General industrial

Submersible

Extreme Environment Displacement Transducer

Temposonics magnetostrictive transducers

ACT LVDT Displacement Transducer Stainless steel High accuracy High cycle life Infinite resolution Linearity (best) ?.1% F.S. Lowest range ?2.5mm Highest range ?70mm Smallest length/height 133mm Smallest width/diameter 20.6mm D5 & D6 LVDT Displacement Transducer High cycle life Stainless steel High accuracy Miniature Infinite resolution Linearity (best) ?.1% F.S. Lowest range ?.25mm Highest range ?2.5mm Smallest length/height 49mm Smallest width/diameter 9.5mm 　 DCTH Series DC to DC LVDT Displacement Transducer High accuracy High resolution Voltage / 4-20mA output High cycle life Stainless steel Linearity (best) ?.1% F.S. Lowest range ?.5mm Highest range ?70mm Smallest length/height 64mm Smallest width/diameter 20.6mm GT Precision LVDT Gauging Transducer Very high accuracy Precision linear bearings Miniature High cycle life Stainless steel Infinite resolution Linearity (best) ?.1% F.S. Lowest range ?.5mm Highest range ?mm Smallest length/height 26mm Smallest width/diameter 8.0mm

Stainless steel High accuracy High cycle life Infinite resolution RDP LVDT How it Works    Data sheet (172kb)

These transducers are for displacement / position measurement. They make an accurate position measurement of the movement of the armature (the sliding part) relative to the body of the displacement transducer. This transducer uses the Linear Variable Differential Transformer (LVDT) principle which means that it is probably the most robust and reliable position sensor type available. The strength of the LVDT sensor's principle is that there is no electrical contact across the transducer position sensing element which for the user of the sensor means clean data, infinite resolution and a very long life. This series of displacement transducer is available as either an unguided, captive or spring return version. LVDT transducers require external signal conditioning as detailed in the 'Electronics' section of this website.

Unguided version.
	On our unguided LVDTs the armature assembly is a separate component, to make a measurement the user must guide the armature inside the body without touching the sides. Unguided position measurement transducers are appropriate where external guidance is available and give truly non-contact operation
A = 9mm ID = 6.8mm D1 = 20.6mm D3 = 4.75mm D4 = 5.97mm TF = M5x0.8
Type	Range	Linearity error (% F.S.)	L	X	Total weight	Armature weight	TF	Over-Travel	Sensitivity (nom)
								Inward over-travel
ACT500	?2.5mm	<?.5/?.25/?.1	127mm	43mm	170g	17g	15mm	16mm	0.7V/V
ACT1000	?5mm	<?.5/?.25/?.1	155mm	68mm	227g	23g	15mm	22mm	0.9V/V
ACT2000	?0mm	<?.5/?.25/?.1	270mm	81mm	320g	37g	15mm	16mm	1.5V/V
ACT3000	?5mm	<?.5/?.25/?.1	380mm	120mm	454g	55g	15mm	29mm	1.5V/V
ACT4000	?00mm	<?.5/?.25/?.1	427mm	132mm	568g	71g	15mm	16mm	3.2V/V
ACT6000	?50mm	<?.5/?.25	617mm	183mm	824g	100g	15mm	16mm	2.4V/V
ACT8000	?00mm	<?.5/?.25	808mm	259mm	1.2kg	140g	29mm	27mm	1.5V/V

Captive guided version.
	Our captive guided displacement transducer has bearings to guide the armature inside the measurement sensor. Captive LVDTs are for position measurement applications where guidance may be poor and end bearings may be required.
A = 24mm D1 = 20.6mm TR = M5x0.8, 11mm TF = M5x0.8
Type	Range	Linearity error (% F.S.)	L	X	D3	Total weight	TF	Over-Travel		Sensitivity (nom)
								Inward over-travel	Outward over-travel
ACT500C	?2.5mm	<?.5/?.25/?.1	152mm	38mm	4.75mm	284g	15mm	10mm	12mm	0.7V/V
ACT1000C	?5mm	<?.5/?.25/?.1	180mm	63mm	4.75mm	340g	15mm	13mm	10mm	0.9V/V
ACT2000C	?0mm	<?.5/?.25/?.1	295mm	76mm	4.75mm	511g	15mm	10mm	14mm	1.5V/V
ACT3000C	?5mm	<?.5/?.25/?.1	406mm	114mm	4.75mm	653g	15mm	24mm	15mm	1.5V/V
ACT4000C	?00mm	<?.5/?.25/?.1	452mm	127mm	4.75mm	710g	15mm	8mm	14mm	3.2V/V
ACT6000C	?50mm	<?.5/?.25	643mm	178mm	4.75mm	1.0kg	15mm	12mm	17mm	2.4V/V
ACT8000C	?00mm	<?.5/?.25	833mm	254mm	4.75mm	1.4kg	32mm	22mm	25mm	1.5V/V
ACT10000C	?50mm	<?.5/?.25	1030mm	305mm	4.75mm	1.6kg	27mm	34mm	35mm	2.0V/V
ACT15000C	?75mm	<?.5	1435mm	406mm	4.75mm	2.1kg	19mm	13mm	13mm	3.2V/V
ACT18500C	?70mm	<?.5	1702mm	508mm	6.00mm	2.5kg	27mm	5mm	33mm	3.6V/V

Spring return version.
	Our spring displacement transducer has bearings to guide the armature inside the measurement sensor and a spring which pushes the armature to the fully out position. Spring return LVDTs are appropriate where it is not possible to connect the transducer armature to the moving component being measured.
A = 9mm D1 = 20.6mm D3 = 4.75mm
Type	Range	Linearity error (% F.S.)	L	X	Total weight	Spring force (nom)		Over-Travel		Sensitivity (nom)
						Spring force at X	Spring rate	Inward over-travel	Outward over-travel
ACT500A	?2.5mm	<?.5/?.25/?.1	133mm	38mm	184g	1.3N	0.2N/cm	1mm	13mm	0.7V/V
ACT1000A	?5mm	<?.5/?.25/?.1	161mm	63mm	227g	2.0N	0.3N/cm	3mm	10mm	0.9V/V
ACT2000A	?0mm	<?.5/?.25/?.1	276mm	75mm	398g	1.8N	0.2N/cm	8mm	14mm	1.5V/V
ACT3000A	?5mm	<?.5/?.25/?.1	387mm	114mm	483g	6.0N	0.4N/cm	15mm	15mm	1.5V/V

Options and accessories TM0315 Operating temperature range (maximum) = 200癈  ( ?00mm maximum ) Rod-end bearings for captive-guided position transducers Alternative probe tips for LVDTs Mounting block Electronics

ACT Captive Guided LVDT Transducer

Rear Mount	Front Mount
M5 x 0.8 female, 11mm deep	M5 x 0.8, 15mm long

The RDP Electronics ACT series are an LVDT transducer which makes them probably the most robust position sensor available. LVDT displacement transducer units have no contact across the position sensor element ensuring very long life. The captive guided LVDT displacement transducer units have a male thread on the armature (the moving part of the measurement sensor) and a female thread on the body. The armature of the LVDT displacement transducer is guided in low friction bearings and is appropriate for measurement applications where it may be necessary to mount the transducer at both ends. This type of LVDT transducer is also appropriate for measurement of the size of components, on a production line for example.

RDP Electronics have a mounting block available for all 20.6mm diameter LVDT transducer packages, and Spherical End Bearings for captive type transducers.

RDP can offer a full range of LVDT displacement transducer signal conditioning for this and our wiser range of position sensor units.

Due to the RDP Electronics policy of on-going development, specifications may change without notice.
Any modification may affect the specification of our equipment.