BL Series
The BL Series is a large-capacity constant low temperature water bath line from Yamato Scientific featuring an observation window, with an operating temperature range of -15°C to +70°C. It supports auto stop and auto start operations, auxiliary with RS485 communication function and a temperature output terminal (4 to 20mA).

Manufacturer: Yamato — Japan
Overview
The BL Series is a large-capacity constant low temperature water bath line from Yamato Scientific featuring an observation window, with an operating temperature range of -15°C to +70°C. It supports auto stop and auto start operations, auxiliary with RS485 communication function and a temperature output terminal (4 to 20mA). Large observation windows are installed, measuring W250×H135mm on the BL401 and W450×H135mm on the BL810, and the shelf plates can be height-adjusted across two sections. The series includes two models, BL401 and BL810.
Large Capacity with Observation Window
The bath offers a large capacity and an observation window.
Communication and Auto Operation
The bath supports auto stop and auto start operations, auxiliary with RS485 communication function and a temperature output terminal (4 to 20mA).
Large Observation Windows
Large observation windows are installed, measuring W250×H135mm on the BL401 and W450×H135mm on the BL810.
Adjustable Shelf Plates
The shelf plates' height can be adjusted across two sections.
Common Specifications
| Specification | BL Series |
|---|---|
| Method | Pump circulating cooling |
| Operating temperature range | -15~+70°C |
| Temperature control accuracy | ±0.1°C |
| Temperature distribution accuracy | ±0.3°C |
| Temperature indicating unit | 0.1°C |
| Cooling capacity | Approx. 540W (464 kcal/h), at fluid temp. 15°C |
| Temperature control | PID control |
| Temperature sensor | Temp. controller: Pt thermal resistance, overheat protection: K thermocouple |
| Temp. setting, display | Digital setting and display |
| Refrigerator, refrigerant | Air cooling 350W, R404A |
| Stirring method | Jet stirring method by magnetic pump |
| Operating environmental temp. range | 5~30°C |
| Safety device | Overcurrent ELB, self-diagnosis, refrigerator overload protector, refrigerator delay timer of protection, refrigerator pressure detection, float switch preventing pump idling, auto overheat protection, overheat protector, key lock, etc. |
| Other function | Water valve, condenser filter screen, deviation correction, external communication (RS485), refrigerator pressure indicator, power outage compensation, temp. output terminal |
| Shelf plate steps/pitch | 2 steps, 30mm adjustable pitch |
| Accessories | Drain hose, condensation water drainage hose, shelf plate |
Model Comparison
| Specification | BL401 | BL810 |
|---|---|---|
| Internal dimensions (W×D×H mm) | 400×300×300mm | 600×400×350mm |
| External dimensions (W×D×H mm) | 680×390×805mm | 880×490×855mm |
| Power source | AC220V 9A, Single-phase with step down transformer | AC220V 15A, Single-phase with step down transformer |
| Weight | 68kg | 105kg |
