Introduction
Thank you for choosing the Hioki RM9010-01, RM9010-02 Four-Point Array
Probe.To ensure your ability to get the most out of this product over the
long term, please read this manualcarefully and keep it available for future
reference.
Overview
The RM9010-01/RM9010-02 Four-Point Array Probe is the probe assembly
that can plug into the RM3545, RM3545-01, and RM3545-02 Resistance
Meter to perform the four-point probe resistivity measurements. You can
employ the four-point probe method to measure resistivity and conductivity
using the PC application designed for the RM3545 exclusively. The
application can be installed using the installer contained in the CD that came
with the instrument.
Initial Inspection
When you open the package, carefully inspect the product to ensure
that everything is in good condition, and that no damage occurred during
shipping. If the product seems to have been damaged or does not work as
specied, contact your authorized Hioki distributor or reseller.
Maintenance and Service
• To clean the product, wipe it gently with a soft cloth moistened with water or
mild detergent. Never use solvents such as benzene, alcohol, acetone, ether,
ketones, thinners or gasoline, as they can deform and discolor the case.
• If the product seems to be malfunctioning, contact your authorized Hioki
distributor or reseller.
Observe the following when shipping the product.
• Use the packaging in which the product was initially delivered and then
pack that in an additional box. Accidental damage suered in transit is not
covered by the warranty.
• Attach a description of the malfunction when sending the product for repair.
Safety notations
In this manual, the symbol indicates particularly important
information that the user should read before using the product.
In this document, the severity levels of risk and hazard are classied as
follows.
DANGER Indicates an imminently hazardous situation that, if not
avoided, will result in death or serious injury.
CAUTION Indicates a potentially hazardous situation that, if not
avoided, could result in minor or moderate injury.
Safety Information
Carefully read the instruction manual of Resistance Meter as well as the
following safety notes before using the products.
DANGER
Mishandling the product could result in bodily injury or
even death, as well as damage to the product. Familiarize
yourself with the instructions and precautions in this
manual before use.
Precautions for Use
Observe the following precautionary information to ensure that the product
can be used safely and in a manner that allows it to perform as described in
its specications.
DANGER
•To prevent an electric shock, be careful to avoid shorting
live lines with the probe tip.
•Do not use the product to measure circuits that exceed
its ratings or specications. Damage to the product or
overheating can cause bodily injury.
•Do not use the product where it may be exposed to oil,
chemicals, or solvents. Contact with these substances
may cause cracking in the product, resulting in damage
or an electric shock.
•To prevent an electric shock and short-circuit, turn o all
the instruments before connecting probes.
CAUTION
• To prevent damage due to snapped wires, do not bend or pull
the base of the probes.
CAUTION
• To avoid damage to the product, do not subject it to vibration or
mechanical shock during transportation and handling. Exercise
particular care to avoid subjecting the product to mechanical shock,
for example, by dropping.
• Do not curl the cable near the cable lock. It may damage the core
wire or the covering.
• Do not bend it continuously.
Part Names
RM9010-01
Conductive contact pins
(5.0 mm pitches)
Cable
Guard plug
Red
Black
SENSE connectors
SOURCE connectors
Protective cover
RM9010-02
Conductive contact pins
(1.5 mm pitches)
Cable
Cable lock
Protective covers are placed over the pins for protection
during transport. Remove the sleeve before use.
SENSE connectors
Red
Black
SOURCE connectors
Guard plug
Protective cover
Enlarged view of pins
RM9010-01 RM9010-02
3.9
φ0.77 5.0
Unit: mm
2.55
1.5
φ0.5
Procedure
Preliminary Checks
Check the product for any damage that may have occurred during storage or
shipping, and perform functional checks before use. If you nd any damage
to the product, please contact your authorized Hioki distributor or reseller for
repair.
Points to check include the pin operation and whether the pins and cable lock
are loose. As loose screwing of the cable lock and other components can
result in damage, be sure to tighten them securely before use.
DANGER
Conrm that the insulation on cables are undamaged and
that no bare conductors are improperly exposed before
use. If you nd any damage to the product that leads to
an electric shock, please contact your authorized Hioki
distributor or reseller for repair.
1
Make sure the instrument to which the probe is being connected
turned o.
2
Connect the probe to the input terminal of the
instrument.
Plug the connectors into the instrument’s
measurement terminals, observing that the red
connector’s triangle mark is aligned with the
instrument’s red triangle mark, and the black
connector’s one with the black one. Next, insert the
guard plug into the GUARD terminal.
3
Place conductive contact pins into contact with an object under
measurement.
Attach the protective sleeve when not in use.
Specications
Probe material Base material Beryllium copper
Plating Gold (primary nickel plating)
Probe tip shape Spherical
Probe array Collinear
Spacing between
adjacent probes
RM9010-01 5.0 mm ±0.1 mm
(with every probe thrust against an object)
RM9010-02 1.5 mm ±0.1 mm
(with every probe thrust against an object)
Insulation
resistance
between adjacent
probes
10 GΩor more for an applied voltage of 25 V at an
ambient temperature of 23°C and relative humidity
of 35% RH (reference value)
Probe spring force
(per spring)
RM9010-01 About 1.25 N
(with every probe thrust against an object)
RM9010-02 About 0.85 N
(with every probe thrust against an object)
Maximum rated
terminal-to-ground
voltage
30 V AC rms or less, 42.4 V AC peak or less, 60 V
DC or less
Rated current RM9010-01 3 A AC/DC continuous
RM9010-02 1.5 A AC/DC continuous
Operating
temperature and
humidity range
0°C to 40°C (32°F to 104°F), 80% RH or less
(non-condensing)
Storage
temperature and
humidity range
−10°C to 50°C (14°F to 122°F), 80% RH or less
(non-condensing)
Operating
environment
Indoors, pollution degree 2,
operating altitude: up to 2000 m (6562 ft.)
Dimensions About 1500 mm (59.06″)
Weight RM9010-01 About 200 g (7.1 oz.)
RM9010-02 About 150 g (5.3 oz.)
Product warranty
period
1 year
Accessories Instruction Manual
CD (Application software)
Replacing the Tip Pin
You can replace conductive contact pins that have been broken or worn with
new ones.
To order the conductive contact pins, please contact your authorized Hioki
distributor or reseller.
You will need: long-nose pliers, tweezers
1
Turn o the instrument and remove the measurement probe.
2
Pull out a conductive contact pin you wish to replace with long-
nose pliers.
3
Insert a new conductive contact pin into the socket and push
the pin with tweezers until the pin tip is ush with the pin-base
surface.
RM9010-01 RM9010-02
Pin-base surface
Socket
Pin-base surface
Socket
4
Check the products for proper operation.
Before putting the products to practical use, measure several objects
of known resistance to check if the products can yield acceptable
measured values.
FOUR-POINT ARRAY PROBE
Instruction Manual
June 2022 Revised edition 2
RM9010A960-02 22-06H
RM9010-01
RM9010-02
EN
