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Bath and Circulator: Refrigerated & Heating circulator


Rapid heating and cooling throughout the entire
temperature range!

RW-G series has powerful circulation pump for external and internal circulating. The temperatures can be down to maximum -35℃ that maintain and control accurate low temperatures for use with Refractometers and Viscometers.

Model Name:
»RW-0525G/ 0540G (5.0L)
»RW-1025G/ 1040G (10.0L)
»RW-2025G/ 2040G (20.0L)
»RW-3025G/ 3040G (30.0L)

Operating features
• -25℃ to 150℃ for RW-25G/ 
  -35℃ to 150℃ for RW-40G
• Microprocess PID control/ Auto-tuning/ Calibration
• Digital timer: 1 min to 99 hr 59 min, delayed ON/ OFF
• Over-temperature limiter and low fluid level protection
• 3 different temperature values memorable without auto-tuning
• Digital LED display (0.1℃ resolution) with splash-proof keypads 
• RS-232 interface available

Constructional features
• Turbulence reduced five-speed duplex pump and built-in cooling coil let you use in open or closed bath applications (1 to 3 steps of pump for internal circulation/ 4 and 5 steps for external circulation)
• Baffle plate screens circulating pump, heater and sensor to minimize shaking bath fluids and protect sample and operators from direct contact
• Dry-running protection; automated heating element cut-off and audible and visual warning 
• Seamless stainless steel tank with a reservoir drain that resists corrosion and make cleaning easy
• Use CFC-free refrigerant R-134A, R-404A and double service valve to prevent the leakage of refrigerant
• Quick-release front grille for easy condenser cleaning and space saving design uses minimal bench space.

Model RW-0525G RW-1025G RW-2025G RW-3025G
Bath volume (L/cu ft) 5.0 / 0.2 10.0 / 0.4 20.0 / 0.7 30.0 / 1.1
Working Temperature Rang2) (℃/℉)
-25 to 150 / -13 to 302
Temperature Stability 1) (±℃/℉) 0.05 / 0.09 0.05 / 0.09 0.05 / 0.09 0.08 / 0.14
Cooling
capacity
at -20℃ (-4℉),W 30 50 260 390
at 0℃ (+32℉),W 230 250 410 570
at +20℃ (+68℉),W 320 380 560 680
Refrigerator 1/3 LBP, R-134A 1/3 LBP, R-404A 1/2 LBP, R-404A 3/4 LBP, R-404A
Pump Max. pressure,
max. flow rate
5.9 PSI (406.8 millibar), 7.4 gallons/minute (28.0 liters/minute)
Max. suction flow rate2) 2.6 gallons/minute (10.0 liters/minute)
Dimensions Bath opening/ depth 
(W×L, D)(mm/inch)
150×99, 160
/ 5.9x3.9, 6.3
211×154, 180
/ 8.3x6.1, 7.1
290×214, 200 
/ 11.4x8.4, 7.9
300×264, 230
/ 11.8x10.4, 9.0
Overall 
(W×L×H)(mm/inch)
302×438×690
/ 11.9x17.2x27.2
360×490×780
/ 14.2x19.3x30.7
380×560×825
/ 15.0x22.0x32.5
440×620×895
/ 17.3x24.4x35.2
Net weight(kg/lbs) 37.0 /81.6 44.0 / 97.0 60.0 / 132.2 67.0 / 147.7
Electrical Requirements
(230V, 60Hz)
7.0A 9.2A 12.8A 13.8A
Cat. No. AAH57001K AAH57011K AAH57021K AAH57031K
Electrical Requirements 
(230V, 50Hz)
7.0A 9.2A 12.8A 13.8A
Cat. No. AAH57002K AAH57012K AAH57022K AAH57032K
Electrical Requirements
(120V, 60Hz)
12.6A 12.6A - -

 

* RW-2025G, 3025G are provided ONLY for 230 voltage. 
1) Technical data (according to DIN 12876)
2) The cooling capacity is measured on a 220V/ 69Hz electrical condition. 
3) The additional suction function is optional.

 

 

 

Model RW-0540G RW-1040G RW-2040G RW-3040G
Bath volume (L/cu ft) 5.0 / 0.2 10.0 / 0.4 20.0 / 0.7 30.0 / 1.1
Working Temperature Rang2) (℃/℉) -35 to 150 / -31 to 302
Temperature Stability 1) (±℃/℉) 0.05 / 0.09 0.05 / 0.09 0.05 / 0.09 0.08 / 0.14
Cooling
capacity
at -20℃ (-4℉),W 80 150 400 440
at 0℃ (+32℉),W 150 330 660 700
at +20℃ (+68℉),W 280 450 800 880
Refrigerator 1/2 LBP, R-404A 1/2 LBP, R-404A 3/4 LBP, R-404A 1 LBP, R-404A
Pump Max. pressure, 
max. flow rate
5.9 PSI (406.8 millibar), 7.4 gallons/minute (28.0 liters/minute)
Max. suction flow rate2) 2.6 gallons/minute (10.0 liters/minute)
Dimensions Bath opening/ depth 
(W×L, D) (mm/inch)
150×99, 160
/ 5.9x3.9, 6.3
211×154, 180
/ 8.3x6.1, 7.1
290×214, 200
/ 11.4x8.4, 7.9
300×264, 230
/ 11.8x10.4, 9.0
Overall 
(W×L×H) (mm/inch)
302×438×690
/ 11.9x17.2x27.2
360×490×780
/ 14.2x19.3x30.7
380×560×825
/ 15.0x22.0x32.5
440×620×895
/ 17.3x24.4x35.2
Net weight (Kg/lbs) 38.0 /83.8 44.0 / 97.0 60.0 / 132.2 67.0 / 147.7
Electrical Requirements
(230V, 60Hz)
8.5A 10.7A 13.8A 14.8A
Cat. No. AAH57101K AAH57111K AAH57121K AAH57131K
Electrical Requirements 
(230V, 50Hz)
8.5A 10.7A 13.8A 14.8A
Cat. No. AAH57102K AAH57112K AAH57122K
AAH57132K

* RW-0540G, 1040G, 2040G, 3040G series are provided ONLY for 230 voltage.
1) Technical data (according to DIN 12876)
2) The cooling capacity is measured on a 220V/ 69Hz electrical condition. 
3) The additional suction function is optional.