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Data Sheet A 01 142

Data Sheet A 01 142
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Type: A 01 142 Data sheet LTDS04EN | Page 1 of 2 Top mounted level switches for level alarm or pump control applications Nominal pressure PN 16 max. 16 bar to 300°C Operating temperature 0 to 300°C Density of the liquid > Pump controlmin. 0.5 kg/dm3 > Alarmmin. 0.5 kg/dm3 Operating differential12 to 4340 mm Wetside materialstainless steel (CrNiMo) Housing material seawater resistant die cast alu minium Flange dimensionssquare 92 x 92 mm, PCD 92 mm Switch element Microswitch SPDT with silver Safety Integrity Level (SIL) SIL 1 11 Connection diagram 14 Setting the switching differential Vertical rods 1. Both rods and the supplied nipple (L = 10 mm) have to be welded together as shown. Both weld seams must be smoothed, so the float can glide freely. Installation 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 in- 2. termediate flange with an inside diameter of min. 125 mm of flange modules acc. to EN/DIN DN125 or ANSI DN5" should be used. We recommend, that the rod should be guided loosely at the lower end. 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. For alarm operation (1 switch point) Only the lower collar is fixed on the for (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. Quality Assurance ■ Bachofen AG is certified acc. to ISO 9001. Certificates ■ Material certificates acc. to EN 10204-2.2 and EN 10204 3.1 ■ Test records of hydraulic pressure tests and functional tests Data Sheet LTDS04EN English, October 2015 With reservation of technical modification.

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Type: A 01 142 Data sheet LTDS04EN | Page 2 of 2 Options ■ Dual SPDT microswitches (SIL 2) ■ Microswitches with gold plated contacts ■ Self checking proximity switches acc. to NAMUR ■ Enclosure IP67, or IP68 for submersible applications ■ 380 VAC, 5 A 440 VDC, 0.3 A (type: AE26) ■ Pneumatic switches ON/OFF ■ High and low temperature versions ■ Cable entry with 3/4" NPT internal thread ■ Switch housing: - chromated - stainless steel (CrNiMo) - epoxy painted ■ Flange modules: - acc. to ANSI, EN/DIN, BS & JIS Marine approvals and registrations of Trimod Besta level switches SIL...

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Data Sheet A 01 142 2Pages

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Data Sheet A 01 142
2Pages