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Ametek Jofra RTC-158 Reference Temperature Calibrators

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Ametek RTC-158 & RTC-250 Reference Temperature Calibrators
Ametek RTC-158 & RTC-250 Reference Temperature CalibratorsDigital Temperature DisplayDLC & External Reference SensorsMulti-Hole InsertUSB & PortsSolid Protective Carrying Case with Trolley
Price: From $12,335.00 to $14,375.00
Delivery within 1 week to 21 days. If needed sooner, please contact us.
Manufacturer: AMETEK/JOFRA

Choose Your Model

Model version:

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Power supply (US deliveries 60 Hz only)
Mains power cable type
Insert type and size
External Reference Sensor (Optional full & middle models only)
Calibration Certificate
Accessories

Ametek RTC-158 & RTC-250 Reference Temperature Calibrators

Combines dry block and liquid bath technology to calibrate oddly sized and shaped sensors or multiple sensors at once


  • 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)
  • Improved temperature homogeneity
  •      Unique active dual-zone block ensures good temperature homogeneity in the calibration zone
  • Dynamic Load Compensation (DLC)
  •      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
  • 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

    The Ametek RTC-158 and RTC-250 are advanced reference temperature calibrators. Combining dry-block and liquid bath technology, the RTC-158 and RTC-250 are designed to calibrate oddly sized and shaped sensors or multiple sensors at once. Both calibrators offer a host of innovative features along with AMETEK's long history of providing reliable, low-drift calibration instruments.

    The Ameteck RTC-158 has a temperature range of -22° to 155°C (-8° to 311°F), while the RTC-250 has a temperature range of 28° to 250°C (82° to 482°F). Both units boast outstanding accuracy and stability while featuring Ametek's Dynamic Load Compensation (DLC) system that provides perfect temperature uniformity in the insert no matter the number or size of the sensors immersed. The calibrators also offer unique intelligent sensors for plug ‘n' play connectivity, an easy-to-read full-color 5.7-inch VGA display, and a USB connection for improved communications and software downloads. The Ametek RTC-158 and RTC-250 reference temperature calibrators are available in three configurations: RTC-A reference temperature calibrator, RTC-B reference temperature calibrator with input for reference sensor, DLC sensor and sensors-under-test, and RTC-C reference temperature calibrator with input for reference sensor and DLC sensor. The RTC-158 and RTC-250 can be used without an external reference sensor. However, users will obtain better accuracies and realize the calibrator's full potential by utilizing the STS-200 reference sensor. Both the STS-200 and DLC sensors contain all individual calibration data regarding the sensor, allowing users to change the reference sensor and be up and running immediately.

    The RTC-158 and RTC-250 feature a rugged, lightweight design and multi-hole inserts that cover most commonly used sensor sizes. A unique design allows the units to calibrate threaded sensors and sensors with connection heads. The 160 mm deep well has a diameter of 63.5 mm, which is twice the size of any other dry-block calibrator. Either calibrator can be used both as a dry-block or liquid calibration bath with magnetic stirrer.

    The Ametek RTC-158 and RTC-250 (models A, B and C) ship complete with the following:

    • Mains power cable
    • Traceable calibration certificate (temperature performance)
    • Tool for insertion tubes
    • JOFRACAL software
    • AMETRIM software
    • USB cable
    • Set of rubber cones for insulation plugs
    • Manuals

    Model B contains the following extra items:

    • Test cables (2 x red, 2 x black)
    • Traceable certificate (input performance for reference sensor and DLC sensor)
    • Traceable certificate (input performance for sensor-under-test inputs)

    Model C contains the following extra items:

    • Traceable certificate (input performance for reference sensor and DLC sensor)
    Functional Comparison
      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  
    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)    




    Temperature range
    RTC-158
    @ ambient temp. 0°C/32°F.........-37 to 155°C/-35 to 311°F
    @ ambient temp. 23°C/73°F.........-22 to 155°C/-8 to 311°F
    @ ambient temp. 40°C/104°F........ -9 to 155°C/16 to 311°F
    RTC-250
    @ ambient temp. 0°C/32°F..............5 to 250°C/41 to 482°F
    @ ambient temp. 23°C/73°F..........28 to 250°C/82 to 482°F
    @ ambient temp. 40°C/104°F......45 to 250°C/113 to 482°F

    Accuracy (model B & C) with external STS ref. sensor
    RTC-158 B & C.......................................... ±0.04°C/±0.07°F
    RTC-250 B & C.......................................... ±0.07°C/±0.13°F
    12-month period. Relative to reference standard. Specs by use of the external STS-200 reference sensor. Excl. sensor drift.

    Accuracy with internal reference sensor
    RTC-158 A, B & C...................................... ±0.18°C/±0.32°F
    RTC-250 A, B & C...................................... ±0.28°C/±0.50°F

    Stability
    RTC-158................................................... ±0.01°C/±0.018°F
    RTC-250................................................... ±0.02°C/±0.036°F
    Measured after the stability indicator has been on for 15 minutes. Measuring time is 30 minutes.

    Radial homogeneity (difference between holes)
    RTC-158 @ -22°C/-8°F, Block........................0.03°C/0.05°F
    RTC-158 @ 155°C/311°F, Block.....................0.05°C/0.09°F
    RTC-158 @ range, Bath................................0.015°C/0.03°F

    RTC-250 @ range, Block.................................0.05°C/0.09°F
    RTC-250 @ range, Bath................................0.015°C/0.03°F

    Resolution (user-selectable)
    All temperatures .......................1° or 0.1° or 0.01° or 0.001˚

    Heating time
    RTC-158 -22 to 23°C/-8 to 73°F.................... 9 minutes
    23 to 100°C/73 to 212°F............... 23 minutes
    100 to 155°C/212 to 311°F........... 28 minutes

    RTC-250 28 to 100°C/82 to 212°F................. 3 minutes
    50 to 100°C/122 to 212°F............... 2 minutes
    100 to 250°C/212 to 482°F............. 9 minutes

    Cooling time
    RTC-158 155 to 100°C/311 to 212°F............. 9 minutes
    100 to 23°C/212 to 73°F............... 24 minutes
    23 to 0°C/73 to 32°F..................... 15 minutes
    0 to -15°C/32 to 5°F..................... 21 minutes

    RTC-250 250 to 100°C/482 to 212°F........... 27 minutes
    100 to 50°C/212 to 122°F............. 27 minutes
    50 to 28°C/122 to 82°F................. 28 minutes

    Time to stability (approx.)
    RTC-158.............................................................. 15 minutes
    RTC-250.............................................................. 15 minutes

    Immersion depth
    RTC-158/250 incl. insulation plug................. 180 mm/7.1 in
    RTC-158/250 bath version............................ 150 mm/5.9 in


    View the Data/Spec Sheet. Don't have Reader?
    View the RTC Series Manual.  
    Read About the DLC System.  
    View the DLC Manual.  
    Read About Temp Sensors.  

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