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PRS-812B Resistance Meter

Updated:2025-03-13

Brand: Prostat
Model: PRS-812B
Description: 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 efficie
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Product Details

PRS-812B Resistance Meter Description：

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	Illuminated Decade LED
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)