Trek's Surface Resistance Meter (Model 152) is a lightweight, portable unit designed to precisely measure surface resistance on a wide variety of of conductive, dissipative, and insulative materials. It features exceptional measurement accuracy, wide measurement ranges, and multiple probe configuration options.

Model 152 SURFACE resistance METER

The Trek Model 152 Surface Resistance Meter is designed to measure surface resistance on a wide varieties of conductive, dissipative, and insulative materials. The Model 152 employs a measurement technique which conforms to several ANSI/ESD Association standards for measuring surface resistance and surface resistivity including ANSI/ESD-STM2.1 for garments, STM4.1 for work surfaces, STM7.1 for flooring, STM11.11 for planar materials, and STM 11.13 for two point measurement. A variety of measuring probe electrode configurations are available for making surface resistance or surface resistivity measurements.

The Model 152 features exceptional measurement accuracy and wide measurement ranges of 10 E3 to 10 E13 ohms using point-to-point probes or the two-point resistance probe for small surface measurement, and 10 E4 to 10 E14 ohms/square using the concentric ring probe. Measured resistance values are clearly displayed on a high-contrast LCD display using scientific notation.

The electrode test voltage for the measurement probe(s) is switch selectable for 10 V or 100 V operation to conform to the individual requirements of the ESD Association standards and testing conditions. The selected test voltage is indicated on the LCD display.

The exclusive Trek Model 152P-CR concentric ring measuring probe contains a preamplifier which eliminates the usual noise, stray pickup, and long settling time associated with other type probe designs, therefore providing ease of operation even at very high resistance values. The Model 152 will detect the connection of the active concentric ring probe, automatically adjust the measuring range, and indicate values in ohms/square on the LCD display.

The Model 152 is light-weight and portable, and can be operated from internal batteries or connected to an AC line power source using a battery eliminator.

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PERFORMANCE

• Meter Measurement Capability
  10 E3 to 10 E13 ohms.
  (extends to 10E14 ohms using the Concentric Ring probe).
• Surface Resistivity / Surface Resistance Probe Measurement Ranges
  • Concentric Ring Probe
    10 E4 to 10 E14 ohms/square.
  • Point-to-Point Probes
    10 E3 to 10 E13 ohms.
  • Two-Point Resistance Probe
    10 E3 to 10 E13 ohms.
• Measurement Accuracy (of reading)
  At 25 °C ±10 °C at 20% to 70% RH:
  • Concentric Ring Probe (152P-CR)
    10 E4 to 10 E13 ohms/square,
    ±5% of LCD reading,
    10 E14 ohms/square,
    ±8% of LCD reading.
  • Point-to-Point Probes (152AP-5P)
    10 E3 to 10 E12 ohm range,
    ±5% of LCD reading,
    10 E13 ohm range,
    ±8% of LCD reading.
  • Two-Point Resistance Probe (152P-2P)
    10 E3 to 10 E11 ohm range,
    ±5% of LCD reading,
    10 E12 to 10 E13 ohm range,
    ±10% of LCD reading.
• Meter Probe Electrode Test Voltage
  User selectable for 10 V or 100 V, ±2%.
• Test Current Limit
  Limited to less than 13 mA in the 10 V range and less than 1.7 mA in the 100 V range.
• Test Probes (purchased separately)
  • A) Trek Model 152AP-5P 2.27 kg. (5 lb.) test probes (set of two probes) are available for performing resistance measurements per ANSI/ESD-STM4.1 standards (point-to-point or surface resistance measurements).
  • B) Trek Model 152P-CR 2.27 kg.(5 lb.) concentric ring test probe contains a preamplifier for performing surface resistance/surface resistivity measurements per ANSI/ESD-STM11-11 standards.
    
    The exclusive Trek Model 152P-CR concentric ring measuring probe contains a pre-amplifier which eliminates the usual noise, stray pick-up, and long settling time associated with other type probe designs, therefore providing ease of operation even at very high resistance values.
  • C) Trek Model 152P-2P probe performs resistivity measurements on surface areas too small to be measured using conventional probes.

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PRODUCT FEATURES

• Surface Resistance/Surface Resistivity Probe Detection
  The Model 152 will detect the connection of the active concentric ring probe and automatically adjust the measuring range and indicate values in ohms/square on the LCD display.
• LCD Display
  Three digits plus two digit exponent (scientific notation)
• Low Battery Indicator
  LCD message for low battery
• Test Voltage Range Indicator
  User selectable, either 10 V or 100 V
• Automatic Shutoff
  If the unit is left idle for longer than 10 minutes, the unit automatically turns off

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POWER REQUIREMENTS

• Battery Operation
  Two (2) 9 Volt batteries provide 6 hours of power for portable operation.
• AC Line Operation
  Use the optional AC to DC adapter. The adapter output connector is a female type 2.1 mm DC power plug for 15-18 V DC at 350 mA.

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SURFACE RESISTANCE METER PROBES AVAILABLE

• (1) 2.27 kg (5 lb.) Concentric Ring Probe.
  Model 152P-CR
  [5.45" H x 3.25" dia. (138.5 mm H x 82.6 mm dia.)]
• (2) 2.27 kg. (5 lb.) Point-to-Point Probes.
  Model 152AP-5P
  [Each: 3.32" H x 2.85" dia. (84.3 mm H x 72.3 mm dia.)]
• Two-Point Resistance Probe for small surface area measurements.
  Model 152P-2P
  [6.4" H x 0.75" dia. (163 mm H x 19 mm dia.)]

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ACCESSORIES

• Accessories Supplied
  • Operator’s Manual, ground cord, and (2) 9 V batteries.
• Accessories Available
  • 115 V AC to 15 V DC, AC adapter/eliminator, International AC Adapter kit (90-260 V), and carrying case.

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GENERAL

• The Model 152 Resistance Meter conforms to the following ANSI/ESD Association Standards for measuring surface resistance and surface resistivity:
  • STM2.1 Garments.
  • STM4.1 Work surfaces-resistive characterization.
  • STM7.1 Flooring materials.
  • STM11.11 Surface resistance measurements of static dissipative planar materials.
  • STM 11.13 Standard test method.
• Instrument Dimensions
  180 mm H x 100 mm W x 43.7 mm D
  (7" H x 4" W x 1.75" D)
• Instrument Weight
  Approximately 0.5 kg (1 lb) with batteries.
• Environmental Operating Range
  Temperature
  15 °C to 35 °C.
  Relative Humidity
  5% to 80%, noncondensing.

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CERTIFICATION

TREK, INC. certifies that each Model 152 is tested and calibrated to specifications using measurement equipment traceable to the National Institute of Standards and Technology or traceable to consensus standards A Certificate of Calibration accompanies each instrument when it is shipped from the factory.

All specifications are subject to change.

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