RLS-1000

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WIKA · Level measurement · Family RLS

Float switch

Name: Float switch
Brand: WIKA
SKU: RLS-1000

Robust, reliable and inexpensive float switch for level measurement of liquids in industrial applications, with reed contacts and permanent magnet.

Range

0.06…1.5 m

Output

SP1 · SP2

Accuracy

±3 mm

Protection

IP65

RoHSCEChina RoHS

Price

On request

Depends on configuration

Request a quote

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Description

The RLS-1000 is a robust, reliable and inexpensive float switch. Since the monitoring of levels as well as dry-run protection and overflow protection are cost-sensitive applications in the machine-building industry, a float switch is the ideal solution for many plants. The RLS-1000 reliably detects the level in vessels with water, oil, diesel or other liquids by means of a permanent magnet and frictionless reed contacts at max. 4 defined switch points and can be used in a medium temperature range from -30 to +150 °C [-22 to +302 °F].

The compact float switch is simple, convenient and fast to integrate, because it does not need to be calibrated or set during the installation. This greatly improves the ease of handling, especially in confined installation situations. Also, since its robust design makes it resistant to vibrations and shocks, maintenance costs are minimal

Fig. left: Angular connector, float from NBR Fig. right: Circular connector M12 x 1, float from stainless steel

Special features

Maximum reliability thanks to high-quality reed contacts
Very high variety and customer-specific solutions possible
Simple and fast installation

Identification

Model	RLS-1000
Product family	RLS
Subcategory	Float switch

Measuring range

Level ranges

0.06…1.5 m

Process conditions

Process connection	G 1/2, installation from outsideG 3/4, installation from outsideG 1, installation from outsideG 1 ½, installation from outsideG 2, installation from outsideFlange DN 50, form B per EN 1092-1 (DIN 2527), PN 16, installation from outsideG ⅛, installation from insideG ¼, installation from insideG ⅜, installation from insideG ½, installation from insideG 1/2G 3/4G 1G 1 ½G 2G ⅛ BG ¼ BG ⅜ BG ½ BFlange
Process temperature	−30…+150 °C
Max process pressure	40 bar
Measurement technology	float

Electrical characteristics

Output signal	SP1 · SP2 · SP3 · SP4
Electrical connection	Angular connector DIN EN 175301-803 A, Circular connector M12 x 1 (4-pin), Cable outlet, Connection housing 'standard', Connection housing 'compact'

Materials

Wetted parts material

Stainless steel 316Ti, Buna / NBR, PP, PA6.6

Operating environment

Ambient temperature	−30…+80 °C
IP rating	IP65

Certifications and approvals

Certifications

RoHSCEChina RoHS

Additional details

Datasheet languages

Tables from datasheet

Float switch, model RLS-1000

Measuring principle	Potential-free switching reed contacts are triggered by a magnet in the float.
Guide tube length L	60 ... 1,500 mm[2.5 ... 59 in], other lengths on request
Output signal	Up to 4 switch points, depending on the electrical connection: SP1, SP2, SP3, SP4
Switching function	Alternatively normally open (NO), normally closed (NC) or change-over (SPDT) contact - on rising level
Switch position	Specified in mm, starting from the upper sealing face (SP1 ... SP4) At the end of the guide tube ≈ 45 mm[≈ 1.8 in] cannot be used for switch positions.
Distance between switch points 1)	Minimum distance SP1 to the upper sealing face: 50 mm[2.0 in] Minimum distance between the switch points: 50 mm[2.0 in], for floats with outer ∅=44mm[1.7 in], 52 mm[2.0 in] 30 mm[1.2 in], for floats with outer ∅=18mm[0.7 in], 22 mm[0.9 in], 25 mm[1.0 in], 30 mm[1.2 in] Minimum distance with 3 switch points: 80 mm[3.1 in], either between SP1 and SP2 or SP2 and SP3 Minimum distance with 4 switch points: 80 mm[3.1 in], between SP2 and SP3
Switching power 2)	Floats with outer Normally open, normally closed: Change-over contact:	diameter ∅D=44mm[1.7 in], 52 mm[2.0 in] AC 230 V; 100 VA; 1 A; 50 ... 60 Hz DC 230 V; 50 W;0.5 A AC 230 V; 40 VA; 1 A; 50 ... 60 Hz DC 230 V; 20 W;0.5 A
	Floats with outer diameter ∅D=18mm[0.7 in], 22 mm[0.9 in], 25 mm[1.0 in], 30 mm[1.2 in]
	Normally open, normally closed:	AC 100 V; 10 VA; 0.5 A; 50 ... 60 Hz DC 100 V; 10 W;0.5 A
	Change-over contact:
		100 V; 5 VA; 0.25 A; 50 ... 60 Hz
	DC	AC	100 V; 5 W;0.25 A
Accuracy	±3 mmswitch point accuracy incl. hysteresis, non-repeatability
Mounting position	Vertical ±30°
Process connection	■ G1/2, installation from outside 3) ■ G3/4, installation from outside 4) ■ G1, installation from outside ■ G1½, installation from outside	■ G⅛, installation from inside 5) 6) ■ G¼, installation from inside 5) 6) ■ G⅜, installation from inside 5) ■ G½, installation from inside 5)
	steel	on page 3
	Case	Stainless steel 316Ti
Non-wetted
Material			■ Flange DN
	■ G2, installation from outside
	50, form B per EN 1092-1
	(DIN 2527), PN 16, installation from outside
	Process connection, guide tube Stainless Float See
	table
	table
Wetted			Electrical
			connection
			3
			temperatures
			°F]
			-30 …+80 °C [-22
			Medium
			-30 …+120
Permissible
			…+176 7) 9)
			°C [-22
	…+248	°F]
		on page
		8) 9)
		…+302 °F]
	°C
		[-22
	-30 …+150
		See

Electrical connections 1)	Max. switch point definition	Ingress protection per IEC/EN 60529 2)	Protection class	Material	Cable length
Angular connector DIN EN 175301-803 A 3) 4)	■ 2 NO/NC ■ 1 SPDT	IP65	II	PA	-
Circular connector M12 x 1 (4-pin) 4)	■ 3 NO/NC ■ 1 NO/NC + 1 SPDT	IP65	II	TPU, brass
Cable outlet 4)	■ 4 NO/NC ■ 4 SPDT	IP67	II	PVC	■ 2 m[6.5 ft] ■ 5 m[16.4 ft] ■ other
Cable outlet 4)	■ 4 NO/NC ■ 4 SPDT	IP67	II	PUR	lengths on request
Cable outlet 4)	■ 4 NO/NC ■ 2 NO/NC + 1 SPDT	IP67	II	Silicone
Cable outlet 'shipbuilding'	■ 4 NO/NC ■ 4 SPDT	IP67	II	Polyolefin
Connection housing 'standard' Dimensions: 75 x 80x57mm [3.0 x 3.1 x 2.2 in] For cable diameter: 5 ...10mm [0.2 ... 0.4 in]	■ 4 NO/NC ■ 4 SPDT	IP66	I	Case from aluminium, cable gland from polyamide	-
Connection housing 'compact' Dimensions: 58 x 64x36mm [2.3 x 2.5 x 1.4 in] For cable diameter: 5 ...10mm [0.2 ... 0.4 in]	■ 4 NO/NC ■ 2 NO/NC + 1 SPDT ■ 2 SPDT	IP66	II

Float	Form	Outer diameter∅D	Height H	Operating pressure	Medium temperature	Density	Material
	Cylinder 4) 7)	44 mm[1.7 in]	52 mm[2.0 in]	≤ 16 bar [≤ 232 psi]	-30 ...+150 °C [-22 ...+302 °F]	≥ 750 kg/m³ [46.8 lbs/ft³]	316Ti
H	Cylinder 5)	30 mm[1.2 in]	36 mm[1.4 in]	≤ 10 bar [≤ 145 psi]	-30 ...+120 °C [-22 ...+248 °F]	≥ 850 kg/m³ [53.1 lbs/ft³]	316Ti
∅D	Cylinder 5) 3)	25 mm[1.0 in]	17 mm[0.7 in]	≤ 16 bar [≤ 232 psi]	-30 ...+80 °C [-22 ...+176 °F]	≥ 750 kg/m³ [46.8 lbs/ft³]	Buna / NBR
	Cylinder 4) 6) 9)	25 mm[1.0 in]	23 mm[0.9 in]	≤ 4 bar [≤ 58.0 psi]	-25 ...+80 °C [-13 ...+176 °F]	≥ 700 kg/m³ [43.7 lbs/ft³]	PP
	Cylinder 4) 6) 9)	25 mm[1.0 in]	23 mm[0.9 in]	≤ 4 bar [≤ 58.0 psi]	-25 ...+80 °C [-13 ...+176 °F]	≥ 750 kg/m³ [46.8 lbs/ft³]	PA6.6
	Cylinder 5) 9)	22 mm[0.9 in]	29 mm[1.1 in]	≤ 16 bar [≤ 232 psi]	-30 ...+120 °C [-22 ...+248 °F]	≥ 850 kg/m³ [53.1 lbs/ft³]	316Ti
	Cylinder 4) 6) 9)	18 mm[0.7 in]	32 mm[1.3 in]	≤ 16 bar [≤ 232 psi]	-30 ...+80 °C [-22 ...+176 °F]	≥ 750 kg/m³ [46.8 lbs/ft³]	Buna / NBR
∅D H	Sphere 6) 7)	52 mm[2.0 in]	52 mm[2.0 in]	≤ 40 bar [≤ 580 psi]	-30 ...+150 °C [-22 ...+302 °F]	≥ 750 kg/m³ [46.8 lbs/ft³]	316Ti

Angular connector DIN EN 175301-803 A

	Normally open/normally closed (NO/NC)	Change-over contact (SPDT)
	2 switch points SP1 1 2 SP2 1 3	1 switch point SP1 1 2 3

View all (11)

Process connection	Dead band inmm
Outer diameter float ∅D	∅18mm [0.7 in]	∅22mm [0.9 in]	∅25mm [1.0 in]	∅25mm [1.0 in]	∅30mm [1.2 in]	∅44mm [1.7 in]	∅52mm [2.0 in]
Float height H	H 32mm [1.3 in]	H 29mm [1.1 in]	H 17mm [0.7 in]	H 23mm [0.9 in]	H 36mm [1.4 in]	H 52mm [2.0 in]	H 52mm [2.0 in]
G 1/2 (from outside)	35 mm[1.4 in]	-	-	-	-	-	-
G 3/4 (from outside)	35 mm[1.4 in]	35 mm[1.4 in]	-	-	-	-	-
G 1 (from outside)	35 mm[1.4 in]	35 mm[1.4 in]	25 mm[1.0 in]	35 mm[1.4 in]	35 mm[1.4 in]	-	-
G 1 ½(from outside)	-	-	25 mm[1.0 in]	-	35 mm[1.4 in]	45 mm[1.8 in]	-
G 2 (from outside)	-	-	25 mm[1.0 in]	-	40 mm[1.6 in]	50 mm[2.0 in]	50 mm[2.0 in]
Flange (from outside)	-	-	5 mm[0.2 in]	-	20 mm[0.8 in]	30 mm[1.2 in]	30 mm[1.2 in]
G ⅛ B (from inside)	15 mm[0.6 in]	20 mm[0.8 in]	15 mm[0.6 in]	20 mm[0.8 in]	30 mm[1.2 in]	-	-
G ¼ B (from inside)	20 mm[0.8 in]	25 mm[1.0 in]	20 mm[0.8 in]	25 mm[1.0 in]	35 mm[1.4 in]	40 mm[1.6 in]	40 mm[1.6 in]
G ⅜B(from inside)	20 mm[0.8 in]	25 mm[1.0 in]	20 mm[0.8 in]	25 mm[1.0 in]	35 mm[1.4 in]	40 mm[1.6 in]	40 mm[1.6 in]
G ½B(from inside)	20 mm[0.8 in]	25 mm[1.0 in]	20 mm[0.8 in]	25 mm[1.0 in]	35 mm[1.4 in]	45 mm[1.8 in]	45 mm[1.8 in]

G	L 1	Spanner width
G 1/2	15 mm[0.59 in]	27 mm[1.1 in]
G 3/4	15 mm[0.59 in]	31 mm[1.2 in]
G1	16 mm[0.63 in]	41 mm[1.6 in]
G1½	18 mm[0.71 in]	30 mm[1.2 in]
G2	20 mm[0.79 in]	36 mm[1.4 in]

G	L 1	Spanner width
G⅛B	12 mm[0.47 in]	14 mm[0.5 in]
G ¼ B	12 mm[0.47 in]	19 mm[0.7 in]
G⅜B	12 mm[0.47 in]	22 mm[0.9 in]
G½B	14 mm[0.55 in]	27 mm[1.1 in]

Circular connector M12 x 1 with moulded cable

Description	Temperature range	Cable diameter	Cable length	Order number
Straight version, cut to length, 4-pin, PUR cable, UL listed, IP67	-20 ...+80 °C [-4 ...+176 °F]	4.5 mm[0.18 in]	2 m[6.6 ft]	14086880
5 m[16.4 ft]	14086883
10 m[32.8 ft]	14086884
Angled version, cut to length, 4-pin, PUR cable, UL listed, IP67	-20 ...+80 °C [-4 ...+176 °F]	4.5 mm[0.18 in]	2 m[6.6 ft]	14086889
5 m[16.4 ft]	14086891
10 m[32.8 ft]	14086892

Logo	Description	Country
	EU declaration of conformity ■ Low voltage directive ■ RoHS directive	European Union
	DNV GL (option) 1) Ships, shipbuilding (e.g. offshore)	International

Logo	Description
-	China RoHS directive

Re- placed model	Current model	Description
EX-SR 10	RLS-4000	Float switch, stainless steel, terminal housing, ATEX approval
EX-SR 11	RLS-4000	Float switch, stainless steel, cable outlet, ATEX approval
EX-SR 13	RLS-4000	Compact float switch, stainless steel, terminal housing, ATEX approval
EX-SR 14	RLS-4000	Compact float switch, stainless steel, cable outlet, ATEX approval
EX-SR 20	RLS-4000	Compact angled float switch, stainless steel, cable outlet, ATEX approval
EX-SR 21	RLS-4000	Compact angled float switch, stainless steel, cable outlet, ATEX approval
SR 6	RLS-5000	Bilge float switch
SR 10	RLS-1000	Float switch, stainless steel, terminal housing
SR 11	RLS-1000	Float switch, stainless steel, cable outlet
SR 12	RLS-1000	Float switch, stainless steel, connector
SR 13	RLS-1000	Compact float switch, stainless steel, terminal housing
SR 14	RLS-1000	Compact float switch, stainless steel, cable outlet
SR 20	RLS-1000	Angled float switch, stainless steel, cable outlet
SR 30	RLS-2000	Float switch, plastic, terminal housing
SR 31	RLS-2000	Float switch, plastic, cable outlet
SR 32	RLS-2000	Float switch, plastic, connector
SR 33	RLS-2000	Angled float switch, plastic, cable outlet
SR 71	RLS-1000	Compact float switch, stainless steel, cable outlet
SR 80	RLS-6000	Suspended float switch, switch rod activated, reed switch
TN 210	RLS-3000	Float switch, stainless steel, terminal housing, integrated temperature switch
TN 211	RLS-3000	Float switch, stainless steel, cable outlet, integrated temperature switch
TN 230	RLS-3000	Float switch, stainless steel, terminal housing, integrated Pt100 temperature output signal
TN 231	RLS-3000	Float switch, stainless steel, cable outlet, integrated Pt100 temperature output signal

Float switch

Description

Special features

1 standard articles of family RLS