Optical Liquid Level Sensor Manufacturer

For buyers comparing factories, L’objectif est simple: confirm whether the supplier can build the sensor you need, customize it for your product, test it consistently and ship repeat orders to your market.

Shenzhen Manufacturer for OEM Optical Liquid Level Sensor Supply

As a Shenzhen-based manufacturer and exporter, HojellyTek focuses on optical/photoelectric liquid level sensing for equipment brands, industrial buyers, appliance manufacturers, distributors and system integrators. Our team helps customers source sensors for water tanks, Petits réservoirs, medical or cleaning equipment, vending machines, Pompes, fuel/oil monitoring and compact liquid detection modules.

Unlike a generic catalogue-only supplier, we work around the buyer’s integration conditions: tank wall design, Direction de montage, Type liquide, control board voltage, Logique de sortie, Acheminement des câbles, Style de connecteur, housing material and target purchasing volume. That is why the RFQ stage matters. A small optical sensor can fail in the field if the prism shape, Type de sortie, fil, seal or cable is selected only from a picture.

If you need a standard Capteur de niveau optique or a customized assembly for repeat production, our engineering and sales team can review your requirement and recommend a practical sourcing route.

Product Range for OEMs, Importers and Distributors

Our optical liquid level sensor range is built around photoelectric detection. A typical design uses an infrared LED, a phototransistor or receiver circuit and a transparent prism tip. Dans les airs, La lumière infrarouge se réfléchit à l’intérieur du prisme et revient au récepteur. When liquid covers the tip, Changements de la condition réfractive, less light returns and the circuit switches state. This dry-versus-wetted response gives fast point-level detection without floats or moving parts.

Common supply categories include:

• Point level switches for high-level, low-level or empty-tank detection
• Micro optical sensors for compact appliances, small tanks and tight installation spaces
• IR water level sensor modules for water, cleaning fluid and general liquid detection
• Photoelectric level switch assemblies with cable, connector and housing customization
• OEM optical switch designs for control boards, Pompes, tanks and embedded equipment
• Application-specific wetted material options y compris l’alimentation, PTFE, 316 stainless steel and glass depending on liquid compatibility and operating conditions

For a standard product reference, buyers can review our Interrupteur photoélectrique de niveau liquide and then send operating details for model confirmation.

Capabilities and Lead-Time Planning

Lead time and MOQ depend on whether the buyer needs a standard model, a modified cable/connector version or a deeper ODM design. Instead of publishing a fixed number that may not fit your model, we confirm MOQ, sampling time and production schedule after checking the housing, circuit, output and compliance requirements.

For custom product development, start with our customized optical liquid level sensor page and share your drawing, existing sample or target installation photo.

Photoelectric Sensing Know-How Buyers Should Screen

The most important part of sourcing from an optical liquid level sensor manufacturer is not only the outside shape. The internal optical path, prism design and electronics determine whether the switch remains stable after thousands of wet/dry cycles.

A reliable sensor design must consider:

Prism and Optical Path

The prism tip must produce a clean difference between dry and wetted conditions. If the tip geometry is poorly matched to the liquid, the sensor may chatter near the switching point or fail to detect low-reflective liquids reliably.

IR LED and Receiver Matching

The emitter and receiver need stable alignment and circuit tuning. A weak signal margin can cause false switching under vibration, bulles, condensation, foam or residue on the sensing tip.

Output Interface

OEM buyers usually need output matched to the control board. Common options include NPN, PNP and, for some system-level requirements, analog-style 4–20 mA signal handling. The correct choice depends on PLC input, MCU logic, Conception par traction, power supply and whether the buyer needs active-low or active-high switching.

Compatibilité des matériaux humidifiés

PSU can suit many compact water and appliance applications. PTFE is preferred where stronger chemical resistance is needed. 316 stainless steel supports rugged industrial or oil-related environments. Glass may be considered where chemical compatibility and optical clarity are critical. Material selection must be confirmed against the actual liquid, agent nettoyant, temperature and pressure conditions.

Mounting and Sealing

Threaded mounting, panel mounting, tank-side mounting, vertical installation and horizontal installation can all change performance. Buyers should confirm thread type, Épaisseur du mur, gasket or O-ring requirement, tightening method and whether the sensor tip is exposed to turbulence.

Real Failure Modes to Avoid

Most sourcing problems come from incomplete application details: wrong output type, incompatible material, insufficient sealing, unstable power, poor cable strain relief, liquid residue on the prism, bubbles around the sensing point, or a sensor body that does not fit the tank geometry. We review these factors before sample confirmation so the buyer does not discover the problem after mass production.

OEM, ODM and Private-Label Support

For equipment brands and distributors, the sensor often needs to look and connect like part of the final product. Our team can support OEM and ODM requests such as custom cable length, connector selection, housing adjustment, thread choice, mounting accessories, dry/wet output logic, label design and export packaging.

Private-label support can be discussed for distributors that need consistent packaging and documentation for their market. For deeper integration, notre Commutateur de niveau optique OEM service helps buyers align the optical switch with their control board, enclosure and procurement target.

Where a project combines liquid detection with smart tank monitoring or connected devices, Tuya/Smart Life related requirements can be reviewed separately to decide whether a sensor-only solution or a connected module is more suitable.

Five-Step Supply Process

1. Enquête: Envoyez le type liquide, Matériau du réservoir, installation drawing or photo, Tension, Type de sortie, Besoins en câble/connecteur, quantity target and destination market. If you have an existing sensor sample, photos and dimensions help speed up model matching.
2. Specification and Customization Review: Our team reviews the sensing method, Matériau humide, Montage, Sortie, sealing and compliance needs. If a standard model fits, we recommend it. Sinon, we discuss a modified or ODM route.
3. Exemple de confirmation: Samples are arranged after the model and customization scope are confirmed. Buyers should test the sensor in the real liquid, real tank position and actual control board circuit, not only in a cup of clean water.
4. Production et contrôle qualité: Production follows the approved specification. QC checks focus on incoming materials, circuit function, optical response, Commutation sèche/humide, leakage or sealing condition where applicable, cable/connector inspection and final appearance/packing review.
5. Soutien à l’expédition et à l’exportation: We support export shipments to markets such as the US, UE et Inde, with packing and documentation prepared according to the order requirement. Logistics options are confirmed based on shipment size, urgency and destination.

Exigences à confirmer avant de commander

A clear RFQ helps reduce sample revisions and protects your production schedule. Please prepare the following details:

• Type liquide, concentration and whether foam, bubbles or residue may appear
• Matériau du réservoir, tank wall thickness and sensor mounting direction
• Required point level: Alerte maximale, alarme basse, empty detection or overflow protection
• Supply voltage and control board input requirement
• Output type such as NPN, PNP or other signal requirement
• Dry-state and wetted-state logic preference
• Préférence pour les matériaux de logement: Alimentation, PTFE, 316 stainless steel or glass
• Fil, Écrou, flange or panel mounting requirement
• Longueur du câble, Connecteur, wire color and pin definition
• Environnement d’exploitation, cleaning process and expected exposure conditions
• MOQ target, annual forecast and private-label requirement
• CE/FCC/RoHS documents required for your market, confirmed by exact model

Supplier Comparison: What to Check Before Choosing a Factory

Why Source from HojellyTek?

• Shenzhen-based optical liquid level sensor manufacturer with export experience
• R interne&D support for photoelectric sensing and OEM integration
• Product coverage from point switches to micro sensors and IR water sensor modules
• Custom cable, Connecteur, Montage, housing and private-label options
• Model-specific confirmation for MOQ, lead time and CE/FCC/RoHS documentation needs
• QC flow covering optical response, électronique, sealing checks and final inspection
• Support for OEMs, importers and distributors shipping to the US, EU, India and other markets
• RFQ support by WhatsApp or email for fast technical clarification

FAQ

Why choose a Shenzhen optical liquid level sensor manufacturer instead of a trading company?

A manufacturer can review the optical path, output circuit, Matériau de logement, mounting and QC process directly. This is important for OEM buyers that need repeatable performance, customized cables/connectors and stable supply for production.

What information is needed before you quote an optical liquid level sensor?

Please provide liquid type, Conception des chars, Direction de montage, Tension, Type de sortie, Exigence de câble ou de connecteur, Préférence en matière, estimated quantity, destination market and any certification documents needed for your project.

Can HojellyTek customize optical liquid level sensors for OEM products?

Oui. Customization can include cable length, Connecteur, fil, Matériau de logement, Logique de sortie, packaging and private-label requirements. More complex ODM changes are reviewed based on drawings, samples or application photos.

Do you provide CE, FCC and RoHS documents?

CE/FCC/RoHS requirements should be confirmed by exact model before ordering. Share your destination market and compliance needs during RFQ so our team can check available documentation for the selected sensor.

Quelle sortie devrais-je choisir: NPN, PNP or 4–20 mA?

NPN and PNP are common for switch output integration with control boards or PLC inputs. 4–20 mA is considered when a system requires analog-style signal transmission. The correct option depends on your controller, wiring design and logic requirement.

What is the MOQ from an optical liquid level sensor manufacturer?

MOQ depends on the selected model, customization level, packaging request and production schedule. Standard models and OEM versions are confirmed separately, so send your target quantity and annual forecast for accurate sourcing advice.

Demandez un devis

Envoyez votre type liquide, Dessin de montage, Tension, Exigence de production, cable/connector details, target quantity and destination market to HojellyTek by WhatsApp or email. Our team will review the application, recommend a suitable optical liquid level sensor, confirm MOQ and lead time, and support sample-to-production sourcing for your OEM, importer or distributor order.