AOD ZOU OMRON Conductive Level Controller 61 F-GP-N8_ Compact Plug-in Level Controllers for Single or Two-point Level Control of Conductive Materials (Liquids and Solids) mM Wide range of models: long-distance, high and low-sensitivity, and two-wired types available. @ 24/100/110/120/200/220/230/240 VAC operation possible. @ Easy installation on DIN track. @ Low-voltage (AC) electrodes. @ Red LED operation indicator provided. @ Conforms to EMC and LVD Directives. mM UL/CSA approved. Ordering Information Model Number Legend: 61F-GP-N8_ 1. Plug-in Type 2. Compact 8-pin Type Applications None: General-purpose type L: H: HY: D: R: Long-distance type High-sensitivity type (reverse acting) High-sensitivity type (standard acting) Low-sensitivity type Two-wired type61F-GP-N8 @ Accessories (Order Separately) Selection Guide for Electrode Holders and Separators Electrode Holders oOmMRON 61F-GP-N8 Applications For city water and other general-use electrodes. Easy-to- replace separate versions facilitate maintenance of elec- When mounting space is limited. Special 3-pole holder of small size and light weight. Ideal for soft drink vendors, etc., where only limited For low specific liquids. Used for sew- age, Sea water, etc., having a low spe- cific resistance. In sewage use, elec- trode holders must be installed 10 to 20 cm apart from one another. For acids, alkalis and sea water, electrode When resistance to high pressure is re- quired. Ideal for use in tanks where tem- perature or pressure inside the tank is trodes. space is available. holders may be as much as 1 meter high, e.g. 250C apart to operate properly. Mounting style Flange Screw Fiange Screw Insulator material | Phenol resin Phenol resin Ceramics Teflon Max. temperature | 70C 150C (without water drips or vapor on | 250C (without water the surface of the electrode holder} drips or vapor on the surtace of the electrode holder) No. of 1 ]--- -- BF-1 BS-1 electrodes 3. PS-38 PS-31 a Electrode Separators No. of electrodes Model F03-14 1P 3 F03-14 3P Selection Guide for Electrodes, Connecting, and Lock Nuts Applicable liquids Material Models for individual electrode assembly components Electrode (1m long) Connecting nut Lock nut Model Indication Model Inscription Model inscription mark Purified city water, | Equivalent | F03-01 SUS201 | 1 line F03-02 SUS201 | - F03-03 SUS201 | --- industrial water, to SUS 304 sewage (AISI-304) Purified city water, | SUS316 FO3-01 SUS316 | 2 lines F03-02 SUS316 [6 F03-03 SUS316 | 6 industrial water, (AISI-316) sewage, dilute alka- line solution Specifications Model/Items General-purpose Long-distance High-sensitivity Low-sensitivity Two-wired Controller Controllers Controllers Controller Controller 61F-GP-N& 61F-GP-N8L 2KM 61F-GP-N8H 61F-GP-N8D 61F-GP-N8R (for 2 km} 61F-GP-N8HY 61F-GP-N&L 4KM (see note 1) (for 4 km) Controlling materials For control of ordi- For control of ordi- For control of liq- For control of liq- For control of ordi- and operating nary purified water {nary purified water | uids with high spe- | uids with low spe- | nary purified water conditions or sewage water in cases where the | cific resistance cific resistance or sewage water distance between such as distilled such as salt water, | used in combina- sewage pumps and | water sewage water, acid | tion with two-wired- water tanks or be- chemicals, alkali type electrode tween receiver chemicals holder (incorporat- tanks and supply ing a resistor of tanks is long or 6.8 k2) where remote con- trol is required. Supply voltage 24, 100, 110, 120, 200, 220, 230 or 240 VAC; 50/60 Hz Operating voltage range | 85% to 110% of rated voltage Interelectrode voltage 8 VAC 24 VAC 8 VAC interelectrode current Approx. 1 mA AC max. Approx. Approx. 1 mA AC max. 0.4 MAAC max.61F-GP-N8 omrRon 61F-GP-N8 Model/Items General-purpose Long-distance High-sensitivity Low-sensitivity Two-wired Controller Controllers Controllers Controller Controller 61F-GP-N& 61F-GP-N8L 2KM 61F-GP-N8H 61F-GP-N8&D 61F-GP-N8R (for 2 km) 61F-GP-N8HY 61F-GP-N8L 4KM (see note 1) (for 4 km) Power consumption Approx. 3.5 VA max. Interelectrode operate resistance Approx. 0 to 4 kQ Approx. 0 to 1.3 kQ2 (for 2 km) Approx. 0 to 0.5 k@ (for 4 km) Approx. 15 kQ2 to 70 kQ (see note 3) Approx. 0 to 1.3 ka Approx. 0 to 2 kQ interelectrode release Approx. 15 k to Approx. 4k to % @ | Approx. 300 k to Approx. 4k to x @ | Approx. 15 k to resistance ~Q (for 2 km) oo we Q Approx. 0.5 k to x ( (for 4 km) Response time Operate: 80 ms max. Release: 160 ms max. Cable length 1 km max. 2km max. 50 m max. 1 km max. 800 m max. (see note 2) 4km max. Control output 1 A, 250 VAC (Inductive load: cos = 0.4) 3 A, 250 VAC (Resistive load) Ambient temperature Operating: 10C to 55C Ambient humidity Operating: 45% to 85% RH Insulation resistance 100 M& max. (at 500 VDC) (see note 3) Dielectric strength 2000 VAC, 50/60 Hz for 1 min. (see note 4) Life expectancy Electrical: 100,000 operations min. Mechanical:5,000,000 operations min. Note: 1. The relay in the 61F-GP-N8H de-energizes when there is water present across the electrodes, whereas the relay in the 61F-GP- N8HY energizes when there is water present across the electrodes. 2. The length when using completely insulated, 600-V, 3-conductor (0.75 mm2) cabtire cables. Usable cable lengths will become shorter as the cable diameter or number of conductors becomes larger. 3. The insulation resistance and dielectric strength indicate values between power terminals and electrode terminals, between power terminals and contact terminals, and between electrode terminals and contact terminals. 4. Possible to use with 10 k@2 or less, however, this may cause reset failure. B Internal Circuit Diagrams 61F-GP-N8/-N8L/-N8D/-N8HY Power supply 24V 8 Control circuit | a 8 V (see note) e Ez Ea Note: Connections 61F-GP-N&H Power supply ee) Ta Tc To 24 V for the 61F-GP-N8HY. 24 Control circuit u O O Ta Te Tho 61F-GP-N8R Power supply 24V Je u bod Ta Te Th Automatic Water Supply and Drainage Control 1. Water Supply Connect electromagnetic switch coil terminal A to terminal 2. The pump stops when the water level reaches E1 and starts when the water level drops below E2. 2. Drainage when the water level drops below E2. Connect the electromagnetic switch coil terminal A to terminal 3. @ The pump starts when the water level reaches E1 and stops61F-GP-N8 omrROoNn 61F-GP-N8 200-VAC power supply 61F-GP-N8 RST J a 3 MCCB u Control circuit JU (See note 1 *. . below.) / J of 5 ae Act SLEMP | contactor (See note 2 | anenOSn an oe LyX] & Note: 1. The diagram shows the connections for water supply. When draining, change the connection frorn terminal 2 to terminal 3. 2. The earth terminal must be earthed.61F-GP-N8 omrROoNn 61F-GP-N8 Operation The Conductive Level Controller consists of a plug-in controller con- nected to a set of stainless steel probes. These are cut to length and inserted vertically into the liquid. A low voltage is applied between these probes and the earth probe (or tank, if it is electrically conduc- tive). The water provides a current between the earth probe and the high4evel probe. The output relay in the Controller is energized when the water level reaches the high-level probe and de-energized when the water level falls below it. Surge Suppressor Unit (61F-03B/04B) A high-capacity protective device is available which protects 61F-series Floatless Level Controllers against faults arising from electrical surges (such as indirect strokes of lightning) when the Controllers are employed in elevated water tanks or in high-altitude locations. Specifications Discharge start voltage 90 V +20 VDC Impulse withstand voltage 200,000 V (1 x 40 us) Impulse withstand current {6,000 A (1 x 40 us) Internal Connections 61F-038 61F-04B Es : Eq Es E2 E1 G3) (s) () OXOZORO 6 Oo @ @ GQ) @) @) GO) @) @ @& i + Precautions 1. Mount the Surge Suppressor Unit as close to the Controller as possible. 2. When grounding the Surge Suppressor Unit in the vicinity of the Controller, connect the ground side of the Surge Suppressor Unit to electrode E3. OOO |G g Long distance 3 61F-03B pL Ground 2 a . For two-point control a low-level probe is used as well. In this case the relay does not de-energize until the water level falls below the low-level probe. Using the low-level probe allows a wide differential between switching a pump on and off, and can avoid excessive pump operation during tank emptying or filling. If this differential is not required, the low-level probe need not be connected. 3. When connecting the Surge Suppressor Unit, wire as shown in the following example (with three electrodes). @ Ei 61F-03B Ground Ground Connection Sockets PF113A-E Track-mounted Socket PL11 Back-connecting Socket61F-GP-N8 omron 61F-GP-N8& Dimensions Note: All units are in millimeters uniess otherwise indicated. | @ Electrode Holders PS-3S o-dia, uber (offectveda. 6136) PS-3S/-35R PS-4S/-4SR PS-5S/-5SR bushing (inner) pees Le Mounting Holes Screw Holes (i TAy Used with coupling Z Used with mounting bracket 66-dia. hole Ps-31 pr? Paralie! thread Mounting Holes Electrade , SUS304 M3 (see note} 29.5 dia. Dust preventive rubber cap (optional) Note: Standard holder construction includes three integral 300-mm-long elec- trodes. However, a model having 1,000-mm-long electrodes is avail- able on request. BF-1 Terminal bolt Cast iron SUS201 (M6} Two MS x 25 ; . mounting \ Screws 26-da. hole . . 48 - 3 20dia ~ Two, 6-dia. hales 661F-GP-N8 omrRon 61F-GP-N8 BS-1 Width across flats: 20 SuSa04 ni poy Mie poor os . P=15 Se P24 dia. A Nut (iron) = 12-439 M18 P=1.5 @ Electrode Separators F03-14 1P (for Single Pole) 6.5 dia. m= Connecting Sockets Track Mounted Socket PFO83A-E Eignt, M3.5 x7 sems Screws Se D TA fe 44 max 94 Back Connecting Socket PLO8 50.5 max. {fine screw thread) 50 51 101 F03-14 3P (for Three Poles) Three, 7 dia. oa ea), fe 41 dra. o| Terminal Arrangement/ Mounting Holes Internal Connections (Top View) yes Two, 4.2-dia. holes 8 265 dia. Two, M4 or 4.5-dia. Roles tt 3.5 Terminal arrangement/ Internal Connections (Bottom View) Mounting Holes Two, 3.5-da, or M3 Controlier mounting holes Two, 2-dia. hales . 30 dia. 4 i 31-dia. o>: TI 161 Two, 3.5-dia. or M3 socket mounting holes Approx. 20.561F-GP-N8 omrRONn 61F-GP-N8& @ Holding Brackets To mount the 61F-GP-N8 Conductive Level Controller on the PF083A Track Mounted Socket, use the PFC-N8 Mounting Brack- ets attached to the Socket as an accessory. PFC-N8& = Surge Suppressor Unit 61F-03B 61F-04B Precautions # How to Mount Electrodes Connecting Electrodes to Electrode Holders Electrode holder Clamp screw 3. Tighten the electrode with G tingnut ~~ onmecung 9 P the two clamp screws. 1. Spin a lock nut and a spring washer onto the electrode. - Spring washer { | 4. Secure the connecting , | nut by tightening the lock ro J nut and spring washer. Lock nut ~ 2. Fully fit the electrods into the Electrode comnecting nut attached fo the electrode holder. Connecting One Electrode to Another Electrode Lock nut 2. Fully fit the Spring washer electrode into the . comecting nut Connecting nut attached to the electrode holder. 3. Tighten the electrode with the two clamp screws. 4. Secure the connecting | nut by tightening the lock ro ty nut and spring washer. LJ 1. Spin a lock nut and a spring washer onto the electrode.61F-GP-N8 omrRon 61F-GP-N8 Application Examples Level control in tanks, reservoirs, sewage plants, underground wells, mixing plants etc. Level control for element protection in pipes, channels, and irrigation systems. @ Flow detection in pipes, channels, and irrigation systems. Ice bank control in cold drink dispensers, ice makers, water chillers, bulk milk tanks, etc. Dispensing of liquids by volume. Indication of liquid buildup due to filter blockages. @ Pollution/foul water detection for rivers, drains, etc. Alarm control warning of abnormal or dangerously high or jow levels. @ Application When using electrodes in sea water or sewage, provide a sufficient interval (normally 1m) between the electrodes. If the sufficient inter- val cannot be provided, employ a low-sensifivity-type Floatless Lev- el Controller. When taping one of the electrodes to prevent it from contacting the other electrodes in water, do not tape the electrode entirely but leave at least 100 mm of its end uncovered. When the required length of the electrode is more than 1 m, use a separator at each joint of two electrodes so as to prevent the elec- trodes from contacting one another. Note: Avoid use of the separators in dust-containing liquids. Usually, electrodes are used in a set of three: long, medium, and short. Connect the short electrode to E1, the medium electrode to E2, and the long electrode to E3. Make E3 at least 50 mm longer than E2. Min 50mm Electrodes are in actual contact with the liquid. Standard electrodes are made of stainless steel and usable in purified water, sea water, sewage, acid (except acetic acid, sulfuric acid, etc.) and alkaline liq- uids, although they may corrode depending upon the temperature and working conditions. Note that the 61F-GP-N8 Conductive Level Controller is capable of controlling liquids with specific resistances of up to 30 k{@2-cm when the Controller employs a PS-3S electrode holder with the elec- trode(s) submerged to a depth of 30 mm max. Kind of water Specific Applicable type resistance City water 5 to 10 kQ-cm Standard type Well water 2 to 5 kQ-cm Standard type Industrial water [5 to 15 kQ-cm Standard type Rainwater 15 to 25 kQ-cm Standard type Sea water 0.03 kQ-cm Low-sensitivity type Sewage 0.5 to 2 kQ2-cm Low-sensitivity type Distilled water | 100 kQ2-cm orless | High-sensitivity type Over 100 kQ2-cm Consult OMRON ALL DIMENSIONS SHOWN ARE iN MILLIMETERS. To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527. Cat. No. F43-E1-1A In the interest of product improvement, specifications are subject to change without notice. OMRON Corporation Industrial Devices and Components Division H.Q. Supervisory Control Devices Division 28th FI., Crystal Tower Bldg. 1-2-27, Shiromi, Chuo-ku, Qsaka 540 Japan Phone: 81-6-949-6035 Fax: 81-6-949-6069 Printed in Japan 1297-2M (1097)