Omega Products BATH-12 User Manual
Constant-Temperature
Circulating Baths
HCTB-3000/RCTB-3000 Series
U Temperature Stability
to ±0.005°C
U Temperature Range:
-40 to 200°C
(-40 to 392°F) Available
U 5 Bath Sizes from
8 to 48 Liters, or Use
with Existing Baths
or Containers
U High Pump Capacity with
External Connections
U Adjustable Over-
Temperature Cutoff
U 120V Power, 240V Optional
U Includes Mounting Bridge
for Liter Baths
A bridge to mount
all circulating baths
is included with
all baths
K
Applications
U Use as Calibration Standard
U Laboratory and Biological
U Stress and Shock Testing
A choice of 3 temperature
controllers with either analog or
digital temperature selectors offers
temperature management over
the range of -40 to 250°C (-40
to 392°F) with stability as good
as ±0.005°C. Each model has a
rugged, splash-proof case with
all submerged parts made of
either stainless steel or hightemperature, self-extinguishing
plastic. Powerful pressure
circulating pumps with external
circulation connections are
standard on all models. With a
choice of 3 different temperature
controllers and 5 stainless steel
baths with a capacity of 8 to 48
liters, a wide range of different
systems is available to suit
most laboratory and industrial
applications. Inlet and outlet pipes
at the rear of the controller can
be used for external circulation to
another apparatus or they can be
sealed for circulation within the bath
itself. The baths are also suitable
for below ambient applications,
and can be used at sub-ambient
temperatures with an optional
cooling coil or with RCTB-3000
Series dip and flow coolers.
Unheated Baths
Designed to be used with an
HCTB-3000 Series thermoregulator,
these baths incorporate attractive
carrying handles for added safety.
The 4 smaller models have seamfree stainless steel interiors for
easy cleaning. The largest bath,
BATH-48, is of welded construction.
All baths have stoved enamel steel
outer cases.
HCTB-3030 shown smaller than
actual size with BATH-12.
Dip and Flow Coolers
The RCTB-3000 Series dip and
flow coolers are designed for use
at below-ambient temperatures
down to -35°C (-31°F). The flow
cooler works in conjunction with
a thermoregulator and continually
extracts heat from the bath fluid
by means of the heat exchanger,
which is built into the unit.
The cooling head of the dip cooler
fits neatly and unobtrusively into
the corner of the bath and can be
secured with a specially designed
mounting bracket (included). Even if
cooling can be achieved by cold tap
water, a dip cooler is recommended,
since it conserves water and is
easier and more convenient to use.
K-44
HCTB-3010.
HCTB-3020.
All models shown smaller
than actual size.
HCTB-3030.
Thermoregulator Specifications
To Order Visit omega.com/hctb-3000_rctb-3000 for Pricing and Details
Model No.
Temperature Range °C (°F)* -20 to 95 (-4 to 203) -40 to 120 (-40 to 248) -40 to 200 (-40 to 392)
Temperature Selection Analog Digital Digital
Temperature Stability Using
Water @ 40°C (°C)
Pump Capacity (LPM) 10 10 10
Pump Capacity (mbar) 145 145 145
Method of Control Proportional PID PID
Temperature Sensor Thermistor PRT PRT
Adjustable Over-Temp Cutout Yes Yes Yes
Low Liquid-Level Cutout No Yes Yes
PC Interface No No Yes, RS232
Cooling Coil** No No No
Dimensions: mm (inch)
Extension Below Base
Size H x W x L, mm (inch) 260 x 124 x 237 260 x 124 x 237 260 x 124 x 237
(10.2 x 4.9 x 9.3) (10.2 x 4.9 x 9.3) (10.2 x 4.9 x 9.3)
Refrigeration required for below ambient cooling.
*
Available as an option as HCTB-COIL.
**
††
For 240 Vac power, add suffix “-240V” to model number, no additional cost.
Note: For 4-point NIST calibration, points: -20°C, 60°C, 120°C, 180°C, add suffix “-NIST” to model number, for an additional cost.
††
HCTB-3010 HCTB-3020 HCTB-3030
±0.01 ±0.01 ±0.005
145 (5.7) 145 (5.7) 145 (5.7)
Dip and Flow Cooler Specifications
Model No.
††
RCTB-3050 RCTB-3060 RCTB-3070 RCTB-3080
†
Cooler Type Dip Dip Flow Flow
Minimum Achievable -20 -35 -20 -35
Temperature °C (°F) (-4) (-31) (-4) (-31)
Cooling Capacity 0°C (W) 145 240 140 210
Cooling Capacity 20°C (W) 145 240 140 210
Cooling Capacity -10°C (W) 110 230 110 200
Internal Capacity (mL) — — 200 200
Dimensions 300 x 420 x 235 325 x 430 x 370 300 x 420 x 235 325 x 430 x 370
H x W x L mm (inch) (11.8 x 16.5 x 9.3) (12.8 x 16.9 x 14.6) (11.8 x 16.5 x 9.3) (12.8 x 16.9 x 14.6)
Coil Dimensions 85 x 75 85 x 75 — —
L x Dia. mm (inch) (3.3 x 3.0) (3.3 x 3.0)
Hose Length to Coil mm (inch) 1250 (49.2) 1250 (49.2) — —
5
Hose Connection mm (inch) — — 16 (
† At ambient of 20°C, using a mixture of 40% water, 40% antifreeze, 20% alcohol to achieve -35°C, in a well-insulated 8 liter bath.
†† For 240 Vac power, add suffix “-240V” to model number, no additional charge.
⁄8) 16 (5⁄8)
K-45
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