The Grant Optima™ GR150 series of digitally controlled refrigerated baths and re-circulators provides outstanding performance for routine and sophisticated applications requiring accurate temperature control in the range of -47 to 100°C.
Grant GR150 series refrigerated systems combine the powerful and versatile Grant Optima™ digital immersion thermostat GR150 with a choice of five rugged stainless steel refrigeration units with different facilities and working volumes.
The GR150 immersion thermostat incorporates Intelligent Control Optimisation™ (ICO) for adaptive intelligent PID temperature control and includes a powerful integral pump, making GR150 series refrigerated systems suitable both for immersing samples and circulating temperature controlled fluid to external devices. The temperature range and heater power are automatically limited according to the liquid type selected.
The GR150 control unit has a host of powerful and convenient programming features for optimum application flexibility. These include a convenient heater timer for early starts/late shutdowns, a programmable relay for switching external devices on/off, option for remote temperature monitoring, RS232 interface for PC communication and data collection, and memory capacity for one program of up to 30 segments.
- Simple-to-use rotor plus two keys provide access to the interactive interface for fast, accurate set-up
- Dual display: bright LED for temperature display plus 2-line 16 character LCD for easy programming
- Twin heaters, 2kW heater power for fast heat up
- Pt1000 external probe socket for remote monitoring
- Powerful integral pump, maximum flow 17L/min
- Operating setpoint plus 3 adjustable preset temperatures for convenience
- User calibration facility for optimum accuracy at the required operating temperature
- Variable high and low temperature alarm settings - configurable to switch a relay
- Visual and audible alarm - alert you when your attention is required
- Choice of five operator languages
- Choice of five refrigerated (R) tanks with different facilities, working volumes and cooling capacities
- Cooling/heating range: -47 to 100°C (dependent on refrigeration unit selected)
- Stability ± 0.1°C
Note: The refrigeration unit can be switched off indepedendently of the thermostat to allow heating only applications. All the refrigeration base units can be used up to a maximum temperature of 100°C.
The Grant Optima™ GR150 R series of refrigerated baths and re-circulators provides a choice of five models with different facilities, stainless steel tank capacities and cooling power to suit different applications.
The Grant combined tank/refrigeration units are robustly constructed for long life and efficient and reliable operation.
- Powerful and efficient cooling with ozone friendly refrigerant
- Rapid cool down
- Quiet operation
- Cooling/heating range: -47 to 100°C (in combination with GR150 thermostat; dependent on refrigerated tank selected)
Choose from the following combinations of GR150 immersion thermostat and R tank/refrigeration units:
GR150-R1
- 5 litre tank
- cooling power 140W @ 0°C
- temperature range -20 to 100°C
GR150-R2
- 5 litre tank with drain tap
- relay control for refrigeration on/off*
- cooling power 140W @ 0°C
- temperature range -20 to 100°C
GR150-R3
- 5 litre tank with drain tap
- relay control for refrigeration on/off*
- cooling power 156W @ 0°C
- temperature range -30 to 100°C
GR150-R4
- 20 litre tank with drain tap
- refrigeration high pressure switch
- relay control for refrigeration on/off*
- cooling power 500W @ 0°C
- temperature range -30 to 100°C
GR150-R5
- 12 litre tank with drain tap
- refrigeration high pressure switch
- relay control fro refrigeration on/off*
- cooling power 1050W @ 0°C
- temperature range -47 to 100°C
Note:The refrigeration unit can be switched off indepedendently of the thermostat to allow heating only applications. All the refrigeration base units can be used up to a maximum temperature of 100°C.
*For R2 to R5 models, the refrigeration can be switched on and off by the GR150 thermostat during a heating and cooling program.
Accessory options for the Grant Optima GR150 R series
Accessory vertical turbine pumps
Required only where the application demands a higher pressure than that delivered by the GR150 internal pump to maintain flow. Note: When an accessory pump is fitted, the available working area is reduced.
Grant accessory pumps feature a unique low noise, compact design which produces high pressure with low heat input to the liquid.
Supplied with pipe connections and special lid for fitting to tank, pipe bore 12.7 mm.
VTP1 - max. pressure 1000 mbar, max. flow 9 L/min
VTP 2 - max. pressure 1650 mbar, max. flow 12 L/min
Specification comparison table – VTP optional pumps and Optima GR150 thermostat pumps
| |
|
|
VTP1 |
VTP2 |
GR150 |
| Max. pressure |
water |
mbar |
1000 |
1650 |
310 |
| Max. flow |
water |
L/min |
9 |
12 |
17 |
| Pipe bore |
inlet/outlet |
mm |
12.7 |
12.7 |
6, 11 |
| Mains power connection |
|
10 amp IEC |
10 amp IEC |
- |
| Power consumption |
W |
30 |
40 |
- |
| Power output to liquid @20°C |
W |
15* |
22* |
- |
| Safety |
|
|
thermal fuse |
thermal fuse |
|
*The VTP optional pumps will transfer additional heat to the baths and reduce the net cooling power of the unit. The above figures must be taken into consideration when choosing the refrigeration unit.
Note: The refrigeration base unit selected must be specified when ordering the required VTP optional pump.
External probes
for monitoring and controlling temperature of remote loads
FF17 flexible polythene probe, 2 m cable, 100mm x Ø 4.5mm, very fast response
LL17 stainless steel probe, 2 m cable, 125mm x Ø 5mm
Labwise PC software
Allows two-way communication for status display, programming and data capture