The model 268A is the most affordable charged-plate monitor available. It is suited to test all types of ionization systems according to ESD Association standard S3.1. It features 1 kV and 5 kV charging ranges for testing ionization systems or for testing ESD control materials.
It’s ability to display peak positive and negative offset voltage swings make it the ideal tool to quickly and accurately balance pulsed-DC ionization systems. The detachable ion collecting plate can be placed at the work height or placed within process equipment to evaluate ionizers while in use. Model 268A-1T incorporates an adjustable stop voltage for decay tests to accommodate specialized needs. This option allows the user to set the timer stop voltage at any level from 0 V to 1000 V.
Features：
Easiest, most reliable way to check effectiveness of all ionization-type static control systems
Meets ESD Association Standard
ANSI / ESD STM 3.1
Removable, cable-connected plate/ probe permits precise positioning and remote monitoring
Separate time and voltage displays for decay rate analysis
Recorder output for permanent records and unattended operation
Two ranges measure from 0 to ±5kV
Dramatically demonstrates induced charges and human body potential
Charged Plate/Probe Assembly
Capacitance of total discharge test circuit with plate: 20 ±2 picofarads
Plate self-discharge rate:<10% at 1 KV within 5 minutes
Dimensions: 6 x 6 inches (15.2 x 15.2 cm)
Power Supply
Maximum output: ±6000 volts
Available plate charging voltages: ±1000 V and ±5000 V, continuously adjustable from 1100 to >5000 V
Electrostatic Fieldmeter
Ranges selectable: 0 to ±5000 V, 0 to ±2000 V
Accuracy: Better than 2%
Drift: <0.4% per hour, noncumulative after 10 minutes stabilization, TYP.
Speed of response: <100 msec from 10% to 90% of full scale in either range
Bandwidth: 6 Hz
Output: 1/1000 of plate voltage
Timer
Limits: 1.0 kV/100 V or 5.0 kV/500 V(user selectable)
Max time measured: 999.9 sec (16 minutes +)
Resolution: 0.1 sec
Complete Instrument
Power: 117 or 220 VAC ±10%, 50/60Hz
requirements: (factory preset), 5 watts
Dimensions: 6¾ x 6¾ x 9½ inches(17 x 17 x 24cm)
Weight: 5.5 lbs (2.3 kg)
Accessories: Manual
