LVDT sensor DOI

Pressure-resistant cylinder displacement transducer with perforated flange and integrated electronics for installation in the cylinder base with internal sensor and plunger. The displacement transducer with a housing diameter of 20mm is pressure-resistant up to 320bar as standard and has a coil unit completely encapsulated in the housing with a fully symmetrical coil design according to the LVDT full bridge circuit. This achieves good linearity and high temperature stability with low temperature drift. The electronics in 2-wire technology is supplied with ± 20...30V and provides an output signal of 4...20mA.

Special versions with modified flange dimensions and in other pressure classes are possible according to customer requirements.

		DOI 25	DOI 50	DOI 100	DOI 150	DOI 200	DOI 250	DOI 300	DOI 400	DOI 500	DOI 600	DOI 800	DOI 1000
Nominal stroke	mm	±12,5	±25	±50	±75	±100	±125	±150	±200	±250	±300	±400	±500
Max. mechanical stroke	mm	30	55	105	160	210	260	320	420	520	630	830	1030
Dimension A	mm	40	55	80	105	130	155	180	230	280	340	440	540
Mounting length B	mm	60	100	140	220	300	380	480	600	730	860	1120	1400
Transducer weight (approx.)	g	1000	1050	1100	1200	1350	1450	1600	1800	2000	2200	2600	3000
Core weight (approx.)	g	12	14	16	20	25	28	30	35	40	50	65	80

		DOI 25 ... 400
Supply		20 ... 30 V / 40 mA, stabilised
Output signal		4 ... 20 mA
Allowable load		max. 400 Ω
Static resolution		virtually infinite
Cut-off frequency		100 Hz
Linearity error*		0,5 % F.S.O. Option: 0,25 %
Temperature coefficient of zero		±0,1 % / 10 K
Temperature coefficient of span		±0,2 % / 10 K
Allowable pressure		operation pressure: 320 bar, test pressure: 450 bar
Operating temperature		0 °C ... +60 °C
Protection class according to DIN 40050		IP 65