RTC Series
Reference
Temperature
Calibrator
RTC-187
Product Description
METEK continues to develop new techniques to improve performance, accuracy, convenience and
A
functionality of the well-known Jofra calibration products. By doing so, we maintain our position as
the leading worldwide manufacturers of temperature dry-block calibrators.
We are proud to introduce our top model RTC (Reference Temperature Calibrator), which is no exception to
the above, and even more sophisticated than any existing calibrators.
Features & Models
The RTC oers 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.
New multi-hole insert kits covering all of the most used sensor sizes.
High prole design and well-known, long lasting Jofra quality.
The new RTC calibrator comes in three dierent 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.
Key Features
High Accuracy
Down to ± 0.04° C using the external reference sensor. 4-wire True-Ohm Measurement
technology is used.
Excellent Stability, 0.005° C
Wide Temperature Range
From -45 to 180° C (-49 to 356° F).
Improved Temperature Homogeneity
Unique, active dual-zone block ensures good temperature homogeneity in the
calibration zone.
DLC (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.)
Display Indicator for Temperature Uniformity
Shows the degree of temperature uniformity in the insert when using the new DLC
technology. (B and C models only.)
Intelligent Reference Sensors
Jofra reference sensors are supplied with intelligent plugs, holding the calibration data
(coecients) 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-13v.01 guideline for the
testing of dry-blocks.
Unique Temperature Performance
DLC
90
807060
50
40
30
20
10
0
0.00
Axial Temperature Homogeneity in °C
Distance to Bottom of Insert in mm
Sensor-Under-Test
Upper ZoneMain Zone
Temperature
Dierence
Set
Temperature
Internal Reference
the entire calibration zone. The upper zone compensates for heat loss from the sensor-under-test,
and from the open top. This design also eliminates the need for extra insulation of sensors-under-
test and makes it possible to calibrate liquid-lled and other mechanical sensors.
The RTC series of calibrators provides precision
temperature calibration of sensors, what-
ever the type or format. This is accomplished
through an innovative active dual-zone heat-
ing technology.
With Jofra’s active dual-zone heating technol-
ogy, each heating zone is independently con-
trolled for precision temperature calibration.
The homogeneity in the lower part is close to
that of a laboratory liquid bath. The lower zone
ensures optimum heat dissipation throughout
DLC–Dynamic Load Compensation
during calibration. The DLC sensor measures the temperature homogeneity in the insert
and provides feedback to the active dual-zone system, which compensates the tem-
perature dierence to a minimum inside the insert. In this way, the DLC function makes
the homogeneity independent of the dierent loads of the insert, making the RTC the
best performing dry-block calibrator on the market when calibrated and tested accord-
ing to the globally accepted EURAMET/cg-13v.01 guideline for calibration and testing of
dryblocks.
The DLC system is comprised of a special dierential temperature sensor designed espe-
cially for the RTC. The sensor is placed in the insert and connected to the calibrator. When
the DLC function is enabled, the calibrator will automatically equalize the temperature ho-
mogeneity inside the insert, along with the normal temperature control and stabilization.
DLC–User Advantages
100
DLC Sensor
Slave
Master
To bring our well documented active dual-zone tech-
nology to an even higher level, we have developed
the patented DLC system.
This newly developed feature makes it possible to
perform top calibration specications without being
aected by the actual load, e.g. many sensors or very
big sensors.
The new DLC sensor improves on the RTC calibrator’s
already advanced dual-zone technology by control-
ling the homogeneity in not only the well, but inside
the insert where the sensors-under-test are placed
DLC Function On
DLC Function O
Thermo Sensitive Length
0.05 0.10 0.15
Axial temperature curves for a RTC calibrator with and without the DLC functionality activated.
0.20 0.25
Calibrating with the DLC sensor oers the following advantages:
1 Calibration of several sensors simultaneously.
2 Calibration of thick sensors.
3 Gives TSL (Thermo Sensitive Length) independency. It is no longer necessary to know the TLS of
the sensor.
4 Compensates for sensor production tolerances like the PT100 element being mounted in vari-
ous positions in the sensor.
5 Trouble free calibration of sensors with PT100 elements up to 60 mm length.
6 The DLC indicator proves that the dual-zone is active and functioning well.
7 Proves that the calibrator is working perfect. The DLC value should be very close to 0.00 when.
the calibrator is loaded with DLC sensor and an external reference sensor.
8 Together with the stability indication, the CLD indicates when the calibration values can be read.
USB Connector for Communication
Another new RTC feature is the USB connection that facilitates easy communication with Jofra-
CAL. The USB connection also supports easy download of future rmware upgrades.
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 giv-
ing a fail-safe plug’n’play calibration system.
Unique Reference Sensors
The new STS-200 reference sensors and the
DLC sensors have been specially designed.
They are both angled 90˚ and have been
customized to t the calibrator so they are
only slightly higher than the top of the RTC
calibrator.
The unique design makes it possible to
calibrate threaded sensors and sensors with
connection heads without any problems.
Easy to Carry Only 10.5 kg
The new USB connection provides fast and easy access to all laptops without the need of RS-232
to USB converters.
Future-proof through e.g. a ash capability for easy rmware upgrades as well as already integrat-
ed LAN communication, SD-card slot and USB host connectors for future use.
Intelligent Reference Sensors
The Jofra STS-200 intelligent reference sensors
as well as the new DLC sensor are all contain-
ing all individual calibration data regarding the
sensor.
Firstly, this means that the time-consuming
coecient downloading sequence with risk of
A calibrator is carried from one job to another. Therefore, it is essential that the weight of the
calibrator is as low as possible.
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 com-
promising its quality, durability and functionality.
The purpose of minimizing the weight of the RTC calibrator is to protect, especially frequent users
from overload.
Same Size Inserts
The new cooling calibrator RTC-156/157 are using the same insert dimensions (30x150mm) as
some of our existing calibrators. This makes it possible to reuse inserts from other calibrators.
Fast Temperature Calibration -24° C @ 15 min
Time is money! This is why all the new RTC calibrators have an increased heating and cooling
speed compared to all other calibrators. Heating and cooling speed has been increased by up to
20%. The implication is savings in both production downtime and general calibration costs.
New Multi-Hole Insert Kits
The navigation is menu-driven and very logical
to use and the display shows any important
information needed for the current function in
use. 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.
Two special multi-hole insert kits have been developed
to comply with calibration of almost any sensor diameter
without having to buy numerous inserts.
The rst kit is a metric insert kit consisting of only four in-
serts covering all diameters from 3 to 13mm. The other is an
imperial insert kit consisting of only three inserts covering
six dierent sizes from /” to ½”.
All inserts have holes for both STS reference sensors and
DLC sensors.
With this new insert kit in the carrying case, the user is now able to calibrate all commonly known
sensor sizes. These new insert kits are part of the JOFRA lightweight strategy.
Wide Temperature Range 225° C
The RTC-series can perform calibration over a very wide temperature range starting from -45° C
and up to 180° C (-49 to 356° F). This makes it possible to perform calibration jobs over a range of
225° C (360° F) with only one calibrator.
Easy to Read Color Display and
User-Friendly Navigation
The large display contains more detailed infor-
mation at a glance, such as:
Stability status.
Load compensation status.
Real time clock.
Serial number of reference sensor.
Sensor-under-test status.
Special Designed Carrying Case
AMETEK has designed an all-in-one-handle carrying case.
We have now made it possible to store both the STS reference sensors and DLC sensors in the
carrying case with optimum physical protection. There is room for inserts and insulation plugs to
cover all dimensions, and compartments for the new integrated support rod set, wires, manuals,
certicates, plugs, insert tools etc.
All compartments are specially designed to hold one of the above mentioned items. This makes it
very easy to keep track of any accessories.
For optimum protection of the calibrator and the accessories, the compartments are designed to
hold the accessories xed during transportation.
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 cali-
bration procedure.
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 xing holes are integrated in the calibrator
where the support rods can be mounted.
A special 90° angled external reference sensor has been designed to accommodate calibration
of sensors with a transmitter head, top connector or similar arrangement. 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.
SET-Follows-TRUE (models 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.
MVI–Secure Temperature Stability
MVI stands for ’’Mains power Variance Immuni-
MVI
NORMAL
MAINS
tently, leading to both inaccurate readings and unstable temperatures.
The JOFRA RTC calibrators all employ the MVI functionality, thus avoiding such stability problems.
The MVI functionality is obtained by running the calibrator on stabilized DC voltage.
ty’’. Unstable mains power is a major contribu-
tor to on-site calibration inaccuracies. Tradi-
tional temperature calibrators often become
unstable in production environments where
large electrical motors, heating elements, and
other devices are periodically cycled on or o.
The cycling of supply power can cause the
temperature regulator to perform inconsis-
Highest Accuracy (models 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 calibrations on-site,
while maintaining a high accuracy.
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 virtu-
ally any type of temperature sensors including:
Resistance thermometers (RTD), thermocouples
(TC), transmitters, milliamps (mA), voltage (V) and
thermostats.
The RTC calibrators can be user-programmed from
the keyboard for fully automatic sensor calibra-
tions. Once the unit is programmed, the instrument is self-operating and performs the congured
calibration routine. All calibration data are stored and can be read in the display.
Switch Test (model B only)
Users may perform a thermoswitch test and nd “Open”, “Closed” and the hysteresis (deadband)
automatically. The instrument retains the last twenty test results.
Auto-Stepping
Silent Operation
Up to 20 dierent temperature steps may be pro-
grammed including the hold time for each step.
Upon completion of an auto-step routine, the
user can easily read the results for the sensor-un-
der-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 resolu-
tion of 0.001°.
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.
Instrument Setups
The RTC series allows the user to store up to ten (10) complete instrument setups. You may store
all sorts of information including temperature units, stability criteria, use of external reference
sensors, resolutions, sensors-under-test (SUT), conversions to temperature, display contrasts, etc.
The setup may be recalled at any time.
Maximum and Minimum Temperature
From the setup menu, the user can select the maximum and minimum temperature limit for the
calibrator. This function prevents damage to the sensor-under-test caused by excessive tempera-
tures and it helps reducing sensor drift from exposures of too high temperatures. This feature can
be locked with an access code.
The RTC calibrator can be programmed to run in silent operation. This function is an advantage if
calibrating in a laboratoy or in an oce. If used in silent operation the calibrator is not using its full
speed potential.
As Found/As Left (model B only)
When running a calibration initiated from a work order, the user can select the calibration as an As
Found or an As Left calibration.
Sync Output
A synchronization output signals when the instrument is stable and may be used with ancillary
devices such as video recorders, digital cameras or as an input to a data logging device. The SYNC
output may be useful for automating and documenting your calibrations when calibrating exter-
nal reading devices.
Calibration of Indication Devices
When calibrating an indicating device in the work order mode, users may key in the results during
or after the test. Using the “Calibration info” function, the user may view the complete calibration
task, including the “Scenario” before the calibration takes place.
Hardware Requirements
INTELTM 486 processor.
(PENTIUMTM 800 MHz recommended).
32 MB RAM (64 MB recommended).
80 MB free disk space on hard disk prior to installation.
Standard VGA (800 x 600, 16 colors) compatible screen.
(1024 x 786, 256 colors recommended).
JofraCal Calibration Software
Calibration of Up To 24 Sensors
JofraCal is a highly versatile calibration soft-
ware that is supplied together with the RTC
calibrators. The software ensures easy calibra-
tion of all kind of temperature sensors, such
as RTD´s, thermocouples, transmitters and
thermoswithes. Furthermore, it can be used for
pressure calibration i.e. pressure gauges and
pressure switches. JofraCal integrates with Jofra
calibration instruments. As for temperature
calibrators, it is the whole range of tempera-
ture calibrators. Regarding pressure calibrators, it integrates with DPC-500, HPC and IPI pressure
calibrators. JofraCal also has full integration with the series of signal calibrators.
JofraCal may also be used for manual calibrations, as it can be set up to accept manual entry of
calibration data together with other liquid baths, ice points or dry-block heat sources.
The calibration data collected can be stored on a PC for later recall or analysis. The RTC calibra-
tor stores the calibration procedure and may be taken out to the process site without bringing a
personal computer.
This allows the RTC calibrator to:
Operate as a stand-alone instrument, using advanced calibration routines without the assis-
tance of a personal computer on site. The work order functionality
Prevent unauthorized changes to a calibration routine. Personnel who are not authorized to
alter a calibration routine cannot do so
Once all calibrations are completed, the data may be uploaded to the JOFRACAL for printing of
certicates. The data collected may be stored on the personal computer for later recall or analysis.
JOFRACAL oers extended output formats of the captured calibration data such as PDF le format
and ASCII/ semicolon separated text format for further processing and calculation of data in
spreadsheets and word processors.
with the Jofra ASM Scanner
Using the JOFRA RTC series together with the ASM, Advanced Signal Multi-scanner, oers a great
time-saving automatic solution to calibrate multiple temperature sensors at the same time. The
ASM series is an eight channel scanner controlled by the JOFRACAL software on a PC. Up to 3 ASM
units can be stacked to calibrate up to 24 sensors at a time. It can handle signals from 2-, 3- and 4
wire RTD’s, thermocouples, transmitters, temperature switches and voltage.
JofraCloud Remote Calibrator Operation
JofraCloud is a new way to perform remote reading and
setting of RTC temperature calibrators over unlimited
distances, with transmission coverage equal to that of a
smartphone.
The data is presented as a copy of the calibrator’s
display, and can be viewed on a PC, laptop, tablet, or
smartphone at jofracloud.com.
Once attached to any RTC (or PTC) calibrator, the gate-
way reads data every 2 seconds, and allows you to print a timestamped pdf as documentation.
JofraCloud features:
Remote Setpoints
Documented Stability Reporting
stability, an emailed report will be sent to your controlling device.
On-demand Reporting
audible notication when the calibrator reaches stability.
Multiple Calibrator Control
with a single Gateway.
–
Select a new temperature setpoint on your calibrator using your device.
–
When the calibrator reaches the set temperature and gains
–
Generate a timestamped emailed report at any time. You can get an
–
Control and communicate with up to 5 calibrators simultaneously
Specications
Functional Specications
Temperature Range
@ ambient temp. 0° C / 32° F. . . . . . . . -57 to 180° C/-71 to 356° F
@ ambient temp. 23° C / 73° F ...... -45 to 180° C/-49 to 356° F
@ ambient temp. 40° C / 104° F ..... -31 to 180° C/-24 to 356° F
Accuracy with External STS Ref. Sensor
(models B and C)
± 0.04° C / ± 0.07° F
12-month period. Relative to reference standard. Specications by use of
the external JOFRA STS-200 reference sensor
Accuracy with Internal Ref. Sensor
± 0.12° C / ± 0.18° F
Stability
± 0.005° C / ± 0.009° F
Measured after the stability indicator has been on for 15 minutes.
Measuring time is 30 minutes.
Radial Homogeneity
(difference between holes)
0.01° C / 0.02° F
Resolution (user selectable)
All Temperatures ...................1° or 0.1° or 0.01° or 0.001°
Heating Time
-45 to 23° C /-49 to 73 °F .............................7 minutes
23 to 100° C / 73 to 212° F ............................8 minutes
100 to 180° C / 212 to 356° F .........................9 minutes
Cooling Time
180 to 100 °C / 311 to 212° F .........................8 minutes
100 to 23° C / 212 to 73° F ...........................11 minutes
23 to -30° C / 73 to -22° F ............................17 minutes
-30 to -45° C / -22 to -49° F ..........................25 minutes
Time to Stability (approx.)
10 minutes
Immersion Depth
160mm / 6.3 in
Input Specications
All input specications apply to the dry-block of the calibrator running at
the respective temperature (stable plus an additional 20 minute period).
All input specications are valid for RTC-156 and RTC-157.
RTD Reference Input (models B and C)
Type ............4-wire RTD with true ohm measurements
F.S. (Full Scale) .........................................400 ohm
Accuracy (12 months) .........±(0.0012% rdg. + 0.0005% F.S.)
DLC Sensor Input (models B and C)
Temperature 12 Months
RTD Type
DLC 155
°C °F °C °F
-50 -58 ± 0.014 ± 0.025
0 32 ± 0.010 ± 0.018
180 356 ± 0.010 ± 0.018
RTD Sensor Under Test Input (model B)
F.S. (range) ............................................400 ohm
Accuracy (12 months) .............±(0.002% Rdg.+0.002% F.S)
F.S. (range) ...........................................4000 ohm
Accuracy (12 months) ...........±(0.005% Rdg. + 0.005% F.S.)
2-wire. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . add 50 mOhm
Temperature 12 Months
RTD Type
PT1000
PT500
(1)
PT100
°C °F °C °F
-50 -58 ± 0.064 ± 0.115
0 32 ± 0.073 ± 0.131
180 356 ± 0.077 ± 0.139
-50 -58 ± 0.115 ± 0.191
0 32 ± 0.127 ± 0.228
180 356 ± 0.131 ± 0.236
-50 -58 ± 0.026 ± 0.046
0 32 ± 0.026 ± 0.046
180 356 ± 0.031 ± 0.056
Temperature Unit in Display
User Selectable ......................................°C, °F, or K
Temperature 12 Months
RTD Type
PT100
Reference
(1) True ohm measurement is an eective method to eliminate errors
from induced thermoelectrical voltage.
°C °F °C °F
-50 -58 ± 0.008 ± 0.015
0 32 ± 0.008 ± 0.015
180 356 ± 0.011 ± 0.019
Specications
Thermocouple Input
Range .................................................± 78 mV
F.S. (Full Scale) ............................................78 mV
Accuracy (12 months) ..........±(0.005% Rdg. + 0.005% F.S.)
Temperature 12 Months*
TC Type
E
J
K
T
R
S
N
XK
(only in Russian
versions)
U
* Excludes CJC accuracy ± 0.3° C /± 0.54° F.
°C °F °C °F
-50 -58 ± 0.09 ± 0.17
0 32 ± 0.06 ± 0.11
180 356 ± 0.06 ± 0.11
-50 -58 ± 0.10 ± 0.18
0 32 ± 0.08 ± 0.14
180 356 ± 0.09 ± 0.16
-50 -58 ± 0.14 ± 0.24
0 32 ± 0.10 ± 0.19
180 356 ± 0.11 ± 0.20
-50 -58 ± 0.15 ± 0.26
0 32 ± 0.10 ± 0.18
180 356 ± 0.08 ± 0.15
-50 -58 ± 1.30 ± 2.35
0 32 ± 0.78 ± 1.40
180 356 ± 0.47 ± 0.83
-50 -58 ± 0.98 ± 1.76
0 32 ± 0.78 ± 1.40
180 356 ± 0.48 ± 0.86
-50 -58 ± 0.20 ± 0.35
0 32 ± 0.15 ± 0.27
180 356 ± 0.13 ± 0.23
-50 -58 ± 0.09 ± 0.15
0 32 ± 0.06 ± 0.11
180 356 ± 0.06 ± 0.11
-50 -58 ± 0.13 ± 0.24
0 32 ± 0.10 ± 0.18
180 356 ± 0.08 ± 0.14
Transmitter Supply
Output Voltage .................................. 24VDC ±10%
Output Current ..............................Maximum 28 mA
Transmitter Input mA (model B)
Range ..............................................0 to 24 mA
Accuracy (12 months) ............±(0.005% Rdg. +0.010% F.S.)
Voltage Input VDC (model B)
Range .............................................0 to 12 VDC
Accuracy (12 months) ............±(0.005% Rdg. +0.010% F.S.)
Switch Input (model B)
Switch Dry Contacts
Test Voltage ...................................Maximum 5 VDC
Test Current ..................................Maximum 2.5 mA
Mains Specifications
Voltage .......................115V (90-127) / 230V (180-254)
Frequency, non US Deliveries .............50/60 Hz (47-63 Hz)
Frequency, US Deliveries ......................60 Hz (57-63 Hz)
Power Consumption (max.) ..............................400 W
Communications Interface
Serial Data Interface ....................... USB 2.0 Device Port
Serial Data Interface ................USB 2.0 host Double Port*
LAN .............................Ethernet MAC 10/100 Base-T*
SD .....................................................SD slot*
* For future expansion.
Miscellaneous
Operating Temperature ................0 to 40° C / 32 to 104° F
Storage Temperature ..................-20 to 50° C / -4 to 122° F
Humidity ..........................................0 to 90% RH
Protection Class ...........................................IP-10
Physical Specications
Weight and Instrument Size
Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.5 kg / 23.2 lb
(LxWxH) .............362 x 171 x 363 mm / 14.3 x 6.7 x 14.3 in
Shipping (without carrying case)
Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.8 kg / 32.6 lb
(LxWxH) .............570 x 235 x 440 mm / 22.4 x 9.3 x 17.3 in
Shipping (with optional carrying case)
Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20.5 kg / 45.1 lb
(LxWxH) ...........650 x 380 x 500 mm / 25.5 x 14.9 x 19.7 in
Shipping (carrying case only)
Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0 kg / 13.2 lb
(LxWxH) ...........650 x 380 x 500 mm / 25.5 x 14.9 x 19.7 in
Inserts
Insert Dimensions
Outer Diameter ...............................29.7 mm / 1.17 in
Length ........................................150 mm / 5.91 in
Weight of Non-Drilled Insert
290 g / 10.2 oz
Use of other inserts may reduce performance of the calibrator. To get
the best results out of the calibrator, the insert dimensions, tolerance and
material is critical. We highly advise using Jofra inserts, as they guarantee
trouble free operation.
Specications
Predrilled Inserts
All predrilled inserts have holes for: 4 mm reference sensor • ¼" reference sensor • 3 mm hole for DLC
sensor All inserts are supplied with an insulation plug drilled with the necessary holes.
Instrument
Sensor Diameter
3 mm 003 127312
4 mm 004 127313
5 mm 005 127314
6 mm 006 127315
7 mm 007 127316
8 mm 008 127317
9 mm 009 127318
10 mm 010 127319
11 mm 011 127320
12 mm 012 127321
13 mm 013 127322
14 mm 014 127323
15 mm 015 127324
16 mm 016 127325
Package of Above Inserts SMM 127336
Sensor Diameter
1/8 in 125 127302
3/16 in 187 127303
1/4 in 250 127304
5/16 in 312 127305
3/8 in 375 127306
7/16 in 437 127307
1/2 in 500 127308
9/16 in 562 127309
5/8 in 625 127310
Package of Above Inserts SIM 127335
* Use the insert code, when ordering a Jofra standard insert together with
the RTC calibrator.
Insert Code* RTC-187 (A/B/C)
Instrument
Insert Code* RTC-187 (A/B/C)
Undrilled Inserts
All undrilled inserts include insulation plugs.
Instrument
Sensor Diameter
5-pack, undrilled inserts
with no holes
5-pack, undrilled inserts
with hole for DLC sensor
5-pack, undrilled inserts
with 2 holes for STS reference sensors (4mm & ¼”)
and 1 hole for DLC sensor
Undrilled insulation plug — 122781
* Use the insert code, when ordering a Jofra standard undrilled insert
together with the RTC calibrator.
Insert Code* RTC-187 (A/B/C)
UN1 127299
UN2 127300
UN3 127301
UN1
UN2
UN3
Specications
4 mm
4
mm
3 mm
4
mm
6 mm6 mm
4
3 mm
4
mm
3 mm
3 mm
4
4
4
4
4
6 mm
3 mm
mm
Multi-Hole Inserts—Metric (mm)
All inserts are supplied with an insulation plug drilled with the necessary holes.
Instrument
Sensor Diameter
Multi-hole Type 1 M01 127329
Multi-hole Type 2 M02 127330
Multi-hole Type 3 M03 127331
Multi-hole Type 4 M04 127332
Multi-hole Type 7 M07 127241
Multi-hole Type 8 M08 127242
Multi-hole Type 9 M09 127243
Set of 4 Metric Multi Inserts,
3 to 16 mm. (Includes 127332,
127241, 127242, and 127243)
* Use the insert code, when ordering a Jofra standard multi-hole insert
together with the RTC calibrator.
7 mm
mm
3 mm
13 mm
1/4"
Insert Code* RTC-187 (A/B/C)
SM 127326
8 mm
mm
3 mm
12 mm
1/4"
mm
mm
mm
Multi-Hole Inserts—Imperial (in)
All inserts are supplied with an insulation plug drilled with the necessary holes.
3 mm
Insert Code* RTC-187 (A/B/C)
1/4"
4 mm
4
Sensor Diameter
Multi-hole Type 5 M05 127327
Multi-hole Type 6 M06 127328
Multi-hole Type 10 M010 127247
6 mm
Multi-hole M01 Multi-hole M05
4 mm
6 mm
Set of 3 Imperial Inserts,
SI 127311
1/8 to 1/2 in. (Includes 127308,
127328, and 127247)
* Use the insert code, when ordering a Jofra standard multi-hole insert
together with the RTC calibrator.
1/4"
6
Multi-hole M02 Multi-hole M06
3 mm
3 mm
1/4"
3 mm
3 mm
6
3 mm
3 mm
Multi-hole M03 Multi-hole M10Multi-hole M08Multi-hole M07
Instrument
3 mm
mm
1/8"
mm
3 mm
4 mm
3 mm
1/4"
5/16"
1/4"
3/8"
1/4"
1/4"
1/4"
1/4"
1/4"
3/16"
1/4"
7/16"
10 mm
mm
3 mm
11 mm
mm
1/4"
3 mm
1/4"
9 mm
Multi-hole M04Multi-hole M09
6 mm
4
5 mm
Options & Accessories
Standard Delivery
Models A, B, and C Include:
RTC dry-block calibrator (user specied)
Mains power cable (user specied)
Traceable certicate - temperature performance
Tool for insertion tubes
JOFRACAL
USB cable
Set of rubber cones for insulation plugs
Manual
Model B Instruments Also Include:
Test cables (2 x red, 2 x black)
Traceable certicate - input performance for reference sensor
and DLC sensor
Traceable certicate - input performance for sensor-under-test
inputs
Model C Instruments Also Include:
Traceable certicate - input performance for reference sensor
and DLC sensor
Accessories
Extra xture for sensor grip ..............................125066
Extra sensor grip ........................................125067
Mini-Jack connector for stable relay output ..............122771
–
Thermocouple Male Plug
Thermocouple Male Plug
Thermocouple Male Plug
Thermocouple Male Plug
Thermocouple Male Plug
Thermocouple Male Plug
Type J – Black ..............120516
–
Type K – Yellow ............120517
–
Type N – Orange ...........120514
–
Type T – Blue ..............120515
–
Type R / S – Green .........120518
–
Type Cu-Cu – White ........120519
Options
Carrying Case–Option CT
With our new special designed carrying case it is now possible
to store all your sensors in the case with an optimum physical
protection. With improved integrated trolley system for easy
and safe transportation.
Functional Comparison
Dual-zone heating/cooling block
–
Mains Variance Immunity (or similar)
MVI
Stability indicator
Automatic step function
USB communication
Display resolution 0.001°
Programmable max. temperature
SYNC output (for external recording device)
Calibration of short sensors in special insert
External precision reference sensor input
External precision DLC reference sensor input
“SET” follows “TRUE”
Load compensation functionality
Input for RTD, TC, V, mA
4-20 mA transmitter input incl. 24 VDC supply
All inputs scalable to temperature
Automatic switch test (open, close, and hysteresis)
Download of calibration work orders from PC
Upload of calibration results (as found & as left)
Support Rod Set–Option SR
Support rod for sensors to be mounted on all Jofra RTC
dry-block calibrators. Holds the sensor-under-test in its position,
while calibrating.
Includes 2 sensor grips and 2 xtures for sensor grips.
Model A Model B Model C
Model A
Model B
Model C
Ordering Information
Base Model Number
RTC187 ............................ RTC-187 series, -45 to 180° C (-49 to 356° F)
Model Version
A .............................. Basic model, without input
B .............................. Full model, incl. DLC sensor input, Reference sensor input, Sensor-under-test input
C .............................. Middle model, incl. DLC sensor input, Reference sensor input
Power Supply (US deliveries 60 Hz only)
115 ........................ 115 VAC
230 ........................ 230 VAC
Mains Power Cable
A ...................... European, 230 V
B ...................... USA/Canada, 115 V
C ...................... UK , 240 V
D ...................... South Africa, 220 V
E ...................... Italy, 220 V
F ...................... Australia, 240 V
G ...................... Denmark, 230 V
H ...................... Switzerland, 220 V
I ....................... Israel, 230 V
Insert Type and Size
NON ............... No insert selected (standard)
UNX ............... 1 x Undrilled Insert (Please see Insert selection for code)
XXX. . . . . . . . . . . . . . . . 1 x Single hole insert (Please see Insert selection for code)
MXX ............... 1 x Multi hole insert (Please see Insert selection for code)
SIX ................ Set of 3 Imperial multi hole inserts. Covering holes from 1/8" to 1/2"
SMX ............... Set of 4 Metric multi hole inserts. Covering holes from 3 mm to 13 mm
SIM ................ Set of 9 Imperial inserts. Covering holes from 1/8" to 5/8"
SMM. . . . . . . . . . . . . . . Set of 14 Metric inserts. Covering holes from 3 mm to 16 mm
Dynamic Load Compensation (B and C models only–optional)
DLC. . . . . . . . . . . . . DLC sensor
STS Reference Sensor (B and C models only–optional)
R17 ......... STS-200 Ref. sensor. Dia. 4 mm. Length 161 mm (STS200A918EH)
R18 ......... STS-200 Ref. sensor. Dia. 1/4”. Length 161 mm (STS200B918EH)
Calibration Certicate
F ....... Traceable Certicate to International standards
RTC187 B 230 A SM DLC R17 EA CT
H ....... Accredited Certicate
EA ...... Full EURAMET Accredited Certicate
HS ...... System Calibration
EAS ..... System Calibration
EASD ... System Calibration
Base Model Number
CT .. Solid Protective Carrying case with trolley
SR .. Support rod set
TR .. Solid Protective Carrying case with trolley & Support rod set
–
ISO17025
–
Accredited Certicate – ISO17025 (B & C model only)
–
Full EURAMET Accredited Certicate – ISO17025 (B & C model only)
–
Full EURAMET Accredited Certicate with DLC – ISO17025 (B & C model only)
–
ISO17025
Sample Order Number
RTC187B230ASMDLCR17EACT
JOFRA RTC-187 B with 230VAC, EU power cord,
set of metric inserts, DLC, 4 mm diameter STS-200
reference sensor, full EA temperature calibration
certicate, and carrying case with trolley.
SS-RTC-187 ISSUE 0418
Singapore
Tel +65 6484 2388
jofra@ametek.com
USA, Florida
Tel +1 (800) 527 9999
cal.info@ametek.com
USA, California
Tel +1 (800) 444 1850
crystal@ametek.com
India
Tel +91 22 2836 4750
jofra@ametek.com
China, Shanghai
Tel +86 21 5868 5111
jofra.sales@ametek.com.cn
*
China, Beijing
Tel +86 10 8526 2111
jofra.sales@ametek.com.cn
United Kingdom
Tel +44 (0) 1243 833 302
caluk.sales@ametek.com
France
Tel +33 (0) 30 68 89 40
general.lloyd-instruments@ametek.fr
Germany
Tel +49 (0) 2159 9136 510
info.mct-de@ametek.de
*
Denmark
Tel +45 4816 8000
jofra@ametek.com
ISO 17025 accredited calibration lab.
*
ametekcalibration.com
No part of this document may be reproduced or
modied in any form or by any means, electronic
or mechanical, without express written permission
from Crystal Engineering Corporation.
©2018 AMETEK Incorporated
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