BF Series
The BF Series is an immersion-type constant temperature controller from Yamato Scientific designed to convert general containers into a thermostatic water bath.

Manufacturer: Yamato — Japan
Overview
The BF Series is an immersion-type constant temperature controller from Yamato Scientific designed to convert general containers into a thermostatic water bath. It offers various operating functions from fixed temperature operation to programmable operation, and a Testing Bath BY100 (polypropylene, for water) is included as standard. Data output and external communication functions are available as options. The series includes four models, BF201, BF401, BF501 and BF601, which differ mainly in stirring method and power requirements.
Immersion-Type Temperature Controller
The BF Series functions as an immersion-type water bath temperature controller.
Fixed and Programmable Operation
It offers various functions from fixed temperature operation to programmable operation.
Optional Data Output and Communication
Data output and external communication are available as options.
Standard Testing Bath Included
A Testing Bath BY100 (polypropylene, for water) is included as standard equipment.
Common Specifications
| Specification | BF Series |
|---|---|
| Temp. setting range | -20.0 to 90°C |
| Temp. control accuracy | ±0.05/0.1°C (at 37/80°C) |
| Heater | Stainless pipe heater 1.0kW |
| Temp. control system | PID control by microcomputer |
| Temp. setting | Digital setting by key |
| Temp. display | Digital display by green LED, min. digit indication 0.1°C, setting temp./measured temp. changeable |
| Operating function | Fixed operation |
| Additional function | Temp. pre-setting (memory/recall 10 temp.) |
| Heater circuit control | Triac zero-cross type |
| Sensor | Platinum resistance temperature detector (Pt100Ω) |
| Safety countermeasure | Self diagnosis function (automatic overheat prevention, abnormal temp. sensor, heater, triac, relay), circuit protector, float type empty boiling preventor, independent overheat prevention device |
| Clamp available thickness | Max. 35mm |
| Accessories | Testing bath model BY100 (polypropylene) |
Model Comparison
| Specification | BF201 | BF401 | BF501 | BF601 |
|---|---|---|---|---|
| Operating temp. range | Room Temp. +5 to 80°C | - | Room Temp. +5 to 80°C | - |
| Stirrer | Propeller Stirring | Water Jet Stirring | Water Jet Stirring | Propeller Stirring |
| External dimensions (W×D×H mm) | 140×138×312mm | 140×138×312mm | 140×138×312mm | 140×138×312mm |
| Power source | AC220V 5A, Single-phase with step down transformer | AC220V 5A, Single-phase with step down transformer | AC220V 5A, Single-phase with step down transformer | AC220V 6A, Single-phase with step down transformer |
| Weight | 4kg | 4kg | 4kg | 4kg |
