Prostat PRS-801B User manual

USER MANUAL
RESISTANCE METER
PRS-801B PRS-812B

1
Table of Contents
Important Safety Information
2
INTRODUCTION
4
GETTING STARTED
6
Battery Pack
6
Pushbuttons
8
Display Features
9
MEASUREMENT CONNECTIONS
11
OPERATION
12
Main Power
12
Measurements Modes
12
Making a Measurement
14
Test Voltages
15
Electrification Period
15
Resistance Measurements under 0.10 ohm
16
Resistance Measurements above 1.00E+12
16
Exponential and Ohmic Measurements
17
Saving a Measurement
17
Accessing the internal Memory
17
Erase Measurement from Internal Memory
18
FUNCTIONS
18
Null Adjustment for Lead Resistance
18
Clear the entire Memory
19
Enable to Disable Audible Prompts
19
Changing LED Colors
19
COMMUNICATION WITH A PC
20
Installation of the Drivers
20
Connect 2.0 User Interface
21
Installation of the Connect 2.0 utility software
22
Starting the Utility
22
Setting the Date and Time of your PRS-801B
22
Download data from your PRS-801B
23
Copy data to Microsoft® Excel®
24
Automatically download data to Connect 2.0
24
Backup data feature
25
MAINTENANCE AND USER ADJUSTMENT
25
Maintenance
25
Storage
26
Battery Replacement
26
Travelling Information
27
Calibration Information
28
Replacement Parts and Accessories
28
TROUBLESHOOTING
29

2
Warning! Important Safety Information
Please read the Safety Instructions before using your Meter.
Refer to the table below for an explanation of symbols which may be on your Prostat product.
In this manual, a Warning identifies conditions and actions that pose hazards to the user. A Caution
identifies conditions and actions that may damage the Meter or the equipment under test.
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK). THERE ARE NO
USER SERVICEABLE PARTS INSIDE. REFER ALL
SERVICING TO QUALIFIED PERSONNEL.
AC voltage: Rated voltage marked
with this symbol is AC voltage.
This symbol indicates that high
voltage is present inside. It is
dangerous to make any kind of
contact with any internal part of
this product.
DC voltage: Rated voltage marked
with this symbol is DC voltage.
This symbol indicates that this
product has included important
literature concerning operation
and maintenance.
Caution. Consult instructions for
use: This symbol instructs the user
to consult the user manual for
further safety related information.
This symbol indicates earth
ground.
This symbol represents capacitance.
This symbol indicates battery
safety approval.
Conforms to European Union
directives.
This product contains a Lithium-ion battery that successfully passed UN 38.3 testing
ensure the safety of lithium ion or lithium metal batteries during shipping.
This product contains a Lithium-ion battery. Do not mix with solid waste stream. Spent
batteries should be disposed of by a qualified recycler or hazardous materials handler per
local regulations.
This product complies with the WEEE Directive marking requirements. The affixed label
indicates that you must not discard this electrical/electronic product in domestic
household waste. Product Category: With reference to the equipment types in the WEEE
Directive Annex I, this product is classed as category 9 "Monitoring and Control
Instrumentation" product. Do not dispose of this product as unsorted municipal waste.
This apparatus uses a battery pack. In your community, there might be environmental regulations
that require you to dispose of batteries properly. Please contact your local authorities for disposal
or recycling information.
Never insert anything metallic into the open parts of this apparatus. This may cause a danger of
electric shock.

3
To avoid electric shock, never touch the inside of this apparatus. Only a qualified technician
should open this apparatus.
Do not drop or strike the product. If the product is damaged, contact a Prostat Authorized Service
Center.
This equipment is intended for use in electrostatic processes that are free from water, oil, solvent
and other conductive contaminants. Exposure to such contaminants will cause failure of the
electrical insulation system in the product
This equipment may require proper grounding for accurate measurement in certain ranges.
This equipment may get damaged if dropped. In such an event, it should be carefully
examined and any necessary repairs be made by an authorized technician.
Do not exert any pressure on the LCD display from the top.
In rare cases cleaning the PRS-801B, case and display with a slightly dampened cloth may be
required. Should this be required, use a very weak solution on of liquid soap and water. The cloth
should be barely damp. DO NOT allow the instrument to become wet with the cleaning solution.
DO NOT allow cleaning solution to enter the unit through apparatus openings. Should the unit
become damaged with cleaning solutions, the warranty is voided.
Do not expose this apparatus to dripping or splashing.
Do not dispose of batteries in a fire.
Do not short-circuit, disassemble, or overheat the batteries.
The Meter complies with:
Document
PRS-801B
PRS-812B
ESD TR53 Compliance Verification


ANSI/ESD S1.1 Wrist Straps


ANSI/ESD S4.1 Worksurfaces


ANSI/ESD STM9.1 Footwear


ANSI/ESD SP10.1 Automated Handling Equipment


ANSI/ESD STM11.12 Volume Resistance


ANSI/ESD STM12.1 Seating


ANSI/ESD S20.20


ANSI/ESD STM2.1 Garments


ANSI/ESD S7.1 Floor Materials


ANSI/ESD SP9.2 Foot Grounders


ANSI/ESD STM11.11 Surface Resistance


ANSI/ESD STM11.13 Two-Point Resistance


ANSI/ESD S13.1 Soldering Tools



4
01 INTRODUCTION
The PRS-801B Resistance System Set is a wide range meter capable of measuring resistance from 0.01
ohm to 2.00E+14 ohms (200 Teraohm). The PRS-801B uses a constant test voltage system that is
extremely stable and consistent with lab level, bench top instruments.
The PRS-801B is one of the fastest resistance meter on the market. Its specified electrification period
(EP) from 0 to 1.0×1012 ohms is 15 seconds in accordance with ANSI/ESD STM 11.11 Surface
Resistance of Planar Materials. Furthermore, its EP is automatically adjusted to insure a stable
measurement is displayed. Laboratory tests confirm the PRS-801B can measure from 0 to 1.0×1012
ohms in 2.5 seconds.
Up to 999 measurements can be stored and recalled from the meter's internal memory. Included in
the memory is the resistance value, the test voltage, the electrification period and the minimum,
maximum and average of the values stored. Additionally, the system includes the Prostat Connect 2.0
Utility Software allowing you to download the internal memory from the PRS-801B into an Excel®
Spreadsheet on your computer.
The PRS-812B’s accurate wide range of 0.10 ohms to 1.00E+12 ohms, offers exceptional flexibility in
measurement applications. The PRS-812B has Automatic, Manual and Auto-Manual operational
modes, plus exponential display or standard numeric display in Ω, KΩ, MΩ, GΩ and TΩ.
Measurements are summarized in decades using multiple LED’s from <102to >1012. Its internal
memory allows to store up to 120 measurements, and will display the minimum, maximum and
average. The PRS-812B meets the requirements of ANSI/ESD S4.1 and ANSI/ESD S7.1.
Both the PRS-801B and PRS-812B use a Li-ion battery pack, rechargeable via USB. Battery life exceed
480 hours when measuring in Auto-Manual mode and allows you to typically make approximately
8,000 measurements.

5
Resistance Meter Contents
Table 1 is a list of the items included with your Resistance Meter.
Part No.
Description
PRS-801B
PRS-812B
Prostat Resistance Meter


801B-012
Rechargeable Li-ion Battery Pack


800LB
10 foot Silicone Test Lead - Black


800LR
10 foot Silicone Test Lead - Red


800PSL
Premium Shielded Test Lead

800TVL
High Resistance Voltage Test Lead

800S
Test Lead Shunt


PTB-915
Audit Test Bed


PRS-801BC
Bulldog Clip


PSI-870MAC
Metal Alligator Clip (2)


800B-001
AC/DC Power Supply with Multi-Blade
Input


800B-002
USB 2.0 A to Micro-B Cable


Connect 2.0 Software for Windows®

Table 1. Packing List
CAUTION!
Storage or use of this instrument in high humidity, damp or wet conditions may cause damage to
the instrument’s electronic circuits, effect performance and can increase the possibility of
personnel shock or arc discharge.
WARNING!
Improper handling and use of energized circuits may cause arc discharge, which in turn may cause
the ignition on of combustible materials or fumes. Do not use exposed energized circuits in
flammable areas.

6
CAUTION!
The resistance meter contains electrostatic discharge sensitive (ESDS) components and includes
precision alignment of circuit elements. Only Prostat trained and qualified instrument repair
personnel should perform service.
WARNING!
To prevent electrical shock, do not touch energized circuits, leads or fixtures while grounded.
Use pre-tested ground connections meeting local safety codes for personnel earth grounding.
Refer to National Electrical Codes and ESD Association Standard ANSI/ESD S6.1 Grounding for
information and procedures. Only qualified personnel should conduct ground test measurements.
02 GETTING STARTED
Battery Pack
The resistance meter operates using a 3 cell Li-ion battery pack. To comply with IATA shipping
regulations, the meter is shipped at a 30% state of charge (SoC). Completely discharged batteries can
cause the resistance meter not to start up when it is turned on. To reach full charge, charge for 2-3
hours with the meter turned off.
When fully charged, the batteries provide approximately 8,000 measurements or up to 48 hours of
use when measuring at 100 volts, in Continuous Mode. Battery life exceeds this when used in Auto
and Manual modes.
The battery status shows as an icon in the top left corner of the display:
- Indicates full charge
- Indicates approx. 20% of operations remains
When the battery capacity decreases to ≤ 20%, the bottom battery level segment will be flashing at 2
Hz rate.
To charge the batteries and power the instrument, use one of the two options as shown in Figure 1
and Figure 2.

7
Figure 1. Connect the provided charger to an outlet to charge your Resistance Meter
Figure 2. Connect the provided Micro USB Cable to a computer to charge your Resistance Meter
It is recommended to turn off the meter before plugging in the USB cable or wall charger. Once
charging has begun, you may leave the meter in its off position, or leave it on. The meter is capable of
making measurements while charging.
While the battery is charging, the state is represented by battery segments that grow from 1 to 5
segments in a 2.5 second period. This pattern is repeated until the battery is fully charged.

8
Resistance Meter Pushbuttons
The resistance meter uses twelve (12) button switches to perform many functions:
Button
Color
Name
Function
White
POWER
Press and hold for 2 seconds (long press) to turn
the meter ON or OFF.
White
MEASUREMENT
MODE
Selects the measuring mode between Auto,
Manual, Auto-Manual and Continuous.
White
FUNCTION
Enters Settings for different functions.
White
EXPONENTIONAL
OHMIC
Toggles between scientific (0.00E00) and ohmic
(0.00 Ω) measurements.
White
TEST VOLTAGE
Press to select between less than 10 volts, 10
volts and 100 volts (in Manual Mode only)
Red
RECORD
RECALL
Press to enter the memory bank of the meter.
Press again to display MIN, MAX and AVG.
White
CLEAR
Use to clear 1 or many measurements stored
into memory.
White
SAVE
Press at the end of a stable measurement to save
into memory.
Yellow
RESET
Stops and resets the meter during a
measurement.
Green
TEST
Press to make a measurement.
Table 2. Resistance Meter Pushbuttons
E / Ω
FUNC.
MODE
TEST
VOLTS
CLEAR
RECORD
RECALL
SAVE
RESET
TEST

9
Display Features
The meter uses a large 6-digit HTN LCD display. The four-color segmented display consist of a battery
status icon, electrification counter that is also used as the memory location, and a large measurement
area in scientific or ohmic.
Figure 3. Display Features
4
1
9
2
3
10
7
8
11
6
5
12

10
Number
Feature
Indication
Indicates battery life status.
MEASUREMENT
MODE
Toggles between Continuous, Auto, Manual and Auto-
Manual modes.
Toggles between Record when measuring, and Recall
when accessing the memory.
MEMORY INDICATOR
Displayed when in Recall. FULL is displayed when the
memory is full.
EP
MEMORY LOCATION
Indicated the number of Seconds for the Electrification
Period when in Record. Indicates the memory location
when in Recall.
MIN, MAX, AVG
Displays the Minimum value, Maximum value, and
Average of the measurements in Memory.
SECONDS INDICATION
Displayed while in Record.
Indicated the meter is ready for operation.
Indicates a stable measurement was attained.
OHMIC RANGE
Indicates the ohmic range of a measurement while in
Record. Active only when Ωdisplay format is selected.
APPLIED TEST
VOLTAGE
Displays which voltage being applied during a
measurement.
Decimal point.
Digital numerical value.
Table 3. Display Features
12
11
10
9
7
6
5
4
2
1
8
3

11
03 MEASUREMENT CONNECTIONS
The resistance meter has either two or three 4 mm safety-shielded banana jack inputs. Receptacles
are separated by ¾ inch spacing (see Figures 4 and 5) to accommodate dual banana plug connectors.
These connectors are used for the Prostat PRF-912B and PRF-922B microprobe resistance
measurement fixtures.
Figure 4. Input Connections for PRS-801B Figure 5. Input Connections for PRS-812B
Red Input
The red input is the Positive Test Voltage input. Connect the Prostat red lead to it.
Black Input
The black input is the Negative Current Sensing input. Connect the Prostat black lead to it.
Green Input (PRS-801B only)
The green input is used for shielding and grounding. Recommended for high resistance
measurements.
NOTE
To make measurements in the E-2 range (from 0.01 to 0.09Ω), you must short the leads together
using the supplied shunt (Prostat 800S) and set the meter to Manual Mode.

12
Range
Test Leads
Mode
800LB
800LR
800TVL
800PSL
AUTO
MANUAL
AUTO-
MANUAL
CONTINIOUS
1.00E-02 to 9.99E-02
0.01 to 0.09 Ω


1.00E-1 to 9.99E+11
0.10 to 999 GΩ






1.00E+12 to 2.00E+14
1 TΩto 200 TΩ





Table 4. Recommended Mode and Test Leads for each resistance range
04 OPERATION
This meter is battery operated, do not connect with any other utility line. The lithium-ion battery pack
is usually already installed when shipped. If you received it separately, you can easily install it inside
the battery compartment.
Main Power
To turn the resistance meter on:
1. Press and hold for 2 seconds to turn the meter ON.
Note: If the battery level is less than 8%, the meter will not turn on. Charge the battery until
the level reaches at least 8%.
2. The LCD displays the current firmware version number.
3. The LED’s will illuminate incrementally from left to right.
4. will display for 2 seconds, then enter AUTO mode.
The resistance meter turns on within 7 seconds in its last setup configuration.
Measurement Modes
The PRS-801B uses 4 basic measurements modes, where the PRS-812B uses 3, as described in Table 5.
The Mode currently selected is displayed next to the battery status icon.

13
MODE
RESISTANCE RANGE
TEST VOLTAGE
NOTES
Automatic
Automatic
Automatic
@<10V: 0.01 to <1.00E+04Ω
@ 10V: 1.00E+04 to <1.00E+06Ω
@100V: 1.00E+06 to 2.00E+14Ω
Manual
Manual
Manual or
Automatic
@<10V: 0.01 to <1.00E+03Ω
@ 10V: 1.00E+03 to <1.00E+11Ω
@100V: 1.00E+06 to 2.00E+14Ω
Auto-Manual
Manual Start
Automatic Run
Automatic
@<10V: 0.01 to <1.00E+04Ω
@ 10V: 1.00E+04 to <1.00E+06Ω
@100V: 1.00E+06 to 2.00E+14Ω
Continuous
(PRS-801B only)
Automatic
Automatic
@<10V: 0.01 to <1.00E+04Ω
@ 10V: 1.00E+04 to <1.00E+06Ω
@100V: 1.00E+06 to 2.00E+14Ω
Table 5. Measurement Modes
Automatic Mode
When the resistance meter is turned ON, the default measurement mode is AUTO. This mode
automatically controls the resistance range, test voltage and electrification period.
Manual Mode
Press to switch mode to MANUAL. This mode allows the user to manually select the Resistance
Range and/or Test Voltage. If the user does not set the test voltage, the test voltage is to be
automatically set based on the selected resistance range. See Table 4 for test voltages/resistance
ranges.
Use the and arrows to select the desired resistance range. The appropriate LED illuminates to
indicate the selected decade. Press to select the desired Test Voltage.
Auto-Manual Mode
Press to switch mode to AUTO-MANUAL. This mode allows the user to manually select the
Resistance Range. However, the Test Voltage is automatic. After the initial measurement in Auto-
Manual is complete, subsequent measurements start from last measurement value.

14
Continuous Mode (PRS-801B only)
Press to switch mode to CONTINUOUS. This is the same as for Auto. However, the
Electrification Period is controlled by the user. The Electrification Period continues until SAVE, RESET
or CLEAR is pressed.
If the Electrification Period exceeds 999 seconds, the SECONDS digits will wrap and go back to 000.
The meter’s firmware keeps track of the actual Electrification Period. For example, the meter may
store 1005 seconds.
Making a Measurement
To make a measurement, follow these steps:
1. Press and hold for 2 seconds to turn the meter ON.
2. By default, the active mode is AUTO.
3. Press to toggle between the different modes.
4. Press . The meter will begin measuring. Depending on the resistance range under test,
the Electrification Period will automatically determine the best wait time for optimum
accuracy. Refer to Table 9 to see what the EP is for each of the range.
5. Once a measurement is stable, will be displayed.
6. To proceed with the next measurement, simply press again.
Tables 6 and 7are lists of visible readings and what the symbols mean during a live measurement:
Table 6. Display in scientific format Table 7. Display in ohmic format
Symbol
Description
AUTO
Measurement Mode
Ω
Measurement in ohms
1.00E02 = 100 ohms
<10V
Test voltage applied during
measurement
SECONDS
Electrification period in seconds
RECORD
Live Measurement
Symbol
Description
AUTO
MANUAL
Measurement Mode
GΩ
Measurement in gigaohms
1 gigaohm = 109ohms
100V
Test voltage applied during
measurement
SECONDS
Electrification period in seconds
RECORD
Live Measurement

15
Tables 8 and 9 are lists of visible readings and what the symbols mean when accessing the memory:
Table 8. Display in scientific format Table 9. Display in ohmic format
Test Voltages
In order to make a resistance measurement, a test voltage is being applied. Tables 10 and 11 list the applied
test voltage for each resistance range:
Electrification Period
When making a resistance measurement, the meter needs a period of time to stabilize and make sure the
measurement displayed is the most accurate measurement.
Table 12 list the electrification period (EP) for each resistance range:
Symbol
Description
MEMORY
Indicates how many data sets in
memory
MAX
The highest measurement stored in
memory (MIN also available)
Ω
Measurement in ohms
1.00E12 = 1 teraohm
RECALL
Access to internal memory
Symbol
Description
MEMORY
FULL
Indicates memory is full
AVG
The average of all measurement in
memory
GΩ
Measurement in teraohms
1 teraohm = 1012 ohms
RECALL
Access to internal memory
RESISTANCE RANGE
APPLIED TEST VOLTAGE
1.00E-2 to 9.99E3
<10 Volts (variable)
1.00E4 to 9.99E5
10 Volts (fixed)
≥1.00E6
100 Volts (fixed)
Table 10. Applied Test Voltage in AUTO, CONTINUOUS
AND AUTO MANUAL Mode
RESISTANCE RANGE
APPLIED TEST VOLTAGE
1.00E-2 to 1.00E9
Variable
1.00E3 to 1.00E10
10 Volts (fixed)
≥1.00E5
100 Volts (fixed)
Table 11. Applied Test Voltage in MANUAL Mode

16
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 to <1.00E13
Variable
15 seconds
1.00E13 to <1.00E14
Variable
60 seconds
>1.00E14
Variable
60 seconds
Table 12. Electrification period for each resistance range
Resistance Measurements under 0.10 ohm (PRS-801B only)
The meter is capable of making very low resistance measurements. For measurements with the PRS-
801B that are under 0.10 ohm, follow these steps:
1. Press and hold for 2 seconds to turn the meter ON.
2. Press to select MANUAL modes.
3. Using the 800PSL and 800TVL Test Leads, you must null the leads resistance (see Null
Adjustment for Lead Resistance for instructions).
4. Make sure to ground the green lead of the 800PSL to earth ground.
5. Press . The meter will begin measuring.
Resistance Measurements 1.00E+12 (PRS-801B only)
The PRS-801B is a wide range resistance meter capable of making measurement up to 2.00E+14.
To get the most accurate measurement in those ranges, the Electrification Period is extended from 15
seconds to 60 seconds in those ranges. This allows the meter to stabilize and find the most accurate
measurement.
Many factors may affect stability in those ranges. Here are some considerations when making
measurement greater than 1.00E+12 ohms:
The electrification period need to be extended to 60 seconds or greater.
Use the meter in CONTINUOUS mode and observer the display for stable measurement.
Make sure the operator is grounded via ESD footwear/flooring or using a wrist strap.
Use the Prostat 800PSL and 800TVL test leads.
Minimize contact of the test leads with grounded surfaces.
Remove all unnecessary static generators

17
For measurements with the PRS-801B that are above 1.00E+12 ohms, follow these steps:
1. Press and hold for 2 seconds to turn the meter ON.
2. Connect the 800TVL Test Lead to the red input jack of the meter.
3. Connect the 800PSL Test Lead to the black and green jacks of the meter.
4. Make sure to ground the green lead of the 800PSL to earth ground.
5. Press . The meter will begin measuring.
TIP
You can choose to make measurements in the E13 and E14 ranges in the CONTINOUS mode. In
CONTINIOUS mode, you can save the reading displayed into memory without waiting for its
electrification period.
Exponential and Ohmic Measurements
The resistance meter allows the LCD to display the measurements in either Exponential format
(0.00EXX) or in Ohmic format (0.00) using the appropriate ohmic range (Ω, KΩ, MΩ. GΩ, TΩ, PΩ).
At any point while the meter is turned ON, press to toggle between Exponential or Ohmic
format. This feature is enabled once the meter display a stable measurement. It is also enabled during
a live measurement or while scrolling through measurements saved into the memory.
Saving a Measurement
Depending on the model you have, the Resistance Meter has an internal memory capable of storing
either 999 or 120 data sets.
Each data set saved in a memory location consists of the resistance measurement, the applied test
voltage, electrification period and date & time.
To save a measurement into the internal memory, press once you have stable measurement.
A stable measurement is indicated by displaying on the LCD. Note that Ur (Under Range) or
Or (Over Range) measurements cannot be saved.
Accessing the internal Memory
You can access the memory of the resistance meter by pressing . When in memory,
will be displayed, as well as MEMORY in the upper right corner of the LCD. The memory location

18
displayed is the most recent measurement saved. The 3 digits displayed under Memory indicates the
memory location.
Use the and arrows to scroll through the saved measurements. By pressing and holding either
arrows for 2 seconds, the memory will scroll at a rate of 5 memory locations per second. By holding
the key for an additional 5 seconds, the auto-scroll rate is increased to 25 memory locations per
second.
To indicate that the memory is almost full, the word MEMORY will flash. If the memory is full, the
words MEMORY and FULL is displayed and will be flashing together. The user will not be able to save
anymore measurements until at least 1 data point is erased from memory.
Repeated presses of will cycle through MIN, MAX, AVG before returning to RECORD. The
Minimum, Maximum and Average values displayed are calculated based on the entire memory.
Erase Measurement from Internal Memory
You can erase a single measurement from the memory by using the CLEAR button. When in RECALL
mode, scroll through the saved measurements using the UP/DOWN arrows. To clear a selected
measurement, press once. The remaining data in memory is indexed down. Subsequent data
in memory fills cleared locations.
To erase the entire memory at once, please refer to the FUNCTION section below.
05 FUNCTION
The resistance meter allows the user to access some internal settings and provide some
customization. The section below describes what these are and how to set them.
Null Adjustment for Lead Resistance
To NULL lead resistance means to compensate for, or to subtract lead resistance from the
measurement so that only the item or circuit resistance being measured is displayed. This is especially
important when making low resistance measurements less than 1.0 or 2.0 ohms. Prostat leads have a
combined resistance of approximately <0.35 ohms.
To adjust the resistance meter to compensate for lead resistance, connect the leads to the
instrument and then short the leads together using the supplied shunt (Prostat 800S), and follow
these steps:
1. Press once to enter Null Adjustment function. LEAdS will be displayed.
2. Press again. Short will displayed. The <2 LED will also be illuminated.