The MTC series of portable temperature calibrators from JF INSTRUMENTS makes it very easy to maintain correct readings for all your temperature monitoring devices. The dry-block design does not use any hazardous hot liquid, has a larger temperature range and heats up and cools down much faster than a traditional liquid bath. The MTC dry-block calibrators has been designed for much easier true temperature calibration in the field, leading to reliable results. The simple operation and the automatic functions have been carefully selected for ease of use. This has resulted in a fast, simple and efficient temperature calibrator without compromising quality. Reach 320°C (608°F) in just 4 minutes.
The MTC series features a large backlit display showing a lot of useful information at the same time: The set value and the true temperature, the status on the thermo switch test input, a count- down time before the temperature is stable and a big check mark when it is stable. To save time use the automatic switch test. The MTC series will find the open and close temperatures on a thermo switch and calculate the dead band. The MTC series also features an auto-step function. Using this function you may stay in the control room and monitor the temperature reading while the calibrator automatically steps through a number of pre-programmed temperatures located next to the sensor.
Specifications
FUNCTIONAL SPECIFICATIONS
Mains specifications Voltage MTC-140/320/650 A.115V(90-127) / 230V(180-254) Frequency, non US deliveries................50 Hz ±5, 60 Hz ±5 Frequency, US deliveries........................................60 Hz ±5 Power consumption (max.) MTC-140 A.....................150 VA Power consumption (max.) MTC-320 A / 650 A...... 1150 VA Temperature range MTC-140 A Maximum........................................................140°C / 284°F Minimum @ ambient temp. 0°C /32°F...........-30°C / -22°F Minimum @ ambient temp. 23°C / 73°F............. -17°C / -1°F Minimum @ ambient temp. 40°C / 104°F........... -2°C / 28°F MTC-320 A................................... 33 to 320°C / 91 to 608°F MTC-650 A..................................33 to 650°C / 91 to 1202°F Resolution (user-selectable) Selectable ............................................................................. 1° or 0.1°C/°F Stability MTC-140 A ..............................................±0.05°C / ±0.09°F MTC-320 A / 650 A.....................................±0.1°C / ±0.18°F Measured after the stability indicator has been on for 10 minutes. Measuring time is 30 minutes. Time to stability (approximate) MTC-140 A.................................................................. 5 min. MTC-320 A / 650 A..................................................... 8 min. Accuracy MTC-140 A.................................................... ±0.4°C /±0.7°F MTC-320 A...................................................±0.5°C / ±0.9°F MTC-650 A................................................... ±0.9°C / ±1.6°F Specification when using the internal reference. (Load 4 mm OD reference probe in the center of the insert). Immersion depth MTC-140 A (insulation included).................. 115 mm / 4.5 in MTC-320 A / 650A....................................... 110 mm / 4.3 in Heating time MTC-140 A -17 to 23°C / 1 to 73°F................3 minutes MTC-140 A 23 to 140°C / 73 to 284°F......... 15 minutes MTC-320 A 33 to 320°C / 91 to 608°F...........4 minutes MTC-650 A 33 to 650°C / 91 to 1202°F....... 10 minutes Cooling time MTC-140 A 100 to 0°C / 212 to 32°F........... 10 minutes MTC-140 A 0 to -15°C / 32 to 5°F................ 13 minutes MTC-140 A 140 to 100°C / 284 to 212°F........2 minutes MTC-320 A 320 to 100°C / 608 to 212°F..... 16 minutes MTC-650 A 650 to 100°C / 1202 to 212°F...28 minutes Switch input (dry contact) Test voltage ..............................................Maximum 5 VDC Test current ..............................................Maximum 2.5 mA
KEY FEATURES
Automatic switch test Finds switching temp. ......................Open, close, hysteresis Slope rate, programable ..............................0.1 to 9.9 °C/°F Auto stepping Programmable..................................................Up to 9 steps Dwell time on each step................................ Programmable Enhanced stability Unstable mains protection............................... MVI Circuitry Stability indication.......................................... Yes, in display Multi-information display Stability indicator......................................... Bold checkmark Countdown timer before stable..............................4 minutes Temperature........................SET and READ simultaneously Alphanumeric messages................................................. Yes Calibration status icons................................................... Yes Training mode (heating/cooling block disabled) Simulation of all functions............................................... Yes Simulating heating and cooling...... Approx. 100° per minute Service facilities Adjustment of the unit from the keypad.......................... Yes Self explanatory guide in display.................................... Yes Other information: Displays serial number, software revision level, and last calibration date Setup facilities Stability criteria............Extra time before ’’stable indication’’ ............................................................................... is shown Display resolution............................................ 0.1° or 1°C/°F Temperature units................................................. °C and °F Slope rate.................................................. 0.1 to 9.9°/minute Maximum temperature......................Any value within range Type approval certifcate All JF Instruments calibrators are type approved by Det Norske Veritas. Find the certificate at our web-page www. jofra.com DNV Marine Approval, Certificate no.:.....................A-10549
PHYSICAL SPECIFICATIONS
Instrument dimensions L x W x H:...............241 x 139 x 325 mm / 9.5 x 5.5 x 12.8 in Instrument weight MTC-140 A.....................................................6.5 kg / 14.3 lb MTC-320 A........................................................... 5 kg / 11 lb MTC-650 A..................................................... 6.4 kg / 14.1 lb Insert dimensions MTC-140 A Diameter x length............... 19 mm x 100 mm / 0.75 x 3.9 in MTC-320 A, MTC-650 A Diameter x length..................... 26 mm x 120 mm / 1 x 4.7 in Weight of non-drilled insert (approximate) MTC-140 A.........................................................2.6 oz / 75 g MTC-320 A.......................................................5.8 oz / 170 g MTC-650 A..................................................... 17.8 oz / 510 g 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. Shipping (with std. accessories + carrying case) Weight: MTC-140 A...................................... 12.5 kg / 27.6 lb Weight: MTC-320 A............................................ 11 kg / 24 lb Weight: MTC-650 A...........................................12 kg / 27 lb Size: L x W x H...... 507 x 232 x 415 mm /19.9 x 9.1 x 16.3 in Shipping (with std. accessories but no carrying case) Weight: MTC-140 A............................................10 kg / 22 lb Weight: MTC-320 A........................................... 8 kg / 17.5 lb Weight: MTC-650 A..........................................9.5 kg / 21 lb Size: L x W x H.....465 x 255 x 470 mm / 16.4 x 9.8 x 14.6 in Shipping (carrying case only) Weight: ............................................................ 5.0 kg / 11 lb Size: L x W x H..... 507 x 232 x 415 mm / 19.9 x 9.1 x 16.3 in Miscellaneous Serial data interface ............................. RS232 (9-pin Male) Operating temperature......................0 to 40°C / 32 to 104°F Storage temperature.......................-20 to 50oC / -4 to 122oF Humidity............................................................0 to 90% RH Protection class ............................................................ IP-10 CE Conformity..........EN61326 : 1997/A1:1998 / corr. (2000) ...................................................EN61010-1 : 1993/A2:1995
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