Technical Specification: Housing : Steel Aluminium, weatherproof , powder coated , integral with the probe Cable Entry : In cast Al Housing 2XPG 13 Ambinent temperate : 0°C to + 60°C Power consumption : 0.3 VA Mains Voltage : 18 to30 VDC or 65 to 265 VAC std. Output : PNP or NONC and DPDT in cast Al Housing Switching delay : Continuous adjustable from 1 to 20 sec. probe free or probe covered (in cast Al version). Safety operation : Field selected switch over for (In Cast Al Version) min or max PNP Output Switch status display : Green LED shows Normal, Red LED shows alarm. FORK (SENSING PROBE): Mounting : Screwed BSP (standard) or flanged (optional) Sense : Fork, Stainless steel Extension : Pipe (optional) in extended type Length : 200 mm up to 3000 mm and as per application Operating Temp in : 150°C for the integral switching vessel unit.200°C optional Models: HARP 2010 :120hz frequency, weatherproof IP 67 cast Al housing with universal mains.18-30 V DC and 65 to 265 VAC. 1 DPDT relay output HARP 2020 : 120hz frequency, weatherproof IP 67 cast Al compact housing. PNP DC output. HARP 2030 : 120hz frequency, weatherproof IP 68 C steel Pipe housing. PNP DC output. HARP 2020 Ex. : 120hz frequency, weatherproof IP 65. Flameproof as per BIS standard vide CIMFRTcsRH642 DT 16tA2t20 (In PNP version) and PESO certificate no APHQMH1042738(P302245)