch Series PFM5 Dimensions PFM5S-C4/C6/C8/N7 20 (mm) 8 28 ø4 (5/32") 92.2 ø6 92.6 IN OUT2 DC (–) DC (+) 96 92.6 13 3 OUT OUT1 ø1/4 51.5 (Max.58.5) 10.2 (34.2) A ø8 (5/16") 3 x 2.6 depth 5 43 One-touch fitting Applicable tube O.D. 1 IN 18 2 x one-touch fitting 2 x 3.4 A 76 58 48 18 FLOW SENSOR POWER FLOW PFM5S-C4L/C6L/C8L/N8L (mm) 8 28 One-touch fitting Applicable tube O.D. A ø4 (5/32") 10.1 ø6 10.3 ø8 (5/16") 2 x 2.
Series PFM5 Dimensions PFM5S-(N)01/(N)02/F01 20 8 28 3 x 2.6 depth 5 OUT2 DC (–) DC (+) 13 OUT OUT1 51.5 (Max. 58.5) IN (34.2) 43 10.2 1 IN 3 2 x port size Rc 1/8, 1/4 NPT 1/8, 1/4 G 1/8 18 2 x 3.4 98 76 58 Width across flats 17 48 18 FLOW SENSOR POWER FLOW PFM5S-(N)01L/(N)02L/F01L OUT1 OUT2 10.2 DC (–) DC (+) 51.5 (Max. 58.5) 2 x 2.6 depth 5 (34.2) 43 8 28 13 3 1 IN OUT 2 x 3.
2-Colour Display Digital Flow Switch Series PFM5 Dimensions PFM5S-F02 20 8 28 3 x 2.6 depth 5 OUT2 DC (–) DC (+) 13 3 OUT OUT1 51.5 (Max. 58.5) IN (34.2) 43 10.2 1 18 IN 2 x port size G 1/4 2 x 3.4 106 76 58 Width across flats 21 48 18 FLOW SENSOR POWER FLOW PFM5S-F02L 8 28 2 x 2.6 depth 5 OUT2 DC (–) DC (+) 51.5 (Max. 58.5) OUT1 3 (34.2) 43 10.2 17 1 IN 18 IN 2 x 3.
Series PFM5 Dimensions Panel mount / Without flow adjustment valve / Straight Panel mount / With flow adjustment valve / Straight FLOW One-touch fitting Applicable tube O.D. A ø4 (5/32") 64.2 ø6 64.6 ø8 (5/16") ø1/4 68 64.6 51.5 (Max.58.5) (mm) 78 FLOW SENSOR 28 FLOW SENSOR 28 A 29.9 58 POWER FLOW One-touch fitting Applicable tube O.D. A ø4 (5/32") 92.2 ø6 92.6 ø8 (5/16") ø1/4 Panel mount / With flow adjustment valve Panel thickness 1 to 3.2 42.5 Panel thickness 1 to 3.
Series PFM5 2-Colour Display Digital Flow Switch Dimensions 1.2 1.2 18 18 43 51.5 (Max. 58.5) With bracket / With flow adjustment valve 48 43 48 With bracket / Without flow adjustment valve 76 48 28 3. 24 4 36 4 x 28 18 26 34 POWER 18 26 34 FLOW SENSOR FLOW SENSOR POWER FLOW FLOW 4 x 36 3. 4 Lead wire with connector DIN rail mounting ZS-33-D Brown Black 43 52.4 White Terminal semi-stripped Blue IN 1 IN 1 IN +21– 1 5 ±2 6.
Series PFM7/PFM5 Common Specifications Pressure Loss (Pressure: 350 [kPa]) PFM710, 510 / For 10 (l/min) PFM725, 525 / For 25 (l/min) 1.0 0.30 Pressure loss (kPa) Pressure loss (kPa) 0.35 0.25 0.20 0.15 0.10 0.05 0 1 4 2 6 8 0.8 0.6 0.4 0.
2-Colour Display Digital Flow Switch Series PFM7/PFM5 Parts Description PFM7 LED display Button Output (OUT2) indicator Output (OUT1) indicator Button S 1 Flow adjustment valve Knurled lock nut 2 Output (OUT1) indicator (Green) Illuminates when the output (OUT1) is turned on. Flashes when overcurrent error occurs. Output (OUT2) indicator (Red) Illuminates when the output (OUT2) is turned on. Flashes when overcurrent error occurs.
Series PFM7/PFM5 Component Parts No.
Flow Sensor Monitor Series PFM3 ® How to Order Output specification 0 1 2 3 4 5 Instruction manual 2 NPN outputs + 1 to 5 V output 2 NPN outputs + 4 to 20 mA output 2 NPN outputs + External input Note) 2 PNP outputs + 1 to 5 V output 2 PNP outputs + 4 to 20 mA output 2 PNP outputs + External input Note) Nil N Calibration certificate Nil A Note) User can select from accumulated value external reset, auto-shift and auto-shift zero.
Series PFM3 Specifications PFM3 Model Rated flow range (Flow rate range) Note 1) Displayed flow range Set flow range Note 1) Dry air, N2, Ar 0.2 to 10 l/min 0.5 to 25 l/min 1 to 50 l/min CO2 0.2 to 5 l/min 0.5 to 12.5 l/min 1 to 25 l/min 2 to 50 l/min Dry air, N2, Ar 0.2 to 10.5 l/min 0.5 to 26.3 l/min 1 to 52.5 l/min 2 to 105 l/min CO2 0.2 to 5.2 l/min Dry air, N2, Ar CO2 Minimum unit setting Note 2) Accumulated pulse flow rate exchange value 2 to 100 l/min 0.5 to 13.
Flow Sensor Monitor Series PFM3 Internal Circuits PFM30 PFM33 PNP open collector output: 2 outputs Max. 80 mA, residual voltage 1 V or less Analogue output: 1 to 5 V Output impedance: approx. 1 kΩ + (Black) OUT2 (White) DC (–) – 12 to 24 VDC (Black) OUT2 Load – 12 to 24 VDC (Blue) PFM31 PFM34 PNP open collector output: 2 outputs Max. 80 mA, residual voltage 1 V or less Analogue output: 4 to 20 mA Max. load impedance: 300 Ω (12 VDC) 600 Ω (24 VDC) Min.
Series PFM3 Descriptions LCD Display Shows the current flow rate, mode setting, selected display unit, and error code. Four display modes are available, some of which use indications that are fixed either red or green, and others use indications that change from green to red. Output (OUT1) Indicator (Green) Lights when the output (OUT1) is turned on. Button Used for mode selection and increasing the ON/OFF setting value. Also used to switch to peak display mode.
Flow Sensor Monitor Series PFM3 Dimensions 31 20 ± 0.1 30 3 2 x M3 x 0.5 Thread depth 4 10 1.5 Power supply / Output connector Sensor connector 1.5 3.2 8.2 Sensor connector (ZS-28-C-1) Pin no. 1 2 3 4 Terminal name DC (+) N.C. DC (–) IN∗ ∗ 1 to 5 V or 4 to 20 mA A 30 With bracket 26.5 31.5 15 10 7.2 1.6 40 4.2 46 20 22 35 41 View A Bracket With panel mount adapter With panel mount adapter + Front protective cover 42.4 7 8.75 24 34.5 Panel thickness dimension: 0.
Series PFM3 Dimensions Panel fitting dimensions Secure mounting of n (2 or more) switches (horizontal) 24 or more 1 pc. 31 x n pcs. + 3.5 x (n pcs. – 1) 0 0 31–0.4 31–0.4 0 31–0.4 4 x R2 or less 4 x R2 or less Secure mounting of n (2 or more) switches (vertical) 0 31–0.4 31 x n pcs. + 3.5 x (n pcs. – 1) 24 or more 4 x R2 or less Note) If a bend (R) is used, limit it to R2 or less.
Series PFM Function Details Output operation Selection of analog output filter At the time of shipment from the factory, it is set to hysteresis mode and normal output.
Series PFM7/PFM5 Made to Order 1 Please contact SMC for detailed specifications, lead times and prices. Symbol Changing the piping entry direction combination for IN and OUT side PFM 7 X693, X694 X693 Piping entry direction Type 5 7 Note) No symbol is entered. Changing the piping entry direction combination X693 X694 Remote sensor unit Integrated display IN side: Straight / OUT side: Bottom IN side: Bottom / OUT side: Straight For details of How to Order, refer to page 1 and 13.
Series PFM7/PFM5 Made to Order 2 Please contact SMC for detailed specifications, lead times and prices. Dimensions PFM 75 S-C4/C6/C8/N7--X693 PFM 75 S-C4/C6/C8/N7--X694 10.2 51.5 (Max. 58.5) 1 18 2 x 3.4 B 3 A A 3 13 13 43 OUT (34.2) 51.5 (Max. 58.5) IN (34.2) 43 1 10.2 OUT 48 IN 20 18 20 B 48 2 x 3.4 One-touch fitting Applicable tube O.D. A B One-touch fitting Applicable tube O.D. A B ø4 (5/32") 10.1 8.1 ø4 (5/32") 10.1 36.1 ø6 10.3 8.3 ø6 10.3 36.
Series PFM7/PFM5 Made to Order 3 Please contact SMC for detailed specifications, lead times and prices. Symbol Compatibility with argon (Ar) and carbon dioxide (CO2) mixed gas X731 The argon–carbon dioxide gas ratio (Ar: CO2) can be selected using the push-buttons from among the following: 92 : 8, 90 : 10, 80 : 20, 70 : 30, and 60 : 40. Dimensions are same as those of standard models.
Series PFM Safety Instructions These safety instructions are intended to prevent a hazardous situation and/or equipment damage. These instructions indicate the level of potential hazard by labels of "Caution", "Warning" or "Danger". To ensure safety, be sure to observe ISO 4414 Note 1), JIS B 8370 Note 2) and other safety practices.
Series PFM Specific Product Precautions 1 Be sure to read this before handling. Refer to the back of page 1 for Safety Instructions and “Precautions for Handling Pneumatic Devices” (M-03-E3A) for Common Precautions. Design and Selection Warning Caution 1. Operate the switch only within the specified voltage. Use of the switch outside of the specified voltage range can cause not only a malfunction and damage to the switch, but it can also cause electrocution and fire. 2.
Series PFM Specific Product Precautions 2 Be sure to read this before handling. Refer to the back of page 1 for Safety Instructions and “Precautions for Handling Pneumatic Devices” (M-03-E3A) for Common Precautions. Wiring Mounting Warning Caution 1. Observe the proper tightening torque. When the switch is tightened beyond the specified tightening torque, the switch may be damaged. 2. Do not mount the switch in a place that will be used as a scaffold.
Series PFM Specific Product Precautions 3 Be sure to read this before handling. Refer to the back of page 1 for Safety Instructions and “Precautions for Handling Pneumatic Devices” (M-03-E3A) for Common Precautions. Maintenance Warning 1. Perform periodical inspections to ensure proper operation of the switch. Unexpected malfunctions may cause possible danger. 2. Take precautions when using the switch for an interlock circuit.
Series PFM Specific Product Precautions 4 Be sure to read this before handling. Refer to the back of page 1 for Safety Instructions and “Precautions for Handling Pneumatic Devices” (M-03-E3A) for Common Precautions. Settable Range and Rated Flow Range Caution Set the flow rate within the rated flow range. The regulating flow rate range is the range of flow rate that can be set in the switch. The rated flow range is the range that satisfies the switch specifications (accuracy, linearity etc.
EUROPEAN SUBSIDIARIES: Austria SMC Pneumatik GmbH (Austria). Girakstrasse 8, A-2100 Korneuburg Phone: +43 2262-62280, Fax: +43 2262-62285 E-mail: office@smc.at http://www.smc.at France SMC Pneumatique, S.A. 1, Boulevard de Strasbourg, Parc Gustave Eiffel Bussy Saint Georges F-77607 Marne La Vallee Cedex 3 Phone: +33 (0)1-6476 1000, Fax: +33 (0)1-6476 1010 E-mail: contact@smc-france.fr http://www.smc-france.
