Yamato DN Series Inert Gas Ovens

Inert ovens suitable for temperature test and heat treatment under a low oxygen atmosphere, by introducing N₂ gas into the chamber

Model
- DN412I
- DN612I

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DN412I/612I

Performance and functions

Heat resistance test and heat treatment of up to 360°C
Simple operation via interactive key input
Standard equipped with various operation modes such as program operation and calibration offset function, power failure recovery mode selection, and user configuration information saving
Repeatable operation with up to 99 steps and 99 patterns, with a repeat function
N₂ gas flow amount controllable

Safety features

Enhanced safety features include self-diagnostic functions, a digital-setting independent overheating prevention device, and an electric leakage breaker
If the door is opened during operation, the fan and heater turn off via the door switch.

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All products come with a 1 year warranty.

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Model	DN412I	DN612I
System	Forced Convection
Operating Temp. Range	Room Temp. +15 to 360°C
Temp. fluctuation	±0.6°C (at 360°C)	±1.0°C (at 360°C)
Temp. gradient	12°C (at 360°C)	20°C (at 360°C)
Temp. rising rate	6.6°C/min.	5.5°C/min.
Temp. rising time	~45 min.	~80 min.
Nitrogen substitution time	~30 min. (Room temp., oxygen concentration inside: 0.5%)	~60 min. (Room temp., oxygen concentration inside: 0.5%)
Interior	Stainless steel plate
Exterior	Chromium-free electrogalvanized steel sheet baked coating
Heat insulator	Glass wool + Ceramic fiber
Heater	SUS Pipe Heater 3.0kW	SUS Pipe Heater 4.0kW
Sensor	K thermocouple for temperature control and independent overload prevention device
Fan type / Motor	Sirocco fan / Capacitor type motor
Flow monitor/N₂ gas inlet	Maximum flow 30L/min, O.D. 9mm hose nipple
Door	Solid door, single swing (left opening)
Controller type	V type controller
Temp. control method	PID Control by Microcomputer
Temp. display type	Temp. display: Digital display by 4 digit green LED (resolution:1°C) Set temp. display: Digital display by 5 digit orange LED (resolution:1°C)
Timer operation	0 min to 99 hours 59 min (Timer resolution: 1 min)
Operation function	Fixed temp. operation, Auto-start, Auto-stop, Quick auto-stop, Program Operation (max. 99 steps, up to 99 patterns, repeat operation function)
Additional functions	Power on/operation time accumulation function (up to 65535 hours), Calendar timer (24 hours), Calibration offset, Power failure recovery mode selection, User setting information save/Call-up, monitor display of power consumption, CO2 emissions, and heater operation amount
Heater circuit control	Triac zero-cross method
Safety device	Self diagnostic functions (Sensor failure, SSR short circuit, Heater line disconnection, Main Relay error, RAM error, EEPROM error) Automatic overheat prevention, Key lock function, Independent overheating prevention, Electric leakage breaker, Door switch
Internal dimensions	W470 x D450 x H450 mm	W620 x D600 x H600 mm
External dimensions	W640 x D695 x H915 mm	W790 x D845 x H1065 mm
Internal capacity	95L	223L
Shelf load capacity	~30kg / shelf, total load capacity 60kg
Shelf support levels / pitch	12 levels / 30mm	17 levels / 30mm
Power source	Single phase 220V 14.5A (no plug, round terminal)	Single phase 220V 19A (no plug, round terminal)
Weight	~90kg	~130kg
Weight	Stainless wire shelf plate / bracket: 2 pcs. / 4 pcs.

Model	DN412I	DN612I
System	Forced Convection
Operating Temp. Range	Room Temp. +15 to 360°C
Temp. fluctuation	±0.6°C (at 360°C)	±1.0°C (at 360°C)
Temp. gradient	12°C (at 360°C)	20°C (at 360°C)
Temp. rising rate	6.6°C/min.	5.5°C/min.
Temp. rising time	~45 min.	~80 min.
Nitrogen substitution time	~30 min. (Room temp., oxygen concentration inside: 0.5%)	~60 min. (Room temp., oxygen concentration inside: 0.5%)
Interior	Stainless steel plate
Exterior	Chromium-free electrogalvanized steel sheet baked coating
Heat insulator	Glass wool + Ceramic fiber
Heater	SUS Pipe Heater 3.0kW	SUS Pipe Heater 4.0kW
Sensor	K thermocouple for temperature control and independent overload prevention device
Fan type / Motor	Sirocco fan / Capacitor type motor
Flow monitor/N₂ gas inlet	Maximum flow 30L/min, O.D. 9mm hose nipple
Door	Solid door, single swing (left opening)
Controller type	V type controller
Temp. control method	PID Control by Microcomputer
Temp. display type	Temp. display: Digital display by 4 digit green LED (resolution:1°C) Set temp. display: Digital display by 5 digit orange LED (resolution:1°C)
Timer operation	0 min to 99 hours 59 min (Timer resolution: 1 min)
Operation function	Fixed temp. operation, Auto-start, Auto-stop, Quick auto-stop, Program Operation (max. 99 steps, up to 99 patterns, repeat operation function)
Additional functions	Power on/operation time accumulation function (up to 65535 hours), Calendar timer (24 hours), Calibration offset, Power failure recovery mode selection, User setting information save/Call-up, monitor display of power consumption, CO2 emissions, and heater operation amount
Heater circuit control	Triac zero-cross method
Safety device	Self diagnostic functions (Sensor failure, SSR short circuit, Heater line disconnection, Main Relay error, RAM error, EEPROM error) Automatic overheat prevention, Key lock function, Independent overheating prevention, Electric leakage breaker, Door switch
Internal dimensions	W470 x D450 x H450 mm	W620 x D600 x H600 mm
External dimensions	W640 x D695 x H915 mm	W790 x D845 x H1065 mm
Internal capacity	95L	223L
Shelf load capacity	~30kg / shelf, total load capacity 60kg
Shelf support levels / pitch	12 levels / 30mm	17 levels / 30mm
Power source	Single phase 220V 14.5A (no plug, round terminal)	Single phase 220V 19A (no plug, round terminal)
Weight	~90kg	~130kg
Weight	Stainless wire shelf plate / bracket: 2 pcs. / 4 pcs.

Click on the links below to download the associated PDFs.

DN Series Catalog

Oven Overview

Oven Accessories

Lab Ovens Buyer's Guide

To download Operational Manual, visit our Technical Support Center