Product Overview
This Portable Charged Plate Monitor from DESCO, the Desco 19494 Portable Charged Plate Monitor, is a handheld measuring instrument for checking offset voltage (ion balance) and neutralization times (decay times) of air ionizers according to ANSI/ESD SP3.3 and ESD TR53. The instrument has a built-in timer for measuring decays from ±1,000 V to ±100 V and can be changed to ±1,000 V to ±50 V via operating commands described in the manufacturer's manual.Features
- Handheld unit for measuring offset voltage and discharge times.
- Integrated timer measures neutralization time from ±1,000 V to ±100 V (standard) and optionally from ±1,000 V to ±50 V.
- 180-degree rotating sensor head with a 2.75" x 1.25" measuring plate for readings at various angles.
- NIST-calibrated unit.
- Power supply: two AA batteries.
- Comes with ground cord and soft carrying case.
Documentation
Technical operating and maintenance instructions, as well as safety instructions, can be found in the manufacturer's manual. See manufacturer's data sheet.Typical Applications
- Checking offset voltage (ion balance) on ionizers using the I.B. measurement function.
- Measuring neutralization time (decay) for both positive and negative charge with +DECAY and -DECAY settings.
Operation and Handling
The description in the manufacturer's manual states the necessity of a reliable ground connection for measurements, zero-point adjustment before each measurement, and precautions against over-range (display flashes "+1" or "-1"). The instrument must not be used in explosive or extremely humid/contaminated environments according to the manual.Specifications
- Manufacturer: DESCO
- Model / part number: Desco 19494 Portable Charged Plate Monitor
- Measurement functions: Offset voltage (I.B), +DECAY, -DECAY
- Decay measurement range: ±1,000 V to ±100 V (standard); selectable ±1,000 V to ±50 V
- Sensor head: 180° rotating
- Measuring plate: 2.75" x 1.25"
- Power: 2 × AA batteries
- Calibration: NIST-calibrated
- Origin: Made in Japan
- Included: soft case, wrist lanyard, 19499 ground cord, ground cord, 2 AA alkaline batteries
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