Product Overview
The CHUERA-4802D/4804D/4808D Smart IoT ESD ground monitor is built for production areas where grounding conditions need to be checked continuously rather than only during periodic inspections.
The monitor can track three common grounding points at an ESD workstation: the operator's wrist strap, the ESD work surface mat and grounded production equipment. Resistance values and operating status are shown directly on the 2.4-inch color display, giving operators and supervisors a clear view of each monitored point.
Wireless communication allows monitoring data to be transmitted without complicated communication wiring. The display also shows wireless signal status, which makes installation, commissioning and daily troubleshooting easier.
Three configurations are available for workstations with different monitoring requirements: CHUERA-4802D, CHUERA-4804D and CHUERA-4808D.
Model Options
CHUERA-4802D
2 monitoring points
CHUERA-4804D
4 monitoring points
CHUERA-4808D
8 monitoring points
The different versions allow factories to select a suitable configuration according to the number of grounding points required at each workstation or production area.
Three Types of Grounding Monitoring
The monitor can identify and monitor resistance for three types of ESD grounding connections:
This allows personnel grounding, workstation surfaces and production equipment to be managed through the same monitoring system instead of using separate devices for each grounding point.
2.4-Inch Color Display
The built-in 2.4-inch color screen displays important operating information directly on the device, including:
Network connection status
Monitored object
Real-time resistance value
Monitoring status
Wireless communication signal status
The monitor also supports online software or firmware upgrades, making system maintenance more convenient when updates are required.
Clear Status Indication
Each monitoring point is shown with a visual status indication, allowing operators to identify abnormal grounding conditions quickly.
The status colors are:
This makes daily workstation checks easier, especially where several grounding points are being monitored at the same time.
Wireless Communication
The CHUERA-4802D/4804D/4808D series supports wireless data transmission.
Wireless signal status is displayed dynamically on the monitor, helping technicians check communication conditions during installation and commissioning.
Because no additional communication cable is required between every monitoring point and the management system, the system is easier to deploy across multiple workstations or production areas.
Adjustable Monitoring Limits
Different factories may use different ESD control requirements, so the monitoring limits can be adjusted through the monitoring system management software.
The available adjustment ranges are:
Wrist Strap:
10 kΩ to 100 MΩ
ESD Work Surface Mat:
10 kΩ to 100 MΩ
Equipment Grounding:
0 to 20 Ω
Parameters can be configured remotely through the monitoring management software, reducing the need to adjust each monitor individually.
The infrared sensing function can also be enabled or configured through the management system when required.
Infrared Detection
When used with the infrared sensor, the system can help identify situations where an operator has not correctly connected or worn the wrist strap.
The monitor can also detect when the wrist strap socket cable has not been connected correctly or becomes disconnected during operation.
This provides an additional layer of checking beyond resistance monitoring alone and helps reduce missed connections during daily production.
Technical Specifications
| Parameter | Wrist Strap | ESD Work Surface Mat | Equipment Grounding |
Factory Default Monitoring Range | 750 kΩ–35 MΩ ±10% | ≤10 MΩ ±10% | ≤4 Ω ±10% |
Open-Circuit Voltage | ≤1.55 V | ≤1.55 V | ≤1.55 V |
Scan Interval | ≤100 ms | ≤100 ms | ≤100 ms |
Maximum Adjustable Resistance Range | 10 kΩ–100 MΩ ±10% | 10 kΩ–100 MΩ ±10% | 0–20 Ω |
The adjustable ranges allow the monitor to be configured for different workstation requirements while keeping the monitoring logic consistent across multiple production areas.
Optional Accessories
Several accessories are available according to the monitoring point and workstation configuration:
Equipment Grounding Adapter
Used for connecting grounded production equipment to the monitoring system.
ESD Work Surface Mat Adapter
Used to connect the workstation or ESD table mat to the monitor.
Wrist Strap Adapter
Provides the connection between the wrist strap monitoring point and the monitor.
Infrared Sensor
Used for additional detection of wrist strap connection or wearing status.
Dual-Circuit Wrist Strap
Suitable for continuous personnel grounding monitoring applications.
Accessories can be selected according to the actual workstation layout and monitoring requirements.
Typical Applications
The CHUERA-4802D/4804D/4808D series is suitable for ESD-controlled areas where operators, work surfaces and equipment grounding need to be checked continuously.
Typical applications include:
SMT production lines
PCB assembly
Electronics manufacturing
Semiconductor production
Electronic component assembly
Automotive electronics production
Communication equipment manufacturing
New energy electronics manufacturing
Laboratories and testing areas
ESD Protected Areas
Automated production lines
For factories with multiple ESD workstations, the combination of wireless communication and centralized parameter management makes it easier to maintain consistent monitoring settings across the production floor.
Why Use Continuous ESD Ground Monitoring?
Traditional manual checks only show the grounding condition at the time of testing. During production, a wrist strap may become disconnected, an ESD mat grounding cable may loosen, or an equipment grounding connection may change.
A continuous ESD monitor checks these grounding paths during operation and provides a visible status when the measured resistance moves outside the configured range.
For production managers, this makes it easier to identify a grounding problem at the workstation instead of waiting until the next manual inspection.
The CHUERA-4802D/4804D/4808D series combines continuous resistance monitoring, adjustable limits, wireless communication and centralized management in one system, making it practical for both individual workstations and larger ESD-controlled production areas.
FAQ
What does the CHUERA-4802D/4804D/4808D monitor?
It can continuously monitor the grounding resistance of wrist straps, ESD work surface mats and production equipment.
What is the difference between the 4802D, 4804D and 4808D?
The main difference is the number of monitoring points. The series is available in 2-point, 4-point and 8-point configurations for different workstation requirements.
Can the monitoring resistance limits be adjusted?
Yes. Wrist strap and ESD mat monitoring limits can be adjusted within a range of 10 kΩ to 100 MΩ. Equipment grounding can be adjusted within a range of 0 to 20 Ω.
Can the monitoring parameters be configured remotely?
Yes. The monitoring system management software can be used to remotely configure supported device parameters, including monitoring resistance limits and infrared sensing functions.
Does the monitor support wireless communication?
Yes. The series supports wireless data transmission, and the communication signal status can be viewed directly on the color display.
Can it detect a disconnected wrist strap?
Yes. The monitor can detect abnormal wrist strap grounding conditions. When configured with the infrared sensing function, it can also help identify missed connection or wearing conditions.
What information is shown on the display?
The 2.4-inch color display can show network status, the monitored object, real-time resistance values, wireless signal status and monitoring status.
What do the different status colors mean?
Red indicates a failed condition, green indicates a normal condition, yellow indicates a resistance value below the configured range, and grey indicates that the monitoring point is not in use.
What accessories are available?
Optional accessories include an equipment grounding adapter, ESD work surface mat adapter, wrist strap adapter, infrared sensor and dual-circuit wrist strap.
Where is this ESD ground monitor commonly used?
It is suitable for SMT lines, PCB assembly, electronics manufacturing, semiconductor production, automotive electronics, laboratories and other ESD-controlled production environments.
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