BH Series
The BH Series is a bench-top precision constant temperature water bath from Yamato Scientific equipped with a high-performance controller for higher precision and a wider temperature range. It achieves a temperature adjustment accuracy of ±0.01°C at 20°C, and the BH501 model can be used as a precision water or oil bath.
Manufacturer: Yamato — Japan
Overview
The BH Series is a bench-top precision constant temperature water bath from Yamato Scientific equipped with a high-performance controller for higher precision and a wider temperature range. It achieves a temperature adjustment accuracy of ±0.01°C at 20°C, and the BH501 model can be used as a precision water or oil bath. The bath offers a maximum of 99 steps of program operation, fixed temperature operation, quick auto stop, auto stop and auto start functions, along with RS485 communication, a temperature output terminal, an alarm output terminal, a calibration offset function, and a key lock function. Its control panel can be detached from the main unit for remote operation using an optional communication cable.
High Precision Control
The precision controller enables a temperature adjustment accuracy of ±0.01°C at 20°C.
Versatile Use
The BH501 can be used as a precision water or oil bath.
Extensive Program Operation
The bath offers a maximum of 99 steps of program operation, fixed temperature operation, quick auto stop, auto stop, and auto start functions.
Communication and Remote Control
It features RS485 communication, a temperature output terminal, an alarm output terminal, calibration offset, and a key lock function, and its control panel can be removed for remote control using an optional communication cable.
Common Specifications
| Specification | BH Series |
|---|---|
| Circulation system | Water jet pump circulation / external closed circulation |
| Operating temperature range | RT+15~100°C |
| Temperature adjustment accuracy | ±0.01°C (water: RT+15°C~80°C) |
| Temperature indication unit | 0.1°C |
| Pump max. flow (50/60Hz) | 14/15L/min. (circulation pressure loss when below 10kPa) |
| Pump max. lift (50/60Hz) | 2.8/3.4m (water flow about 0.5L/min) |
| Heater | 1kW |
| Ambient temperature range | 5~30°C |
| Temperature control / system | PID control by microprocessor |
| Sensor | W sensor: Pt 100Ω A-class (for temperature control) + K-thermocouple (for overheat prevention) double sensor |
| Timer | 1min.~99hrs.59min., 100~9999hrs timer / time switchable function |
| Operation function | Fixed temp. operation, quick auto stop, auto stop / start at setting time, program operation (max. 99 steps, repeating, gradient operation), program auto start operation |
| Safety device | Earth leakage circuit breaker, key lock function, breakout protection function, automatic overheating prevention, independent overheating prevention, float switch |
| Other functions | RS485 communication function, temperature output terminal, alarm output terminal, calibration offset function |
| Accessories | Hose nipple (1/2×ø14mm) 2pcs. |
Model Comparison
| Specification | BH401 | BH501 |
|---|---|---|
| Internal dimensions (W×D×H mm) | 239×299×200mm | 239×299×200mm |
| External dimensions (W×D×H mm) | 310×396×607mm | 310×396×607mm |
| Power source | AC220V 5A, Single-phase with step down transformer | AC220V 6A, Single-phase with step down transformer |
| Weight | 20kg | 20kg |