Transcat ThermCal400 User manual
The ThermCal400
Introduction
The ThermCal400 calibrator provides a safe, dry, constant temperature source for checking and calibrating a wide
range of temperature sensors, systems, indicators and thermometers It is fast and economical and can be used
either on a bench top or as a portable field unit. The weight of the unit is only pounds/five kilograms. The
unit covers the temperature range from 5°C above ambient up to 400°C using a machined aluminum block as the
heat transfer medium. The temperature control circuit is built into the unit.
Features include:
• Maximum temperature of 400°C/752°F
• An independent over-temperature cutout
• Up to eight setpoints can be stored & recalled
Even though the unit heats up rapidly, highly efficient insulation and an internal cooling fan ensures that the case
remains cool enough to handle even at maximum operating temperatures. The ThermCal400 calibrator has been
designed to comply with all relevant electromagnetic interference and electrical safety regulations.
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Specification
Figures quoted are at the base of the well at the time of calibration.
Temperature range: 5°C/9°F above ambient to 400°C/752°F
Over-temperature limit: 450°C/842°F
Display resolution: 0. °
Accuracy: ±0.25°C (30 to 200°C)
±0.4°C (200 to 400°C)
Stability (after 20 minutes): ±0.020°C (50 to 200°C)
±0.040°C (200 to 400°C)
Well to well radial uniformity: 0.0 5°C at 200°C & 0.025°C at 400°C
Heat up time 20° C to 300°C: 9 minutes
Cool down 300°C to 00°C: 8 minutes
Immersion Depth: 4.5" ( 4.3mm)
Fan Cooling: Automatic
Weight: lbs (5 Kg)
Dimensions* (H x W x D): 8.75 x 8 x 8 inches/222.25 x 203.2 x 203.2 mm
*excluding the carrying strap
Electrical supply
Voltage Cycles Power
230V 50/60Hz 900W
20V 50/60Hz 900W
Note: The above specifications are quoted for an ambient temperature range of 0°C/50°F to 30°C/86°F.
Outside this range, the quoted figures may deteriorate but the unit will still work safely.
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Workin environment
The calibrator units are designed to work safely under the following conditions:
Ambient temperature range: 5°C/9°F to 40°C/ 04°F
Humidity: Up to 95% relative humidity, non-condensing
Warnin
Warning: HIGH TEMPERATURES ARE DANGEROUS
Aviso: LAS TEMPERATURAS ELEVADAS SON PELI
HIGH TEMPERATURES ARE DANGEROUS: They can cause serious burns to operators and ignite combustible
material. Accurate Thermal Systems has taken great care in the design of these units to protect operators from
hazards, but operators should pay attention to the following points:
• USE CARE AND WEAR PROTECTIVE GLOVES TO PROTECT HANDS
• DO NOT put hot objects on or near combustible objects
• DO NOT operate the unit close to inflammable liquids or gases
• DO NOT place any liquid directly in your unit
• At all times USE COMMON SENSE
Operator Safety
All operators of Accurate Thermal Systems equipment must have available the relevant literature needed to
ensure their safety. It is important that only suitably trained personnel operate this equipment in accordance with
the instructions contained in this manual and with general safety standards and procedures. If the equipment is
used in a manner not specified by Accurate Thermal Systems, the protection provided by the equipment to the
operator may be impaired. All Accurate Thermal Systems units have been designed to conform to international
safety requirements and are fitted with a self-resetting over-temperature cutout. If a safety problem is
encountered, switch off at the power socket and remove the plug from the supply.
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Installation
1. All Accurate Thermal Systems units are supplied with a power cable.
2. Before connecting the power supply, check the voltage against the rating plate. Connect the power
cable to a suitable plug according to the table below. Note that the unit must be earth grounded
to ensure proper electrical safety.
Electrical connections:
220V-240V 110V-120V
Live Brown Black
Neutral Blue White
Earth ground Green/yellow Green
The fused plug supplied with the power lead for use in the UK is fitted with the following value fuse to
protect the cable: 230V UK 4 AMP
The fuse in the unit protects the unit and the operator
Note that units marked 230V on the rating plate work at 220V; units marked 20V work at 0V. In
both cases, however, the heating rate will degrade by approximately 8%. The rating plate is on the
rear of the unit.
3. Plug the power cable into the socket on the rear of the unit.
4. Place the unit on a suitable bench or flat workspace, or in a fume cupboard if required, ensuring that
the air inlet vents on the underside are free from obstruction.
After use, when you have finished heating samples, remember that parts of the unit may be very hot.
Take the precautions listed earlier.
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OPERATION
Preparation
. The heater design, temperature sensor and control circuit give good temperature control and
uniformity, but make sure that there is a close fit of the probes in the block to allow efficient heat
transfer. Contact us about an insert that more closely fits your probe or device being calibrated.
2. Plug the power cable into the socket in the back of the unit. Connect the power cable to the
electrical supply and switch the power on.
Settin the operatin temperature
. To set the operating temperature required, press and hold either the up or down arrow button to
increment to the value required. Alternatively you can press the («PF) key to move over to
individual digits to set higher values much quicker. After 2 seconds your value will be set & retained.
2. When you have the correct set temperature displayed the unit will start to heat or cool to that
value.
3. Once the process value/actual temperature reaches the set point, allow the block to fully stabilize for
at least 5 minutes before performing a calibration.
Enterin up to 8 setpoints for fast recall
. To input up to 8 setpoints press the first button on the left and then the 2
nd
button from the left
until the top line displays SP-0. Here you can enter up to 8 values for fast future recall. Do not
change any of the settings or values after SP-7. When finished entering values press the button on
the left one time.
You’ll need to note which value is in which location for future recall.
2. To select one of the 8 setpoints for use from the main display press the 2
nd
button from the left so
the top line displays M-SP. Next use the up arrow key to select one of the 8 setpoint values. Press
the
st
key on the left twice for the value to be accepted.
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Factory default control parameters
The parameters used in the controller have been developed by Accurate Thermal Systems to give the best unit
performance for most applications. If the need arises the “AT” autotune command can be run to further optimize
results based on the thermal block load and ambient conditions. Contact us for further support and details.
Switchin the display from De rees C to De rees F and vice versa
To switch the display press and hold down the left key until the display indicates “CN-t”, next press the 2
nd
key
from the left one time and the top line will show “d-U” which is display units. Switch to either C or F. Based on
which setting you use the parameters below must be changed to those shown. They will display by pressing the
2
nd
key from the left after setting C or F. After all values have been changed hold down the left most key so the
controller resets and accepts the new values.
Parameter De rees C De rees F
SL-H 410.0 770.0
SL-L 0.0 0.0
To correct the calibration offset – press button on left, then button 2
nd
from the left until the parameter CN5 is displayed
CN5 If in C multiply value
by 1.8 to switch to F
If in F divide value
by 1.8 to switch to C
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Operator maintenance
NOTE THAT THIS EQUIPMENT SHOULD ONLY BE DISMANTLED BY PROPERLY TRAINED PERSONNEL. REMOVING
THE FRONT OR REAR PANELS EXPOSES POTENTIALLY LETHAL VOLTAGES. THERE ARE NO OPERATOR
MAINTAINABLE PARTS WITHIN THE EQUIPMENT.
In the unlikely event that you experience any problems with your unit which cannot easily be remedied, you
should contact your supplier and return the unit if necessary. Please include any details of the fault observed and
remember to return the unit in its original packing. Accurate Thermal Systems will accept no responsibility for any
damage to units that are improperly packed for shipment. If in doubt, contact your supplier.
.
Cleaning: Before cleaning your unit, ALWAYS disconnect it from the power supply and allow it to
cool below 50° C. Your unit can be cleaned by wiping with a damp soapy cloth. Care should be
exercised to prevent water from running inside the unit. Do not use abrasive cleaners.
2.
Fuses: Your unit is protected by fuse. They should only be changed by suitably qualified
personnel. If the fuse blow persistently, a serious fault is indicated and you may need to return the
unit to your supplier for repair.
ADDITIONAL INFORMATION
The controller is factory preset with all parameters and calibration data and therefore cannot be
calibrated or serviced in the field. Please contact Accurate Thermal Systems for arrangements to have
your unit calibrated or serviced.
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Replacement Parts
The following parts may be obtained from Anville Instruments Ltd. if replacements or alternatives are required:
Part Number Description
4 63 UK 240 volt power cable with 3amp UK plug (5 amp fuse)
4 64 Euro style 240 volt power cable with R/A Schuko plug
4 50 US style 20 volt power cable
4 59 Instruction manual
4 50 Unit carrying strap
4 53 Insert extractor
ATS304 insert /8, 3/ 6, ¼, 5/ 6 & 3/8” ATS3047 Blank insert
ATS3043 Insert 5 x /4" ATS3048 insert x 9/ 6" & x /4"
ATS3044 Insert 2 x /4" & 2 x 3/8" ATS3049 insert x 5/8" & x /4"
ATS3045 Insert 2 x /4" & 2 x /2" ATS3050 insert x / 6" & x /4"
ATS3046 Insert x /4" ATS305 insert x 3/4" & x /4"
ATS3052 Carrying case
Spare Parts
Part Number Description
4 46 225 watt, 20 volt heater
4 60 Temperature controller
4 47 PRT
4 45 Solid state relay
4 65 4 amp fuse (240 volt units)
4 57 8 amp fuse ( 20 volt units)
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Contact Information
Accurate Thermal Systems LLC
6 Mohr Road
Burlington, NJ 080 6
Ph: 609-326-3 90
Email: [email protected]m
Website: www.accuthermal.com
GUARANTEE
The unit is guaranteed against any defects in material or workmanship for the period of 3 years. This period is
from the date of purchase, and within this period, all defective parts will be replaced free of charge provided that
the defect is not the result of misuse, accident or negligence. Servicing under this guarantee should be obtained
from the supplier. Not withstanding the description and specification(s) of the units contained in the Operator’s
Manual, Accurate Thermal Systems hereby reserves the right to make such changes as it sees fit to the units or
to any component of the units. This manual has been prepared solely for the convenience of Accurate Thermal
Systems customers and nothing in this Instruction Book shall be taken as a warranty, condition or representation
concerning the description, merchantability, fitness for purpose or otherwise of the units or components.
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