EYELA NTT-2100 User manual

NTT-2100
NTT-2200
V00
Instruction Manual
Thermo Regulating Bath
This manual is designed to use this unit safely with its best performance.
Please read this manual carefully, especially on
'Safety precautions'.
Please keep this manual in a place easily accessible to every user.
Tokyo Rikakikai Co., Ltd.
Important

Safety precautions
1. Signal word
Alert mark Definition
Warning Mishandling the product may cause users serious
personal injury or loss of life.
Caution Mishandling the product may injure users or cause
property damage.
Though we are trying to look into conceivable risk of using the product, it is very difficult for us to
expect all of it. It means that all the instructions in this
manual do not cover all the types of risks that may be caused by the product.
However, if you follow the instructions, you surely can handle and operate the product safely.
Please sue extreme care when handling this product and try to prevent all the potential accidents
and mechanical failures.
Due to this product's characteristics and
functions, some parts of the unit are subject
to high temperature and touching these
parts during operation may burn or injure
yourself. However, if you have proper
information before use, you can avoid
almost all these troubles.
Therefore, this manual categorizes the level
of importance and danger as below with
alert mark and signal word. Please follow
the instructions and use the product safely.
Signal word

2. Warning label
For highly priority danger, warning labels are attached on the specified position of
product body as shown below.
Please read it carefully and pay your full attention when operating the product.
* if you have any trouble reading the label because of worn-out and etc.,
please replace with new one. Please contact us if you require new label.

Thank you for choosing the products of .
Introduction
Table of contents
1. For safety operation ...............................
2. Outline
2-1 Application .....................................
2-2 Specifications .................................
2-3 Heating curve (Referable data) ......
2-4 Descriptions ...................................
2-5 Optional accessories .......................
3. Descriptions and functions of the control panel
3-1 Control panel .................................
3-2 Stationary operation and
Timer mode control ........................
3-3 Adjustment mode ...........................
3-4 Safety features and
alarm functions ............
4. Installation
4-1 Place to install ...............................
4-2 Requirements for
installation .....................................
4-3 Connecting to utility ....................
This instruction manual describes the procedures
of installation, operation, troubleshooting,
maintenance / checkup, and disposal for Thermo
regulating bath model NTT-2100 and NTT-2200.
Read this manual carefully before you start the
operation.
5. Operation
5-1 Preparation ..................................
5-2 Attaching optional accessories...
5-3 Operation ....................................
5-4 Operation for Adjustment mode...
6. Trouble shooting ................................
7. Maintenance and checkup
7-1 Test of switch .............................
7-2 Cleaning and care ......................
8. Disposal of unit .................................
9. After-sales Services .......................
1
2
2
3
4
5
6
7
8
9
11
11
12
13
16
17
23
28
30
30
32
32
Packing list
Check the following items are bundled with each quantity
before your installation.
Main unit
Ground adapter
Bath (SB-9)
Protection cover
Instruction manual
1
2
3
4
5
NTT-2100 NTT-2200
1 1
11
1 1
1 1
1
1

1
Do not turn on the switch while holding the heater.
1For your safety operation
This unit subjects to high temperature.
Use extreme care when handling it.
Caution
If turning on the main power without setting the unit into the water
bath, the surface of heater may have high temperature and it may
incur burns on users. For its usage, please make sure to mount
the protection cover and then place the property of heater
completely into the water bath before turning on the switch.
●Highly heated portion

2
NTT-2100
NTT-
± 0.05 ~
6A, 0.6kVA
3.5kg
138W x 150D x 312H (Excluding any projection)
5 ~ 35°C
AC-100V 50/60Hz
11A, 1.1kVA
500W (SUS316L) 1kW (SUS316L)
7L / min
(50 / 60 Hz / water / high circulation)
1.2m / 1.5m
(50 / 60 Hz / water / high circulation)
± 0.1 ~
2
2-1 Use application
Outline
Warning
Do not remodel.
Do not use out of applications.
Remodeling or use out of applications may
cause an electric shock or mechanical troubles.
2-2 Specifications
This unit is applicable for wide variety of
experiments / examinations of reaction,
crystallization, synthesis, deposition of organic
steel, environmental tests of materials,
breakdown tests, endurance test, and such.
Room Temperature (RT) +5℃〜80℃(If you use a supplied bath, Max.
70°C) * 1 (If you use this with a cooling bath, -20〜RT+5℃)
Alarm function (Low water level, Over shoot, Control, Sensor),
Variable independent over temperature protector, Circuit protector
Changeable jet flow
Thermistor
Auto-tuning, Temperature calibration, Auto-stop 1, Auto-stop 2,
Auto-start, Selectable operation after power failure
Digital setting by membrane switch, digital read-out by 0.1°C
PID microprocessor control, SSR output
Model
Name of product
Heater output
Safety features
Temperature control
Temp. settings / indication
Additional functions
Temp. control accuracy
Temp. control range
Temperature sensor
Stirring method
Max. flow rate of
Max. head of circulation pump
circulation pump
Applicable ambient temp. range
Overall dimensions
Net weight
Power source input
Rated power source
(Possible external circulation)
Protection cover
Water bath
Anti-bacterial stainless steel-made
Self-extinguishing resin (Max. 70°C) 9L capacity
* 1 Use an anti-freeze solution when the temperature is 10°C or lower.
If you use at Room temperature + 5°C or lower, combine with other cooling unit such as an immersion
cooler or a cooling water circulator, etc.
* 2 The performance is shown at room temperature 20°C , 100V, 50Hz, using a supplied water bath filled
with 7L water without lid.
*2
Immersion type Thermo regulating bath
Propeller by stirring speed control

0
10
20
30
40
50
60
70
80
0 10 20 30 40 50 60
①
⑳
0
10
20
30
40
50
60
70
80
0 10 20 30 40 50 60 70 80 90
①
⑳
1) NTT-2100
Temperature
（℃）
2-3 Heating curve (Referable data)
Applied conditions : Ambient temperature : 20°C
AC100V 50Hz
Using a supplied water bath with lid
Slow stirring
Coolant medium : water (7L)
With no load
Center of bath
Room Temp.
2) NTT-2100
Temperature
（℃）
Applied conditions Ambient temperature : 20°C
AC100V 50Hz
Using a supplied water bath with lid
Slow stirring
Coolant medium : water (7L)
With no load
Time (min)
Time (min)
Center of bath
Room Temp.
Note :
The maximum temperature and a required time to heat depends on the applicable
ambient temperature, power source voltage, presence or absence of load.

2-4 Descriptions
Control panel
Protection cover
Heater
Propeller(NTT-2100)
Casing(NTT-2200)
Float switch
Setting dial for overheat stopper
and reset switch
Main power
Stirring control knob
Circuit protector
Over heat protection sensor
Fixing screw for protection cover
Temperature sensor
Protection cover
Clamp

2-5 Optional accessories
■
CC - 1 114250
ON - 1 114260
SBK - 1 196190
B - CRAMP 196180
TB - 1 114210
SB - 6 164510 5.5 260W×150D×150H 305W×195D×198H
SB - 11 114650 10 281W×222D×150H 330W×270D×190H
SB - 15 164520 16 298W×274D×150H 390W×370D×200H
SB - 24 114630 24 507W×302D×160H 573W×362D×195H
■
■
■
■
■
Model Cat. No.
Model Cat. No.
Model Cat. No.
Model Cat. No.
Model Cat. No.
Model Cat. No. Capacity Valid inner dimensions in mm Overall dimensions in mm
Water bath
The following optional water baths are applicable for each required water quantity except a supplied
standard bath. The interior of each bath is stainless steel SUS 304- made.
Bath rack
Enables the bath depth change when a small container is placed in the
bath.
Bath clamp
Necessary when fixing this unit into an optional water bath.
Bath lid
Reduces the evaporation of bath water and the influence of the room air
when the unit is used at high temperature or for a long time.
External circulation nozzle (NTT-2200)
Applicable to circulate the heated bath water to the
external jacket or coil.
Cooling coil
Applicable to circulate cooling water for controlling the
bath water at the room temperature or lower.
Refer to [5-2 Attaching optional accessories] for how to attach / to use.

Lights up when preset temp. / timer display mode is on.
.Functioning for start and stop of the control operation.
Available only with displaying the preset values. Every single press of the key
deducts 0.1℃(1 min.) in case of any preset numerical values. Then, holding
down the key makes sequential deduction possible. Also, every 1.0℃(10
min.). deduction is made possible by holding down the key for longer than 3
sec. In case of presetting with characters, the characters are switchable
Available only with displaying the preset values. Every single press of the key adds
0.1℃(1 min.) in case of any preset numerical values. Then, holding down the key
makes sequential addition possible. Also, every 1.0℃(10 min.). addition is made
possible by holding down the key for longer than 3 sec. In case of presetting with
characters, the characters are switchable.
Functions to switch to measured / preset values. When alarming, with
this key the displayed alarming mode / numerical characters can be cancelled.
Shows the temperature, time, set character, and alarm mode.
Lights up while displaying time. Flashing while counting time.
Lights up on when temp. display mode is on.
Flashing while controlling (or, while not counting time).
Lights up when Auto start is selected.
Flashes once switched to timer display during Auto start in control.
Lights up when Auto stop 2 (for timer priority) is selected.
Flashes once switched to timer display during Auto stop 2 in control.
Lights up when Auto stop 1 (for temp. priority) is selected.
Flashes once switched to timer display during Auto stop 1 in control.
Flashes while tuning automatically.
Lights up when heater is turned on.
Flashes when alarming.
Switches the timer mode by every pressing.
┌───────────────────────────────┐
└→ Stationary operation→Auto stop１→Auto stop２→Auto start ──┘
Run/Stop key
▼key
▲key
Set key
Mode key
Display
Time LED
Temperature LED
Set (Preset) LED
Auto start LED
Auto stop ２LED
Auto stop １LED
Heater LED
Auto tuning LED
Alarm LED
FunctionNameNo.
1
2
3
h.m
SV
PV
Alarm
Heating
Auto Tuning
Auto stop1
Auto stop2
Auto start
℃
Run
Stop
Mode Set ▼
▲
1
2
3
5
6
7
12 13 15
11
10
9
8
4
14
5
6
4
7
10
9
8
12
13
15
11
14
3Descriptions and functions of the control panel
3-1 Control panel

3-2 Stationary operation and Timer mode control
t
t
t
Auto Stop １LED
↓
Auto Stop ２LED
↓
Auto Start LED
↓
Temperature display (Whole timer mode, LED turned off.)
In accordance with purposes of usage, it is operational
to preset the timer mode in the unit. The preset
conditions are entered with the control panel. Even in
the mid of running the unit, it is still available to change
the preset temperature, time, timer mode, or to quit the
preset timer operation.
1. Stationary operation
Once any temperature is set and the unit
starts to run, that preset temp. is sustained
while running the unit.
With [Run / Stop] key, the unit starts / stops.
* Preset temperature range
Room temp. + 5°C ~ 80°C
(with the supplied water bath : ~ 70°C,
with the a cooling device : -20°C ~ )
Temp.
Time
To preset desirable modes, please read '5-
3-3. How to preset / start / stop stationary
operation', and '5-3-4. How to set / start /
stop timer mode'.
* Every single press of [Mode] key changes
the timer mode in the following order.
Stationary operation
Timer mode
Through presetting the timer, the stationary operation
starts / stops.
There are 3 timer modes such as Auto stop 1, Auto stop
2, and Auto start.
In addition, this timer setting method is common to
others.
* Available timer range : 0 h 00 min. ~ 99 h 59 min.
Temp.
Time
Temp.
Time
Temp.
Time
3. Auto start mode
Once a timer is preset and the unit starts to run,
after the passage of preset time (t), the stationary
operation starts automatically.
1. Auto stop 1 mode
After setting a timer and starting the operation,
once the temperature reaches the preset
temperature, the stationary operation starts to run
just for the preset length of time.
After the passage of preset time (t), the control
operation stops automatically.
2. Auto stop 2 mode
After setting a timer and starting the operation,
once the temperature reaches the preset
temperature, the stationary operation starts to run
just for the preset length of time.
After the passage of preset time (t), the control
operation stops automatically.

There are 5 functions such as Temperature
display compensation, Upper temperature limit
alarm, Lower temperature limit alarm, Auto
tuning, Power failure recovery mode.
3-3 Adjustment mode
2. Upper temperature limit alarm
Able to change the preset value of upper limit temperature
alarm.
*Preset range for upper limit temperature :
0 ~ 30°C
Default : 5 °C
1. Displayed temperature compensation
Able to comply this machine-measured temp. with an
appropriate one measured by a standard
thermometer.
* Temperature display compensation range:
-20 ~ + 20°C
Default : 0°C
5. Power failure recovery
Able to select any operation mode after recovery from power
failure.
* Selectable preset conditions as follows.
cont : The same control mode returns after recovery.
oFF : The control mode stops after recovery.
on : Although the same control mode returns, the
timer restarts if the preset temp. falls 5℃or more.
Default : cont
3. Lower temperature limit alarm
Able to change the preset value of lower limit temperature
alarm.
*Preset range for lower limit temperature :
0 ~ 30°C
Default : 5 °C
4. Auto tuning
P.I.D constant is performed for temperature control upon
this unit. Although the optimum P.I.D constant is already
preset at outgoing of the products from the factory, due to
some conditions and unexpected load during storage in the
warehouse, the preset conditions are altered somehow.
Even such situations, the P.I.D constant is still available for
automatic tuning in accordance with each requirement.
It is also able to return to the P.I.D constant, which was once
preset at the outgoing from the factory.
Auto-tuning setting range:
oFF : Atop the auto-tuning
on : Start the auto-tuning
cLr : Change the PID constants to the pre-
shipment value
Initial setting : off
No matter whenever the operation in progress is, the
adjustment mode is always resettable except any timing
while displaying time.
If in such a situation, click 'No key operation for 1 min.', or
press [Mode] key to switch to show a measured temp.
value. Then, set a desirable adjustment mode.
1) Press [set] key for 5 sec.
" SnS" comes up to the display, and the adjustment
mode is on.
2) Every single press of [▲] or [▼] key changed
the setting mode.
The adjustment modes change in the following order.
[▲]
[▲]
[▲]
[▲]
[▲]
[▼]
[▼]
[▼]
[▼]
[▼]
↓ ↑
↓ ↑
↓ ↑
↓ ↑
Displayed temperature compensa
tion
Upper temp. limit alarm
Lower temp.limit alarm
Auto tuning
Refer to [5-4. Operation in adjustment mode]
to know more details on how to set each mode.
Power failure recovery

Level alarm
•Control in suspension.
• Beeps after 5 min.
• Presence of alarm output.
• Alarm display.
•Beeps for 15 sec.
• Control in progress.
• Presence of alarm output.
• Alarm display.
•Beeps for 15 sec.
• Control in progress.
• Presence of alarm output.
• Alarm display.
Lower
temperature limit
alarm
Upper
temperature limit
alarm
CausesAlarm display & task
Name of alarm
PV
Alarm
Heating
Auto Tuning
SV
℃
h.m
PV
Alarm
Heating
Auto Tuning
SV
℃
h.m
PV
Alarm
Heating
Auto Tuning
SV
℃
h.m
PV
Alarm
Heating
Auto Tuning
SV
℃
h.m
PV
Alarm
Heating
Auto Tuning
SV
℃
h.m
3-4 Safety features and alarm functions
This unit provides the following safety features and alarm functions.
In the event of any trouble occurrence, please refer to [6. Trouble shooting] for due appropriate solutions.
Safety device Task Cause of trouble
Safety features
stand-alone
overheat stopper
When the in-bath temp. raises and exceeds
the temp. preset in the overheat stopper,
the power automatically shuts down.
*No alarm output.
• Low preset temperature in the overheat
stopper.
• Exceedingly overheat in the bath beyond the
temp. preset in the overheat stopper due to
malfunction on the temp. controller or SSR.
Circuit breaker The button pops up to shut down the
power.
* No alarm output.
Short circuit, or surge current.
Alarm functions
⇧Switching display mode
⇧Switching display mode
Operational condition
The in-bath temperature exceeds [the preset temp. +
the upper limit temp. preset value] temporarily, this
function senses it.
Cancellation of alarm
• This function is canceled automatically when
any measured temp. is lower than [the preset
temp. + the upper limit temp. alarm preset
value].
• The alarm is also canceled with [SET] key.
* The upper limit value can be changed.
(Refer to 5-4-2. Upper limit temperature alarm.)
Operational condition
When the in-bath temp. falls below [the preset
temp. + the lower limit alarm preset value]
temporarily, this functions senses it.
Release of alarm
• The alarm is released automatically when
the measured temperature is less than [the
set temperature + the lower limit value].
• The alarm is also canceled by [SET] key.
* The lower limit value is resettable.
(Refer to 5-4-3. Lower limit temperature alarm.)
The operation starts as the water level lowers.
Or, the water level lowers while operating.
Cancellation of alarm
Turn off the mains switch and refill the liquid.
Then, turn on the mains switch again.
(When the liquid level recovers, the alarm
function automatically recovers.)

Operational conditions
Temp. controller somehow turns irregular
mode due to noise or so.
Ambient temp. goes beyond 35℃.
Cancellation of alarm
Change applicable environment /
circumstance and power source.
Operational conditions
In the case of power failure while controlling,
or of power cut-off without stopping the
control function, this function senses it.
Cancellation of alarm
With [Set] key, the alarm can be cancelled.
* Operation mode after recovery from power
failure is resettable.
Please refer to '5-4-5. How to preset power
failure recovery mode'.
Operational conditions
• Even though the displayed temp. goes
beyond the preset temp., if that temp. keeps
raising for longer than 10 min., and SSR for
the heater goes to short circuit mode, this
function senses it.
• Even though the displayed temp. lowers
than the preset temp., if the temp. does not
raise (or, because of the heater's breaking) for
longer than 10 min., this function senses it.
• Even under cooling mode, if cool down mode
does not function for longer than 10 min., this
function senses it.
Cancellation of alarm
• With [Set] key, the alarm can be cancelled.
• The control mode restarts once the alarm is
cancelled.
Operational condition
Disconnected in-bath temp. sensor.
Cancellation of alarm
Turn off the power and replace the sensor.
• Micro-computer goes to be reset to
restart its control mode. If the micro-
computer does not return to normal, the
control mode stops.
• No alarm output. / Uncertain display
mode on a PC
• Control mode stops.
• Buzzering for 15 sec.
• Alarm output / display.
Cause of alarmingAlarm display & taskName of alarm
Watchdog
Sensor alarm
• Control mode stops.
• Buzzering for 15 sec.
• Presence of alarm output.
• Alarm display.
Uncontrollable
temperature
alarm
• According to its preset recovery
conditions, control mode, keeps
working.
• Alarm display after recovery.
• Display of in-progress control
• Display mode when control stops.
Power failure alarm
PV
Alarm
Heating
Auto Tuning
SV
℃
h.m
PV
Alarm
Heating
Auto Tuning
SV
℃
h.m
PV
Alarm
Heating
Auto Tuning
SV
℃
h.m
PV
Alarm
Heating
Auto Tuning
SV
℃
h.m
PV
Alarm
Heating
Auto Tuning
SV
℃
h.m
PV
Alarm
Heating
Auto Tuning
SV
℃
h.m
PV
Alarm
Heating
Auto Tuning
SV
℃
h.m
⇧⇩Switching display mode
⇧⇩Switching display mode

Installation
4-1 Place to install
4
Warning
Do not install at a potentially
dangerous circumstance.
This is a heater-mounted unit.
If installed in a place surrounded by risky
factors, it may cause fire.
Caution
Be aware of circumstances to
be installed.
If applicable circumstances seem poorly
contioned, it may cause to accelerate deterioration
of the machine, or to interrupt demonstration of the
machine's full performance.
For installation of the applicable machine, please choose a
place having the following conditions.
●No inflammable / burnable solids, liquids,
and gas around the intended location.
●No direct sunlight.
●Ambient temp. between 5 and 35℃.
●Full ventilation.
●No condensation.
●None or less humidity, no water drops.
●None or less dust.
●Stably horizontal and firm place.
(Please check the machine's weight when in
operation.)
4-2 Requirements for installation
Caution
Do not move the unit while operating.
In case some liquid spatters from the bath, you
may get burned. Therefore, please do not move
the machine during or for a while after the
operation.
* When intending to move the machine, please make
sure to unplug the power with no water in the bath.

4-3 Connecting to utility
Warning
Warning
Warning
Please make sure to check the voltage, phase,
and capacity for proper connection.
Wrong connection may cause fire or
electrical shock.
Connect earth properly.
For prevention against electrical shock,
do not earth the cable to a gas pipe or to
a water pipe.
Do not use a branching socket or power
strip.
Excess current and etc. may burn cable or
cause fire.
(1) Check the voltage, phase, current capacity of
this unit.
For connectivity, it is shown in the right table.
(2) Check what type of AC plug outlet is suitable.
(Do not plug in yet.)
With an earth-equipped connector, a normal mains
connector is directly applicable.
If no earth-equipped, please equip an earth to a
mains connector.
Please connect the mains connector's earth lead to
an earth.
If no earth, please contact any electrician near you to
ask for organizing an earth.
For connecting to a power outlet, do not use
a branching socket or power strip.
NTT-2100
NTT-2200 AC-100V 15A
Model Power source
Voltage Capacity
With an earth-equipped plug (100V)
With a plug with no earth (100V)
3-prong outlet
2-prong AC outlet
earth adapter
earth adapter
3-prong connector
3-prong connector
Not applicable

5Operation
5-1 Preparation
Caution
Do not use any other optional resin bath
except the supplied standard water bath.
Applied heat may cause to deform other
types of resin bath, or it may be ignition.
Clamp pin
Protection cover
1. Attaching protection cover
Make sure to attach the protection cover before mounting
the unit to the supplied resin-made water bath.
The protection cover can protect the resin bath from heat /
radiant heat when any hot portion touches the bath.
Insert the protection cover's fixing spring to the clamp pin,
and fix the protection cover with a fixing screw.
Fixing screw for
protection cover
Float switch
Casing
2. Adjusting the outlet direction (NTT-2200)
Turn the casing to adjust the outlet direction of jet
stream.
If the direction of jet flow is blocked off by
something, change the outlet direction to make the
stirring performance better.
Also, make sure that the float switch goes up and
down smoothly.

A direction
to lock
A direction to
unlock
(Free)
LOCK FREE
3. Fixing the main unit
(1) Turn the clamp lever to the FREE
position.
Clamp lever
Protection cover
(2) Mount the unit with the protection cover and the
clamp as if sandwiching the water bath
surroundings.
Supplied water bath
(Standard accessory)
(3) Turn the clamp lever to the LOCK position
to fix the unit to the bath.
Lock

6 cm
Applicable range to fix
the main unit
Supplied water
bath
(Longitudinal
side)
Water bath
Base plate of main unit
Water surface
* This clamp is dedicated for the supplied standard bath.
Please make sure to attach it to the specified position as
shown in the right drawing.
If intending to fix any other optional water bath, or if
intending to attach the main unit to another position within
the specified range, use an optional clamp.
4. Applying water
Fill water in the bath until the water level /
surface reaches 6cm lower from the base
plate of main unit.
5. Connecting to a mains plug
Make sure that the main power switch is turned off.
Then, plug in to an AC outlet.
Bath clamp for NTT [B-CLAMP]
Cat. No. 196180

5-2 Attaching optional accessories
CC - 1 114250
ON - 1 114260
■
B - CRAMP 196180
■
■
Model Cat. No.
Model Cat. No.
Model Cat. No.
Cooling coil
When controlling temperature at room temperature or
lower, attach an optional cooling coil to the main unit to
circulate the cooling water.
External circulation nozzle
In case of externally circulating the in-bath water to
the jacket or to the coil, attach an optional external
circulation nozzle to the main unit.
Detach the protection cover, and fix the coil with the
supplied screws as shown in the right figure. After fixing
the coil, attach the protection cover again.
Remove the protection cover, and fix the nozzle with the
supplied screws as shown in the right figure.
Connect a silicon tubing to the nozzle part of casing cover.
After fixing the nozzle, mount the protection cover again.
Bath clamp
In case of using any other optional bath, use the bath clamp.
Remove the protection cover, and loosen the fixing screw for clamp
lever to replace the standard clamp with this optional bath clamp.
After fixing the bath clamp, attach the protection cover again.