There are three models of the RTC-157 these include.
With free of charge calibration and certification with purchase of the RTC-157.
Contact us if you require any assistance with your choice of any Ametek Jofra calibrators and accessories.
Ametek Jofra RTC-157 reference temperature calibrator has been designed to improve performance, accuracy and functionality with its state-of-the-art features.
There are three models of the RTC-157 these include.
To bring the active dual-zone technology to an even higher level. This feature makes it possible to perform top calibration specifications without being affected by the actual load, e.g., many sensors or big sensors.
The DLC sensor improves on the RTC calibrators already advanced dual-zone technology by controlling the homogeneity in not only the well, but inside the insert where the sensors-under test are placed during calibration. The DLC sensor provide feedback to the active dual-zone systems, which compensates the temperature difference to a minimum inside the insert. The DLC function makes the homogeneity independent of the different loads of the insert, making the RTC one of the best performing dry-block calibrator on the market.
The DLC system is comprised of a differential temperature sensor. The sensor is placed in the insert and connect to the calibrator. When the DLC function is enabled, the calibrator will automatically equalize the temperature homogeneity inside the insert, along with the normal temperature control and stabilization.
With the active dual zone heating technology, each heating zone is independently controlled 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 the entire calibration zone. The upper zone compensates for heat loss from the sensor-under-test and from the open top. This eliminates the need for extra insulation of sensors-under-test and makes it possible to calibrate liquid-filled and other mechanical sensors.
The USB connection facilitates easy communication with JofraCal. The USB connection also supports easy to download of future firmware upgrades. The 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 flash capability for easy firmware upgrades as well as LAN communication, SD-card slot, and USB host connectors for future use.
The Jofra STS-200 intelligent reference sensors and the DLC sensor contain individual calibration data regarding the sensor. Firstly, this means 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.
The STS-200 reference sensors and DLC sensors have been designed with a 90° angle and fit the calibrator so that they are only slightly higher than the top of the RTC calibrator. The design makes it possible to calibrate threaded sensors and sensors with connection heads without any problems.
The RTC calibrators have an increased heating and cooling speed compared to all other calibrators. Heating and cooling speeds have been increased by up to 20%. This implication is savings in both production downtime and general calibration costs.
Two special multi-hole insert kits are available to comply with the calibration of almost any sensor diameter without having to buy numerous inserts.
The first kit a metric insert kit consisting of only four inserts covering all diameters from 3mm to 13mm. The other is an imperial insert kit consisting of three inserts covering six different sizes from 1/8” to ½”.
All inserts have holes for both STS reference sensors and DLC sensors.
The carry case is designed to store both the STS sensors and DLC sensors in the carry case with optimum physical protection. There is room for inserts and insulation plugs for cover all dimensions and compartments for the integrated support rod set, wires, manual, certificates, plugs, inserts tools etc.
All compartments are to hold one of the above-mentioned items. This makes it easy to keep track of any accessories.
The compartments are designed to hold the accessories fixed during transportation.
The 5.7” full colour VGA display is very is 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.
The navigation is menu-driven and logical to use. 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 form a distance. The advanced simplicity RTC user interface is available in English, German, Chinese and Japanese.
The large display contains more information at a glance, such as:
JofraCal is a highly versatile calibration software that is supplied with the RTC calibrators. The software ensures easy calibration of all kinds of temperature sensors, such as RTD’s, thermocouples, transmitters and thermoswitches. JofraCal may 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 stores on a PC for recall at a later date. The RTC calibrator stores the calibration procedure and may be taken out to the process site without the need of a PC. This allows the RTC calibrator to:
Once all calibrations are complete, the data may be uploaded to JofraCal for the printing of certificates. The data collected may be stored on the PC for later analysis.
JofraCal offers extended output formats of the captured calibration data such as PDF, ASCII / semicolon separated text format for further processing and calculation of data in spreadsheets and word processors.
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.
Temperature Range |
|
@ Ambient temperature 0°C / 32°F |
-57°C to +155°C / -71°F to +311°F |
@ Ambient temperature 23°C / 73°F |
-45°C to +155°C / -49°F to +311°F |
@ Ambient temperature 40°C / 104°F |
-31°C to +155°C / -24°F to +311°F |
Accuracy with External STS Reference Sensor (models B and C) |
|
± 0.04°C / ± 0.07°F |
|
Accuracy with Internal Reference Sensor (models A, B and C) |
|
± 0.10°C / ± 0.18°F |
|
Stability |
|
± 0.005°C / ± 0.009°F |
|
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° |
Temperature Unit in Display |
|
User Selectable |
°C, °F or K |
Heating Time |
|
-45°C to +23°C / -49°F to +73°F |
7 minutes |
+23°C to +155°C / +73°F to +311°F |
17 minutes |
Cooling Time |
|
+155°C to +100°C / +311°F to +212°F |
5 minutes |
+100°C to +23°C / +212°F to +73°F |
10 minutes |
+23°C to -30°C / +73°F to -22°F |
17 minutes |
-30°C to -45°C / -22°F to -49°F |
25 minutes |
Time to Stability |
|
10 minutes |
|
Immersion Depth |
|
160mm / 6.3 in |
All input specifications apply to the dry-block of the calibrator running at the respective temperature (stable plus an additional 20-minute period).
RTD Reference Input (models B and C)
|
|
Type |
4-wire RTD with true ohm measurements |
F.S. (Full Scale) |
400 ohms |
Accuracy (12 months) |
± (0.0012% rdg. + 0.0005% F.S.) |
PT100 Reference |
-50°C ±0.008°C / -58°F ± 0.015°F |
0°C ±0.008°C / +32°F ±0.015ׄ°F |
|
+155°C ±0.011°C / +311°F ±0.019°F |
|
DLC Sensor Input
|
|
DLC 157 |
-50°C ±0.014°C / -58°F ± 0.025°F |
0°C ±0.010°C / +32°F ±0.018ׄ°F |
|
+155°C ±0.010°C / +311°F ±0.018°F |
|
RTD Sensor Under Test Input (model B)
|
|
F.S. (range) |
400 ohms |
Accuracy (12 months) |
± (0.002% rdg + 0.002% F.S) |
F.S. (range) |
4000 ohms |
Accuracy (12 months) |
± (0.005% rdg + 0.005% F.S) |
2-wire |
Add 50 mohm |
RTD Type |
|
PT1000 |
-50°C ±0.064°C / -58°F ± 0.115°F |
0°C ±0.073°C / +32°F ±0.131ׄ°F |
|
+155°C ±0.076°C / +311°F ±0.136°F |
|
PT500 |
-50°C ±0.151°C / -58°F ± 0.191°F |
0°C ±0.127°C / +32°F ±0.228ׄ°F |
|
+155°C ±0.142°C / +311°F ±0.255°F |
|
PT100 |
-50°C ±0.026°C / -58°F ± 0.046°F |
0°C ±0.026°C / +32°F ±0.046ׄ°F |
|
+155°C ±0.030°C / +311°F ±0.054°F |
|
Thermocouple Input
|
|
Range |
± 78mV |
F.S. (full scale) |
78 mV |
Accuracy (12 months) |
± (0.005% rdg. + 0.005% F.S.) |
TC Type |
|
E |
-50°C ±0.09°C / -58°F ± 0.17°F |
0°C ±0.06°C / +32°F ±0.11ׄ°F |
|
+155°C ±0.06°C / +311°F ±0.11°F |
|
J |
-50°C ±0.10°C / -58°F ± 0.18°F |
0°C ±0.08°C / +32°F ±0.14ׄ°F |
|
+155°C ±0.09°C / +311°F ±0.16°F |
|
K |
-50°C ±0.14°C / -58°F ± 0.24°F |
0°C ±0.10°C / +32°F ±0.19ׄ°F |
|
+155°C ±0.11°C / +311°F ±0.20°F |
|
T |
-50°C ±0.15°C / -58°F ± 0.26°F |
0°C ±0.10°C / +32°F ±0.18ׄ°F |
|
+155°C ±0.08°C / +311°F ±0.15°F |
|
R |
-50°C ±1.30°C / -58°F ± 2.35°F |
0°C ±0.78°C / +32°F ±1.40ׄ°F |
|
+155°C ±0.47°C / +311°F ±0.84°F |
|
S |
-50°C ±0.98°C / -58°F ± 1.76°F |
0°C ±0.78°C / +32°F ±1.40ׄ°F |
|
+155°C ±0.49°C / +311°F ±0.89°F |
|
N |
-50°C ±0.20°C / -58°F ± 0.35°F |
0°C ±0.15°C / +32°F ±0.27ׄ°F |
|
+155°C ±0.13°C / +311°F ±0.23°F |
|
U |
-50°C ±0.13°C / -58°F ± 0.24°F |
0°C ±0.10°C / +32°F ±0.18ׄ°F |
|
+155°C ±0.08°C / +311°F ±0.14°F |
|
Transmitter Supply |
|
Output Voltage |
24VDC ±10% |
Output Current |
Maximum 28 mA |
Transmitter Input mA (model B) |
|
Range |
0-24 mA |
Accuracy (12 months) |
± (0.005% rdg. + 0.010% F.S.) |
Voltage Input VDC (model B) |
|
Range |
0-12 VDC |
Accuracy (12 months) |
± (0.005% rdg. + 0.010% F.S.) |
Switch Input (model B) |
|
Test Voltage |
Maximum 5 VDC |
Test Current |
Maximum 2.5 mA |
Weight and Instrument Size |
|
Weight |
10.5 kg / 23.2 lb |
(L x W x H) |
362 x 171 x 363 mm / 14.3 x 6.7 x 14.3 in |
All predrilled inserts have holes for: 4 mm reference sensor, ¼ in reference sensor, 3 mm hole for DLC sensor. All inserts are supplied with an insulation plug drilled with the necessary holes.
Sensor Diameter |
Insert Code * |
RTC-156/157 (A/B/C) |
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 |
Pack of the above inserts |
SMM |
127326 |
Sensor Diameter |
Insert Code * |
RTC-156/157 (A/B/C) |
1/8 in |
125 |
127302 |
3/16 in |
187 |
127303 |
1/4 in |
250 |
127314 |
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 |
Pack of above Inserts |
SIM |
127335 |
*Use insert code when ordering a Jofra standard insert together with the RTC calibrator
All undrilled inserts include insulation plugs.
Sensor Diameter |
Insert Code * |
RTC-156/157 (A/B/C) |
5 – pack, undrilled inserts with no holes |
UN1 |
127299 |
5 – pack, undrilled inserts with hole for DLC sensor |
UN2 |
127300 |
5 – pack, undrilled inserts with 2 holes for STS reference sensors (4mm & ¼ in) and 1 hole for DLC sensor |
UN3 |
127301 |
Undrilled Insulation plug |
----- |
122781 |
*Use insert code when ordering a Jofra standard undrilled insert together with the RTC calibrator
All inserts are supplied with an insulting plug drilled with the necessary holes.
Insert Type |
Insert Code * |
RTC-156/157 (A/B/C) |
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) |
SM |
127326 |
*Use insert code when ordering a Jofra standard multi-hole insert together with the RTC calibrator
Insert Type |
Insert Code * |
RTC-156/157 (A/B/C) |
Multi-hole Type 5 |
M05 |
127327 |
Multi-hole Type 6 |
M06 |
127328 |
Multi-hole Type 10 |
M10 |
127247 |
Set of 3 imperial inserts, 1/8 in to ½ in. (includes 127308, 127328 and 127247) |
SI
|
127311 |
*Use insert code when ordering a Jofra standard multi-hole insert together with the RTC calibrator
Standard Delivery – Model A, B and C Includes:
Model B also Includes:
Model C also includes:
Extra fixture for sensor grip |
125066 |
Extra sensor grip |
125067 |
Mini-Jack connector for stable relay output |
122771 |
Thermocouple Male Plug – Type J - Black |
120516 |
Thermocouple Male Plug – Type K - Yellow |
120517 |
Thermocouple Male Plug – Type N - Orange |
120514 |
Thermocouple Male Plug – Type T - Blue |
120515 |
Thermocouple Male Plug – Type R/S - Green |
120518 |
Thermocouple Male Plug – Type Cu-Cu - White |
120519 |
Carrying case – CT
With the specially designed carrying case it is possible to store all your sensors in the case with an optimum physical protection. With integrated trolley system for easy transportation.
Support Rod Set – 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 fixtures for sensor grips.
|
Model A |
Model B |
Model C |
Dual-zone heating / cooling block |
* |
* |
* |
MVI – Mains Variance Immunity (or similar) |
* |
* |
* |
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 |
|
* |
* |
Inputs for RTD, TC, V, mA |
|
* |
|
4-20 mA transmitter input incl. 24VDC 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) |
|
* |
|
We supply a free of charge traceable calibration and certification with the purchase of a new RTC-157 dry-block calibrator.
Contact us if you require any assistance with your choice of any Ametek Jofra calibrators and accessories.