JOFRA ATC SERIES DRY-BLOCK CALIBRATORS
A complete precision on-site test laboratory
 

     
     

A dvanced
T emperature
C alibrator

The JOFRA ATC series combines the accuracy of a laboratory calibrator with the speed and portability of a dry-block calibrator. The series features the new dual-zone heating/cooling block to ensure the thermal performance in the calibration zone independent of the load.
  • All units with dual-zone heating block
  • New super-cooling model (ATC-157)
  • Universal input for sensor-under-test
  • Input for external reference probe
  • Automatic switch test
  • RS 232 and AmeCal calibration software
  • Multi information display + numeric keyboard
  • Autostepping
  • Stability indicator
  • Count-down timer (shows when unit is stable)
  • Automatic, stand-alone calibration system
  • Up- and download of work orders (calibrations)
  • MVI Mains Variance Immunity
< B>
  atc-S-B.jpg(9375Bytes)
Click to enlarge

 
 
Model and temperature range
ATC-156..........-24 to 155°C (-11 to 311°F) <-- New dual-zone cooler
ATC-157..........-45 to 155°C (-49 to 311°F) <-- New dual-zone super-cooler
ATC-320..........33 to 320°C (122 to 1202°F)
ATC-650..........33 to 650°C (122 to 1202°F)
 

     
     

  State-of-the-art well design - Optimized for accuracy
The ATC series employs the newest technology in dry-block design. The active dual-zone design ensures excellent temperature homogeneity in the calibration zone of the block independent of the load (sensor-under-test). The insert is so big that there is room for both the sensor-under-test and the external reference probe.
More about the dual-zone active block

     
     

  External reference input
All 'B' models feature a four-wire true-ohm-measurement RTD input for an external reference temperature probe. The new JOFRA STS-100 series of reference probes contains an angled probe. This probe leaves room for the connection head of the sensor-under-test.

Sensor-under-test input
All 'B' models also feature a universal input for electrical connection of the sensor-under-test. RTD, TC, TX, thermo switch, and V. Convert the input to temperature and read the results in the big LCD display.

     
     
    Switch test - Save time using the fully automatic test of thermo switches. The calibrator will find the closing and the opening temperatures and calculate the hysteresis. This leaves you free to concentrate on other things while the test is running.


     
     

  Auto step - The calibrator will automatically change to the next programmed value. This allows the calibrator to be placed anywhere in the process while you monitor the output from the sensor-under-test in the control room.

     
     

  Automatic stand-alone calibration - Download your calibration tasks (work orders) to the ATC calibrator and run the test in the field. Return to your base and upload the calibration results including both as-found and as-left results.

     
     

  MVI circuitry - The MVI technology removes the stability problem caused by an unstable mains supply. This is very often a problem in production environments with large electric motors, heating elements, etc. cycling on and off. The MVI gives correct and safe calibrations.

More about MVI circuitry

     
     

  Stability indicator - Clear audio and visual indication in the display when the calibrator is stable.
Checking both the sensor-under-test, the reference probe, and the calibrator.

     
     

  Simplified calibration documentation - All ATC series calibrators are delivered with an RS-232 serial interface and the AMECAL-TEMPERATURE software. This WINDOWS®-based software allows the user to customize calibration routines. Download these routines and upload the calibration results for storing or print-out of calibration certificates.

More about AMECAL TEMPERATURE

     
     

  JOFRA ATC-156 - Offers calibration of short 'Clamp' sensors
JOFRA offers a complete, highly accurate, and portable calibration-solution. The kit is designed around an ATC-156 dry-block calibrator which features the dual-zone technology. Customized inserts and a reference sensor have been developed specifically for this application. Avoid cumbersome and lengthy liquid bath calibrations and the performance issues associated with older dry-block calibrators.
Key specifications:
 

Spec's at 23°C (73°F) ambient

ATC-156

ATC-157

ATC-320

ATC-650

Dual-zone Heating block

Yes

Yes

Yes

Yes

Min. temp.

-24°C
(-11°F)

-45°C
(-49°F)

33°C
(91°F)

33°C
(91°F)

Max. temp.

155°C
(°311F)

155°C
(°311F)

320°C
(608°F)

650°C
(1202 F)

Accuracy A model

0.19°C
(0.34°F)

0.19°C
(0.34°F)

0.26°C
(0.47°F)

0.39°C
(0.7°F)

Accuracy B model

0.04°C
(0.07°F)

0.04°C
(0.07°F)

0.07°C
(0.13°F)

0.11°C
(0.2°F)

Stability

0.02°C
(0.04°F)

0.02°C
(0.04°F)

0.02°C
(0.04°F)

0.03°C
(0.06°F)

Immersion depth

160 mm
(6.3 in)

160 mm
(6.3 in)

150 mm
(5.91 in)

150 mm
(5.91 in)

Insert diameter

30 mm
(1.18 in)

20 mm
(0.79 in)

30 mm
(1.18 in)

30 mm
(1.18 in)

 

 
 
 

 
PRODUCT INFORMATION (Specification sheets)
You need the 'Acrobat Reader' to read PDF documents. Use this link to download the Adobe Acrobat Reader .
 

     
     
Specification sheet in US-English
  JOFRA ATC Series - - - - Dry-block - - - - Specification sheet in English
Publication: SS-CP-2285-US Size: 571 Kb, 12 pages
     
     
Specification sheet in German
  JOFRA ATC Series - - - - Dry-block - - - - Specification sheet in German
Publication: SS-CP-2285-DE Size: 671 Kb, 12 pages
 
 
 

     
     

  Reference Manual JOFRA ATC-155/156/157/320/650 A/B
Publication: 105446 02, size: 1.704 Kb
     
     

  User Manual JOFRA ATC-155/156/157/320/650 A/B
Publication: 105447 02, size: 11.744 Kb
 

Phone: 813-971-5001
Fax : 813-971-5117

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Omni Controls Inc.
5309 Technology Dr.
Tampa, FL 33647

Email: sales@omnicontrols.com

Phone: 800-783-6664
Fax: 813-971-5117