Low temperature constant temperature water tank (low GWP refrigerant) LTB-250β 1 piece

The cooling capacity has been improved by adopting a high-performance refrigerator. The circulating water cooler uses a square coil made of SUS304, so it is compatible with pure water. (*If using pure water, please use a liquid with an electrical conductivity of 10μs/cm or more (low purity).) Uses earth-friendly low GWP refrigerant R448A (GWP: 1386) The GWP value is approximately 65% ​​lower than that of the LTB-α series (GWP: 3920). The external circulation nozzle is installed on the front of the controller and can be freely rotated 180°. The temperature setting display uses a two-stage PV/SV display, so you can check the actual value and set value at a glance. By attaching the SB (support rod and bracket set), flasks and external sensors can be fixed in the tank with clamps. Circulation method: Closed system Temperature range (℃): -30 to +80 Cooling capacity (at20℃): 50Hz/370W, 60Hz/384W Temperature setting and display method: Key input method (0.1℃), PV/SV digital two-level display Temperature control method: Microcomputer PID control Temperature sensor: Thermocouple (Pt100Ω) Temperature control accuracy: ±0.1℃ (may exceed range depending on conditions) Heater: 1kW Size: 305×490×700mm Inside dimensions: 239 x 299 x 200 mm Effective opening dimensions: 235 x 162 x 200 mm Liquid tank: Approx. 12L Material: Water tank and cooling coil: Stainless steel (SUS304) Types of liquid used: Pure water, clean water, ethylene glycol, ethyl alcohol Refrigerant: R448A Circulation pump: Maximum flow rate: 6.7/7.5L/min, Maximum head: 3.5/5.0m (50/60Hz) Circulation nozzle outer diameter: φ11mm (suitable tube inner diameter φ8mm) Safety devices: Self-diagnosis function (detection of upper and lower temperature limits, float type dry-burn prevention, sensor abnormality, heater disconnection, leakage current/overcurrent breaker, refrigerator overload relay) External input/output: External temperature sensor input terminal (for Pt100), analog output system for thermometer (1 to 5 V), alarm output terminal (DC12 to 17 V, 20 mA) Timer function: 1 minute to 48 hours (in 1 minute increments) Power supply: AC100V 50/60Hz Maximum operating current: 15A Weight: 39kg Accessories: 2 external circulation nozzles, 2 insulated hoses (inner diameter φ8 mm x 1 m) *The freezer will not work if the liquid temperature is over 40°C. *Please avoid continuous operation at high temperatures (around 80°C). *Circulation pump performance is measured when the pump is used alone.