User manual OMRON 61F-GP-N8 DATASHEET
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Manual abstract: user guide OMRON 61F-GP-N8DATASHEET
Detailed instructions for use are in the User's Guide.
[. . . ] Compact 8-pin Type
Ordering Information
List of Models
Application General-purpose type Long-distance type High-sensitivity type Low-sensitivity type Two-wired type 2 km 4 km Model number 61F-GP-N8 61F-GP-N8L 2KM 61F-GP-N8L 4KM 61F-GP-N8H 61F-GP-N8D 61F-GP-N8R
Conductive Level Controller
61F-GP-N8
E-5
Level Controllers
Accessories (Order Separately)
Selection Guide for Electrode Holders and Separators
Electrode Holders
Applications For city water and other general-use electrodes. Easy-to-replace separate versions facilitate maintenance of electrodes. Ideal for soft drink vendors, etc. , where only limited space is available. In sewage use, electrode holders must be installed 10 to 20 cm apart from one another. [. . . ] 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.
200-VAC power supply
2. Drainage · Connect the electromagnetic switch coil terminal A to terminal 3. · The pump starts when the water level reaches E1 and stops when the water level drops below E2.
61F-GP-N8
MCCB
0V 8V 24 V Control circuit
200 V
(See note 1 below. )
Contactor (See note 2 below. ) THR Tank
PS-3S Stop Start
Reservoir
Note: 1. The earth terminal must be earthed.
E-8
Conductive Level Controller 61F-GP-N8
Operation
The Conductive Level Controller consists of a plug-in controller connected to a set of stainless steel probes. A low voltage is applied between these probes and the earth probe (or tank, if it is electrically conductive). 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. 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.
Surge Suppressor Unit (61F-03B/04B)
A high-capacity protective device is available which protects 61Fseries 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. When connecting the Surge Suppressor Unit, wire as shown in the following example (with three electrodes).
Discharge start voltage Impulse withstand voltage Impulse withstand current
90 V ±20 VDC 200, 000 V (1 x 40 µs) 6, 000 A (1 x 40 µs)
61F-03B
Internal Connections
61F-03B 61F-04B
Ground Ground E1
E2 E3
Connection Sockets
PF113A-E Track-mounted Socket PL11 Back-connecting Socket
Precautions
1. Mount the Surge Suppressor Unit as close to the Controller as possible. 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 Ground
Conductive Level Controller
61F-GP-N8
E-9
Level Controllers
Specifications
Dimensions
Note: All units are in millimeters unless otherwise indicated.
61F-GPN8
91
PF083A-E
Electrode Holders
PS-@S
9-dia. rubber bushing (inner) PF2 parallel thread (effective dia. : 58. 135)
PS-3S/-3SR
34 dia.
E2
PS-4S/-4SR
E3 E2
PS-5S/-5SR
E3 E2
80
92 E3 13 40 26 20 80
E1 E4
E1 E4
E1
Mounting Holes
Used with coupling
PF2
Screw Holes
Used with mounting bracket
65-dia. hole
PS-31
PF1/2 Parallel thread
11
38. 5 32 7 12
11 dia.
Mounting Holes
4 dia. Electrode SUS304 Dust preventive rubber cap (optional)
3
PF1/2
Rubber packing (see note)
26
M3
29. 5 dia.
Note: Standard holder construction includes three integral 300-mm-long electrodes. However, a model having 1, 000-mm-long electrodes is available on request.
BF-1
Terminal bolt SUS201 (M6) Nut (M6)
60 33 48 dia. [. . . ] If the sufficient interval cannot be provided, employ a low-sensitivity-type Floatless Level 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 electrodes from contacting one another. Usually, electrodes are used in a set of three: long, medium, and short. [. . . ]
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