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Description
Monroe Model 292 Digital Surface Resistance Test Kit is a portable, versatile, instrument designed
to accurately measure resistance between two points (RTT), surface to ground (RTG), and surface
resistivity in accordance with EOS/ESD Association standard S-4.1. In addition, the meter measures
ambient temperature and relative humidity.
The Surface Resistance Meter is designed to make measurements in accordance with specified test
methods on:
Work surfaces – ANSI/ESD S4.1 Work surfaces – Resistance Measurements
Floors – ANSI/ESD S7.1 – Resistive Characterization of Materials Floor Materials
Footwear – ANSI/ESD S9.1 – Footwear- Resistive Characterization
Garments – ANSI/ESD STM 2.1 Garments
Seating –ANSI/ ESD STM 12.1 Seating – Resistive Measurement
Floor/Footwear – ANSI/ESD STM 97.1 Floor Materials and Footwear Resistance
Measurement in Combination with a Person
Workstations – ANSI/ESD-AVD 53.1 ESD Protective Workstations
Electrification Period
The 292 Surface Resistance Test Kit provides the proper electrification period of 15 seconds
per ANSI/ESD S4.1.
Liquid Crystal Display (LCD)
A 3.5 digit 9/16” high, liquid crystal display provides easy to read measurements directly from the
meter. No interpretations or calculations are required. Surface resistance ohm values are
expressed by the LCD and an illuminated LED which indicates the reading’s exponential value. For
example: if the LCD reads 6.52 and the LED adjacent to the 8 is illuminated, the measurement is
6.52 x 10
8
ohms or 652,000,000 ohms.
If the surface resistance is over 10
12
ohms, the following will appear on the LCD display:
“1._ _ _ _” indicating that the reading exceeds the unit’s capabilities.
LED Displays
Surface resistance exponents are displayed via 12 light emitting diodes (< 10
3
- >10
12
). LEDs are
color coded for quick check recognition. Five additional Function LEDs, located to the right of the
red test button, identify the measurement taken when lit. When battery voltage drops to
approximately 2 volts, one of the Function LEDs will begin to flash, indicating the need to replace the
batteries.
Test Button
The red test button activates electrical power to the meter. When the test button is depressed and
held the exponent LED is lit immediately. During the meter’s electrification period the LCD will
display the temperature in Fahrenheit for 5 seconds, the temperature in Celsius for 5 seconds, then
the Relative Humidity as a percent for 5 seconds, and then the surface resistance measurement in
decimal notation.
(2 pages)
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