Model 280A | Charge Plate Monitor
The Simco-Ion Model 280A Charged Plate Monitor is a high-precision measurement instrument engineered for the verification and performance analysis of ionization systems in controlled environments. Designed to meet the stringent requirements of electrostatic discharge (ESD) control, it provides accurate and repeatable measurements of charge decay and ion balance, ensuring optimal process reliability.Equipped with a wide dynamic measurement range up to ±1200 V and a fast response time of less than 10 ms, the system delivers highly responsive and stable readings. Its advanced electrometer technology ensures an accuracy of up to 0.1% of the measured value, with minimal noise and drift, enabling reliable monitoring of critical electrostatic parameters.The Model 280A features a user-friendly graphical LCD interface, allowing operators to configure test parameters, visualize decay curves, and monitor peak voltages in real time. Integrated USB connectivity facilitates data acquisition and traceability, supporting process validation and quality control procedures. Designed for flexibility, the device includes interchangeable charged plates and programmable voltage settings, enabling adaptation to various standards and applications. Its robust construction, combined with environmental sensors for temperature and humidity, ensures consistent performance under typical operating conditions.Compact and portable, the Model 280A is ideally suited for use in cleanrooms, electronics manufacturing, and other static-sensitive industries where precise ionization verification is essential.
Specifications
| Power | 90-250 VAC, 50/60 Hz, <12W operating (6 hrs internal battery life for portable use; charge time <8 hrs to >90% capacity) |
| Charge Plate | Detachable: 6" x 6" (15.2 x 15.2 cm) Capacitance: 20 pF, ±5% (not including strays) Zero Drift: <100 mV/sec (no incident ion flow) Self Discharge: <200 mV/sec |
| LCD Display | 240 x 64 character/graphic |
| Display Time | 4 digit display Accuracy: 0.1% of reading ±1 lsd Resolution: 0.1 sec for readings <1000 sec; 1 sec for reading >999 sec |
| Display Voltage | 240 x 64 character/graphic; 3.5 digit display (Decay and Peak reading) Accuracy: ±0.1% of reading ±3 lsd (least significant digit) Resolution: 1V for readings >99V; 0.1V for reading <100V |
| Voltage Peak Detector | Balance Test Bandwidth: <10 Hz (pulse width >50 msec less 10% error typical) Average Voltage Overflow: When averaging overflows, the last calculated value for the average voltage will be displayed, and the Avg line of the display will flash, indicating an overflow; the instrument continues to correctly indicate changes to the positive and negative peak voltages, +Vp and -Vp, respectively |
| Charge Voltage | Range: 10V to 100V above the start voltage Resolution: Settable to 1V increments Accuracy: 0.3% of setting ±2.5V |
| Start Voltage | 1000V, standard Range: ±10 to ±1000V Resolution: Settable to 1V Accuracy: 0.3% of setting ±2.5V |
| Stop Voltage | 100V, standard Range: 0 to ±995V Resolution: Settable to 1V Accuracy: 0.3% of setting ±2.5V |
| Electrometer | Dynamic Range: ±1200V Follower Error: <10 mV Speed of Response: <10 msec for 1 kV to 0V (90-10%) , Bandwidth: -3 db @ 1 Khz, 20 Vp-p; 3 db @ 10 Hz, 2000 Vp-p Noise: <12 mVrms |
| Temperature Sensor | Range: 0-122°F (0-50°C) Accuracy: ±37°F (±2°C), typ |
| Humidity Sensor | Range: 10-80% RH @ 25°C Accuracy: ±5% (typ) |
| Monitor Output | Interface: USB Divide by 200 Accuracy: Output: 0.1% of reading ±12 mV Impedance: 1 kOhms |
| Operating Env | Temp: 41-95°F (5-35°C); Humidity: ±5% typ from 10-80% RH @ 77°F (25°C) |
| Dimension | 11”W x 9”L x 6"H (27.9 x 22.9 x 15.2 cm) |
| Weight | 12.5 lb (5.67 kg) |