Microlectra bv. www.microlectra.nl info@microlectra.nl Pressure switch FF.11 up to 25, ample wiring room, easy to adjust high repeatability of set switchpoints, easily read scale 151 mm 75,5 mm a 1 mm,5 mm 13 mm FF -2, FF -, FF -8, FF -16, FF -32 5,5 mm 5 mm mm 8,5 mm 77,5 mm Applications Air compressors, water pumps, booster pumps, firefighting equipment, oil supply equipment. Description TIVAL pressure switches of the FF series are suitable for a wide range of applications. They can be utilized for: Monitoring and controlling the pressure of liquid or gaseous media in pipelines, tanks, vats, pressure vessels and apparatus. Applications in process control, cooling, pneumatics and hydraulics. Pressure monitoring of cooling circuits and lubrication systems on various types of machinery. Automatic switching of pump and compressor motors for supplying water to dwellings, booster pumps, firefighting equipment and on compressed air systems.? Mode of operation The pressure of the monitored medium operates against a flat diaphragm, bellows or plunger (depending on pressure range). A system of levers and springs work on a snapaction cascade switch of high vibration resistance, ensuring flutterfree switching. With no pressure on the diaphragm contact 1-2 is closed. This can be used as an ON signal for a pump or compressor motor. If pressure exceeds the upper switchingpoint, contact 1-2 opens and contact 1- closes. The connected motor will be switched off. Contact 1- is often used to indicate the off condition. Contact 1-2 will close again, when the pressure on the diaphragm has dropped below the set lower switchpoint. Upper and lower switch points can be adjusted independently of each other using a screwdriver. The two switch points are indicated on the scale inside the unit. 151 mm 75,5 mm 57 mm 1 mm 13 mm,5 mm 5,5 mm mm 5 mm 8,5 mm 77,5 mm FF -12, FF -3, FF -6, FF -12, FF -25 Change-over contact with manual reset min.: If the pressure drops below the set value, contact 1- opens and contact 1-2 closes and locks. When the pressure has risen above the set value, the contact can be unlocked with the manual reset button. Change-over contact with manual reset max.: If the pressure rises above the set value, contact 1-2 opens and contact 1- closes and locks. When the pressure has dropped below the set value, the contact can be unlocked with the manual reset button. Pressure connection, pressure sensing element, switch mechanism and electrical terminals are fitted on a die-cast aluminum-alloy base. The scale and switch are protected against environmental effects by an impact-resistant, transparent polycarbonate cover, (CTI 2-225) and can be lead-sealed. Included in standard units: Rubber grommet with orifice for cable entry, pressure connector Y, made out of plastic for demineralised water applications. Options upon request: Gold flashed contacts Cable gland M 2 for protection IP 65 Viton diaphragm for aggressive media Manual reset GL - approved version UL / CSA - approved version ATEX - approved version VdS - approved version
)!, perbunan diaphragm for mineral oils, water and air. Additional type G = gold flashed contacts Pressure switch with Pressure connector: H (G 3/8 Female thread, DIN ISO 228/I), silumin. VDE 66, IEC 337-1, IEC 553-1 adjustable () adjustable () () pressure () pressure () () FF -2 DAH,11... 2,... 1,89,7,11 2,5 / 1,5 1161 FF -2 DAH G,11... 2,... 1,89,7,11 2,5 / 1,5 1119 FF - DAH,22...,7... 3,75,15,25 2 1 / 3 1162 FF - DAH G,22...,7... 3,75,15,25 2 1 / 3 1112 FF -8 DAH,5... 8,2... 7,5,3,5 3 2 / 6 1178 FF -8 DAH G,5... 8,2... 7,5,3,5 3 2 / 6 1196 FF -16 DAH 1... 16,... 15,6 1 36 8 / 12 1181 FF -16 DAH G 1... 16,... 15,6 1 36 8 / 12 1112 FF -32 DAH 2... 32,8... 3 1,2 2 52 6 1 / 2 1176 FF -32 DAH G 2... 32,8... 3 1,2 2 52 6 1 / 2 113 with perbunan diaphragm and plastic pressure connector suitable i.e. for demineralised water. Pressure switch Pressure connector: Y (G 3/8 Female thread, DIN ISO 228/I), polyamid. VDE 66, IEC 337-1, IEC 553-1 Control pressure switch FF -... DAY adjustable () adjustable () () pressure () pressure () () FF -2 DAY,11... 2,... 1,89,7,11 6 12,5 / 1,5 1177 FF - DAY,22...,7... 3,75,15,25 8 12 1 / 3 1163 FF -8 DAY,5... 8,2... 7,5,3,5 12 16 2 / 6 118 FF -1 DAY,7... 1,3... 9,2,,8 12 16 / 5 1173 FF -16 DAY 1... 16,... 15,6 1 2 2 / 12 1182 Microlectra bv. Augustapolder 12. 2992 SR Barendrecht. Netherlands. Tel 31()186-61629 Fax 31()186-6139 www.microlectra.nl info@microlectra.nl
PED, Pressure switch with stainless steel bellows Declaration of Conformity in acc. with media temperature up to 2 C, de-ionised water Pressure connector: G (G 1/ Female thread DIN ISO 228/I), stainless steel. VDE 66, IEC 337-1, IEC 553-1 Control pressure switch FF -... AAG/PAH adjustable () adjustable () () pressure () pressure () () FF -12 AAG 1... 12,5... 11,2,5,8 12 16 6 / 7 117 FF -3 AAG... 3 1... 26, 1,8 3,6 3 2 16 / 2 1166 High pressure switch with plastic plunger. Throttle is fitted as standard on these units. This must be removed for use with viscous media. Pressure connector: H (G 3/8 Female thread, DIN ISO 228/I), stainless steel. VDE 66, IEC 337-1, IEC 553-1 adjustable () adjustable () () pressure () pressure () () FF -6 PAH 8... 6... 52 8 1 12 2 / 116 FF -12 PAH 16... 12 8... 1 8 16 2 2 2 / 8 1179 FF -25 PAH 3... 25 1... 226 12 2 5 1 / 2 1172
manual reset Pressure switch with DDH = reset min., DRH = reset max. Pressure connector: H (G 3/8 Female thread, DIN ISO 228/I), silumin. VDE 66, IEC 337-1, IEC 553-1 Control pressure switch FF -... with manual reset reference switch pt. switch pt. diff. operating test setting adjustable () adjustable () () pressure () pressure () () FF -2 DRH,11... 2,2 2,5 / 1,5 1116 FF -2 DDH,... 1,89,1 2,5 / 1,5 1117 FF - DRH,22...,5 2 1 / 3 1116 FF - DDH,7... 3,75,2 2 1 / 3 111 FF -8 DRH,5... 8 1, 3 2 / 6 1169 FF -8 DDH,2... 7,5, 3 2 / 6 119 FF -16 DRH 1... 16 2, 36 8 / 12 1111 FF -16 DDH,... 15,8 36 8 / 12 1111 FF -32 DRH 2... 32, 52 6 1 / 2 1157 FF -32 DDH,8... 3 1,6 52 6 1 / 2 1187 Microlectra bv. Augustapolder 12. 2992 SR Barendrecht. Netherlands. Tel 31()186-61629 Fax 31()186-6139 www.microlectra.nl info@microlectra.nl
Pressure switch with UL / CSA-approval IP 65 for mineral oils, water and air. Pressure connector: F (1/ 18 NPTF), silumin. Cable gland 1/2 1 NPTF is fitted as standard on these units. VDE 17/171/66, IEC 337-1, IEC 553-1 Control pressure switch FF -... with UL/CSA-approval adjustable (psi) adjustable (psi) (psi) pressure (psi) pressure (psi) (psi) FF-V1 DAF 1,5... 29,5... 27 1,5 29 58 7 / 22 1138 FF-V2 DAF 3... 58 1... 5 2 38 58 1 / 1139 FF-V3 DAF 7... 116 3... 19 7 35 58 29 / 87 1131 FF-V DAF 15... 232 6... 217 9 1 522 696 58 / 17 11311 FF-V5 DAF 29... 6 12... 35 17 29 769 928 15 / 29 11312 FF-V6 PAF 116... 87 58... 75 58 116 15 17 29 / 58 11299 FF-V7 PAF 232... 17 116... 158 116 232 29 38 29 / 116 113 FF-V8 PAF 35... 3625 23... 3277 17 38 58 725 15 / 29 1131 Technical data Rated operating current at 23 V AC 1 Rated operating current at 23 V AC 15 Rated operating current at 23 V DC 13 Permissible motor power 1 ~ 23 V Resistance to vibration 1 up to 1 Hz 16 A 6 A,1 A.55 kw g Protection acc. to DIN 5 /IEC 529 IP 5 with rubber grommet Protection acc. to DIN 5 /IEC 529 IP 65 with cable glands PG 13.5/M2 Ambient temperature range -2...+7 C Perm. medium temperature (...DAH, PAH) +7 C (...DAY) +5 C (...AAG) +2 C Repeatability < 2% FS
Media compatibility guide Medium name Chemical Formula Stainless stee l Perbunan Viton Plastic Acetone CH 3 COCH 3 X Acetylene HC = CH X X X X Air - X X X X Benzene Sulphur-free X X Butane C H 1 X X X X Butyl acetate CH 3 COOC H 9 X Butyl alcohol CH 3 -CH 2 -CH 2 -CH2-OH X Carbon dioxide CO 2 X X X X Carbonic acid H 2 CO 3 X X X X Chlorine Cl 2 X Crude oil - X X X X Diesel oil See fuels X X X X Ethyl acetate CH 3 OOOC 2 H 5 X Fuels Diesel oil, X X X X Leaded petrol X X X X Benzene X X Glycerine CH 2 OH-CHOH-CH2OH X X X X Glycol CH 2 OH-CH2OH X X X X Heating fuel oil See also oils X X X X Hydrogen H 2 X X X Inert gases - X Methanol CH3OH X Methyl chloride CH3Cl X Natural gas - X X X X Nitrogen N2 X X X X Oils Mineral X X X X Oils Vagetable X X X Oxygen O 2 X X Ozone - X X Perchlorethylene CCI 2 =CCL 2 X X Petrol All types X X Phenolic acid C 6 H 5(OH) X Propane C 3 H 8 X X X X Sulphar dioxide SO 2 X d Toluene (Metyl benzene) C 6 H 5 CH 3 X X Trichlorethene CHCI=CCI 2 X X Water Steam/vapor X X X Water Destilled, de-aerated X X X X Water Sea water X X X Xylene C 6 H (CH 3 ) 2 X X X = recommended, d = dry Accessories Order reference Description Weight Part No. (g) Throttles Throttle FF-2...32 Throttle for series FF-2 up to 32 3 1112 Throttle FF-6...25 Throttle for series FF-6 up to 25 3 1113 Glands H 12-11 Steel gauge fitting, G 3/8 - G 1/2 18 171 Gland M 2 Glands FF - 111 Nut M 2 Nut FF - 1117 Cover H FF Cover FF - 1111
Dimensions M 5,5 mm Throttle for FF -2 up to 32 approx. weight:,3 kg Order No.: 1112 mm 6 mm Throttle screw for FF -6 up to 25 approx. weight:,3 kg Order No.: 1113 G 3/8 G 1/2 Gauge fitting Steel, G 3/8 - G 1/2, Type: H 12-11 approx. weight:.18 kg Order No.: 171 Circuit diagrams Change-over contact Change-over contact with manual reset min. Change-over contact with manual reset max.
Pressure diagrams Above charts show the smallest adjustable differential. Example per figure FF -: If upper setting is at 3.25, lower setting can be adjusted between.7 and 3. (see arrows in the drawing). FF -2 FF - FF -8 FF -12 FF -16 FF -3 2 1,6 1,2,8, 8 7 6 5 3 2 1 16 12 8,,8 1,2 1,6 2 2 6 8 8 12 16 3,5 3 2,5 2 1,5 1,5 12 1 8 6 2 3 25 2 15 1 5 1 2 3 2 6 8 1 12 5 1 15 2 25 3 FF -32 FF -6 32 6 2 16 8 8 16 2 32 5 3 2 1 1 2 3 5 6
Pressure diagrams FF -12 FF -25 12 1 8 6 2 2 6 8 1 12 25 2 15 1 5 5 1 15 2 25 Microlectra bv. Augustapolder 12. 2992 SR Barendrecht. Netherlands. Tel 31()186-61629 Fax 31()186-6139 www.microlectra.nl info@microlectra.nl