R4 Series refrigerated baths and circulators

Low temperature refrigerated circulating baths - technical specifications
Grant Optima™ heating circulators
= standardGeneral purpose digitalAdvanced digital
T100TC120TX150TXF200
Stability (DIN 12876) water @ 10°C °C ± 0.1 ± 0.1 ± 0.1 ± 0.1
-10°C for 50% water, 50% glycol °C   - ± 0.1 ± 0.1 ± 0.1
Uniformity (DIN 12876) water @ 10°C °C ± 0.1 ± 0.1 ± 0.1 ± 0.1
-10°C for 50% water, 50% glycol °C   - ± 0.1 ± 0.1 ± 0.1
Setting resolution °C 0.1 0.1 0.1 (0.01 with Labwise™)
Display   4 digit LED full colour QVGA TFT
Timer function   - 1 min to 99 hrs 59 mins
No. stored temperature values   3 3 3 3
Calibration points   2 2 2 2
Offset adjustment   - -
Socket for external probe (TXPEP,TXSEP)   - -
Communications interface   - - USB & RS232
Programmable   - - remote via PC via user interface/ remote via PC/direct
No. stored programs   - - 1 x 30 segment LabwiseTM required 10 x 100 segment
Relays   - - 1 1
Safety overtemperature fixed adjustable cut-out
fluid level - float switch  
Alarms (can be configured to switch a relay)   - high (no relay) high and low
Language capability   - - EN, FR, DE, IT, ES
Heater power 230 V W 1290 1290 1840 1840
  120 V W 1440 1440 1445 1445
Electrical power 230 V W 1400 (50-60 Hz) 1400 (50 Hz) 2000 (50 Hz) 2000 (50-60 Hz)
  120 V W 1500 (50-60 Hz) 1500 (50-60 Hz) 1500 (50-60 Hz) 1500 (50-60 Hz)
Height above tank rim mm 200 200 200 200
Depth below tank rim mm 135 135 135 135
Grant Optima™ thermostat pumps (integral)
Maximum pressure water mbar - 210 310 530
Maximum flow water L/min - 16 18 22 (adjusted flow rate)
Pump connector 6mm bore   fits 9mm inner diameter tubing
Pump connector 11mm bore - fits 15mm inner diameter tubing
Grant R series refrigeration units - models and specifications
Grant Optima™ heating circulators
  = standardR4R5
Temperature range with T100 heating circulator 0-100°C 0-100°C
Temperature range with TC120 heating circulator -20 to 100°C -20 to 100°C
Temperature range with TX150 heating circulator -30 to 100°C -47 to 100°C
Temperature range with TXF200 heating circulator -30 to 100°C -47 to 100°C
Relay control (refrigeration on/off)
Refrigerant R134a R404a
Drain
Overtemperature cut -out 100°C limit
Water freezing protection thermostat
Refrigeration high pressure switch 27 bar
Cooling power**, ambient 20°C 
@ 20°C  W
900 1100
@ 0°C  W 500 1050
@ - 10°C  W 300 800
@ - 20°C  W 180 580
@ - 30°C  W 40 370
@ - 40°C  W - 130
@ - 47°C  W - 25
Electrical power (maximum) 
230V  W
850 (50 Hz)* 1400 (50 Hz)*
120V  W 780 (50 Hz)* -
EMC emissions  class B B

* Optima™ thermostats and accessory pumps can be powered from the back of the R2 and R3 220-240 V refrigeration units. Allow up to 2 kW of extra power from the electrical supply
** The optional VTP pumps will transfer additional heat to the baths and reduce the net cooling power of the refrigeration unit. The above figures must be taken into consideration when choosing the refrigeration unit
Note: when ordering a VTP pump, please specify which refrigeration base unit it is to be used with