Wrist Strap Online Monitor SMT Cleanroom Anti Static Wrist Checker
概要：
If you rely on wrist straps for ESD protection, you’ve probably wondered: how do I know it’s working right now, this very second? Periodic testing only tells you it was working at the time of the test—but what about the rest of the shift? That’s the gap a Wrist Strap Online Monitor fills. It connects to your existing strap and continuously checks the ground path, instantly alerting you if the connection breaks, the cord fails, or skin contact becomes poor. Many operators appreciate that a Wrist Strap Online Monitor removes the need for hourly self‑checks, freeing them to focus on the job.
For a more technical perspective, a Wrist Strap Continuous Monitor does exactly the same thing—the two names are often used interchangeably—but the idea is consistent: real‑time, uninterrupted supervision of the operator’s grounding integrity. With both audible and visual alarms, a Wrist Strap Continuous Monitor ensures that any fault is caught the moment it occurs, not during the next audit. Whether you call it an online monitor or a continuous monitor, the benefit is clear: it removes human error from the testing routine and gives you confidence that every minute of production is truly ESD‑safe.
Technical Specification
| Model | 3W-7851 One Service Position | 3W-7852 Double Service Position |
| Function | 1.4MΩ ±5% | 1.4MΩ ±5% |
| Power Supply | AC 6V, 0.3A | AC 6V, 0.3A |
| Power Consumption | 1.8W | 1.8W |
| Size (L×W×H) | 63×60×28 mm | 110×60×28 mm |
| Weight | 250g | 310g |
Notice：Excluding Wrist Strap
世界最高水準のESD製造能力
三威から調達する場合、業界をリードするOEM/ODMメーカーと直接提携することになります。当社は最先端の 7万m²超の一貫生産拠点 浙江省楽清中心工業団地において、独自の材料配合から最終的な高精度製品の成形に至るまで、すべての工程を自社で管理しています。.
統合されたスケール
7万平方メートル超の最新鋭の工場基盤に、高負荷・高精度の射出成形機を備え、安定したリードタイムで大口の卸売注文に対応します。.
フルチェーン制御
独自開発の制電材料の研究開発から、構造金型の設計、自動化製造、迅速なグローバル物流まで、すべてを自社内で一貫して管理しています。.
厳格な検査
厳格な原材料検査と、生産ラインにおける多点表面抵抗値 測定を組み合わせることで、100%が国際的なESD基準ガイドラインに準拠していることが保証されます。.
帯電防止 製品とソリューション
製造および運用のライフサイクル全体にわたり、包括的な静電気保護を提供します。.
実装機
自動ライン用帯電防止コレクションボックスおよびラック.
保管と物流
台車、棚、箱、トレイ、および部品容器.
ワークステーションとPPE
制電椅子、マット、リストストラップ、および個人用保護具。.
カスタム開発
カスタム金型の開発と特殊な制電材料。.
当社のOEM/ODMの強み
先進R&D・材料イノベーション
国家発明特許を取得し、耐熱温度は200℃に達する自社開発の制電材料。私たちは成形するだけでなく、コンパウンド（配合）から手掛けます。.
本格生産能力
安定した効率的な供給を実現するため、射出成形、造粒、および関連する加工システムを完備した30,000㎡の工場。.
一貫したフルカスタム
材料の固有抵抗、色、サイズ、ロゴ、パッケージ、認証は、IEC61340-5-1、ANSI/ESD S20.20、または軍用規格に適合するようにカスタマイズ可能です。.
品質保証・グローバルコンプライアンス認証
“三維社は半導体組立ライン向けに、カスタム仕様の高耐熱クリーンナチュラルカラートレイの開発に成功しました。これにより輸入品の代替を実現し、優れたESD安全性を確保するとともに、クリーンルームの高い清浄度要件を満たしました。”
世界的なフォーチュン500の業界リーダーから信頼されています
当社独自のESDソリューションは、以下をはじめとする世界のエリート生産施設に導入されています。 インテル、モトローラ、シーメンス、IBM、パナソニック、ノキア、デル。.
カスタムサイズや大口卸売価格をお探しですか？
三維は、自社内の強力なR&Dチームを基盤とし、お客様の特定のSMT生産ラインや倉庫レイアウトに合わせた完全なOEM/ODMオプションを提供します。カスタム金型、色分け、または統合された5Sストレージコンサルティングについて、今すぐ専門家にお問い合わせください。.
よくある質問 (FAQ)
1. What is a wrist strap continuous monitor?
A wrist strap continuous monitor is a device that constantly checks the grounding integrity of an operator’s ESD wrist strap throughout the entire work shift. Unlike periodic testers that only check at the start of a shift, a continuous monitor provides real‑time, uninterrupted verification that the wrist strap and ground path remain intact. If any part of the loop fails—whether due to a broken cord, poor skin contact, or a loose connection—the monitor triggers an audible and visual alarm instantly.
2. What is the difference between a continuous monitor and a periodic wrist strap tester?
A periodic tester (often called a “touch tester”) checks wrist strap resistance at a single point in time—typically at the beginning of a shift. A continuous monitor, on the other hand, verifies the wrist strap and ground path in real time throughout the entire work shift. The key difference is that periodic testing can only tell you the strap was working at the moment of the test; a continuous monitor catches failures the instant they occur, eliminating the gap where a component could be exposed to ESD. ANSI/ESD S20.20 allows either approach, but continuous monitoring provides a higher level of protection for sensitive devices.
3. How does a wrist strap continuous monitor work?
A continuous monitor works by sending a low‑voltage signal through the wrist strap and the operator’s body to ground. It continuously observes the resistance (or impedance) of the loop, which consists of the monitor, the cord, the wristband, and the person. If any part of this loop opens—becoming disconnected or exceeding the acceptable resistance limit—the circuit detects the change and triggers an alarm. Different monitors use different technologies: capacitance‑based, impedance‑based (wave distortion), or resistance‑based (dual‑wire) systems.
4. What causes a wrist strap continuous monitor to alarm?
A continuous monitor typically alarms due to a faulty wrist strap cord, poor contact between the wristband and the operator’s skin, a loose worksurface mat connection, or a grounding/electrical wiring problem. Other causes can include dry skin, wearing the band incorrectly, or a failing solder connection in the cord. In some cases, an electrostatic field present in the environment can also trigger the alarm. The alarm is designed to alert the operator immediately so the issue can be corrected before any ESD‑sensitive components are exposed to risk.
5. Is a wrist strap continuous monitor compliant with ANSI/ESD S20.20?
Yes. Continuous monitors meet the continuous monitoring requirements of ANSI/ESD S20.20. Per ESD‑S1.1 Annex A.3, “Daily (wrist strap system) testing may be omitted if constant monitoring is used”. Additionally, continuous monitors satisfy the ISO and ANSI/ESD S20.20 test logging requirements by their very function—they eliminate the need for users to manually test wrist straps and log the results. This makes them a cost‑effective way to maintain compliance while providing superior protection.
6. What is the ParkSnap feature on a continuous monitor?
ParkSnap is a convenient feature that allows the operator to disconnect and “park” their wrist strap when leaving the workstation without triggering a false alarm. The operator touches the ParkSnap or park delay switch, and the monitor’s audible alarm disables for approximately 8 seconds—giving the operator enough time to remove the wrist strap and attach it to the ParkSnap connector. This places the monitor into standby mode while the operator is away, and the alarm automatically re‑activates when the wrist strap is reconnected. It eliminates the nuisance of false alarms during breaks or when operators need to temporarily leave their workstations.
