Active Speed Sensors - Variable Reluctance

Active, or amplified sensors with digital output offer a low cost solution for interfacing directly to data acquisition systems. These sensors integrate a preamplifier/signal conditioner within the sensor housing and offer the advantages of excellent noise immunity and greater transmission capability.

Input power supply requirements cover the most popular ranges for both commercial and industrial use. The output frequency of these sensors has a square pulse waveform (digital) that directly relates to the number of turbine blades, gear teeth, etc. that have been sensed. These pulses, in turn, can be correlated to determine flow rate, RPM, or velocity.

Installation Considerations

Type

Magnetic (inductive or variable reluctance) or RF (modulated carrier)

Warranty

Unconditional one (1) year warranty if used within specifications.

Physical Features

Body material: 300 series stainless steel
Encapsulation: epoxy potting or hermetically sealed, welded construction
High Shock and Vibration resistance - MIL-STD-202G METHOD 214A, Test Condition H

Input Power

8 to 30 VDC, 10 mA max. @ no load
Reverse polarity protected

Pulse Output Options

Open Collector
TTL/CMOS; fan-out of 5 TTL/CMOS loads
0-10 VDC square wave (requires 15-30 VDC input power)

Interconnection Options

Three (3) pin MIL-C-5015 type connector with gold plated pins; mates with MS3106-10SL-3S; other connector types upon request.
Pigtail with wires or cables.
NPT threaded body with wire or cable pigtail for explosion proof environments.

Temperature Range

Operating: -40˚C to +85˚C
Storage: -65˚C to +125˚C

NOTE:
Units that operate up to +125˚C are also available

Pin/Pigtail Connections

Pin A (Red): Input Power (+)
Pin B (Black): Common (-)
Pin C (White): Pulse Output (+)

Airgap

Up to 0.140" dependent on target geometry and sensor construction.

Approvals

CE compliant to EMC Directive 2004/108/EC for use in residential, commercial, light industrial and heavy industrial environments.

Variable Reluctance Active Speed Sensors

Model Number	Mounting Thread (A)	Thread Length (B)	Overall Length (C)	Tip (Length/Dia.) (D)	Output (Pulse Range)
DM-010	5/8x18	.875	3.6	.031/.100	open collector
DM-002	5/8x18	.875	3.6	.031/.100	0-5 VDC
DM-011	5/8x18	.875	3.6	.031/.100	0-10 VDC
DM-013	11/16x24	.875	3.6	.075/.105	open collector
DM-001	11/16x24	.875	3.6	.075/.105	0-5 VDC
DM-012	11/16x24	.875	3.6	.075/.105	0-10 VDC

Notes:
Dimensions in inches
Specifications +/- 10%
Mounting threads UNF-2A

In addition to the standard models shown above, active VR and RF speed sensors are available in custom lengths, diameters, configurations, and mounting threads. Custom operating specifications (output options, etc.) are available, as well as options such as pigtail leads or NPT threading. Additional sensor customization options

We provide custom sensors on a regular basis and are happy to help develop a solution for your application, or a replacement sensor for an existing application. Please contact our engineering department at eng@motionsensors.com or 252-331-2080 to discuss your application requirements.

Atex Certified: Custom & Standard Speed Sensors for Intrinsically Safe applications (also approved by CSA w/NRTL/C)