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Yamato Thermomate BF Series Immersion Thermostats

BF201-115V  BF201-220V / BF401-115V  BF401-220V

BF501-115V  BF501-220V / BF601-115V  BF601-220V


Multi-function immersion thermostatic device for various usage, with improved performance, operability and safety

Performance and functions

  • Four models including basic model with only fixed temperature operation and multi-function models with segment programming function, external output and external communication function
  • Water jet strength can be adjusted in 10 patterns
  • Temperature preset function enables memory and read out of temperature
  • BF601 can be used for water or oil
  • No protrusions, easy to set-up

Safety features

  • Self-diagnostic functions, circuit protector, water level detection sensor and buzzer alarm for errors
TypeBasicMulti-functionMulti-functionOil/water compatible
Temp. setting range-20~90°C*¹0~200°C
Temp. control rangeRT+5~80°C*²RT+5~180°C*³
Temp. control accuracy±0.05~0.1°C*⁴±0.02~0.5°C*⁴±0.02~0.5°C*⁴±0.05~0.2°C*⁴
StirringPropeller Water jet Water jet Propeller
HeaterStainless pipe heater
Temp. control systemPID control by microprocessor
Temp. settingDigital setting by ▲▼ keys
Temp. displayMeasured/target temp. display: green 4-digit LED digital display
Digital 7 segment display (Resolution: 0.1°C)
Target temperature display: orange 4-digit LED digital display
(Resolution: 0.1°C, 1°C for BF601)
Measured temperature display: green 4-digit LED digital display
(Resolution: 0.1°C, 1°C for BF601)
Timer---1min. to 99hrs.59min. and 100hrs. to 999hrs.
Timer resolution---1min. and 1hr.
Operation functionsFixed temperatureFixed temperature, Quick auto stop, Auto start, Repeat function
Program operation: 3 patterns 10 steps
Additional functionsTemperature presetting (10 pts)Temperature presetting (10 points), Calibration offset, Keypad lock, Auto resume
----External output terminal*⁶: temp. output, External alarm output, Time-up output, External communication--
Heater circuitTriac zero-cross type
SensorPlatinum resistance temperature detector (Pt100)
Safety deviceSelf-diagnostics function (power supply frequency error, controller failure detection, sensor failure detection, heater interruption detection, triac (SSR) short circuit detection, main relay contact failure, automatic overheat prevention, measured temperature error detection), Independent overheat prevention device (IOPD), Circuit protector, Float level detection
External dimension*⁸W140 x D138 x H312mm
Weight~7 kg
Clamp available thicknessUp to 35mm
Power source 50/60Hz
with external transformer
AC115V 9.6A
AC220V 5A
AC115V 11.3A
AC220V 5.9A
Included accessoryTesting bath model BY100 (Polypropylene)
List Price$ 1,780$ 2,260$ 2,260$ 2,400

*1. When using under room temperature +5°C, combine with low temperature water bath or neo cool dip BE series
*2. When using testing bath BY100
*3. When using testing bath BZ100D and silicon oil with viscosity 50cSt silicon oil. Water cannot be used at temperature above 80°C
*4. Setting temperature 37°C/80°C, using testing bath BY100
*5. Setting temperature 40°C/180°C, using testing bath BZ100D and silicon oil with viscosity 50cSt silicon oil.
*6. Output by one output terminal
*7. Protrusions excluded

Click on the links below to download the associated PDFs.

Bath Overview

BF Series Catalog

Lab Bath Buyer’s Guide

To download Operational Manual, visit our Technical Support Center

40 years as a leading scientific lab equipment provider in the United States.
All products come with a 1 year warranty.
Every product is made through environmentally conscious methods and remains eco-friendly all throughout its life cycle.