Optical Liquid Level Sensor Manufacturer
For buyers comparing factories, the goal is 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, Kleine Stauseen, medical or cleaning equipment, vending machines, Pumps, 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, Montagerichtung, Flüssigtyp, control board voltage, Ausgangslogik, Kabelführung, Steckertyp, 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, Ausgabetyp, Faden, seal or cable is selected only from a picture.
If you need a standard Optischer Pegelsensor 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. In der Luft, Infrarotlicht reflektiert im Prisma und kehrt zum Empfänger zurück. When liquid covers the tip, der brechungsbedingte Zustand ändert sich, 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, Pumps, tanks and embedded equipment
- Application-specific wetted material options einschließlich PSU, PTFE, 316 stainless steel and glass depending on liquid compatibility and operating conditions
For a standard product reference, buyers can review our photoelectric liquid level switch 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.
| Supply capability | What can be configured | Buyer should confirm | Lead-time handling |
|---|---|---|---|
| Standard optical point switch | Housing, Kabel, common output logic, standard mounting | Flüssiger Typ, Spannung, Ausgabe, Montagerichtung | Confirmed after model selection |
| Micro optical sensor | Kompakte Karosserie, short sensing tip, small tank integration | Available space, Wanddicke des Tanks, Steckverbinder | Confirmed after drawing/sample review |
| IR water sensor module | Module format, Kabel, Steckverbinder, signal interface | Water quality, board voltage, Standort der Installation | Confirmed after application check |
| OEM optischer Pegelschalter | NPN/PNP logic, Kabellänge, Steckverbinder, Faden, Etikett | Control board input, dry/wet logic, target volume | Confirmed during RFQ and sample stage |
| ODM/private-label sensor | Housing design, Verpackung, Logo, documentation support | Brand requirement, Markt, certification needs | Confirmed after project scope review |
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, Blasen, Kondensation, 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, Pull-up-Design, power supply and whether the buyer needs active-low or active-high switching.
Benetzte Materialkompatibilität
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, Reinigungsmittel, temperature and pressure conditions.
Mounting and Sealing
Threaded mounting, Paneelmontage, tank-side mounting, vertical installation and horizontal installation can all change performance. Buyers should confirm thread type, Wanddicke, 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, unsere OEM optischer Pegelschalter 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
- Untersuchung: Senden Sie den flüssigen Typ, Panzermaterial, installation drawing or photo, Spannung, Ausgabetyp, cable/connector needs, quantity target and destination market. If you have an existing sensor sample, photos and dimensions help speed up model matching.
- Specification and Customization Review: Our team reviews the sensing method, Benetztes Material, Montage, Ausgabe, sealing and compliance needs. If a standard model fits, we recommend it. Wenn nicht,, we discuss a modified or ODM route.
- Beispielbestätigung: 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.
- Produktion und Qualitätskontrolle: Production follows the approved specification. QC checks focus on incoming materials, circuit function, optical response, Trocken/Nass-Umschalten, leakage or sealing condition where applicable, cable/connector inspection and final appearance/packing review.
- Versand- und Exportunterstützung: We support export shipments to markets such as the US, EU und Indien, with packing and documentation prepared according to the order requirement. Logistics options are confirmed based on shipment size, urgency and destination.
Voraussetzungen zum Bestätigen vor der Bestellung
A clear RFQ helps reduce sample revisions and protects your production schedule. Please prepare the following details:
- Flüssiger Typ, concentration and whether foam, bubbles or residue may appear
- Tankmaterial, tank wall thickness and sensor mounting direction
- Required point level: Hoher Alarm, Niedriger Alarm, 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
- Präferenz für das Wohnmaterialmaterial: Netzteil, PTFE, 316 Edelstahl oder Glas
- Faden, Nuss, flange or panel mounting requirement
- Kabellänge, Steckverbinder, wire color and pin definition
- Betriebsumgebung, 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
| Sourcing factor | Low-risk supplier behavior | Risk signal |
|---|---|---|
| R&D capability | Can discuss prism, IR circuit, output and installation details | Only sends photos and prices |
| MOQ and lead time | Confirms by model and customization level | Gives one fixed answer for every project |
| Material selection | Reviews liquid compatibility before quoting | Assumes one plastic fits all liquids |
| QC process | Tests optical response, output and packing before shipment | No clear inspection flow |
| OEM/ODM-Unterstützung | Can adjust cable, Steckverbinder, Wohnen, label and packaging | Only sells stock parts |
| Export support | Can discuss documents, packing and shipment route | No experience with importer requirements |
| Kommunikation | Reviews drawings, samples and application details | Pushes order before confirming specs |
Why Source from HojellyTek?
- Shenzhen-based optical liquid level sensor manufacturer with export experience
- In-house R&D support for photoelectric sensing and OEM integration
- Product coverage from point switches to micro sensors and IR water sensor modules
- Custom cable, Steckverbinder, Montage, housing and private-label options
- Model-specific confirmation for MOQ, lead time and CE/FCC/RoHS documentation needs
- QC flow covering optical response, Elektronik, sealing checks and final inspection
- Support for OEMs, importers and distributors shipping to the US, WIR, Indien und andere Märkte
- RFQ support by WhatsApp or email for fast technical clarification
Häufig gestellte Fragen
Why choose a Shenzhen optical liquid level sensor manufacturer instead of a trading company?
A manufacturer can review the optical path, output circuit, Wohnmaterial, 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, Panzerkonstruktion, Montagerichtung, Spannung, Ausgabetyp, Kabel- oder Steckverbinderanforderung, Materialpräferenz, estimated quantity, destination market and any certification documents needed for your project.
Can HojellyTek customize optical liquid level sensors for OEM products?
Ja. Customization can include cable length, Steckverbinder, Faden, Wohnmaterial, Ausgangslogik, 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.
Welche Ausgabe sollte ich wählen: 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.
Fordern Sie ein Angebot an
Schick deinen flüssigen Typ, Montagezeichnung, Spannung, Ausgangsanforderungen, 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.
