Ametek RTC-158, RTC-250 Specifications
temperature
» High accuracy
Down to ±0.04°C using the external reference sensor. 4-wire True-Ohm-Measurement
technology is used
» Excellent stability 0.01˚C
» Wide temperature range
RTC-158 from -22 to 155°C (-8 to 311°F)
RTC-250 from 28 to 250°C (82 to 482°F)
» Excellent temperature
homogeneity
Unique active dual-zone block ensures
good temperature homogeneity in
the calibration zone
Both for liquid bath
Reference Temperature Calibrator
RTC-158 & RTC-250
and dry-block use
» DLC
Patent
pending!
Dynamic Load Compensation
Perfect temperature uniformity in the
insert, even when calibrating large sensors or many sensors at a time.
B and C models only
» Temperature uniformity indicator
Shows the degree of temperature uniformity in
the insert when using the new DLC technology.
B and C models only
» New sensor basket
In combination with the stirrer the
newly developed sensor basket ensures
virtually zero axial and radial gradients in the
calibration zone
» Intelligent reference sensors
JOFRA reference sensors are supplied with
intelligent plugs, holding the calibration data
(coefficients) of the reference sensor. This is
a truly plug’n’play calibration system
» USB communication
All RTC calibrators communicate via an
easy-to-use USB port
» EURAMET
Best performing dry-block with regard to the
EURAMET/cg-13/v.01 guideline for testing of
dry-blocks
NEW!
Liquid Bath
AMETEK continues to develop new techniques to improve performance,
accuracy, convenience and functionality of the well-known JOFRA calibration products. By doing so, we maintain our position as the leading
worldwide manufacturer of temperature dry-block calibrators.
Advantages of the combined liquid bath/dry-block calibrator
Calibration of many sensors at a time due to more space for example
in connection with validation of many thermocouples, which saves
time
• Automatic calibration of as many as 24 sensors at a time
• For customers, who only want to use liquid baths
• For calibration of odd sizes and shapes of sensors including
sanitary sensors
WET = no need for inserts, that fit the sensors
DRY = more space for calibration of special sensors
• Industries who need to calibrate many sensors at a time or short
sensors can benefit from the big well
• JOFRACAL software and RTC B-models can handle on-line
calibration and documentation of multiple sensors calibrated
simultaneously
Dry-Block
ISO 9001 Manufacturer
Specification Sheet, SS-RTC-158/250
The RTC-158 and RTC-250
We are proud to introduce our new top model RTC
(Reference Temperature Calibrator) series, which is even
more sophisticated than any existing calibrators.
The RTC offers many new fantastic features, such as:
• Patent pending DLC, Dynamic Load Compensation
system, for perfect temperature uniformity in the insert
• Unique intelligent sensors for plug’n’play connection
• USB connector for communication
• Easy-to-read color VGA display with perfect overview of
the actual status
• Intuitive, fast and user-friendly navigation
• Lightweight and easy to carry around
• New functional carrying case design
• Multi-hole inserts covering all the most used sensor
sizes
• High profile design and the well-known long lasting
JOFRA quality
The new RTC calibrator comes in three different models –
A, B, and C.
• RTC-A reference temperature calibrator
• RTC-B reference temperature calibrator with input for
reference sensor, DLC sensor and sensors-under-test
• RTC-C reference temperature calibrator with input for
reference sensor and DLC sensor
Liquid bath versus dry-block kit
The basic advantages of the liquid bath configuration versus the dry-block configuration are as follows:
• You do not need insertion tubes for all your different
types of sensors
• You can calibrate sensors, which do not fit into
insertion tubes
• You can calibrate glass thermometers and gas or liquid
filled sensors
• You are ready to calibrate right away no matter what
sensor you may have
Liquid bath / large diameter insert
The RTC-158/250 are fitted with a 160 mm (6.3 in) deep
well with a diameter of 63.5 mm (2.5 in) and can be used
both as dry-block calibrators and as liquid calibration
baths with a magnetic stirrer.
A liquid bath and a dry-block diameter of 63.5 mm (2.5 in),
which is twice the size of any other dry-block, are both
new features. With these options, it is now possible to
calibrate even more temperature sensors simultaneously
and to calibrate large as well as odd sizes and shapes of
sensors, which is not possible with the remaining product
range.
RTC-158/250 can be used without an external reference
sensor, but if an STS-200 reference sensor is connected
directly to a B or C version or the reference thermometer
DTI-1000, you will obtain better accuracies and thereby
use the full potential of the calibrators.
The basic advantages of the dry-block configuration
versus the liquid bath configuration are as follows:
• No hazardous hot liquids
• Easier to handle insertion tubes than liquids
• More convenient to carry than when filled with liquid
• No need for external exhaustion
• 100% repeatability in the sensor position in the block
All specifications given in the liquid bath configuration are
based on the silicone oil supplied and recommended by
JOFRA.
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Reference Temperature Calibrator • RTC-158/250
NEW!
plug’n’play
Intelligent reference sensors
The JOFRA STS-200 intelligent reference sensor as well
as the new DLC sensor are both containing all individual
calibration data regarding the sensor.
Firstly, this means that the time-consuming coefficient
downloading sequence with risk of errors is no longer necessary. Secondly, the user can change the reference sensor
and be up and running immediately.
With the intelligent sensors, AMETEK has eliminated a
source of error and the system is now giving a fail-safe
plug’n’play calibration system.
Unique reference sensors
The new STS-200 reference
sensor and the DLC sensor have both been specially designed. They are both
angled 90˚ and customized to
fit the calibrator so they are
only slightly higher than the
top of the RTC calibrator.
The unique design allows calibration of threaded sensors
and sensors with connection
heads without any problems.
Easy to carry
A calibrator is carried from one job to another. Therefore,
it is essential that the weight of the calibrator is as low as
possible.
These inserts have holes
for both the DLC and
two reference sensors
(4 mm and 1/4”). These
holes are marked for
correct use.
With this multi-hole insert
in the carrying case the
user is able to calibrate
all the most commonly
known sensor sizes.
New designed basket
The sensor basket is designed to prevent sensors from interfering with the stirrer. Numerous
tests have been carried out to find the optimum design of the sensor basket in regard
to create the largest possible temperature homogeneous zone. This work
has resulted in a new sensor basket
performing virtually zero axial and radial
gradients in the calibration zone.
Intelligent recalibration information
In order to comply with ISO, SOP’s and FDA it is imperative
that the calibration equipment never exceeds the expiry of
the calibration certificate. RTC calibrators are constantly
checking calibration dates on the calibrator as well as for
the connected STS and DLC sensors. If the calibration
period has expired, a warning will appear in the display.
This feature prevents costly consequence evaluation.
Easy-to-read
color display and user-friendly navigation
The new 5.7” full color VGA display is very easy to read.
The main temperatures, like SET, READ, TRUE and SUT
(Sensor under test) are always displayed at all stages of the
programming or calibration procedure.
We have thoroughly included the weight issue in our design
and have developed new design techniques that have
made the RTC calibrator lightweight and easy to carry
around without compromising its quality, durability and
functionality.
The purpose of minimizing the weight of the RTC calibrator
is to protect especially frequent users from overload.
Improved temperature calibration
Time is money! This is why all new RTC calibrators have an
increased heating and cooling speed. Heating and cooling
speed has been increased by up to 25%. The implication is
savings in both production downtime and general calibration costs.
Multi-hole inserts
With the purpose of covering all sensor sizes, special multihole inserts have been developed.
Multi-hole inserts come in metric and imperial sizes.
Metric covers all standard sizes from 3 to 12 mm.
Imperial covers all standard sizes from 1/8 to 1/2 in.
The navigation is menu-driven and very logical to use and
the display shows any important information needed for
the current function. The communication windows pop up
and are followed by discrete sound messages. The display
is very bright and the main information can easily be read
from a distance.
NEW!
The large display contains more detailed information at a
glance, such as: Stability status • Load compensation status • Real time clock • Serial number of reference sensor •
Sensor-under-test status
www.jofra.com 3RTC-158/250 • Reference Temperature Calibrator
NEW!
Integrated support rod
The new integrated support rod is part of the reduced
weight philosophy. It is lightweight and very easy to mount
on the RTC. Two fixing holes are integrated in the calibrator
where the support rods can be mounted. The support rod
is especially useful in bath calibration.
Special designed carrying case
AMETEK has designed an all-in-one carrying case.
We have now made it possible to
store both the STS reference sensors and the DLC sensor in the carrying case with an optimum physical
protection. There is room for inserts,
insulation plugs and calibration oil
as well as compartments for the
new integrated support rod set,
wires, manuals, certificates, plugs,
insert tools, etc.
All rooms are specially designed to hold one of the above
mentioned items. This makes it very easy to keep track of
any accessories.
SET-Follows-TRUE (model B & C only)
Available on B and C models only, the “SET-Follows-TRUE”
makes the instrument tune in until the temperature reading
of the external reference “TRUE” meets the desired “SET”
temperature. This feature is important when it is critical that
the temperature of the calibration zone matches the desired
temperature when measured with accurate external reference sensors.
Reading of sensor-under-test (model B only)
Model B of the RTC is equipped with a built-in accurate measuring circuit for sensor-under-test (input), which
enables measurement of virtually any type of temperature
sensors including: Resistance thermometers (RTD), thermocouples (TC), transmitters, milliamps (mA), voltage (V)
and thermostats.
The RTC-B calibrators can be programmed from the keyboard for fully automatic sensor calibration. Once the unit is
programmed, the instrument is self-operating and performs
the configured calibration routine. All calibration data are
stored and can be read in the display.
For optimum protection of the calibrator and the accessories, the compartments are designed to hold the accessories
fixed during transportation.
The carrying case comes with integrated wheels for easy
transportation.
MVI - Secure temperature stability
MVI stands for ’’Mains power Variance Immunity’’.
Unstable mains power is a major contributor to on-site
calibration inaccuracies. Traditional temperature calibrators often become unstable in production environments
where large electrical motors, heating elements, and other
devices are periodically cycled on or off. The cycling of supply power can cause the temperature regulator to perform
inconsistently, leading to both inaccurate readings and
unstable temperatures.
Switch test (model B only)
Users may perform a thermoswitch test and find “Open”,
“Closed” and the hysteresis (deadband) automatically. The
instrument retains the last twenty test results.
Auto-stepping
Up to 20 different temperature steps may be programmed
including the hold time for each step. Upon completion of
an auto step routine, the user can easily read the results
for the sensor-under-test on the RTC display. Results from
twenty auto-step calibrations are stored.
The “Set temperature” feature allows the user to set the
exact desired temperature with a resolution of 0.001°.
Highest accuracy (model B & C only)
The RTC series calibrators may be supplied with a built-in
reference thermometer to be used with an external reference sensor. This feature allows the instrument to perform
calibration on-site, while maintaining a high accuracy.
The user can decide whether to read the built-in reference
sensor or the more accurate angled reference sensor from
the large, easy-to-read LCD display of the calibrator. The
external sensor and the internal sensor readings are independent of one another.
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Enhanced stability
A stability indicator shows when the RTC calibrator has
reached the desired temperature and is stable. The user
may change the stability criteria for the external reference
and the sensor-under-test quickly and simply. The stability criterion is the user’s security of a correct calibration.
A count-down timer is displayed next to the temperature
read-out.
Reference Temperature Calibrator • RTC-158/250
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