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MICROSONIC® Thru-beam Sensors Model SM100 Series

MICROSONIC® Thru-beam Sensors Model SM100 Series
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MICROSONIC® Thru-beam Sensors Model SM100 Series

Product catalog summary

Overview

The MICROSONIC® SM100 Series Thru-beam Sensors are robust ultrasonic sensors designed for reliable object detection in demanding industrial environments. Featuring stainless steel housings and continuous-wave ultrasonic technology, these sensors offer sensing ranges up to 1,829 mm (72 inches) and fast response times suitable for high-speed applications.

Key Features

  • Stainless steel, self-contained units with NEMA 4X (indoor) and IP67 protection standards
  • Resistance to food splashes, caustic cleaners, humidity, dust, and ambient noise
  • No need for sensitivity adjustments
  • Sensing ranges from 381 mm (15") to 1,829 mm (72")
  • Detects objects as small as 6.4 mm (1/4") diameter; can detect holes as small as 3 mm (1/8")
  • Response times between 0.6 ms and 4 ms depending on model
  • Compatible with 12 to 24 VDC power supplies and common logic control systems

Operation Principle

The sensors operate as a transmitter-receiver pair aligned on the same axis. The transmitter emits a continuous 180 kHz ultrasonic beam detected by the receiver. When an object interrupts the beam, the receiver output changes state. The beam expands approximately 10° total, requiring precise alignment for reliable detection of small objects. Parallel axis mounting can improve detection of objects smaller than 13 mm (0.5").

Transmitter and Receiver Combinations

The SM100 series offers multiple models varying in sensing range, power supply versions (12-24 VDC or 15 VDC), and connection styles including cable and quick-disconnect Amphenol connectors (standard and watertight). This variety enables tailored sensor selection for specific applications.

Mounting

Adjustable mounting brackets, such as the Model AC201 stainless steel right-angle bracket, are recommended to ensure precise alignment of transmitter and receiver on the same axis.

Electrical Wiring and Connections

  • Standard cable length: 3 m (10 ft) with foil shield and PVC jacket
  • Quick-disconnect options with Amphenol connectors, including watertight versions
  • Recommended cable extensions: Belden No. 8423 (receiver) and No. 9154 (transmitter), max length 152 m (500 ft)
  • Output types: NPN sinking or PNP sourcing, max 100 mA load current
  • Receiver includes a red LED indicator lit when the beam is received

Dimensions

Compact stainless steel housings with threaded mounting interfaces (1 1/4-18 EF or 5/8-24 EF). Quick-disconnect models use 7/8-16 mini connectors. Detailed dimensions support installation planning.

General Specifications

  • Sensing ranges: 381 mm (15"), 508 mm (20"), 635 mm (25"), 1016 mm (40"), 1829 mm (72")
  • Minimum detectable object size varies from 13 mm (0.5") at short range to 25 mm (1") at max range
  • Repeatability: typically 0.79 mm (0.031")
  • Power supply: 12 to 24 VDC ±10%, regulated
  • Current consumption: max 60 mA per sensor set (excluding load)
  • Power consumption: max 1.2 W at 15 VDC per set
  • Response time: 0.6 ms or 4 ms depending on model
  • Operating temperature: 0° to 60°C; storage temperature: -40° to 100°C
  • Operating humidity: 100%
  • Protection ratings: NEMA 4X (indoor), IP67 for cable style and watertight connectors; NEMA 1 for standard Amphenol connectors
  • Chemical resistance: resistant to most acids, bases, food products; optional polypropylene transducer face for enhanced chemical and steam resistance

Construction

  • Housing: stainless steel, shock and vibration resistant
  • Transducer face: standard Buna rubber with sealed fiberglass; optional polypropylene for chemical/steam resistance
  • Power cable: nontoxic PVC jacket
  • LED indicator lens: polycarbonate on receiver

Accessories

  • Connector cables for transmitter and receiver (Amphenol and watertight versions)
  • Cable grip for cable-style sensors
  • Model AC201 stainless steel mounting bracket with adjustment slots

Model Selection

A comprehensive chart lists transmitter and receiver model numbers, power versions, connection styles, NEMA ratings, and sensing ranges to assist in selecting the appropriate sensor pair for specific applications.

Critical Considerations and Best Practices

  • Ensure precise alignment of transmitter and receiver on the same axis or use parallel axis mounting to improve detection of small objects
  • Consider environmental conditions; MICROSONIC® sensors maintain performance under contamination where others fail
  • Use recommended cable types and lengths to maintain signal integrity
  • Choose connector style (cable, quick-disconnect, watertight) based on installation environment
  • Verify power supply voltage and current compatibility

Summary

This document provides a detailed technical overview and selection guide for MICROSONIC® SM100 Series Thru-beam Sensors. It covers electrical, mechanical, and sensing characteristics of transmitter and receiver models, enabling informed selection based on power supply, connection type, sensing range, response time, output configuration, and environmental protection requirements.

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Catalog excerpts

MICROSONIC® Thru-beam Sensors Model SM100 Series -1

Industry proven, these MICROSONIC® sensors increase "uptime" with reliable, thru-beam sensing in harsh, high- speed environments rectly attributed to the harsh en- vironments in which sensors operate today, Hyde Park offers broad application solutions with this industry-proven line of ultra- sonic thru-beam sensors. First Hyde Park product line with tens of thousands of units continu- ing to perform a variety of thru- beam sensing functions Using the world's leading ultra- sonic sensing technology, the sensors perform precise object detection. Of objects from trans- parent containers to metal parts ameter at speeds in excess of Unlike photoelectrics, these stainless steel sensors are vir- tually unaffected by splashing food, caustic cleaning solutions, frequent high-pressure wash- downs, humidity, changing light conditions or colors, dust, and ambient noise. The rugged sen- sors need no maintenance and require no sensitivity adjust- ments to compensate for incon- sistent product materials. Response times range from 4 nal make these sensors directly compatible with many program- mable logic controllers, comput- ers, and other logic control sys- that consist of an ultra-high-fre- quency transmitter and receiver positioned opposite each other, illustrated below, at a distance operation, the transmitter sends a continuous ultrasonic beam ceiver. When an object of any material or shape passes be- ceiver and breaks the beam, object presence is detected and switches. Or, when a hole as small as 3 mm (1/8 inch) diam- eter allows the beam to pass • Self contained • Survives harsh With all circuitry compactly sealed in the stainless steel transmitter and receiver probes, boast a narrow, constanthigh- frequency sonic beam for high sensing resolution. The thru-beam sensing mode sors on the same axis opposite each other as shown in Figure 1 .The distance (range) between the transmitter face and receiver tremely important for the reli- able detection of objects, par- ticularly small ones. As the fig- ure also shows, the width of the transmitted sound beam initially expands at a rate of 10 degrees (5 degrees each side of the com- ceiver increases. This means that if the distance between the

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MICROSONIC® Thru-beam Sensors Model SM100 Series -2

great and the object is too small, it is possible for the beam to "wrap around" the object enough to not cause the re- ceiver output to switch, as shown in Fig- Therefore, reliable detection of 13 mm (0.5") inch wide or smaller objects is achieved when the objects are al- lowed to pass near the face of either the transmitter or receiver. An alterna- tive approach is to position the trans- mitter and receiver on parallel axes, as shown in Figure 3, so as to reduce the amount of beam reaching the receiver. Where sensing distances are ad- versely affected as the environment becomes more contaminated,...

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MICROSONIC® Thru-beam Sensors Model SM100 Series -3

Electrical Wiring Cable Style** Transmitter Models, Standard Cable Models, Standard Cable Length 3 m (10') Quick-disconnect (Amphenol) Style** Transmitter Models with Model AC100 Amphenol, 2-conductor, 3 m Receiver Models with Model AC150 Amphenol, 3-conductor, 3 m (10) Mating Connector Cable: SM170,175,182,186,188,190,193C, * Operates only on 15 VDC power ** Use Belden Cable No. 8423 and No. 9154 to extend receiver and transmitter cable length, respectively. Maximum recommended cable length is 152 m (500). (watertight) Style Transmitter Models with Model AC107 Mating Connector Cable SM138WTC,...

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MICROSONIC® Thru-beam Sensors Model SM100 Series -4

Dimensions Cable Style Transmitter Models: SM121, 126, 139, 141, 145, 147 2.875 7.30 cm 1/2' PTS CABLE END 10' LONG OR CONNECTOR 1.375 3.50 HEX 1.125 2.86 cm 1 1/4-18 THREADS 2.875 7.30 cm 1.125 2.86 cm SENSING FACE LED INDICATOR ON RECEIVER 1/2 NPT 1 1/4-18 THREADS NUT, XA438 (ONE FURNISHED) NUT, XA438 (ONE FURNISHED) CABLE END 10' LONG OR CONNECTOR Receiver Models: SM171, 176, 187, 189, 191, 193, 195, 198, 199, 251, CS101 Quick-disconnect (Amphenol) Style Transmitter Models: SM120, 125, 128, 138, 140, 146 Variable-power potentiometer on Model SM128 only 3.575 9.08 cm 2.880 7.30 cm 3.575 9.08...

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MICROSONIC® Thru-beam Sensors Model SM100 Series -5

General Specifications Minimum-size Detection: Power Requirements Supply Voltage: 12 to 24 VDC ± 10%, regulated Maximum on state voltage 100 mA @ 0.2 V Receiver red LED "on" when beam is received Response Time Transmitter: None Red LED: Illuminated when sonic energy is received, regardless of output state. Cable Style Models: Transmitter: 305 cm (10'), 20 AWG, foil shield, Receiver: 305 cm (10'), 22 AWG, foil shield, Connector Style Models: Amphenol (nonwatertight) quick-disconnect style 305 cm (10'), 20 AWG, foil shield, lead-free, 305 cm (10'), 22 AWG, foil shield, lead-free, Watertight (WTC)...

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MICROSONIC® Thru-beam Sensors Model SM100 Series -6

Transmitter Selection Chart MICROSONIC Thru-Beam

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MICROSONIC® Thru-beam Sensors Model SM100 Series -7

Transmitter Selection Chart MICROSONIC Thru-Beam • = Most commonly stocked sensors All possible sensor configurations are not listed here.

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MICROSONIC® Thru-beam Sensors Model SM100 Series -8

Receiver Selection Chart MICROSONIC Thru-Beam

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MICROSONIC® Thru-beam Sensors Model SM100 Series -9

Receiver Selection Chart SM100 Series (cont.) SM252-WTC SM138-WTC SM140-WTC SM146-WTC CS101 SM147 12-24VDC 12-24VDC 12-24VDC 12-24VDC Quick Disconnect Quick Disconnect Quick Disconnect 305cm(10') Cable 4X, 4X, 4X, 4X, IP67 Stainless IP67 Stainless IP67 Stainless IP67 Stainless 1829mm(72" ) 635mm(25") 1016mm(40") 1016mm(40") On 4ms, Off 4ms On 4ms, Off 4ms On 4ms, Off 4ms On 4ms, Off 4ms Remarks (Outputs N.O. unless noted) Response time Sensing Range Transmitter/ Receiver Housing NEMA Rating* Connection Style Power Version Reveiver Model No. Transmitter Model No. MICROSONIC® Thru-Beam NPN sinking,...

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