Natural Convection Oven
JSON-Series Natural (Gravity) Convection Ovens heat up chamber by mild gravity air convection with heating element located on the chamber bottom. Ideal for drying fine powders, general and conventional laboratory drying applications.
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json-xxx-eng.pdf |
Common Specifications
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Heating System |
Gravity Air Convection |
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Temp. Range |
ambient + 10 oC ~ 250 oC |
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Accuracy |
± 0.3 oC at 120 oC (JSON-050) |
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Uniformity |
± 2.0 oC at 120 oC (JSON-050) |
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Controller |
Microprocessor PID Control Auto START / STOP Timer |
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3-Zone Temperature Control Algorithm |
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3-Point Temperature Calibration |
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1-Point Temperature Offset Calibration |
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Sensor |
Class A Pt-100 Ω Sensor |
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Safety |
Over-Temperature Cut-Off |
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Over Current Cut-Off |
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Material |
Body - Epoxy Powder Coated Steel |
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Chamber – Stainless Steel 304 |
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Insulation – 50mm thick woven mineral wool |
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including stainless steel wire shelf |
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optional perforated stainless steel shelf |
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Electrical Data |
220±10% VAC 50/60Hz 1-Phase |
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Plug config. |
CEE 7/7 Schuko or BS 1363 |
Features
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Complete temperature range is divided into three zones (LOW/MIDDLE/HIGH) and each ZONE has its individual PID Algorithm to provides precise and superior temperature control characteristic of whole temperature range. |
An excellent calibration tool to calibrate chamber at THREE DIFFERENT TEMPEATURE POINTS to adjust multiple TEMPERTURE BIAS to increase temperature accuracy of whole temperature range. |
Provides simple and easy calibration tool to calibrate chamber at ONE SPECIFIC TEMPERTURE POINT of frequent use.
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Performance |
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- Control Temperature Range from ambient+10 oC to 250 oC - Natural (Gravity) air convection for drying applications of fine powder and/or glassware - Asymmetrically designed heating system enhances mild and uniform hot air circulation for better temperature uniformity - 50mm thick high thermal efficiency mineral wool with woven aluminum barrier sheet saves energy and less dust
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Controller |
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- DIGITAL MICROPROCESSOR PID TEMPERATURE CONTROLLER Integrated Digital Microprocessor Control System - GRAPHIC LCD DISPLAY Back Light Graphic LCD Display provides user-friendly operating information - UV COATED POLYCARBONATE TOUCH PANEL Equipped with Capacitive LED Lighting Touch Button provides sensitive touching operation and durability - ENCODER TYPE JOG DIAL Push to Start and Stop, Rotary turn to change values provides easy and simple user interface - 0.1 oC CONTROL RESOLUTION - TURN-ON TIMER up to 99 hour 59 min and alarm - TURN-OFF DELAY TIMER up to 99 hour 59 min and alarm - Temperature and Timer Memory Function in frequent use - 3-ZONE PID ALGORITHM - 3-POINT CALIBRATION / 1-POINT OFFSET CALIBRATION - POWER and TIMER RESTORE FUNCTION in case electric power outage - CLASS A PT-100 Ω Sensor - RS-232C PC COMMUNICATION INTERFACE [OPTION]
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Construction |
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- Durable epoxy powder coated metallic casing - Corrosion resistant Stainless Steel 304 chamber - Double layered glass window for easy observation of samples - Ventilation damper
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Convenience |
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- Double layered tempered safety glass window for easy observation of samples - Removable and height adjustable shelf by 25mm spacing - Easy-to-open and air-tight one touch door latch - Opening size adjustable ventilation damper - Door switch cut-off heater and blower to protect user from exposure to hot air
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Safety |
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- DOOR SENSOR WITH DOOR OPEN AUDIO VISUAL ALARM - MAXIMUM TEMPERATURE LIMIT SETTING, CUT-OFF HEATER AND AUDIO VISUAL ALARM - DUAL OVER TEMPERATURE CUT-OFF BY CONTROLLER AND INDEPENDENT THERMOSTAT Controller Program cut-off heater and AUDIO VISUAL ALARM in case +10 oC above set temperature Independent analog thermostat cut-off heater 10% above set temperature - HIGH TEMPERATURE CUT-OFF AND AUDIO VISUAL ALARM - LOW TEMPERATURE CUT-OFF AND AUDIO VISUAL ALARM - PT SENSOR SHORT OR DISCONNECTION AUDIO VISUAL ALARM - OVER CURRENT CUT-OFF : Electrical Leakage Breaker
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| Controller | Cabinet Stand [OPTION] | Door window | ||
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| Chamber | Adjustable Shelf | Safety | ||
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Models
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Art. No. |
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Dimension Data |
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Chamber Volume |
48 Liters |
100 Liters |
151 Liters |
252 Liters |
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Inner Dims. (W x D x H mm) |
400 x 300 x 400 |
500 x 400 x 500 |
560 x 450 x 600 |
600 x 600 x 700 |
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Outer Dims. (W x D x H mm) |
560 x 525 x 710 |
660 x 625 x 810 |
720 x 675 x 910 |
760 x 825 x 1010 |
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Window Dims. (W x H mm) |
150 x 290 |
150 x 360 |
150 x 410 |
150 x 460 |
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No. of Shelf Positions |
12 ea |
16 ea |
20 ea |
24 ea |
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No. of Shelf included |
2 ea |
2 ea |
2 ea |
3 ea |
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No. of Ventilation Damper |
1 ea |
1 ea |
1 ea |
1 ea |
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Performance Data |
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Heating System |
Natural (Gravity) Air Convection |
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Temp. Range |
Amb. +10 oC ~ +250 oC |
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Accuracy at 120 oC |
±0.3 oC |
±0.3 oC |
±0.5 oC |
±0.5 oC |
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Uniformity at 120 oC |
±2.0 oC |
±3.0 oC |
±3.0 oC |
±4.0 oC |
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Heat up time to 120 oC |
10 min. |
10 min. |
15 min. |
20 min. |
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Electrical Data |
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Rated voltage |
230 ± 10% VAC |
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Power frequency |
50 / 60Hz |
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Heater Output |
1.2 kW |
1.5 kW |
1.7 kW |
2.5 kW |
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Nominal power |
1.3 kW 5.5 amp |
1.6 kW 6.8 amp |
1.8 kW 7.7 amp |
2.6 kW 11.3 amp |
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Phase |
1 Phase |
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Plug configuration |
CEE 7/7 Schuko or BS 1363 |
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Ordering Information
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Art. No. |
Descriptions |
Voltage |
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JSON-050 |
Natural Convection Oven, 48 L including standard accessories 2 ea x Wire Shelf, Stainless Steel 304 8 ea x Shelf Support 1 ea x Instruction Manual 1 ea x Warranty Certificate |
230 VAC 1~ ph 50/60Hz |
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JSON-100 |
Natural Convection Oven, 100 L including standard accessories 2 ea x Wire Shelf, Stainless Steel 304 8 ea x Shelf Support 1 ea x Instruction Manual 1 ea x Warranty Certificate |
230 VAC 1~ ph 50/60Hz |
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JSON-150 |
Natural Convection Oven, 151 L including standard accessories 2 ea x Wire Shelf, Stainless Steel 304 8 ea x Shelf Support 1 ea x Instruction Manual 1 ea x Warranty Certificate |
230 VAC 1~ ph 50/60Hz |
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JSON-250 |
Natural Convection Oven, 252 L including standard accessories 3 ea x Wire Shelf, Stainless Steel 304 12 ea x Shelf Support 1 ea x Instruction Manual 1 ea x Warranty Certificate |
230 VAC 1~ ph 50/60Hz |
Optional Accessories
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Art No. |
Perforated Shelf, Stainless Steel 304 |
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PHS-A03 |
for JSON-050 W370 x D280 mm |
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PHS-A05 |
for JSON-100 W470 x D380 mm |
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PHS-A07 |
for JSON-150 W530 x D430 mm |
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PHS-A09 |
for JSON-250 W570 x D580 mm |
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Art No. |
Wire Shelf, Stainless Steel 304 |
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PHS-B03 |
for JSON-050 W370 x D280 mm |
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PHS-B05 |
for JSON-100 W470 x D380 mm |
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PHS-B07 |
for JSON-150 W530 x D430 mm |
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PHS-B09 |
for JSON-250 W570 x D580 mm |
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PHS-A99 |
Shelf Support, Set of 4 |
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Art No. |
Cabinet Stand with Caster |
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PHC-050 |
for JSON-050 |
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PHC-100 |
for JSON-100 |
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PHC-150 |
for JSON-150 |
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PHC-250 |
for JSON-250 |
