Amplified (Active) Speed Sensors

Digi-Pulse speed sensors combine high-sensitivity amplifiers with variable reluctance (VR) or modulated carrier transducers (RF). Unique features include near zero velocity (2 Hz) speed sensing, large air gap capability, and several choices of digital output. By combining the sensor and preamplifier in one unit, reductions in overall cost can be attained especially when preamplifier enclosures and installation labor are considered. Digi-Pulse sensors are available in both hermetically sealed and encapsulated models and can be customized to satisfy specific requirements. These sensors also have EU certification for emissions and immunity (CE mark) and comply with EMC directive 89/336/EEC for installation into any environment.

CUSTOM MODELS

In addition to our standard models, active amplified 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. See additional sensor customization options.

Active Speed Sensors

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; maximum OFF current 30 VDC, maximum ON current 400mA
  • 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.

Operating temperature: -40°C to +85°C
Storage temperature:  -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.

 
MODEL NUMBERMOUNTING THREAD (A)THREAD LENGTH (B)OVERALL LENGTH (C)TIP (Length/Dia.) (D)OUTPUT (Pulse Range)
DR-0145/8x18.8753.6Flush FrontOpen Collector
DR-0025/8x18.8753.6Flush Front0-5 VDC
DR-0135/8x18.8753.6Flush Front0-10 VDC
DR-007

11/16x24

.8753.6Flush FrontOpen Collector
DR-001

11/16x24

.8753.6Flush Front0-5 VDC
DR-003

11/16x24

.8753.6Flush Front0-10 VDC

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

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; maximum OFF current 30 VDC, maximum ON current 400mA
  • 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.

 
MODEL NUMBERMOUNTING THREAD (A)THREAD LENGTH (B)OVERALL LENGTH (C)TIP (Length/Dia.) (D)OUTPUT (Pulse Range)
DM-0105/8x18.8753.5.031/.100Open Collector
DM-0025/8x18.8753.5.031/.1000-5 VDC
DM-0115/8x18.8753.5.031/.1000-10 VDC
DM-1311/16X24.8753.6.075/.105Open Collector
DM-00111/16X24.8753.6.075/.1050-5 VDC
DM-00211/16X24.8753.6.075/.1050-10 VDC

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

Active VR Speed Sensors - EMI Susceptibility Hardened

DME Series

Motion Sensors DME series of active variable reluctance (VR) speed sensors are similar to our standard DM series amplified sensors. The DME series offers EMI (Electromagnetic Interference) susceptibility hardening and improved performance in environments with greater external electrical noise and disruptions. The DME series is equivalent to the Honeywell 584xx series while also offering CE compliance and additional pulse output offerings.

Specification Comparison with Motion Sensors DM Series

                                            DME Series                   DM Series
Input Power                         5 - 30 VDC                    8 - 30 VDC
Reverse Polarity                  Yes                                 Yes
Short Circuit Protection      No                                  Yes
Current Draw                       21mA @ 30VDC         30mA @ 30VDC
Frequency Response          10Hz - 10KHz              0Hz - 10KHz
Air Gap Capability              .118"*                            .140"*
CE Compliance                    Yes                                 Yes

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

INSTALLATION CONSIDERATIONS

Type
Variable Reluctance (Magnetic) with EMI susceptibility hardening

Physical Features

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

Input Power

  • 5 to 30 VDC, 25 mA max. @ 30VDC
  • Reverse polarity protected

Pulse Output Options
Guaranteed power on state at Logic 0

  • Supply Tracking
    Guaranteed power on state at Logic 0
    Logic 0:
    0.35 VDC Max @ 15VDC
    0.80 VDC Max @ 30 VDC
    Logic 1:
    (VS x RL)/(RL+2200)
    Open Collector
    Logic 0:
    0.35 VDC Max @ 15VDC
    0.80 VDC Max @ 30 VDC
    Logic 1:
    (VS x RL)/(RL+Y*)

*Y=value of external pullup resistor

  • TTL/CMOS: fan-out of 5 TTL/CMOS loads
    Logic 0:
    0.35 VDC Max @ 15VDC
    0.80 VDC Max @ 30 VDC
    Logic 1:
    5 VDC +/- 0.5 VDC
    0-10 VDC square wave (requires 10-30 VDC input power)
    Logic 0:
    0.35 VDC Max @ 15VDC
    0.80 VDC Max @ 30 VDC
    Logic 1:
    10 VDC +/- 1.0 VDC

Interconnection Options

  • Three (3) pin MIL-C-5015 type connector with gold plated pins; mates with MS3106-10SL-3S
  • M12x1 threaded 5 pin connector
  • Other connector types upon request
  • Pigtail with wires or cables.
    NPT threaded body with wire or cable pigtail

Temperature Range

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

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.

VR Standard Active Speed Sensors

MODEL NUMBERMOUNTING THREAD (A)THREAD LENGTH (B)OVERALL LENGTH (C)TIP (Lenth/Dia.) (D)OUTPUT (Pulse Range)
DME-115/8x18.8753.5Flush FrontOpen Collector
DME-215/8x18.8753.5Flush Front0-5 VDC
DME-315/8x18.8753.5Flush Front0-10 VDC

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