Included Elactrodg tteotdlor OMRON O0R-20L4 Conductive Level Controller 61F-GP-N8 Compact Plug-in Level Controllers for Single or Two-point Level Control of Conductive Materials (Liquids and Solids) @ Wide range of models: long-distance, high and low-sensitivity, and two-wired types available. M@ 24/100/110/120/200/220/230/240 VAC operation possible. m@ Easy installation on DIN track. @ Low-voltage (AC) electrodes. Red LED operation indicator provided. @ Conforms to EMC and LVD Directives. @ UL/CSA approved. Ordering Information Model Number Legend: 61F-GP-N8_] 1 2 3 1. Plug-in Type 2. Compact 8-pin Type Applications None: General-purpose type L: Long-distance type H: High-sensitivity type (reverse acting) HY: High-sensitivity type (standard acting) D: Low-sensitivity type R: Two-wired type61F-GP-N8 = Accessories (Order Separately) Selection Guide for Electrode Holders and Separators Electrode Holders OMRON 61F-GP-N8 Selection Guide for Electrodes, Connecting, and Lock Nuts Applications For city water and When mounting space For low specific liquids. Used for sew- | When resistance to other general-use is limited. Special 3-pole | age, sea water, etc., having a low spe- | high pressure is re- electrodes. Easy-to- | holder of small size and _| cific resistance. In sewage use, elec- quired. Ideal for use replace separate light weight. Ideal for trode holders must be installed 10 to in tanks where tem- versions facilitate soft drink vendors, etc., | 20 cm apart from one another. For perature or pressure maintenance of elec- | where only limited acids, alkalis and sea water, electrode | 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 Flange 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 surface of the electrode holder) No. of 1 |~ -- BF-1 BS-1 electrodes 3 | PS-3S PS-31 _ = Electrode Separators No. of electrodes Model FO3-14 1P 3 FO03-14 3P Applicable liquids Material Models for individual electrode assembly components Electrode (1m long) Connecting nut Lock nut Madel Indication Model Inscription Model Inscription mark . Purified city water, | Equivalent | F03-01 SUS201 | 1 line FOQ3-02 SUS201 | - F03-03 SUS201 | - industrial water, to SUS 304 sewage {AISI-304) Purified city water, | SUS316 F03-01 SUS316 | 2 lines F03-02 SUS316 | 6 FQ3-03 SUS316 16 industrial water, (AIS1-316) 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-N8 61F-GP-N8L 2KM 61F-GP-N8H 61F-GP-N8D 61F-GP-N8R (for 2 km) 61F-GP-N8HY 61F-GP-N8L 4KM (see note 1) (for 4 km) Controlling materials and operating For control of ardi- nary purified water For control of ordi- nary purified water For control of liq- uids with high spe- For control of liq- uids with low spe- For control of ordi- 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 kQ) 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 valtage 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 omRON 61F-GP-N8 Model/items General-purpose Long-distance High-sensitivity Low-sensitivity Two-wired Controiler Controllers Controllers Controller Controller 61F-GP-N8 61F-GP-N8L 2KM 61F-GP-N8H 61F-GP-N8D 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 Approx.0 to4kQ | Approx. 0 to 1.3kQ Approx. 15k to Approx. 0 to 1.3kQ Approx. 0 to 2 kQ resistance (for 2 km) 70 kQ Approx. 0 to 0.5 kQ | (see note 3) (for 4 km) interelectrode release Approx. 15 k to Approx. 4k to @ 2 | Approx. 300 k to Approx. 4k to @ 9 | Approx. 15k to resistance a QO (for 2 km) wo Q aw Q Approx. 0.5 k to wo Q (for 4 km) Response time Operate: 80 ms max. Release: 160 ms max. Cable length 1 km max. 2 km max. 50 m max. 1 km max. 800 m max. (see note 2) 4 km 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 (see note 3) 100 MQ max. (at 500 VDC) 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. N8HY energizes when there is water present across the electrodes. The relay in the 61F-GP-N8H de-energizes when there is water present across the electrodes, whereas the relay in the 61F-GP- 2. The length when using completely-insulated, 600-V, 3-conductor (0.75 mm?) 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 vaiues between power terminals and terminals and contact terminals, and between electrode terminals and contact terminals. 4. Possible to use with 10 kQ or less, however, this may cause reset failure. m Internal Circuit Diagrams 61F-GP-N8/-N8L/-N8D/-N8SHY 61F-GP-N8H Power Power supply 24Vv supply 24 Control circuit Note: 24 V for the 61F-GP-N8HY. 61F-GP-N8R Power supply 24V electrode terminals, between power Conwol circuit $4 Ta Te Th Connections 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 draps 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 omrRon 61F-GP-N8 200-VAC power supply 61F-GP-N8& RST C 8 1 cca ; 2yv} Control circuit JU {See note 1 \{ below.) vin | L tbat | Contactor (See note 2 oc below.) Ty J J J] tyr M Pp i KH Reservoir Soe ae Hl Note: 1. The diagram shows the connections for water supply. When draining, change the connection from terminal 2 to terminal 3. 2. The earth terminal must be earthed.61F-GP-N8 OMRON 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 ta 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 high-level 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 voitage 90 V +20 VDC impulse withstand voltage 200,000 V (1 x 40 us) 6,000 A (1 x 40 us) Impulse withstand current Internal Connections 61F-03B 61F-048 > Ee 1 Es Es Ea 1 (3) (5) (2) @ 4) m 6 2 OM&a ORORORG) th WE 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. Long distance 61F-03B tal f Ground 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 omrRon 61F-GP-N8 Dimensions Note: All units are in millimeters unless otherwise indicated. _ 61F-GP 49.4 $-+4 +_ = NB an > he 38 a i I PFO83A-E m Electrode Holders PS-3S tia. rubber {efenivedia 48138) PS-38/-3SR PS-4S/-4SR PS-5S/-5SR bushing (inner) 80 PS-31 Oust preventive rubber cap (optional) Note: BF-1 20 Screw Holes Mounting Holes Used with caupling Used with mounting bracket 65-dia. hole \ Ne) PF 1/2 Parallel thread 38.5 1 32 7p1 Mounting Holes Electrode / Rubber Gy sUS304 po-3 Packing M3 (see 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. Terminal bott Cast iron 7 SUS201 (M6) Ly Two M5 x 25 mounting | Nut (M6) screws 26-dia. hole 48 allay ian = so 48 33. ~~] = 20 dia. f Two, 6-dia. holes 18 17 + 23-4 ~ (49) [72 ~~_+}61F-GP-N8 omron S1F-GP-Ne BS-1 Terminal bolt Width across flats: 20 Two M4 SUs304 (M4) P=0.7 M78 P=07 = 24 dia. Nut (iron) 1 M18 P=1.5 50 101 = Electrode Separators F03-14 1P (for Single Pole) | be T . a = Connecting Sockets Track Mounted Socket PF083A-E ight, M3.5 x7 . sone scr z 7202 Terminal Arrangement/ 5 Two, 4.2-dia Internal Connections b WO) noes (Top View) 910 S2max. o}2 Soy 8 25 dia. oo ojo D VIQ & 4 = las /+ 33 [= 41 max. -~ Back Connecting Socket PLO8 Terminal arrangement/ Internal Connections (Bottom View) 16 L [ Two, 2-dia. holes 30dia. + \ 39 Approx. 20.5 (fine screw thread) F03-14 3P (for Three Poles) | je 41 dia. a Mounting Holes Two, M4 or 4.5-dia, holes Got Mounting Holes Two, 3.5-dia. or M3 Controller mounting holes Two, 3.5-dia. or M3 4 socket mounting holes |61F-GP-N8 omRON 61F-GP-N8 @ Holding Brackets To mount the 61F-GP-N8 Conductive Level Controller on the PFQ83A Track Mounted Socket, use the PFC-N8 Mounting Brack- ets attached to the Socket as an accessory. PFC-N8 ae 4 Approx. 80 a3 4 10.3 = Surge Suppressor Unit 61F-03B 61F-04B Q 61F-038 an 61F-048 34 Precautions = How to Mount Electrodes Connecting Electrodes to Electrode Holders Electrode holder Clamp screw 3. Tighten the electrode with Connecting nut the two clamp s . 1. Spin a lock nut and a spring washer onto the electrade. Spring washer | ] 4, Secure the connecting ro i ot nut by tightening the lock i Rut and spring washer, Lock nut 2. Fuily fit the electrode into the Electrod connecting nut attached to the ectrade electrode hoker. Connecting One Electrode to Another Electrode Lock nut 2. Fully fit the Spring washer electrode into the connecting nut Connecting nut attached to the NN p electrode holder. 3. Tighten the electrode with Spring washe ey the two clamp screws, 4. Secure the connecting nut by tightening the lock oe Poa 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 cald drink dispensers, ice makers, water chillers, bulk milk tanks, etc. Dispensing of liquids by volume. Indication of liquid buildup due to filter blockages. * Poliution/foul water detection for rivers, drains, etc. Alarm control warning of abnormal or dangerously high or iow levels. = Application When using electrades in sea water or sewage, provide a sufficient interval (normally 1m) between the electrodes. If the sufficient inter- val cannot be provided, empioy a low-sensitivity-type Floatiess 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 1m, use a Separator at each joint of two electrodes so as to prevent the elec- trodes from contacting one anather. 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 electrade to E1, the medium electrode to E2, and the long electrode to E3. Make E3 at least SO mm tonger than E2, ay Min 50mm Im Im 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 fiq- 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 kQ-erm when the Controller employs a PS-3S electrode holder with the elec- trade(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 2to5kQ-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 kN-cm Low-sensitivity type Distilled water 100 kQ-cm or less High-sensitivity type Over 100 kQ-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 OMRON Corporation Industrial Devices and Components Division H.Q. Supervisory Control Devices Division 28th FI., Crystal Tower Bidg. 1-2-27, Shiromi, Chuo-ku, Osaka 540 Japan Phone: 81-8-949-6035 Fax: 81-6-949-6069 In the interest of product improvement, specifications are subject to change without notice. Printed in Japan 1297-2M (1097)