Hioki 3631-20 User manual

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
HEAD OFFICE
81 Koizumi, Ueda, Nagano 386-1192, Japan
TEL [phone] / FAX [phone]
E-mail: [e-mail]/
URL http://www.hioki.com/
HIOKI USA CORPORATION
6 Corporate Drive, Cranbury, NJ 08512, USA
TEL [phone] / FAX [phone]
3631A981-11 08-05H
Printed on recycled paper

HIOKI 3631-20, 3632-20, 3633-20,
3634-20, 3635-24, 25, 26
Logger Series
Instruction Manual
Publication date: May 2008 Revised edition 11
Edited and published by HIOKI E.E. CORPORATION
Technical Sales Support Section
All inquiries to International Sales and Marketing
Department
81 Koizumi, Ueda, Nagano, 386-1192, Japan
TEL: [phone] / FAX: [phone]
E-mail: [e-mail]
URL http://www.hioki.com/
Printed in Japan 3631A981-11
･All reasonable care has been taken in the production of
this manual, but if you find any points which are unclear
or in error, please contact your supplier or the
International Sales and Marketing Department at HIOKI
headquarters.
･In the interests of product development, the contents of
this manual are subject to revision without prior notice.
･The content of this manual is protected by copyright.
No reproduction, duplication or modification of the
content is permitted without the authorization of Hioki
E.E. Corporation.

Contens
Introduction i
Inspection i
Safety Notes ii
Notes on Use v
Chapter 1 Overview 1
Chapter 2 Set Up 5
2.1 Replacing the Battery 5
2.2 Power Save Function 7
2.3 Setting Current Time 9
2.4 Connecting Sensor and Cable 10
Chapter 3 Settings 15
3.1 Setting Items 15
3.2 Manual Setting 18
3.3 Setting by COMMUNICATION BASE 20
3.4 Connecting COMMUNICATION BASE
with Logger 21
Chapter 4 Specifications 23
Chapter 5 Maintenance and Service 35

i
__________________________________________________
Inspection
_____________________________________________
3631-20 9630 HUMIDITY SENSOR
3634-20 9632 CONNECTION CABLE
3635-24
3635-25
3635-26
9632 CONNECTION CABLE
Introduction
Inspection
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.
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 x2
(built into this unit, for monitor)
Designated accessory for each logger

ii
__________________________________________________
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.
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.

iii
__________________________________________________
Safety Notes
_____________________________________________
･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).
WARNING
Indicates that incorrect operation
presents a significant hazard that
could result in serious injury or
death to the user.
CAUTION Indicates that incorrect operation
presents a possibility of injury to the
user or damage to the product.
Safety symbols
The following symbols are used in this Instruction
Manual to indicate the relative importance of
cautions and warnings.

iv
__________________________________________________
Safety Notes
_____________________________________________
CAT I Secondary electrical circuits connected to an AC
electrical outlet through a transformer or similar
device.
CAT II Primary electrical circuits in equipment connected to
an AC electrical outlet by a power cord (portable
tools, household appliances, etc.)
CAT III Primary electrical circuits of heavy equipment (fixed
installations) connected directly to the distribution
panel, and feeders from the distribution panel to
outlets.
CAT IV The circuit from the service drop to the service
entrance, and to the power meter and primary
overcurrent protection device (distribution panel).
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.
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.

v
__________________________________________________
Notes on Use
_____________________________________________
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.
Notes on Use
Follow these precautions to ensure safe operation
and to obtain the full benefits of the various
functions.

vi
__________________________________________________
Notes on Use
_____________________________________________
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.

1
__________________________________________________
Chapter 1 Overview
_____________________________________________
3631-20 Temperature and Humidity
3632-20 Temperature (internal sensor)
3633-20 Temperature (external sensor)
3634-20 Instrumentation sensor (4-20 mA)
compatible
3635 Voltage output sensor compatible
3635-24 (±500 mVDC)
3635-25 (±5 VDC)
3635-26 (±50 VDC)
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.
In use with HIOKI measurement instrument
analog output
3635-24: 3423
3635-25: 3404, 3444, 3445

2
__________________________________________________
Chapter 1 Overview
_____________________________________________
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
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
Interval and Maximum Recording Time
(Power save function: On)
Single 3631-20 HUMIDITY LOGGER records
temperature and humidity each up to 8000
data.
Using loggers other than 3631-20 HUMIDITY
LOGGER, single logger records up to 16000
data.

3
__________________________________________________
Chapter 1 Overview
_____________________________________________
1
2
3
5
4
EX: 3631-20
1. LCD Displays measurement value and
settings.
2. Optical data
transfer ports
Enables optical data transfer to
COMMUNICATION BASE.
3. Connecting
terminals
Connects various sensors and data
transfer cables.
4. INTERVAL button Calls up interval setting display to set
interval.
5. SELECT button
(REC/STOP)
Pressing more than 1 second initiates
or stops recording.
Interval is selected in interval setting
display.
Name and Functions of Parts

4
__________________________________________________
Chapter 1 Overview
_____________________________________________

5
__________________________________________________
Chapter 2 Set Up
_____________________________________________
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.
Chapter 2
Set Up
2.1 Replacing the Battery

6
__________________________________________________
Chapter 2 Set Up
_____________________________________________
CAUTION
When exchanging the batteries, the circuit may
sometimes short circuit due to static electricity. As far as
possible, do not touch the base board with bare hands.
Installing new batteries assures operation for
about two years (about one year with 3631-
20). (at 20 ℃temperature, power save
function: on, interval set at 1 minute)
Remaining battery power indicator ( )
indicates remaining battery life reducing
incrementally from right. Empty battery power
indicator ( ) indicates time to replace
batteries.
(1) Remove back cover screw to remove cover.
Verify polarity and install two new LR03
alkaline batteries.
(2) Fit cover properly and tighten screw.

7
__________________________________________________
Chapter 2 Set Up
_____________________________________________
2.2 Power Save Function
Display window is automatically turned off in
approximately 15 seconds after last key entry.
(Sleep)
However, while recording, REC//
mark shows each conditions.
Press any button to turn display on to display
measurement value or to set settings.
Note when interval setting display is on, sleep
does not engage even after 15 seconds has
passed with no button press.
Initially, power save function is on. To turn off
power save function, follow the instructions
below.
Turning off power save shortens battery life.

8
__________________________________________________
Chapter 2 Set Up
_____________________________________________
Setting procedure
(1) Connect logger, COMMUNICATION BASE and
personal computer.
(2) Start up application software packaged with
COMMUNICATION BASE.
(3) Go to Communications on the menu bar and
select Power Save Options. Choose Off to turn
off power save function.
Changing power save settings initializes all
logger measurement conditions (excluding
measurement data).
To connect COMMUNICATION BASE with
logger and personal computer and to install
application software, see COMMUNICATION
BASE Instruction Manual.
To use application software, see Help.

9
__________________________________________________
Chapter 2 Set Up
_____________________________________________
2.3 Setting Current Time
After replacing batteries in logger series
current time must be set when connecting with
COMMUNICATION BASE for the first time.
See how to set current time in
COMMUNICATION BASE instruction
manual.

10
__________________________________________________
Chapter 2 Set Up
_____________________________________________
WARNING
To avoid damage to the unit, do not input a
voltage and current exceeding the rated maximum
to the input terminals.
3634-20: ±40 mA, 3635-24: ±600 mV
3635-25: ±6 V, 3635-26: ±60 V
Using the 3634/3635
In order to prevent electric shock and short-
circuit accidents, shut off the power to the line to
be measured before connecting the connection
cable.
Use only the specified connection cables (9632,
9633, 9634) to connect the product input
terminals to the circuit to be tested.
2.4 Connecting Sensor and Cable