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OMRON Alarms/Buzzers（Terminal shape：Insertion Terminal）

OMRON offers products Alarms/Buzzers specified by Terminal shape Insertion Terminal from Electrical & Controls product category. There are a total of 1 items. Parts and equipment for controlling machines and electrical systems. Controllers and power supplies. OMRON products are available to order through MISUMI online 24 hours a day. Free shipping, no minimum order.

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Specification/Dimensions

Volume(dB)
40–60

50–70

60

68 to 80

68 to 85

70

70–95

75

80

85

87

88±10

90

95

96

102

110

116
Clear

Product Type
- Alarm / Buzzer Unit
- Other
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Rated Voltage(V)
- DC6V
- DC12V
- DC24V
- AC100V
- Other
- DC12~24V
- AC100~240V
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Shape
- Round
- Silique type
- Square shape
- Other
Images

Clear

Sound
- Continuous
- Intermittent
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Types of sound
- Peak
- Boost
- Voice/music
- Other
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Volume adjustment
- Available
- NA
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Terminal shape
- Solder terminal
- Screw terminal
- Insertion Terminal
- Other
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Dimension width(mm)
17.9

18

18 mm

24

25.8

25.9

26

30

35

41

41.8

50

72

72 mm

75

80

90

120

140 mm

166.5

205

266
Drawing

Clear

Protection function (IP/drip-proof, etc.)
- Available
- NA
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Representative Standard
- PSE
- CE
- UL
- TUV
- CSA
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Dimension length(mm)
17.9

18

20

24

25.8

25.9

30

37

41

41.8

43

44

45

50

60

75

80

90

112.4

120

136

145

149.5
Drawing

Clear

Dimension thickness(mm)
10

16

19.9

28.5

34

38.5

50.5

52

54

54.5

58.6

59.5

60

61.5

62.8

63

63.5

64

65

68.5

70.5

78

79.5

83.5

89

94.7

95

95.5

100

101

153

198.2
Drawing

Clear

Brand	(0) (0) D.S.TECHNOLOGY (0) ESCO (0) FUJI ELECTRIC (0) IDEC (0) MIRAI INDUSTRY (0) OMRON (1) PATLITE (0) Pro-face by Schneider Electric (0) RS Pro (0) Schneider Electric (0) TDK (0)
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: 30; 60; 90

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Until 31/03/2025

Digital Heater Breakage Alarm K8AC

OMRON

A K8AC digital heater burnout alarm.

[Features]
Outputs highly accurate heater burnout alarms using high resolution digital measurements.
· Can detect a single burnout from among multiple heater circuits. Detects burnout by digitally determining minute current fluctuations.
Uses screwless clamp terminals so less wiring required. (K8AC-H2 series only)
· Uses non-loosening screwless type clamp terminals, reducing the amount of time spent on tasks such as torque control and retorquing for screw fastening operations etc.
· Easy to wire. Simply insert the rod shaped sleeved terminal into the terminal port.
Built-in simple scaling function for setting the external CT ratio and CT number of throughputs. (K8AC-H2 series only)
· Easy scaling settings by simply inputting (1) CT ratio and (2) the number of CT throughputs.
[A two-type series for use with different heater control methods]
· Types with ON/OFF controls, phase controls, and heater burnout alarms for cycle control heaters are available.
Can detect over-current caused by layer short circuits in the heater, and detect SSR faults.
· Not only detects over-current whereby it then produces an alarm warning of heater burnout, but also detects over-current caused by layer short circuits.
· Monitors the heater current and control outputs from the temperature adjuster so it can detect SSR short-circuit faults and SSR open faults.
· Detects SSR faults, enabling the prompt discovery of disabled temperature controls.
Compatible with heater burnout alarms for phase control heaters. (K8AC-HP type)
· Shifts the burnout detection value in line with the control output value from the temperature adjuster.
· For phase control and cycle control, the amount of power output is analog controlled in line with the signal for the current output of the temperature controller (4 to
20mA) .
· The K8AC-H shifts the heater burnout alarm value in line with the control output amount for the temperature controller.
· Through this, it achieves stable heater burnout alarm functionality.
· Compatible with the power adjuster gradient settings.
· When making gradient settings on a power adjuster, make sure to set a gate current level commensurate to the gradient settings.

From: ฿ 17,115.00
Special Price
Days to Ship: Same day

Same day


Brand
Product Series
From
Days to Ship
Volume(dB)
Product Type
Rated Voltage(V)
Shape
Sound
Types of sound
Volume adjustment
Terminal shape
Dimension width(mm)
Protection function (IP/drip-proof, etc.)
Representative Standard
Dimension length(mm)
Dimension thickness(mm)

	You can add up to 6 items per a category to the compare list.Compare Until 31/03/2025
Brand	OMRON
Product Series	Digital Heater Breakage Alarm K8AC
From	฿ 17,115.00 Special Price On Sale Until 31/03/2025
Days to Ship	Same day
Volume(dB)	-
Product Type	-
Rated Voltage(V)	Other
Shape	-
Sound	-
Types of sound	-
Volume adjustment	-
Terminal shape	Insertion Terminal
Dimension width(mm)	35
Protection function (IP/drip-proof, etc.)	-
Representative Standard	-
Dimension length(mm)	90
Dimension thickness(mm)	100

Related Categories to Alarms/Buzzers

- Alarms/Buzzers
- Alarms/Buzzers (Options, Others)

FAQ Alarms/Buzzers

Question: How do buzzers function in electrical circuits?

Answer: Electromagnetic buzzers use an electromagnetic coil to generate a magnetic field. This field attracts a movable diaphragm, causing mechanical vibrations. As the diaphragm moves back and forth, it produces sound waves, resulting in the audible buzzing or beeping sound. Connected to an electrical circuit, the buzzer is activated when current flows through the coil. It's important to note that there are different types of buzzers, including electromagnetic, piezoelectric, and magnetic-transducer buzzers. Each type operates on different principles

Question: What are the typical uses of buzzers in various industries?

Answer: Buzzers are widely used in various industries for signaling and alerting. Here are some typical uses of buzzers in different industries such as:
1. Automotive industries: In vehicles, buzzers are employed for warning signals, such as seatbelt reminders, and low fuel indicators.
2. Medical Industries: Medical devices use buzzers for alarms and notifications, such as indicating the end of a medical procedure or alerting healthcare professionals to specific conditions.
3. Industrial Automation: Buzzers are used in manufacturing and industrial settings to signal the completion of processes, indicate faults, or alert operators to specific events.
4. Security Systems Industries: Alarm systems and security devices use buzzers to produce loud alerts in the event of a breach, fire, or other security concerns.

Question: What differentiates piezo buzzers from electromagnetic buzzers?

Answer: This table summarizes the key differences between piezo buzzers and electromagnetic buzzers in terms of their operating principles, mechanisms, sound frequency ranges, efficiency, size, and common applications.

Feature	Piezo Buzzers	Electromagnetic Buzzers
Operating Principle	Crystal deformation	Diaphragm driven by electromagnet
Mechanism	Crystal vibrations directly produce sound	Diaphragm or armature physically moves to create sound
Sound Frequency Range	Narrow, often in ultrasonic or audible range	Broader range, capable of various frequencies
Efficiency	High efficiency, fast response time	Variable efficiency, may have slower response time
Size and Weight	Generally smaller and lighter	Tends to be larger and heavier
Applications	Compact designs, low power, high-frequency	Various applications, broader frequency requirements

Question: What factors determine the loudness of a buzzer?

Answer: 1. Power Input: Higher electrical power results in increased loudness.
2. Design and Construction: Physical characteristics impact efficiency.
3. Resonance Frequency: Operating at resonant frequency maximizes loudness.
4. Voltage and Current: Increased levels within limits enhance sound output.
5. Environmental Conditions: Surrounding factors influence perceived loudness.
6. Transducer Efficiency: Efficient transducers produce more sound.
7. Sound Output Mechanism: Different mechanisms impact loudness.
8. Duty Cycle: Continuous operation may enhance perceived loudness.
9. Frequency Range: Some frequencies are more noticeable or louder than others.

Question: Can buzzers be considered a form of sound energy?

Answer: Yes, buzzers can be considered a form of sound energy. Sound energy is a type of mechanical wave that propagates through a medium, such as air, water, or solids. When a buzzer is activated, it typically produces vibrations that create compressions and rarefactions in the surrounding air, generating sound waves. These sound waves carry energy in the form of vibrations, and when they reach our ears, they are perceived as sound.

Question: How do you integrate a buzzer into a security system?

Answer: Incorporate a buzzer into a security system by linking it to a controller, such as Arduino or Raspberry Pi. Ensure proper power alignment, connect to a digital output pin, and code the buzzer to respond to security events like unauthorized access detected by sensors.Thoroughly test and calibrate the system, considering backup power.

Question: How do you choose the appropriate buzzer size and sound level for different environments?

Answer: Select a buzzer size based on space constraints and application requirements. For quiet environments, opt for smaller, less powerful buzzers to minimize disturbance. In noisy settings, choose larger buzzers with higher sound levels for better audibility. Consider dB ratings to match ambient noise levels; quieter environments need lower dB, while louder surroundings require higher dB ratings. Always test in the specific environment to ensure the chosen buzzer meets the desired sound level without being excessively disruptive or inadequate for the given conditions.

Question: What are the main considerations when connecting a buzzer to a digital circuit, such as an Arduino or Raspberry Pi?

Answer: When buzzing with digital circuits, remember these key points:
1. Buzzer type: Choose between active (amplified, needs only digital signal) or passive (requires driver circuit).
2. Voltage and current: Match buzzer specs to your board's capabilities (e.g., 5V for Arduino). Calculate current draw and ensure sufficient power supply.
3. Driving the buzzer: Use a transistor or driver IC for passive buzzers or high current needs. Connect active buzzer directly to a digital pin.
4. Pulse frequency: Control sound pitch and pattern by varying the frequency of the digital signal driving the buzzer (typically 200Hz to 5kHz).
5. Protection: Add a flyback diode across the buzzer to absorb reverse voltage spikes generated when switching it off.