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Programmable Low Temperature Circulating Water Bath


Low temperature water bath with high performance and wide operating temp. range.
Operating temp. range
-20deg.C to +80deg.C
Temp. Distribution Accuracy
±0.02 deg.C)
Bath Capacity

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  • Temp. adjustment accuracy achieve to ±0.02deg.C
  • Powerful circulation pump makes external circulation of analytical instrument is possible
  • Various Support Functions
  • Remote control is available
  • Control Panel is Removable with Communication Cable for the Remote Control. (Communication Cable is Optional.)

Model BH302
Circulation Type Water Jet Pump Circulation / Closed System Circulation
Operating Temp. Range -20deg.C to 80deg.C
Temp. Adjustment Accuracy ±0.02deg.C JTM K05 (at 20 deg.C)
±0.05deg.C JIS ( at 20 deg.C)
Temp. Indication Unit 0.1deg.C
Cooling capacity Approx. 360W (310 kcal/h) at 20deg.C
Refrigerator/Coolant 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 30deg.C
Temp. Control System PID Control by Micro Computer
Temp. Setting/Display Digital Setting, LED Display, Fluorescent Display Tube Type Guide 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 999.9hrs.Timer/Time Changeable 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, Key lock Function, Breakout Protection Function, Automatic Overheat Prevention, Independent Overheating Prevention
Other Function Drain Cock, RS485 Communication Function, Temp. Output Terminal, Alarm Output Terminal, Calibration Off Set Function.
Water Bath Dimension W296x D501 x H200mm
Water Bath Capacity 30L (liquid volume approx. 20L)
Effective Water Bath Dimension W224 x C338 x H200mm 
External Dimension W386 x D590 x H1135mm (Water Bath Height 830mm)
Power Source AC100V, 50/60Hz, 14A (15A)
Weight Approx. 68kg
Accessories External circulation hose (PS1/2- φ14) 2 pcs ,  Drain hose 1 pc

Program Controller
Control Panel is Detachable. Have to install Optional Item "Remote Control Power Source" in case Communication Cable Length is more than 5m.

*Back Side
Back Side BH201/301

Optional items
Remark Description Model No. Product Code
  I.D. 12mm, length 2m Circulation Insulation hose BH302 222088
  External communications adapter BH302 281388
  External Pt Sensor, Pt100Ω A-class with Protection Tube 3m BH302 281350
  Communication Cable for Remote Control, 4-pole, 5m BH302 281397
Panel Stand for Remote Control BH302 281398
  Battery for remote operation (DC5V) BH302 281399
  Caster stop holder ( 4 pcs ) BH302 281440
The transportation cost will not be required if the order is together with main unit except the item marked "○".
In case you order the item marked "○" together with the main unit, please ask Yamato to obtain the correct transportation cost.
Panel Stand for Remote Control
Remote ControlPower Source
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