OMRON 61F-GP-N8 User Manual

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.

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. UL/CSA approved.

RC

Ordering Information

Model Number Legend:

61F-GP-N8j

1

2

3

1.Plug-in Type

2.Compact 8-pin Type

3.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 type

Accessories (Order Separately)

Selection Guide for Electrode Holders and Separators

Electrode Holders

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. 250°C
								apart to operate properly.
Mounting style			Flange				Screw	Flange	Screw
Insulator material			Phenol resin				Phenol resin	Ceramics	Teflon
Max. temperature			70°C					150°C (without water drips or vapor on	250°C (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
1				F03-14 1P
3				F03-14 3P

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61F-GP-N8 61F-GP-N8

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	F03-01 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-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	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 kΩ)
			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 mA AC max.
Power consumption	Approx. 3.5 VA max.
Interelectrode operate	Approx. 0 to 4 kΩ		Approx. 0 to 1.3 kΩ	Approx. 15 kΩ to	Approx. 0 to 1.3 kΩ	Approx. 0 to 2 kΩ
resistance			(for 2 km)	70 kΩ
			Approx. 0 to 0.5 kΩ	(see note 3)
			(for 4 km)
Interelectrode release	Approx. 15 k to		Approx. 4 k to ∞ Ω	Approx. 300 k to	Approx. 4 k to ∞ Ω	Approx. 15 k to
resistance	∞ Ω		(for 2 km)	∞ Ω		∞ Ω
			Approx. 0.5 k to
			∞ Ω (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: cosφ = 0.4)
	3 A, 250 VAC (Resistive load)
Ambient temperature	Operating:	--10°C to 55°C
Ambient humidity	Operating:	45% to 85% RH
Insulation resistance	100 MΩ 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.

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61F-GP-N8 61F-GP-N8

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 kΩ or less, however, this may cause reset failure.

Internal Circuit Diagrams

61F-GP-N8/-N8L/-N8D/-N8HY	61F-GP-N8H		61F-GP-N8R
Power	Power		Power
	supply		supply 24 V
supply 24 V		24 V
Control circuit		Control circuit	Control circuit
8 V (see note)		24 V	8 V

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Note: 24 V for the 61F-GP-N8HY.

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 drops below E2.

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.

200-VAC power supply	61F-GP-N8

MCCB

0 V 8 V

200 V	24 V	Control circuit

(See note 1 below.)

Contactor	(See note 2
	below.)	PS-3S
THR		Stop
		Start
	Tank
	Reservoir

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.

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