Digital Thermostats

Digital Thermostats

• Intelligent Control Optimization®, “ICO”, for Adaptive Intelligent PID Temperature Control
• Digital Display and Simple Interface
• Operating Setpoint, Plus Three Adjustable Preset Temperature Values
• User Recalibration Facility, for Optimum Accuracy at the Required Operating Temperature
• Dual-Position Fitting in S Tanks for Convenient Access
• Stirred Circulation within the Tank for Good Temperature Stability and Uniformity
• Low Liquid Protection Float Switch
• Fault Indication Display & Visual Alarm

Features Common to General Purpose Digital Models:
• Digital display, bright 4 character LED
• Exceptionally simple user interface based on a novel, sensitive rotor plus two keys

Item# Description U.S. List Price Quantity
72-4776 Digital Thermostat with Clamp, GD120, 220-240 VAC, 50/60 Hz
72-4775 Digital Thermostat with Clamp, GD120, 110-120 VAC, 50/60 Hz
72-4774 Digital Thermostat without Clamp, GD120, 220-240 VAC, 50/60 Hz
72-4773 Digital Thermostat without Clamp, GD120, 110-120 VAC, 50/60 Hz
72-4772 Digital Thermostat with Clamp, GD100, 220-240 VAC, 50/60 Hz
72-4771 Digital Thermostat with Clamp, GD100, 110-120 VAC, 50/60 Hz
72-4770 Digital Thermostat without Clamp, GD100, 220-240 VAC, 50/60 Hz
72-4769 Digital Thermostat without Clamp, GD100, 110-120 VAC, 50/60 Hz
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• Intelligent Control Optimization®, “ICO”, for Adaptive Intelligent PID Temperature Control
• Digital Display and Simple Interface
• Operating Setpoint, Plus Three Adjustable Preset Temperature Values
• User Recalibration Facility, for Optimum Accuracy at the Required Operating Temperature
• Dual-Position Fitting in S Tanks for Convenient Access
• Stirred Circulation within the Tank for Good Temperature Stability and Uniformity
• Low Liquid Protection Float Switch
• Fault Indication Display & Visual Alarm

Features Common to General Purpose Digital Models:
• Digital display, bright 4 character LED
• Exceptionally simple user interface based on a novel, sensitive rotor plus two keys

Model GD100
• 0° to 100°C

Model GD120
• 0° to 120°C
• Two pump connector plates supplied as standard, choice of pipe bore: 6 mm or 11 mm
• Powerful pump for external circulation, maximum flow rate 17 L/min, maximum pressure 310 mbar
• Timer function for reaction timing, 0 to 9999 minutes
• Variable high temperature alarm setting
• User-adjustable overtemp cut-out
There are five models, each available in two versions. Without clamp for use with Grant S(stainless steel) and P(plastic) tanks or with clamp, for use with almost any type of vessel.
Simple to use and easy to choose. Knowing the temperature range, degree of precision required and the size of tank needed is the starting point. This new Optima series of modular thermostatic controllers, baths and circulators makes it simple to arrive at the perfect solution for your application.
1. Select the Thermostat
First select the temperature range and performance required and then compare the functions of the five new thermostats. Wide range available, from the simple efficiency of the analog GA100 to the sophistication of the powerful, programmable GP200. All the digital thermostats in the Optima series offer the unique navigator and interactive display which makes set-up and calibration a straightforward task. Lastly decide between a version without clamp, for use with the new plastic or stainless steel tanks, or with a clamp, for use with almost any type of vessel. For the ultimate sophistication, the optional Labwise® PC software package allows two-way communication for status display, programming and data capture in the most demanding applications.
2. Select the Tank
Quality was the keynote in the development of the new range of baths from Grant. Choose between the P plastic, or S stainless steel baths, depending on your application. There is a wide choice of sizes to cope with the varying demands of the modern laboratory. Together with the Optima thermostats they provide the ideal solution for most laboratory applications.
3. Select the Accessories
Finally, no system is complete without the vital accessory items. Purpose designed lids, racks, coolers etc. help to optimize the performance of high quality laboratory equipment. Choose from the full range of accessories.
Specifications72-477672-477572-477472-477372-477272-477172-477072-4769
Depth Below Tank Rim135 mm135 mm135 mm135 mm135 mm135 mm135 mm135 mm
Display4 digit 13 mm LED4 digit 13 mm LED4 digit 13 mm LED4 digit 13 mm LED4 digit 13 mm LED4 digit 13 mm LED4 digit 13 mm LED4 digit 13 mm LED
Display Resolution
Electrical Supply VAC220-240110-120220-240110-120220-240110-120220-240110-120
External Probenonenonenonenonenonenonenonenone
Heater Power: 110-115V kW 1.3 kW 1.3 kW 1.3 kW 1.3 kW
Heater Power: 220-240V kW1.4 kW 1.4 kW 1.4 kW 1.4 kW 
Height Above Tank Rim180 mm180 mm180 mm180 mm180 mm180 mm180 mm180 mm
Hz50/6050/6050/6050/6050/6050/6050/6050/60
Level - Float Switchyesyesyesyesyesyesyesyes
Maximum Flow, (water)17 L/min17 L/min17 L/min17 L/minno pumpno pumpno pumpno pump
ModeDigitalDigitalDigitalDigitalDigitalDigitalDigitalDigital
ModelGD120GD120GD120GD120GD100GD100GD100GD100
No. Stored Programsnonenonenonenonenonenonenonenone
No. Stored Temperature Values44444444
Offset Adjustmentnononononononono
Overall Dims. Excl. Clamp, H x W x D315 x 115 x 145 mm315 x 115 x 145 mm315 x 115 x 145 mm315 x 115 x 145 mm315 x 115 x 145 mm315 x 115 x 145 mm315 x 115 x 145 mm315 x 115 x 145 mm
Pipe Bore Inlet/Outlet6mm/11 mm6mm/11 mm6mm/11 mm6mm/11 mmnananana
Programmablenononononononono
Pump Maximum Pressure310 mbar310 mbar310 mbar310 mbarno pumpno pumpno pumpno pump
RS-232nononononononono
Relaysnonenonenonenonenonenonenonenone
Safety Over Temperatureadjustable cut-outadjustable cut-outadjustable cut-outadjustable cut-outnononono
Setting Resolution0.10.10.10.10.10.10.10.1
Stability, S Tanks, (Din 58966) at 37
Temperature Range using P Tanksamb + 5 to 99amb + 5 to 99amb + 5 to 99amb + 5 to 99amb + 5 to 99amb + 5 to 99amb + 5 to 99amb + 5 to 99
Temperature Range using S Tanks0 to 1200 to 1200 to 1200 to 1200 to 1000 to 1000 to 1000 to 100
Temperature Range without Tank0 to 1200 to 1200 to 1200 to 1200 to 1000 to 1000 to 1000 to 100
Two-Point Re-Calibrationyesyesyesyesyesyesyesyes
Uniformity, S Tanks at 37