SINCE 1889 Yamato Scientific Co.,Ltd.
Constant Temperature Immersion Type Controller "Thermomate"

 BF200/400/500/600 have been discontinued.

200 400 500 600
Operating temp. range
Room Temp. +5deg.C to 80deg.C Room TeRoom Temp. +5deg.C to 80deg.Cmp

PDF Catalog
  • Immersion Type Water Bath’s Temp. Controller.
  • Various Functions from "Fixed Temp. Operation" to "Programmable Operation".
  • Data Output, External Communication, etc. are available as Option.

Type Basic Type Multi Function Type Oil/Water Compatible Type
Model BF200 BF400 BF500 BF600
Temp. Setting Range -20.0 to 100deg.C 0 to 200deg.C
Operating Temp. Range Room Temp. +5 to 80deg.C Room Temp. +5 to 180deg.C*1
Temp. Control Accuracy ±0.05 to 0.1deg.C ±0.02 to 0.05deg.C ±0.05 to 0.2deg.C*1(*1 Condition: Setting Temp. 100deg.C, Testing Bath BZ100D, Silicon Oil Stickiness 50cst)
Stirrer Propeller Stirring Water Jet Stirring Propeller Stirring
Heater Stainless Pipe Heater
1.0kW 1.2kW
Temp. Control System PID Control by Micro Computer
Temp. Setting Digital Setting by Key
Temp. Display Digital Display by Green LED
Min. Digit Indication: 0.1deg.C Min. Digit Indication: 1deg.C
Setting Temp./ Measured Temp. Changeable Indicated on Main Indicator(Sub-indicator: Indicate Setting Temp.)
Timer Nil 1min. to 99h.59min. or 100h. to 999h.
Timer Resolution Nil 1min. or 1h.
Operating Function Fixed Operation Fixed Operation: Continuous Operation by Set Temp., Quick Automatic StopProgramming Operation: 1 to 3 Optional Pattern, Max. 5 Segment Pattern (Repeating, Gradient Operation)
Additional Function Temp. Pre-setting(Memory/Recall 1Temp.) Temp. Pre-setting (Memory/Recall 10 Temp.)Timer Function (to 49,999h.), Key Lock Function, Water Jet Strength Changeable Function (10 steps Changeable)
N/A Pump Jet Angle Changeable N/A
N/A N/A Temp. Output (10mV/deg.C),External Alarm Output,Time –up Output, External Communication Function (RS422A) N/A
Heater Circuit Control Triac Zero-cross Type
Sensor Thermister Pt Sensor
Safety Device
Safety Countermeasure Shelf Diagnosis Function (Automatic Overheat Prevention, Abnormal Temp. Sensor,Heater Wire Broken*2, Triac Short Circuit*2, Main Relay Defect*2), Circuit Protector, Float Type Empty Boiling Preventor, Buzzer Alarm for Abnormal Condition (*2: This Function is Not Applicable for BF200)
Accessories Testing Bath Model BY100 (Polypropylene)
External Dimension W140 x D138 x H305mm
Clamp Available Thickness Max. 35mm
Power Source AC 100V 50/60Hz 11A AC100V 50/60Hz 13A
Weight Approx. 7kg

Control panel
Control Panel BF400/500

Water Jet Stirring *Function Chart
BF200/400/500/600 Water Jet Stirring
Model BF200 BF400 BF500 BF600
Digital Setting/Display * * * *
Temp. Pre-setting * * * *
Programming Function - * * *
Water Jet Strength Changeable Function - * * -
Propeller Stirring * - - *
External Output, Communication Function, etc. - - * -
Oil Temp. Control - - - *

Optional items(BF200/400/500/600)
Level Controller, Cooling Pile
Level Controller, Cooling Pile
Bath Cover
Bath Cover
External Circulation Nozzle
Float for Micro Tube
Float for Micro Tube
Product Name Model Specification
Level Controller
(Automatic Water Supplier)
OBF10 Water Supply by Direct Connected Tap Water Type (Electromagnetic Valve Open/Close Type)Fix to Testing Bath by Clamp
Cooling Pipe OBJ10 , O.D.φ10mm, with Neo Plane Hose 3m (φ13 x φ9)
Bath Cover OBI10 Polycarbonate Cover for Testing Bath Model BY100 (This Cover couldn’t be operated with Automatic Water Supplier, External Circulation Nozzle and Cooling Pile.)
External Circulation Nozzle OBG10 External Closed Circulation available by connection with BF400 or 500I.D. 9mm with Neo Plane Hose 3mFlow Rate: Approx. 8L/min., Lift: Approx. 1.8m
Float for Micro Tube OBH10 (For φ8mm) External Dimension: 90 x 137mm
OBH20 (For φ11mm) External Dimension: 90 x 137mm
Cable for BF500 OBL10 Multi Cable for Temp. Output, External Alarm Output, Time- up Output
OBK10 Cable for External Communication
RC23 Inter Face for Personal Computer Connection (with AD Adapter)
*Optional items(Testing BAth) (BF200/400/500/600)
BF200/400/500/600 Option2 Testing Bath
Material Model Bath Internal Size (W x D x H) Capacity Operating Temp. Range
  BZ100 230 x 390 x 150mm 12L Room Temp. to +200deg.C
BZ100D 240 x 300 x 200mm 13L
BZ200 300 x 500 x 150mm 20L
BZ300 300 x 500 x 200mm 27L
Polypropylene BY100 185 x 327 x 156mm 8L -5 to +80deg.C
BY200 300 x 455 x 152mm 18L
Acryl BX100 230 x 390 x 150mm 12L <=50deg.C (for Water Only)
BX100D 240 x 300 x 200mm 13L
BX200 300 x 500 x 150mm 20L