INSTRUCTION MANUAL
Logger Series
3631-20 HUMIDITY LOGGER
3632-20 TEMPERATURE LOGGER
3633-20 TEMPERATURE LOGGER
3634-20 INSTRUMENTATION LOGGER
3635-24,25,26 VOLTAGE LOGGER
Contens
Introduction i
Inspection
Safety Notes
Notes on Use
i
ii
v
Chapter 1 Overview
Chapter 2 Set Up
2.1 Replacing the Battery
2.2 Power Save Function
2.3 Setting Current Time
2.4 Connecting Sensor and Cable
Chapter 3 Settings
3.1 Setting Items
3.2 Manual Setting
3.3 Setting by COMMUNICATION BASE
3.4 Connecting COMMUNICATION BASE
with Logger
Chapter 4 Specifications
Chapter 5 Maintenance and Service
1
5
5
7
9
10
15
15
18
20
21
23
35
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Introduction
Thank you for purchasing the HIOKI 3631 to 3635
Logger Series. To obtain maximum performance
from the product, please read this manual first, and
keep it handy for future reference.
Inspection
When you receive the product, inspect it carefully to
ensure that no damage occurred during shipping.
If damage is evident, or if it fails to operate
according to the specifications, contact your dealer
or Hioki representative.
General accessories
Instruction Manual
LR03 alkaline battery x 2
(built into this unit, for monitor)
Designated accessory for each logger
3631-20 9630 HUMIDITY SENSOR
3634-20 9632 CONNECTION CABLE
3635-24
3635-25
3635-26
9632 CONNECTION CABLE
i
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Inspection
ii
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Safety Notes
This manual contains information and warnings
essential for safe operation of the product and for
maintaining it in safe operating condition. Before
using the product, be sure to carefully read the
following safety notes.
WARNING
This product is designed to conform to IEC 61010
Safety Standards, and has been thoroughly tested
for safety prior to shipment. However,
mishandling during use could result in injury or
death, as well as damage to the product. Be
certain that you understand the instructions and
precautions in the manual before use. We
disclaim any responsibility for accidents or
injuries not resulting directly from product
defects.
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Safety Notes
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iii
Safety symbols
･ The symbol printed on the product
indicates that the user should refer to a
corresponding topic in the manual
(marked with the symbol) before using
the relevant function.
･ In the manual, the symbol indicates
particularly important information that the
user should read before using the
product.
Indicates DC (Direct Current).
The following symbols are used in this Instruction
Manual to indicate the relative importance of
cautions and warnings.
WARNING
presents a significant hazard that
could result in serious injury or
death to the user.
Indicates that incorrect operation
CAUTION
Indicates that incorrect operation
presents a possibility of injury to the
user or damage to the product.
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Safety Notes
iv
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Measurement categories (Overvoltage categories)
This product complies with CAT I safety requirements.
To ensure safe operation of measurement product, IEC 61010
establishes safety standards for various electrical
environments, categorized as CAT I to CAT IV, and called
measurement categories. These are defined as follows.
CAT I Secondary electrical circuits connected to an AC
CAT II Primary electrical circuits in equipment connected to
CAT III Primary electrical circuits of heavy equipment (fixed
CAT IV The circuit from the service drop to the service
electrical outlet through a transformer or similar
device.
an AC electrical outlet by a power cord (portable
tools, household appliances, etc.)
installations) connected directly to the distribution
panel, and feeders from the distribution panel to
outlets.
entrance, and to the power meter and primary
overcurrent protection device (distribution panel).
Higher-numbered categories correspond to electrical
environments with greater momentary energy. So a
measurement device designed for CAT III environments can
endure greater momentary energy than a device designed for
CAT II. Using a measurement product in an environment
designated with a higher-numbered category than that for
which the product is rated could result in a severe accident,
and must be carefully avoided.
Never use a CAT I measuring product in CAT II, III, or IV
environments. The measurement categories comply with the
Overvoltage Categories of the IEC60664 Standards.
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Safety Notes
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v
Notes on Use
Follow these precautions to ensure safe operation
and to obtain the full benefits of the various
functions.
CAUTION
･ The unit should always be operated in a range from
-20 ℃ to 70 ℃ and 80 %RH or less.
･ The 9630 HUMIDITY SENSOR should be replaced
every year. You are recommended to replace it
twelve months after opening the package.
･ If used outside the specified environmental ranges
for operation (or storage), the sensor accuracy may
deteriorate in less than one year, and accurate
measurement may not be possible.
･ If used outside the specified environmental ranges
for operation (or storage), the operation of the unit
cannot be guaranteed.
･ When the 9630 HUMIDITY SENSOR is not being
used, seal it in a plastic bag with a desiccating
agent, and store in a dark, cool place.
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Notes on Use
vi
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CAUTION
･ Take care to avoid condensation. In particular, if
there is a sudden change of temperature (for
example moving from a cold place to a warm one),
condensation is likely to occur.
･ To avoid damage or malfunction, avoid excessive
force on the tip of the 9631 Temperature Sensor
series or overly bending the leads.
･ Do not dip the unit in liquids (water, alcohol, etc.).
･ Avoid use in an atmosphere containing corrosive
gases or the vapor of organic solvents.
･ Testing monitor batteries installed in the unit may
possibly be weak. Replace batteries before
extended measurement usage.
･ Use the original packing materials when reshipping
the product, if possible.
･ Use only LR03 Alkaline batteries. Using manganese
batteries may not result in accurate measurements
or proper communication with the Communication
Base.
･ Avoid directly exposing the optical communication
port in the data logger to light sources powered by
AC voltage such as fluorescent lighting - doing so
may cause the instrument to malfunction.
Depending on the luminosity of the lighting, as
much as possible stay away from the light source
or cover the optical communication port when using
the logger.
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Notes on Use
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1
Chapter 1
Overview
Logger series enable measurement and
recording at fixed intervals.
Data is saved in nonvolatile memory when
batteries are weak or removed for replacement.
Logger series products are designed for various
types of recording shown below. For details,
see each product specification.
3631-20 Temperature and Humidity
3632-20 Temperature (internal sensor)
3633-20 Temperature (external sensor)
3634-20 Instrumentation sensor (4-20 mA)
3635 Voltage output sensor compatible
In use with HIOKI measurement instrument
analog output
3635-24: 3423
3635-25: 3404, 344 4, 3445
compatible
3635-24 (±500 mVDC)
3635-25 (±5 VDC)
3635-26 (±50 VDC)
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Chapter 1 Overview
2
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Interval and Maximum Recording Time
(Power save function: On)
Single 3631-20 HUMIDITY LOGGER records
temperature and humidity each up to 8000
data.
INTVL REC time INTVL REC time
2s 4h26min40s 1min 5day13h20min
5s 11h6min40s 2min 11day2h40min
10 s 22h13min20s 5min 27day18h40min
15s 33h20min 10 min 55day13h20min
20 s 44h26min4s 15 min 83day8h
30 s 66h40min 20 min 111day2h40min
30 min 166day16h
60 min 333day8h
Using loggers other than 3631-20 HUMIDITY
LOGGER, single logger records up to 16000
data.
INTVL REC time INTVL REC time
2s 8h53min20s 1min 11day2h40min
5s 22h13min20s 2min 22day5h20min
10 s 44h26min40s 5min 55day13h20min
15 s 66h40min 10 min 111day2h40min
20 s 88h53min20s 15 min 166day16h
30 s 133h20min 20 min 222day5h20min
30 min 333day8h
60 min 666day16h
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Chapter 1 Overview
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3
Name and Functions of Parts
1
2
3
4
1. LCD Displays measurement value and
2. Optical data
transfer ports
3. Connecting
terminals
4. INTERVAL button Calls up interval setting display to set
5. SELECT button
(REC/STOP)
5
EX: 3631-20
settings.
Enables optical data transfer to
COMMUNICATION BASE.
Connects various sensors and data
transfer cables.
interval.
Pressing more than 1 second initiates
or stops recording.
Interval is selected in interval setting
display.
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Chapter 1 Overview
4
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Chapter 1 Overview
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5
Chapter 2
Set Up
2.1 Replacing the Battery
WARNING
To avoid electric shock when replacing the
･
batteries, disconnect the connection cable
before beginning. Also, after replacing the
batteries, always replace the cover and tighten
the screw before using the unit.
Do not mix old and new batteries, or different
･
types of batteries. Also, be careful to observe
battery polarity during installation. Otherwise,
poor performance or damage from battery
leakage could result.
Do not touch board when replacing batteries.
･
Touching board may result in damage.
Handle and dispose of batteries in accordance
･
with local regulations.
Use only LR03 Alkaline batteries. Using
･
manganese batteries may not result in accurate
measurements or proper communication with
the Communication Base.
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Chapter 2 Set Up
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