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LTDS02

LTDS02
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Data sheet LTDS02EN | page 1 of 2 1 switching point (alarm) Nominal pressure PN 16 acc. to EN/DIN Density of the liquid > Pump control min. 0.45 kg/dm3 > Alarm min. 0.30 kg/dirP Operating differential A 01 140: 12 to 1340 mm, A 01 141: 12 to 2840 mm Wetside material stainless steel (CrNiMo) Housing material seawater resistant die cast aluminium Flange dimensions square 92 x 92 mm, PCD 92 mm Switch element Microswitch SPDT with silver contacts Weight A 01 140: approx. 2,5 kg, A 01 141: approx. 2,7 kg Approvals ABS, BV, DNV, GL, LRS, RINA, RMRS Flange dimensions Setting the switching differential Installation 1. For pump control (2 switch points) The required differential is set by fixing the two stop collars in the appropriate positions on the rod. The counterweight has to be adjusted to compensate for the rod weight (without float), until the cross arm is balanced. The float slides up and down the rod with the liquid level and actuates the switch at the set position of the stop collars. The switch remains latched between the two positions, which are for applications such as pump control where the contactor coil would need to remain energized throughout the pumping cycle. Over open tanks or sumps on a bracket. On closed tanks on the manhole covery with the float mounted from the inside. In the absence of a manhole, i.e. the float can not be mounted from the inside, an inter-mediate flange with an inside diameter of min. 125 mm of flange modules acc. to EN/DIN DN125 or ANSI DN5" should be used. If turbulence occurs, the rod should be guided loosely at the lower end. 2. For alarm operation (1 switch point) Only the lower collar is fixed on the rod (below the float). Within the limit of the rod length, the height of the alarm point can be chosen as required. The counterweight has to be set, to outweigh the rod (without float). The alarm switching differential is 12 mm. Adjustment at factory The level switches are factory set for pump control. Distance X = 32 mm (Type 140), = 29 mm (Type 141). If the rods have to be shortened or the switch has to be used for alarm purposes, the position of the of the counter-weight has to be adjusted, as described on the back page. Certificates ■ Material certificates acc. to EN 10204-2.2 and EN 10204 3.1 ■ Test records of hydraulic pressure- and functional tests ■ Test records of material tests Data Sheet LTDS02EN English, October 2015 With reservation of technical modification.

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Data sheet LTDS02EN | page 2 of 2 Distance X for counterweight (see drawing on the front page) Switch types ...140 Switch types ...141 rod length pump control alarm P: Switch with pneumatic module E: Switch with electrical module *) Factory setting Options rod length pump control alarm ■ Dual SPDT microswitches (SIL 2) ■ Microswitches with gold plated contacts ■ Self checking proximity switches acc. to NAMUR ■ Enclosure IP67, or IP68 for submersible applications 5A/380 VAC 0.3A/440 VDC (type: AE26) ■ Explosion proof switches, PTB-approved ■ Pneumatic switches ON/OFF ■ High and low...

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LTDS02 2Pages

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LTDS02
2Pages