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TRITON CONTROLS - FLOAT SWITCHES
LR03 - NON MERCURY LEVEL REGULATORS
O 50
O9 OPTIONAL WEIGHT
Float Switches are inexpensive and efficient liquid level detectors. They are simple to install, and designed for trouble free operation over a long life. The LR03 is a plastic float switch moulded to either a PVC or synthetic rubber 3 core cable. Actuation is via a roller ball and micro-switch arrangement within the switch thereby eliminating all heavy metals from this version. Construction The unit comprises three major components : 1. The float chamber houses the micro-switch arrangement, totally sealed within a polypropylene casing, with a single pole double throw action. 2. The three-cored cable, connected to the micro-switch assembly inside the float chamber, is sheathed in CPE (chlorinated polyethylene) synthetic rubber or PVC. This cable is supplied in three standard lengths, 5 metres, 10 metres and 20 metres 5% of the length quoted. Other cable lengths are available to order. 3. The optional stabilizing weight may be fixed at any point on the cable using the rubber "O" ring supplied. The weight is sealed within a moulded polypropylene housing. In order to provide total positional security in lubricants and similar liquids, a nylon cable-tie is provided for attachment to the cable beneath the weight
WIDTH 40mm
CABLE LENGTH
57
TRITON CONTROLS LTD
103
Mounting Whilst no hard and fast rules apply to the mounting of these units, the lead should be supported in an enclosed vessel, and in an open vessel it is advantageous to clip the lead to the side, especially if excessive turbulence is experienced. To obviate the effects of rapid switching conditions that would result if such turbulence is experienced, it is advantageous to use a maintaining circuit which both safeguards the micro-switch and cuts out any chatter in the starters of associated pumps etc
81
TRITON CONTROLS LTD., UNIT 2, RANDOLPH INDUSTRIAL ESTATE, EVENWOOD, BISHOP AUCKLAND, Co. DURHAM. DL14 9SJ. ENGLAND. TEL +44 (0) 1388 833000 FAX +44 (0) 1388 833680 Web : www.tritoncontrols.co.uk Email : info@tritoncontrols.co.uk
LR03 - PLASTIC FLOAT SWITCH
Method of Operation
BLACK BLUE BROWN PVC OR CPE SYNTHETIC RUBBER CABLE
MOULDED CABLE SEAL MICROSWITCH LEVER ANTI-VIBRATION MOULDING STEEL ROLLER BALL
The micro-switch assembly inside the float, axially mounted in line with the weight, changes contacts according to the float's position, as in the diagram below. Therefore as the liquid level drops or rises slowly, a pump or flow control suitably connected, can be switched in or out to maintain an average level of the liquid. By connecting only one side of the switch, the unit can be also used to fill or empty the tank as required.
Dimensions, in mm, do not take into consideration any lateral swing of the cable.
Contact rating:
250V 15A, non-inductive. 250V 10A, inductive. 1.3 HP
CONTACT BETWEEN BROWN AND BLACK LEADS IS MADE 45
NOTE: Local Regulations may limit the voltage. Max. temperature 70 C
Max. submerged depth 20 metres Compressive Strength
280 MIN. 330 MIN. OPERATIVE DEPTH
482 KN/m (70 lbf/in)
Operational in specific gravities from 0.9 to 1.3
45 CONTACT BETWEEN BROWN AND BLUE LEADS IS MADE
A comprehensive list of chemical resistances for the LR03 float switch is available on request. LR03-Weight 275 g
OPERATING POINTS ARE APPROXIMATE ONLY
Connection diagram for automatically emptying tank
BLACK LEAD BROWN LEAD BLACK LEAD COIL FOR MAX. 240V (AC)
Connection diagram for automatically refilling tank
BROWN LEAD BLUE LEAD BLUE LEAD COIL FOR MAX. 250V (AC)
N L3 L2 L1 MAINS SUPPLY A B C
N L3 L2 L1 MAINS SUPPLY A B C
TO PUMP MOTOR
TO PUMP MOTOR
When ordering please specify part numbers. Type Part Number Weight (Approx)
5 metre PVC cable LR03-L05M-PVC 10 metre PVC cable LR03-L10M-PVC 20 metre PVC cable LR03-L20M-PVC 0.6 Kg 1.1 Kg 2.1 Kg
Type
Part Number
Weight (Approx)
0.6 Kg 1.1 Kg 2.1 Kg
5 metre CPE cable LR03-L05M-CPE 10 metre CPE cable LR03-L10M-CPE 20 metre CPE cable LR03-L20M-CPE
TR I N C O N TR O LS LTD TO
NO M W EG HT, 1 KG 100. m m 0
52. m m 0
C LAM PI G TO C ABLE N BY M 8 N U T & BO LT
26. m m 0
BO TH H ALVES I EN TI AL D C
DI ENSI M ONS
mm
TO LERANCE
0. 4
DRAW N 1
TI TLE
041200
2
3
4
B O LT- N O C A ST I O N R C A B LE W EI H T G
DRG No
5
6
7
8
D ATE
LR 03- 2 W
04- 00 12-
TR I N C O N TR O LS LTD . U N I 2,R A N D O LPH I D U STR I L ESTA TE, TO , T N A EV EN W O O D ,BI O P A U C K LA N D ,C o.D U R H A M .D L14 9SJ.EN G LA N D . SH TEL +44 ( 1388 833000 FA X +44 ( 1388 833680 0) 0) W eb :www.rioncont sco. Em ai :i o@ t ioncont sco. tt rol. uk l nf rt rol. uk

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