White Paper on YT-YC Chlorophyll Meter Sampling Selection & Full-lifecycle Maintenance

White Paper on YT-YC Chlorophyll Meter Sampling Selection & Full-lifecycle Maintenance

Introduction

National fertilizer reduction policies have been fully implemented, requiring regular in-vivo leaf monitoring for all planting bases and grassroots agricultural stations. Outdated single-indicator chlorophyll meters suffer drawbacks including lack of nitrogen/temperature measurement, small storage capacity and insufficient battery life for all-day field surveys. Low-cost entry-level devices without light-shielding optical paths generate large midday test errors and lack complete technical after-sales support, leading to unrecognizable data for scientific research and agricultural projects.

Shandong Yuntang Intelligent Technology Co., Ltd. has ISO three-system and full 3A certifications with nationwide 24-hour after-sales outlets. The independently developed YT-YC chlorophyll meter optimizes field adaptability via anti-strong light optical path, three-indicator synchronous measurement, large classified storage and long-life lithium battery, realizing integrated all-day mobile sampling in grain fields and greenhouses. Focusing on procurement comparison, standardized calibration, full sampling workflow and periodic maintenance, this white paper delivers highly operable field guidance with all parameters and operations strictly following original factory documents.

Table of Contents

Basic Product InformationCore Technologies & Functional FeaturesDetailed Technical ParametersApplication Scenarios & Industry AdaptationAccessories & Consumables ConfigurationModel Comparison & Selection SuggestionsInstrument Installation ProceduresInstrument Operation ProceduresSample Testing ProceduresInstrument Maintenance SpecificationsWhite Paper Summary

Basic Product Information

Model: YT-YC Chlorophyll Meter (Outdoor Portable Three-indicator Version)Manufacturer: Shandong Yuntang Intelligent Technology Co., Ltd.Positioning: Non-destructive portable leaf detector for all-day mobile sampling in large plots and greenhouses, simultaneously measuring chlorophyll, nitrogen and leaf temperature for agricultural promotion, large-scale planting and university field trials.Differentiated Hardware: Multi-layer light-shielding optical path, synchronous three-indicator single-screen display, 16GB classified storage, dual-purpose USB cable, TF offline backup, high-contrast outdoor LCD, 3000mAh anti-overcharge lithium battery, one-click bilingual switch.Value-added Services: One-year warranty, free lifetime remote firmware upgrade, online video training, 24-hour technical Q&A, free crop nitrogen reference database.Compliance Guarantee: Optical accuracy meets agricultural physiological testing standards; in-vivo sampling data valid for fertilizer reduction projects and university papers. All instruments undergo 72-hour high-light aging test before delivery with full national enterprise qualifications.

Core Technologies & Functional Features

Multi-layer Anti-strong Light Clip Optical PathDifferent from single-layer entry-level devices, the internal composite light-shielding filter components eliminate data drift caused by midday open-field and greenhouse direct light, maintaining chlorophyll repeatability at ±0.3 SPAD. The non-destructive clip avoids leaf picking for full-cycle fixed plant tracking with measurement speed below 0.8s to boost batch sampling efficiency.Simultaneous Three-physiological-index CollectionOne clip captures chlorophyll SPAD, nitrogen and leaf temperature displayed on one screen without repeated clamping, reducing leaf mechanical damage and fully recording crop photosynthesis and nitrogen supply status.16GB Classified Storage ArchitectureSupports independent archiving by plot, crop and sampling date with isolated folders. Historical data can be browsed and abnormal values deleted on-site without daily computer export, suitable for multi-town general surveys.Dual Offline & Online Data ExportUSB cable realizes charging & data export without dedicated software; an extra TF card slot enables offline data copying in remote fields without laptops for dual backup to avoid data loss.Outdoor Low-power Hardware3000mAh lithium battery with anti-overcharge chip supports 8-hour continuous field work; high-contrast screen ensures clear readings under strong sunlight without auxiliary sunshades.Chinese & English One-click SwitchSimple operation logic with Chinese default for domestic users and English switch for international agricultural research projects.

Detailed Technical Parameters

Testing Range & Measuring WindowChlorophyll SPAD: 0.0~99.99; Nitrogen: 0.0~99.99mg/g; Leaf temperature: -10~99.9℃; Measuring area: 2mm×3mm; Measurement interval: ＜0.8sAccuracy & RepeatabilityChlorophyll accuracy ±1.0 SPAD (0~50), repeatability ±0.3 SPAD; Nitrogen accuracy ±5%, repeatability ±0.5mg/g; Leaf temperature accuracy ±0.5℃, repeatability ±0.2℃Storage & Export16GB classified storage; USB + TF dual export; high-contrast outdoor LCDPower & Weight4.2V 3000mAh lithium battery with overcharge protection; Net weight 230g; No test consumablesEnvironmental RangeOperation & storage: -10℃~50℃, relative humidity ≤85%, no condensation

Application Scenarios & Industry Adaptation

Grassroots Agricultural Stations: General surveys of wheat, corn and rice to formulate regional nitrogen reduction plans for agricultural project acceptance.Large-scale Grain & Vegetable Bases: Whole-cycle monitoring of tomatoes, cucumbers and corn to adjust topdressing at seedling and fruit stages and cut fertilizer usage.Standardized Orchards: Non-destructive testing of apple, citrus new shoots to balance tree nitrogen and avoid overgrowth & fruit drop.Tobacco Cooperatives: Regular leaf monitoring to optimize base & topdressing formulas and improve tobacco baking grade.Agricultural Universities: Long-term fixed plant observation for nitrogen gradient and crop stress experiments to meet thesis data requirements.Ecological Green Planting Parks: Physiological sampling as certification evidence for green agricultural products.

Accessories & Consumables Configuration

Standard AccessoriesYT-YC main unit, USB charging & data cable, wear-resistant storage bag, factory calibration card, paper manual, warranty cardNo Consumables: Optical testing requires no reagents, test strips or cuvettes with zero long-term procurement cost.Optional Parts: Spare lithium battery, TF storage card, outdoor sampling backpack, on-site one-on-one training

Model Comparison & Selection Suggestions

YT-YA (900 CNY): Single chlorophyll test, no light-shielding path, tiny storage, only for scattered farmer self-testing.YT-YB (1000 CNY): Chlorophyll + temperature only, no nitrogen measurement, poor high-light stability for small vegetable gardens.YT-YC (1700 CNY): Three-indicator synchronous test, anti-strong light optical path, 16GB classified storage, dual export – optimal for all-day greenhouse & field sampling.YT-YD (2000 CNY): Add Bluetooth mobile synchronization for refined small trials.YT-YE (6800 CNY): Desktop lab device, non-portable, only in-vitro leaf testing indoors.

Selection Guidance: Choose YT-YC for all-day open/greenhouse multi-plot sampling with three indicators; YT-YD for trials requiring mobile data synchronization; YT-YE for pure indoor lab research.

Instrument Installation Procedures

Unbox Inspection: Check screen and optical path for scratches/deformation after taking out main unit, cable and calibration card.Full Initial Charge: Connect USB to 5V charger and fully charge the lithium battery before disconnection.System Settings: Boot to switch language and create crop/plot classification folders in advance.Optical Zero Calibration: Lay calibration card flat into the measuring window and complete correction following on-screen prompts.Optional TF Card Installation: Insert TF into the side slot for offline data backup, the device auto-identifies the storage partition to finish installation.

Instrument Operation Procedures

Power On Self-check: Long press power button for automatic optical path, storage and battery inspection.Daily Pre-calibration: Calibrate with factory card before daily field sampling to eliminate light & temperature drift.Folder Selection: Choose the corresponding sampling plot folder or create new archives.Enable three-indicator synchronous display mode and preset USB/TF data backup.Select healthy field leaves and insert into the clip window for testing.

Sample Testing Procedures

Leaf Screening: Pick middle mature functional leaves without thick veins, insect or disease spots.Flat Placement: Open the clip and fully cover the 2mm×3mm window with leaves without light leakage.Auto Measurement: Close the clip; three groups of data pop up within 0.8s and auto-save to the classified folder.Repeated Sampling: Collect 3~5 leaves per plant and delete abnormal values on-site after batch sampling.Indoor Export: Connect USB to a computer to export Excel data without dedicated software for permanent backup.

Instrument Maintenance Specifications

Daily Post-field CareWipe optical window with dry lint cloth to remove leaf juice and sediment; power off and store in the bag, recharge below 20% battery.Weekly Optical CalibrationRun zero calibration weekly and clean dust from USB/TF slots for stable transmission & charging.Monthly Data BackupExport all records to computer monthly and delete expired folders to free storage space.Long-term StorageMaintain battery at 60%, disconnect all cables and store in dry warehouse; power on for 5 mins every 30 days for self-check & charging.After-sales Service24-hour remote video troubleshooting for drift, black screen or charging failure; one-year full warranty, free original parts and lifetime free firmware & agricultural technical support.

White Paper Summary

The YT-YC chlorophyll meter adopts multi-layer anti-strong light optical path, three synchronous indicators and large classified storage to solve common defects of cheap entry-level devices such as high outdoor error, single indicator and insufficient storage. Lightweight (230g) and long-lasting for field batch surveys, it has zero consumable costs. Supported by Yuntang’s national qualifications, R&D team and nationwide after-sales network, this white paper provides full procurement, calibration, sampling and maintenance guidance for agricultural stations and planting bases. Suitable for all crop in-vivo monitoring to guide nitrogen reduction, the 1700 CNY model balances cost and performance as the mainstream field sampling device.