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Yamato SI-401 Natural Convection Dry Sterilizer, 77L, Programmable PID Control

UsedYamato ScientificHeating & coolingUnited States

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Circulation Method
Natural convection dry laboratory sterilizers
Operating Temp. Range*
Room temp. +5~260°C
Temp. Adjustment Accuracy
2°C (at 260°C)
Temp. Distribution Accuracy
20°C (at 260°C)
Max. Temp. Reaching Time
~70min.
All 26 specifications
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Specifications 26

Brands
Yamato Scientific
New/Used
Used
Circulation Method
Natural convection dry laboratory sterilizers
Operating Temp. Range*
Room temp. +5~260°C
Temp. Adjustment Accuracy
2°C (at 260°C)
Temp. Distribution Accuracy
20°C (at 260°C)
Max. Temp. Reaching Time
~70min.
Interior / Exterior
Stainless steel / Chrome free electrogalvanized carbon steel sheet coated with chemical-proof baked-on finish
Heater
Iron chromium wire heater / 1.2kW
Sensor
K type Thermocouple
Exhaust Port
I.D.30 mm x 2 (top)
Temp. Controller
PID control
Temp. Display
Measured temp. display: green 4 digit LED digital display / Setting temp. display: red 4 digit LED digital display
Timer
1 min~99hr 59 min and 100~999 hrs 30 min. (with timer wait function)
Operation Function
Fixed temperature, quick auto stop, auto stop, auto start, program (6 pattern: 30 steps x 1, 15 steps x 2, 10 steps x 3, pattern repeat function)
Additional Functions
Lock function, auto recovery after power failure, calibration off-set
Safety Device
Self diagnostic functions (temp. sensor failure, heater disconnection, SSR short circuit, memory error, internal communication error, measurement temperature error, automatic overheat prevention), overheat prevention device, earth leakage breaker
Internal Dimensions WxDxH
450 x 430 x 400 mm
External Dimensions WxDxH
550 x 540 x 777 mm
Internal Capacity
77L
Shelf Plate With Standard Load
~15 kg/pc.
Shelf Rest Step Number / Pitch
10 steps / 30 mm
Power Source (50/60Hz)
AC115V 10.6A (with plug)
Weight
~42 kg
Shelf Plate Material
Stainless punching metal
Shelf Plate / Bracket
2pcs./4pcs. (bottom one is screwed)

Product description

77L programmable natural convection dry sterilizer with PID control, 5–260°C range, digital display, and safety features.

Yamato SI-401 Natural Convection Dry Sterilizer

  • Circulation Method: Natural convection
  • Operating Temperature Range: Room temp. +5 to 260°C
  • Temperature Adjustment Accuracy: ±2°C at 260°C
  • Temperature Distribution Accuracy: ±20°C at 260°C
  • Max Temperature Reaching Time: Approximately 70 minutes
  • Construction: Interior stainless steel; exterior chrome-free electrogalvanized carbon steel with chemical-proof baked finish
  • Heater: Iron chromium wire, 1.2 kW
  • Sensor: Type K thermocouple
  • Exhaust Ports: Two ports (I.D. 30 mm) on top
  • Temperature Controller: PID control with digital display (green measured temp., red set temp.)
  • Timer: Ranges from 1 min to 999 hours 30 min, with timer wait function
  • Programming: Up to 30 steps, 6 patterns; fixed temperature, quick auto stop, auto stop, auto start, repeat operation
  • Additional Functions: Calibration offset, lock function, power failure auto recovery
  • Safety Devices: Self-diagnostic functions, earth leakage breaker, overheat prevention device, protection against sensor failure, heater faults, SSR short circuit, memory and communication errors
  • Internal Dimensions (WxDxH): 450 x 430 x 400 mm
  • External Dimensions (WxDxH): 550 x 540 x 777 mm
  • Internal Volume: 77 liters
  • Shelf Capacity: Approximately 15 kg per shelf plate
  • Shelf Rest Steps/Pitch: 10 steps / 30 mm
  • Shelf Plate Material: Stainless punched metal
  • Shelf Plates / Brackets Included: 2 shelf plates and 4 brackets (bottom shelf screwed)
  • Power Source: AC 115 V, 10.6 A with plug
  • Weight: Approx. 42 kg

Key features include a programmable PID temperature controller, comprehensive safety systems, digital operation with multiple timer and program options, and robust stainless steel construction suitable for laboratory dry sterilization applications.

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Frequently asked questions

How long does laboratory equipment typically last?

With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.

Can I get service for older equipment?

Yes. Every verified supplier states which service partners cover the instrument, and we list that alongside the offer.

Where can I buy parts?

Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.

What is the typical lead time for refurbished equipment?

Two to six weeks, depending on refurbishment scope and whether calibration is included.

Does laboratory equipment ship internationally?

We ship to 38 countries. Crating and customs handling are quoted with the instrument.

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Last updated 19 October 2026