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Programmable Immersion Heater Circulator
Programmable Ramp/Soak Control
Up to 9 Program Storage
Large Dual Line Digital Display
Precision Digital PID Control
High-Flow Dual-Outlet Pump

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Product Overview
The TH8500 immersion heater circulator provides precision temperature control with advanced ramp/soak functionality. Up to 9 programs with a total of 288 segments can be programmed to allow complete control over your temperature profile. With excellent temperature stability of +/- 0.02C in a Ratek insulated tank, the TH8500 also features a powerful adjustable 17 L/min pump which ensures uniform temperatures in even the largest of baths.

The large bright dual-line LED display is easily visible from any angle and makes it easy to monitor your program from anywhere in the lab. The TH8500 features a host of safety features including low-level alarm and cut-out, over and under temperature alarms as well as a manually resettable failsafe thermostat. With a high-power 2.2 kW heating element, the TH8500 is capable of heating larger baths and is suited to applications where a rapid ramp-up and maintenance of temperature is required. The advanced temperature profiling gives you complete control of the temperature ramping over time, and the TH8500 can work in conjunction with a cooling system to increase ramp-down rates.

Where external circulation is required, a Ratek insulated bath such as the IT700 with re-circulation ports is ideal to create a closed loop system with precise temperature control. The TH8500 is whisper quiet, simple to operate and built to last.
Temperature Control Advanced digital PID with fuzzy logic, with advanced ramp and soak functionality  
Program Functions Up to 9 programs stored concurrently in non-volatile memory with a total of 288 segments. Simple user programming via front panel keypad. Supports ramp, dwell and hold back.  
Circulation Type High-flow dual outlet pump with adjustable flow rate, 0-17 L/min internal re-circulation. Using external pump-out on 1 port, maximum head 1.7 metres, 8 L/min at 0 head, 4.8 L/min at 1 metre head  
Digital Display Type Dual-line active bright LED  
Information Display - Current & set temp displayed concurrently
- Over & under temp alarm set-point
- Run/hold indicator
- Ramping/idling indicator
- Low water level indicator
- Heating indicator
- 0.1° resolution
Temperature Control Range -30C to 100.0C, (external cooling required for ambient +7C or less)  
Control Stability +/- 0.02C in Ratek insulated water bath with lid  
Heating Power 2,200 Watts  
Minimum Tank Depth 200 mm  
Motor and drive type Silent long life brushless AC  
Alarm - Audible & visual over-temp with cut-out
- Audible & visual low level with cut-out
- Visual under-temp indicator
Safety features - Resettable safety thermostat
- Low water level cut-out
- Over-temp cut-out
- Over-current protection
- Fully enclosed element guard
Power input 240 VAC / 50-60 Hz  
Overall dimensions Overall dimensions W125 x D190 x H360mm  
Nett weight 4.95 kg  
Accessories & Related Products
Model No : IT1100
11 Litre Stainless Unheated Water Bath

Model No : IT2400
24 Litre Stainless Unheated Water Bath

Model No : IT700
7 Litre Stainless Unheated Water Bath

This product is covered by Ratek's 3 year parts and 12 month labour back to base warranty. All spare parts for all current models are kept in stock in Melbourne.
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Australia: 03 9887 2161
International: +613 9887 2161
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