Instrument Expert
Original factory packaging
Service Hotline：
(+86)010-52867771
Instrument Expert
Original factory packaging
Service Hotline：
(+86)010-52867771
Updated:2025-03-13
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Product Manual Datasheet
The ideal choice for the ESD Auditor
The PRS-812B Resistance Meter delivers the full-featured functionality and advanced measurement capabilities that ESD Auditors need. It puts a lot of testing power in your hands to quickly and efficiently measure resistance point-to-point (Rtt) and resistance-to-ground (Rtg) of floors, worksurfaces, carts, garments, packaging, planar material in accordance with all of the ESD Association documents for resistance measurements, such as ESD TR53, ANSI/ESD S4.1, ANSI/ESD S7.1 and ANSI/ESD STM97.1.
Fully automatic for peace of mind
The PRS-812B uses 3 modes of measurements: Automatic, Manual and Auto-Manual. When measuring in Automatic mode, the resistance range and test voltage is automatically selected for you. Auto mode gives you peace of mind and saves you time.
A very accurate resistance meter
The PRS-812B’s wide range meter offers fast, accurate resistance testing using the included high quality 10 foot test leads. The low resistance range is designed to measure from 0.10 to 1.0x104 ?.The PRS-812B also meets ANSI/ESD S20.20 and TR53 procedure requirements from 1.00x103 to 1.00x1011 ?. Measurement guidelines require accurate measurements one decade above the resistance requirements of a facility’s ESD program.
Under load test voltages
Uses constant voltage under load for 10 volts and 100 volts with an accuracy of ± .05%, meeting the requirements of ANSI/ESD S20.20 resistance testing for product qualification and compliance verification. The low resistance range uses variable voltage from 0.1 mv to 9.99 V.
Long lasting battery
The PRS-812B uses a 3 cell Li-ion battery pack that will last typically 480 hours, taking more than 8,000 measurements before you will need to charge it. Charging is accomplish without removing the battery pack, using the included USB cable and wall charger. The Micro USB cable allows you to charge the PRS-812B via the USB port of your computer. Also included is a wall charger with interchangeable AC blades for global use that includes North America, Europe, United Kingdom, Australia, and China.
Features
Wide Range Resistance: 0.10 ? to 1.00x1012 ?
Accuracy of ±2% from 1.00 ? to 9.99x1010?
Constant Test voltages 10V and 100V for specification measurements to meet international and domestic ESD measurement standards
Auto Resistance Range Control
Auto Test Voltage Control
Uses a Rechargeable Li-ion Battery Pack
Takes Approximately 8,000 Measurements on a Single Charge (480 hours typical)
120 Data Set Internal Memory
Uses Standard USB Cable for Charging
Charges in 2 Hours
2-year Limited Warranty on Main Instrument
Technical Specifications
General Specifications
| Characteristics | |
| Measuring Range | 0.10 ? to 1.00 x 1012 ? |
| Measurement Modes | Auto, Manual, Auto-Manual |
| Display |
6.9 cm x 4.8 cm (2.7” x 1.9") 6 digit - 7 segment color HTN display |
| Battery Power | Re-chargeable Li-Ion battery (included). Battery swappable through easily accessible battery door at the rear of the instrument |
| Battery Charging | Rechargeable via USB 2.0 through PC port or Wall Charger (included) |
| Battery Charge Indicator | Battery has a status indicator on instrument screen |
| Battery Charging Time | 2 hours |
| Battery Life |
480 hours typical 50 hours (of continuous use) Approximately 8,000 measurements |
| Memory Capacity | 120 data sets |
| Memory Data Sets | Data sets include resistance. |
| Data Download | N/A |
| USB | USB 2.0 A to Micro-B |
| Operating Temperature | 10°C to 30°C (50°F to 80°F) |
| Operating Relative Humidity | 0% – 85%, non-condensing |
| Operating Altitude | 2000 m |
| Storage Temperature | -30°C to +60°C (-22 °F to +140 °F) |
| Dimensions (WxHxD) |
117 mm x 188.5 mm x 48 mm 4.59 in x 7.42 in x 1.90 in |
| Weight | 500 g (1.10 lb) |
| Case Material | Polycarbonate with Rubber Side Grips |
| Color | Grey |
| Warranty | 2 Year Limited Warranty1 |
Resistance Measurement Specifications
| Measuring Range | Resolution | Accuracy1 |
| 0.10 ? to 1.00 ? | 0.01E-2 to 1.00E-2 | ±5%2 |
| 1.01 ? to 9.99 x 1010 | 1.01E0 to 9.99E10 | ±2% |
| 1.00 x 1011 to 9.99 x 1011 | 1.00E11 to 9.99E11 | ±5% |
| 1.00 x 1012 | 1.00E12 | ±20% |
Test Voltage Accuracy
| Test Voltage | Units | Resistance Range | Accuracy1 |
| .0001 – 9.99 | V | 1E-2? to <1E4? | ±0.5% |
| 10 | V | 1E4? to <1E6? | ±0.5% |
| 100 | V | 1E6? to ∞ | ±0.5% |
LED Indicators
| Resistance Measurement (?) | Illuminated Decade LED | |
| Min | Max | |
| 0 | 9.99E1 | <2 |
| 1.00E2 | 9.99E2 | 2 |
| 1.00E3 | 9.99E3 | 3 |
| 1.00E4 | 9.99E4 | 4 |
| 1.00E5 | 9.99E5 | 5 |
| 1.00E6 | 9.99E6 | 6 |
| 1.00E7 | 9.99E7 | 7 |
| 1.00E8 | 9.99E8 | 8 |
| 1.00E9 | 9.99E9 | 9 |
| 1.00E10 | 9.99E10 | 10 |
| 1.00E11 | 9.99E11 | 11 |
| 1.00E12 | 12 | |
Measurement Modes
| Mode | Resistance Range | Test Voltage | |
| Automatic | Automatic | Automatic |
@<10V: 0.01 to <1.00E+04 ? @ 10V: 1.00E+04 to <1.00E+06 ? @100V: 1.00E+06 to 1.00E+12 ? |
| Manual | Manual | Manual or Automatic |
@<10V: 0.01 to <1.00E+05 ? @ 10V: 1.00E+03 to <1.00E+09 ? @100V: 2.00E+05 to 1.00E+12 ? |
| Auto-Manual |
Manual Start Automatic Run |
Automatic |
@<10V: 0.01 to <1.00E+04 ? @ 10V: 1.00E+04 to <1.00E+06 ? @100V: 1.00E+06 to 1.00E+12 ? |
Electrification Period
| Resistance Range | Measurement Period | Minimum Electrification Period |
| .1.00E-2 ? to <1.00E6 ? | 2 seconds | 3 seconds |
| 1.00E6 ? to <1.00E12 ? | 2 seconds | 8 seconds |
| 1.00E12 ? | Variable | 15 seconds |
801B-012 Li-Ion Battery Pack
| General Specifications | |
| Battery Type | 3-cell, Rechargeable |
| Technology | Lithium-Ion Technology |
| Nominal Capacity | 2400mAh |
| Output Voltage | 3.7V |
| Performance Amp-Hour | 2.4Ah |
| Performance Watt-Hour | 8.88Wh |
| Transport Safety Certified | UN38.3 |
| IATA UN Number | UN3480 |
| IATA Class (Sub Hazard) | 9 |
| Operating Temperature |
Discharging: -20°C to 60°C (-4°F to 140°F) Charging: 0°C to 45°C (32°F to 113 °F) |
| Storage Temperature | -5°C to 35°C (-23°F to 95°F) |
| Storage Humidity | ≤75% Rh |
| Battery Pack Dimensions (WxHxD) |
53mm x 48.5mm x 15mm 2.0” x 1.9” x 0.6” |
| Weight | 65g (2.2 oz) |
Customer Service QQ
Customer Hotline：
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