LENTON WHT - High Temperature Ovens - 400°C, 500°C & 600°C

The outer cases are fabricated from corrosion resistant zinc coated mild steel and finished in two tone hard wearing stoved epoxy/polyester coating. The inner chamber is constructed from polished stainless steel which provides resistance to chemical attack and allows easy cleaning after use. All units are provided with stainless steel shelves with multi-position settings for convenient loading and unloading. Maintenance free heating elements and fan motor are fitted. Low thermal mass insulation materials are used throughout in order to achieve rapid heating and to allow efficient energy utilisation. The heavy duty fan ensures optimum temperature uniformity throughout the work chamber. Double skin construction provides a cool safe outer case. A variety of control options is available. A stand and trolley are available to convert bench mounted ovens into floor standing models.

Model	400°C  500°C 600°C	WHT 4/30 WHT 5/30 WHT 6/30	WHT 4/60 WHT 5/60 WHT 6/60	WHT 4/120 WHT 5/120 WHT 6/120
Chamber dimensions  (mm - h x w x d)		300 x 300 x 305	400 x 400 x 405	650 x 480 x 405
External dimensions (mm - h x w x d)		570 x 830 x 570	670 x 930 x 670	920 x 1030 x 670
Usable volume (l)		30	60	120
Heat up time (minutes) at 240V	400°C 500°C 600°C	50 75 120	50 75 120	50 75 120
Recovery time (minutes) at 240V	400°C 500°C 600°C	10 16 20	10 16 20	10 16 20
Temperature stability with PID control		+0.5°C	+0.5°C	+0.5°C
Temperature uniformity at 250°C		+5.0°C	+5.0°C	+5.0°C
Power (kW)	400°C 500°C 600°C	1.0 2.0 2.0	1.5 2.25 2.25	2.25 3.0 3.0
No of shelves supplied		2	2	2
Weight (kg)		73	99	179

LENTON Laboratory Ovens - Welland range - 300°C

A modern range of ovens, with a maximum operating temperature of 300°C, providing a combination of excellent performance and reliability. Increased power and low thermal mass encased fibre insulation ensure both fast heat up times and reduced recovery times.  Reduced holding power once at set temperature, together with the insulation, makes the range economical. Cool safe outer case temperature. Both gravity and forced air circulation models are available with a wide choice of control options, allowing the most critical performance criteria to be met. Where processes involve the liberation of flammable vapours, a stoving and curing option is available and for processes involving large amounts of water, a moisture extraction option is available.

	Ovens without fans				Ovens with fans
Model	WN 30	WN 60	WN 120	WN 200	WF 30	WF 60	WF 120	WF 200
Maximum temperature (°C)	300	300	300	300	300	300	300	300
Chamber dimensions  (mm - h / w / d)	250 330 320	350 392 420	450 492 520	700 590 520	300 292 320	400 392 420	500 492 520	750 792 520
External dimensions (mm - h / w / d)	470 655 470	570 765 570	670 865 670	920 965 670	470 665 470	570 765 570	670 865 670	920 965 670
Chamber capacity (l)	27	58	115	215	28	66	128	230
Weight (kg)	30	45	60	75	30	45	60	75
ShelvesNumber supplied Maximum possible Maximum load / shelf (kg) Maximum load (kg)	2 3 10 20	2 5 10 20	2 9 10 40	2 15 10 50	2 3 10 20	2 5 10 30	2 9 10 40	2 15 10 50
Power rating at 240V (watts)	750	1000	1500	2250	1000	1500	200	2700
Holding power at maximum temperature  (watts)	300	480	720	1160	350	600	800	1250
Temperature uniformity (at maximum temperature as a %)	+2.3	+2.3	+2.7	+3.5	+1.0	+1.0	+1.0	+1.0
Temperature stability with PID control (°C)	+0.5	+0.5	+0.5	+0.5	+0.2	+0.2	+0.2	+0.2
Heat up time (minutes) 240V to:                  100°C                                                                             200°C                                                                             300°C	12 26 52	12 26 52	12 26 52	14 29 58	4.5 12 25	4.5 12 25	4.5 12 25	5.5 14 30
Recovery time (minutes) with door              100°C open for 60 seconds to:                                  200°C                                                                              300°C	2.5 5 8.5	2.5 5 8.5	2.5 5 8.5	3 6 10	1 2.5 4	1 2.5 4	1 2.5 4	1.5 3 5
Air exchanges (volume - l / hr at 100°C) - with standard fan - with exhaust fan	N/A N/A	N/A N/A	N/A N/A	N/A N/A	1400 10,000	1400 10,000	1400 10,000	1400 10,000
Air exchanges / hour - with standard fan - with optional exhaust fan	N/A N/A	N/A N/A	N/A N/A	N/A N/A	50 360	21 153	11 79	6 44