The Keyence LV-NH65 belongs to the LV-N series of multi-purpose digital laser sensors. Specifically, this unit serves as a retro-reflective area-type sensor head with a magnified beam profile. Its wide-area detection capability makes it suitable for inspecting uneven targets or detecting objects with openings. Additionally, the visible red laser spot simplifies alignment during installation. Therefore, technicians can complete setup quickly without complex calibration tools. The head itself contains no output circuitry. Instead, it relies on a dedicated cable connection to an LV-N series amplifier for signal processing and power supply.
The optical performance of the LV-NH65 centers on a 660 nm visible red semiconductor laser. This light source meets Class 1 laser safety requirements under FDA CDRH Part 1040.10 and IEC 60825-1 standards. Consequently, the sensor operates safely in typical industrial environments without additional protective enclosures.
The detecting distance varies according to the selected response mode on the connected amplifier. In MEGA mode, the LV-NH65 achieves a range of 180 to 350 mm using the included reflector. Furthermore, when paired with the optional OP-51428 reflective tape, this range extends to 300 to 500 mm. Other modes provide shorter but faster detection: ULTRA (100 to 200 mm), SUPER (60 to 180 mm), TURBO (10 to 150 mm), FINE (0 to 120 mm), and HSP (0 to 100 mm). Next, users should select the mode that balances speed and range for their specific application.
This sensor head contains no built-in communication ports or output transistors. Instead, all signal processing occurs within the LV-N series amplifier. Therefore, the LV-NH65 requires a compatible amplifier unit (such as LV-N11N or LV-N12N) to function. The amplifier supplies power and converts the optical signal into a usable NPN or PNP output.
The LV-NH65 housing uses glass-reinforced plastic for the main case and norbornene plastic for the lens cover. This material combination provides dimensional stability across the operating temperature range of -10 to +55 °C (no freezing). Moreover, the sensor tolerates relative humidity from 35 to 85 % RH without condensation.
| Parameter | Value |
|---|---|
| Light Source | Visible red semiconductor laser, 660 nm |
| Laser Class | Class 1 (FDA CDRH, IEC 60825-1) |
| Detecting Distance (MEGA) | 180 to 350 mm |
| Detecting Distance (with OP-51428) | 300 to 500 mm |
| Operating Temperature | -10 to +55 °C |
| Relative Humidity | 35 to 85 % RH |
| Case Material | Glass-reinforced plastic |
| Weight | Approx. 70 g |
First, secure the LV-NH65 using the included mounting bracket. The tightening torque for the bracket screws should not exceed 0.3 N·m. Over-tightening may damage the plastic housing. Next, position the reflector or reflective tape directly opposite the sensor head. The wide beam profile tolerates slight misalignment, but the reflector must remain within the detecting distance range for the selected mode.
Open the dust cover on the amplifier and lower the hold lock lever. Then, insert the sensor head connector fully into the amplifier port. Finally, raise the hook and secure the lock lever before closing the dust cover. After connection, verify that the amplifier recognizes the LV-NH65 head. If the display shows an unexpected model code, initialize the amplifier settings and reconnect the head.
Power on the amplifier and set the response mode to MEGA for maximum range. Align the sensor head so the red laser spot strikes the center of the reflector. Meanwhile, observe the amplifier's incident light intensity indicator. Adjust the head angle until the intensity reaches its maximum. For transparent or small targets, consider switching to FINE or HSP mode to improve detection stability.
LV-NH65 Sensor Head × 1
Mounting Bracket × 1
Reflector (included with sensor head) × 1
Instruction Manual × 1
Q1: Does the LV-NH65 work without an amplifier?
A: No. The LV-NH65 is a sensor head only. It requires an LV-N series amplifier unit for power and signal output. Without an amplifier, the head cannot operate or produce a detection signal.
Q2: What is the maximum detecting distance of this model?
A: In MEGA mode with the standard included reflector, the range is 180 to 350 mm. When using the optional OP-51428 reflective tape, the maximum distance extends to 500 mm.
Q3: Can I use the LV-NH65 for transparent object detection?
A: Yes, but with limitations. The retro-reflective principle works well for transparent films and glass when the beam is blocked. However, for highly transparent targets, switching to FINE or HSP mode provides a faster response and better repeatability.
Q4: What is the difference between LV-NH65 and standard spot-type heads?
A: The LV-NH65 projects a magnified wide-area beam rather than a small spot. This design detects targets with irregular shapes or mesh-like surfaces that a narrow spot beam might miss.
Q5: How should I clean the sensor lens?
A: Gently wipe the norbornene lens cover with a soft, dry cloth. Avoid solvents or abrasive materials. Since the lens cover is plastic, harsh chemicals may cause clouding and reduce optical performance.
| Brand Name | |
| Model No. | LV-NH65 |
| Product Type | Digital Laser Sensor Head |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
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