TE-3000
Thermo Electric
Temperature
Bath
Instruction
& Operation
Manual
CONTENTS
i
1
2
3
INTRODUCTION 1
A. Scope ............................................................................................................................. 1
B. Overview ........................................................................................................................ 1
ITEM DESCRIPTIONS 3
A. Lower Control Chassis .................................................................................................. 3
B. Upper Bath Vessel Housing ........................................................................................... 3
C. Cables & hoses, etc. ....................................................................................................... 4
UNPACKING AND INSTALLATION 5
A. Unpacking ...................................................................................................................... 5
B. Checking for damaged/missing items ............................................................................ 5
C. Physical arrangements ................................................................................................... 5
D. Liquid and pneumatic connections ................................................................................ 6
E. Platform/pump assembly ................................................................................................ 6
F. Electrical connections ..................................................................................................... 8
G. Selecting a bath liquid .................................................................................................... 9
4
GENERAL OPERATIONS 11
A. Filling the bath with liquid .......................................................................................... 11
B. Application of power ................................................................................................... 12
1. Cold start .......................................................................................................... 12
2. Warm start ......................................................................................................... 13
C. Self-test sequence ........................................................................................................ 13
D. Normal display and keypad indications....................................................................... 15
E. LED indicators ............................................................................................................. 17
F. Adjusting the liquid level in the bath ............................................................................ 17
G. Setting the target (desired) bath temperature ............................................................... 18
H. Calibration at a given target temperature .................................................................... 19
I. Menu selections ............................................................................................................. 20
1. Celsius or Fahrenheit operation ........................................................................ 20
2. Bath temperature calibrations and offsets ........................................................ 21
3. Communication options.................................................................................... 22
CANNON® TE-3000 Thermoelectric Constant Temperature Bath
Version 1.1c — May, 2005; CANNON® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
ii
5
6
7
COMMUNICATIONS 25
A. Downloading firmware updates................................................................................... 25
B. Full duplex (POINT-TO-POINT) operations ............................................................... 25
C. Half duplex and polled (multi-drop) operations .......................................................... 26
D. Commands, queries, responses and reports ................................................................. 26
MAINTENANCE 31
A. Preventative (scheduled) maintenance ........................................................................ 31
Cleaning of painted surfaces and front panel ....................................................... 31
Cleaning the fans and heat sinks .......................................................................... 31
Cleaning the bath window .................................................................................... 32
Draining the bath liquid ........................................................................................ 32
Cleaning the inside of the bath vessel .................................................................. 33
WARRANTY/RETURN INFORMATION 35
Products limited warranty................................................................................................. 35
Reagent and chemical warranty........................................................................................ 35
Returning a product to CANNON®.................................................................................. 36
A
B
APPENDIX A—REPLACEMENT PARTS LIST 37
Accessories ....................................................................................................................... 37
APPENDIX B—TROUBLESHOOTING GUIDE 39
CANNON® TE-3000 Thermoelectric Constant Temperature Bath
Version 1.1c — May, 2005; CANNON® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
CHAPTER
11
1
11
A. Scope
1
INTRODUCTION
Manual
Diagnostics/repair
B. Overview
TE-3000 features
The intent of this manual is to assist the user of the TE-3000 in the
general installation, operation, maintenance, and simple field repair of the
unit. This operations manual contains sections dealing with descriptions
of equipments, unpacking and installation, general front panel operations,
remote control/response operations, preventative maintenance, and
simple failure analysis and fault isolation.
Detailed diagnostics and repair should be performed in conjunction with
or solely by CANNON® Instrument Company. Please consult
CANNON® Instrument Company for further assistance beyond the
content of this manual.
The TE-3000 is a state of
the art, microprocessor
controlled and
thermoelectrically
cooled, constant temperature liquid bath. It is
totally self-contained in
two stackable bench-top
units which together
occupy a foot print less
than 15 by 20 inches. The
TE-3000 does not
contain any fluorocarbons or refrigeration
components and the only
moving parts are four
ball-bearing cooling fans
and a long-life vibratory
air pump. It can obtain
any temperature between
+30 degrees to -30
degrees Celsius and
remain stable at that
temperature within .01
degrees under normal
operating conditions.
Figure 1: The TE-3000
CANNON® TE-3000 Thermoelectric Constant Temperature Bath
Version 1.1c — May, 2005; CANNON® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
2
Temperature control
Calibration
Networking/communication
The principals of operation for this instrument are the latest in science
and technology. Custom-developed Peltier Cells are arranged on the back
and sides of the bath vessel. Newly designed high density air heat
sinks on the outer surfaces (hot side) of these Peltier Cells are cooled by
muffin fans running at half of their rated voltage. The bath liquid (2.5
liters) is constantly circulated by recycled bath vapors to ensure uniform
temperature distribution and stability. The temperature is controlled (both
heating and cooling) with a custom designed 16 bit digital pulse width
modulator running at a very high frequency.
The TE-3000 can be calibrated to any temperature reference standard for
any desired Celsius or Fahrenheit temperature. The controls for entering
the target (desired) temperature and the calibration at this temperature are
very simple and straight forward. The instrument remembers these
calibration corrections for every possible temperature as well as the latest
desired temperature so that upon power-up, the bath will
adjust to these last known and entered parameters.
The TE-3000 was designed for the future with built in capability for
remote control and networking with a new family of instruments. With
this remote interface capability, it is now possible to obtain quality
assurance data via a computer network. The TE-3000 was also designed
to ensure that its capabilities may be easily changed or updated with new
operating firmware via a remote download over this same network.
CANNON® TE-3000 Thermoelectric Constant Temperature Bath
Version 1.1c — May, 2005; CANNON® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
CHAPTER
2 2
2
2 2
A. Lower Control Chassis
The Control Chassis for the TE-3000 is the base unit of the instrument
upon which the Upper Bath Vessel Housing sits.
The Control Chassis contains all of the power conditioning and supplies,
air pump, and electronics needed for the operation of the TE-3000. The
mains power input, two power connectors to the Upper Bath Vessel,
communication (RS-232 and RS-485) connectors, address selection
switch, download demand switch, two air pump connections to the Upper
Bath Vessel, and the bath fluid pump switch reside on the rear panel of
the Lower Control Chassis.
3
ITEM DESCRIPTIONS
Figure 2: TE-3000 Front panel
1
2
3
4
5
The front panel contains:
1 DC power indicator lamp
2 two lighted power switches (bath & lighting)
3 liquid crystal display
4 15-keypad switch array
5 two LED indicators (heating and cooling)
B. Upper Bath Vessel Housing
CANNON® TE-3000 Thermoelectric Constant Temperature Bath
Version 1.1c — May, 2005; CANNON® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
The Bath Vessel Housing for the TE-3000 sits on top of the Lower
Control Chassis. It contains a rectangular aluminum bath vessel with a
four pane, specially designed glass window attached to the elongated
front surface.
4
The Bath Vessel Housing also contains the thermoelectric modules,
finned heat sinks, fans, and fluorescent lamps with ballasts. The rear
panel has two power connectors from the Lower Control Chassis, two air
pump connectors from the Control Chassis, and the bath fluid overflow
jar along with integral pump and tubing connections.
C. Cables & hoses, etc.
The TE-3000 system includes several cables, hoses, and accessories
which are necessary for operation of the system.
Power cables
Air hoses
Overflow jar
1.) Two large diameter power cables (AC and DC) with circular connectors on their ends are provided to take power from the lower Control
Chassis up to the upper Bath Vessel Housing. The sex and type of
these connectors constrain their use in only one way - the proper
configuration.
2.) Two small diameter silicon air hoses (tube assemblies) with twist and
lock pneumatic connectors on their ends are provided to supply and
return recirculated bath vapors from/to the upper Bath Vessel to/from
the lower Control Chassis. The sex and type of these connectors
constrain their use in only one way - the proper configuration.
3.) One glass jar with lid is provided to catch the bath overflow liquid
and is to be mounted on the rear overflow jar support along with
three pieces of small diameter silicon tubing and an in-line pump
with connector. For instructions on assembling the overflow jar
support and connecting the Reciprocating Pump, see page 7. The
plastic lid for the jar has a hole into which the 3" tubing is inserted.
The other end of the 3" tubing is connected to the bath overflow
outlet. The 6" tube connects the fitting at the bottom of the jar to the
bottom of the air pump, and the top of the air pump is connected to
the 11" tubing which then rises to the top of the Bath Vessel housing
and mates to the bath fluid return pipe.
RTD sensor
Miscellaneous accessories
CANNON® TE-3000 Thermoelectric Constant Temperature Bath
Version 1.1c — May, 2005; CANNON® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
4.) One Platinum RTD sensor assembly is provided, with the probe and
part of the cable contained under the top plate of the upper Bath
Vessel Housing. This cable has a metal, bayonet style, connector on
one end to be plugged into the back of the lower Control Chassis.
5.) Two hole covers, one 1/4-20 cap nut, and one mercury thermometer
holder are provided.
CHAPTER
33
3
33
A. Unpacking
5
UNPACKING AND
INSTALLATION
The TE-3000 should be inspected immediately upon arrival. If the
shipping containers have been damaged externally, the shipping company
should be advised of this condition immediately.
The contents should be carefully removed and placed on a stable bench
or table for further inspection. Retain all original shipping materials and
containers which will be needed if the return of the instrument is necessary for warranty repair/replacement.
B. Checking for damaged/missing items
After all items have been removed from the shipping container and
placed on a bench or table, the items should be compared to the packing
list.
Inspect each component for signs for damage. Report damages to the
shipper and to the CANNON® Instrument Company immediately.
Damaged items
Retain all packing materials until the instrument is connected and functioning properly. If any component(s) must be returned to
CANNON® Instrument Company, the damaged item(s) should be pack-
aged in the original shipping container. Refer to the final chapter of this
manual for instructions on returning defective equipment. Customers
outside the United States should contact the local CANNON® agent for
procedures on returning products to CANNON® .
If an item is missing, please notify CANNON® Instrument Company
immediately.
C. Physical arrangements
CANNON® TE-3000 Thermoelectric Constant Temperature Bath
Version 1.1c — May, 2005; CANNON® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
Sections A through C in the previous chapter dealing with item descriptions should be read prior to this section. The final placement for the TE3000 should be a level, strong, and stable bench or table surface.
Occasional access to the rear of the unit should be conveniently permitted. The bath requires adequate ventilation for the integral cooling fans so
a space of at least eight inches should be provided between the rear and
both sides of the TE-3000 and any wall or other obstruction. A clearance
6
Figure 3:
TE-3000 rear view with alignment bolt highlighted
area on the right side of the unit is necessary to allow access to the rear
pump switch. An electrical service MAINS power outlet must be located
within nine feet of the TE-3000.
The lower Control Chassis should be placed on the table first followed by
the upper Bath Vessel Housing which is placed on top of the Control
Chassis. The rear mounted alignment bolt on the top rear of the lower
Control Chassis must mate with the hole in the alignment bracket on the
bottom rear of the upper Bath Vessel Housing (see Figure 3). A 1/4-20
hex nut is provided to secure this mating arrangement and should only be
finger-tightened.
D. Liquid and pneumatic connections
The pneumatic connections on the TE-3000 provide the bath agitation
and subsequent stirring by recirculating the bath vapors. Two silicon tube
assemblies are provided which have plastic quick-connect bayonet style
connectors on their ends. These tubes are connected from the air in/out
connections on the bottom Control Chassis to the air out/in connections
on the upper Bath Vessel Housing. There are female connectors on both
ends of one hose and male (black o-ring visible) connectors on both ends
of the other hose. The hose with the female connectors mates with a male
connector on the lower chassis and a male connector on the upper housing.
The hose with the male connectors mates with a female connector on the
lower chassis and a female connector on the upper housing. They all secure
with an insertion and a 1/8 turn lock.
E. Platform/pump assembly
The platform and pump assembly may be completed with the following
items provided by CANNON®:
Overflow Platform & assembly screws (2)
Reciprocating Pump
Pre-cut tubing (approx. 11", 6" & 3" lengths)
CANNON® TE-3000 Thermoelectric Constant Temperature Bath
Version 1.1c — May, 2005; CANNON® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
If the rear platform is not yet attached to the bath unit, you should attach
it using the two 6-32 screws provided. The tabs which will hold the
overflow jar in place should be facing upward.
7
Procedure
1. After the platform is securely in place, attach the 11" tubing to the
bath intake at the top rear of the bath unit by pushing the tubing
firmly over the intake nozzle. Then attach the other end of the tube to
the top of the Reciprocating Pump (next to the electric connector
cable) in the same way.
2. Remove the plastic nipple adaptor from the opposite end of the
Reciprocating Pump and insert the pump end into the small hole on
the Overflow Platform so the pump rests on the platform.
3. Reattach the nipple adaptor removed in Step 2 (this holds the unit in
place).
4. Attach the electric connector cable from the Reciprocating Pump to
the receptacle marked PUMP on the Control Unit. To connect the
cable, make sure to align it correctly with the Bath Unit female
connector (tab upwards), then push until the cable connection
“clicks” into place.
5. Attach one end of the 6" tube to the bottom connection on the
Reciprocating Pump.
6. Attach the 3" tube to the bath
unit overflow outlet located
above the Overflow Platform.
Place the Overflow Jar on the
platform, inserting the other
end of the 3" tube through the
lid of the jar.
CANNON® TE-3000 Thermoelectric Constant Temperature Bath
Version 1.1c — May, 2005; CANNON® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
7. Attach the other end of the 6"
tube to the connector on the
underside of the Overflow Jar.
Make sure that all connections
are secure.
Figure 4:
Positioning the overflow jar
8
F. Electrical connections
Two large diameter electrical cables
deliver power from the lower Control
Chassis up to the upper Bath Vessel
Housing (see Figure 5). Both of these
cables have circular plastic power connectors on their ends. The cable with
three large rectangular pins carries DC
power to the Bath Vessel Housing from
the Control Chassis and the cable with
nine smaller circular pins carries AC
power to the Bath Vessel Housing. Both
of these cables have a male connector on
one end and its female counterpart on the
AC
Figure 5: AC/DC cable connections
other (see Figure 6). Determining which connector mates is fairly simple
but ensure a good connection by
turning the locking ring on every
plug until a small “click” is felt.
DC
Sensor connections
PUMP connections
POWER connection
The small black cable with a metal
LEMO connector carries the
temperature sensor signal from the
upper Bath Vessel Housing down
to the lower Control Chassis
(labeled PROBE). This connection is keyed and it operates as a
bayonet with a simple push in (no
twisting). The red dot on the plug
must be facing upward or insertion will not be permitted. When this connector is properly inserted, a
small “click” can be felt. Removal is accomplished with a simple pull on
the knurled section of the plug.
The small wire cable from the liquid pump with a gray plastic REDEL
connector mates with the connector on the lower Control Chassis labeled
PUMP. This connection is keyed and it operates as a bayonet with a
simple push in (no twisting). The keyway must be facing upward or
insertion will not be permitted. When this connector is properly inserted,
a small “click” can be felt. Removal is accomplished with a simple pull.
The MAINS power cord provided with the instrument will have an IEC
connector on one end and the appropriate wall outlet connector on the
other.
Figure 6:
Cable locking mechanism
CANNON® TE-3000 Thermoelectric Constant Temperature Bath
Version 1.1c — May, 2005; CANNON® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
G. Selecting a bath liquid
9
The “Ideal” Bath Liquid
Temperature Ranges
The “ideal” bath liquid would have a low viscosity, high heat capacity,
and low vapor pressure over a wide range of temperatures. This liquid
would also have a very high flash point and be relatively inexpensive. If
the liquid were to be used in kinematic viscosity measurements where
visual observation is important, it would be clear and colorless.
Unfortunately, there is no one “ideal” liquid to use when a wide temperature range is needed. No single liquid meets all of the above requirements.
The kind of liquid used in the TE-3000 Temperature Bath depends upon
the desired temperature range of the instrument. The table below lists
several different operating ranges and the liquids suitable for use in those
ranges:
SDIUQILHTAB0003-ET
EGNARERUTAREPMET SDIUQILHTABELBATIUS
C°01+otC°03-lohoclAlyhteM
C°02+otC°01-lohoclAlyporposI
lohoclAlyhtE
CAUTION
CAUTION
CAUTION
Bath Liquid Guidelines
C°03+otC°5+sliOytisocsiVwoL,retaW
Methyl alcohol (methanol) is very close to the “ideal” liquid; it can be
used at all temperatures in the TE-3000 operating range. However,
methanol may not be suitable for some laboratories because of its low
flash point and degree of toxicity.
Isopropyl alcohol is less toxic than methyl alcohol and somewhat less
volatile. However, it becomes very viscous at low temperatures, making
it difficult to maintain good temperature control.
Silicone fluids CANNOT be used in the TE-3000 Constant Temperature
Bath. NEVER place a silicone liquid in the TE-3000.
Do not attempt to use water as a bath fluid for operation at temperatures
of 2°C or lower.
When selecting a liquid for use in the TE-3000, keep the following
guidelines in mind:
CANNON® TE-3000 Thermoelectric Constant Temperature Bath
Version 1.1c — May, 2005; CANNON® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
10
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CANNON® TE-3000 Thermoelectric Constant Temperature Bath
Version 1.1c — May, 2005; CANNON® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
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