High Precision Water bath (BH302)
The BH302 is a low temperature water bath from Yamato Scientific that combines high performance with a wide operating temperature range of -20°C to 80°C. It achieves a temperature adjustment accuracy of ±0.02°C, and its powerful circulation pump enables external circulation with analytical instruments.
Manufacturer: Yamato — Japan
Overview
The BH302 is a low temperature water bath from Yamato Scientific that combines high performance with a wide operating temperature range of -20°C to 80°C. It achieves a temperature adjustment accuracy of ±0.02°C, and its powerful circulation pump enables external circulation with analytical instruments. The bath is equipped with various support functions including RS485 communication, a temperature output terminal, and an alarm output terminal, and its control panel can be removed for remote control using an optional communication cable.
High Precision Temperature Control
The bath achieves a temperature adjustment accuracy of ±0.02°C.
Powerful External Circulation
A powerful circulation pump makes external circulation of analytical instruments possible.
Various Support Functions
The bath is equipped with various support functions and remote control capability.
Removable Control Panel
The control panel is removable and can be used with an optional communication cable for remote control.
Common Specifications
| Specification | High Precision Water bath (BH302) |
|---|---|
| Circulation type | Water jet pump circulation (closed system circulation) |
| Operating temp. range | -20°C to 80°C |
| Temp. adjustment accuracy | ±0.02°C JTM K05 (at 20°C), ±0.05°C JIS (at 20°C) |
| Temp. indication unit | 0.1°C |
| Cooling capacity | Approx. 360W (310 kcal/h) at 20°C |
| Refrigerator/coolant | Air-cooled type, 300W / R404A |
| Pump max. flow (50/60Hz) | 14/15L/min. |
| Pump max. lift (50/60Hz) | 2.8/3.4m |
| Heater | 900W |
| Surrounding operation temp. range | 5 to 30°C |
| Temp. control system | PID control by microprocessor |
| Temp. setting/display | Digital setting, LED display |
| Temp. sensor | Pt sensor, Pt100Ω A-class (for temp. control) + K-thermocouple (for overheat prevention), double sensor |
| Timer | 1min. to 99hrs. 59min., 100 to 9999hrs. timer/time switchable function |
| Operation function | Fixed temp. operation, automatic stop/start operation at setting time, program operation (max. 99 steps, repeating, gradient operation), programming automatic start operation |
| Safety countermeasures | Electric leakage breaker for over current protection, refrigerator overload relay, refrigerator pressure detection, float switch, delay timer function for refrigerator protection, automatic overheat prevention, independent overheating prevention |
| Other function | Drain cock, condenser filter, RS485 communication function, temp. output terminal, alarm output terminal, calibration off set function |
| Water bath dimension | W296×D501×H200mm |
| Water bath capacity | 30L (liquid volume approx. 20L) |
| Accessories | External circulation hose nipple (PS1/2-φ14) 2 pcs, drain hose 1 pc |
| External dimensions (W×D×H mm) | 386×590×1135mm |
| Power source | AC115V/AC220V, Single-phase with step down transformer |
| Weight | 68kg |