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  • Multi Function: Six Modes including Dry Block and Liquid Bath
  • Fast Response 35mm x 160mm Calibration Volume
  • Calibrate Whole Measurement Loop

Need advice on which model? Dry Block Selection Guide

These models will calibrate temperature probes from -45°C to 250°C with unrivalled flexibility. As a traditional Dry Block, several thermometers can be quickly calibrated.

One application for the Venus Site is for the calibration of oil temperature indicators (OTI) and Winding Temperature Indicators (WTI) in power generation, transmission and distribution.

Accessories are available to convert to a stirred liquid bath, for surface sensor calibration, to calibrate infrared thermometers and even to use as an ITS-90 Fixed Point System with calibration uncertainties as small as 0.0005°C. With excellent stability and distributed heating cooling zones for good uniformity these calibrators offer proven thermal performance.

These award winning calibrators are easy to use and are available in three versions – the Basic, the Site and the ADVANCED. The Basic has a digital display of set and nominal temperature, the Site additionally includes an inbuilt independent temperature indicator for a reference probe. The ADVANCED controller has inputs for reference and test thermometers with a further range of sophisticated features including automatic temperature cycling, secure data logging and full colour high resolution display.

All models include I-Cal Easy LOG software and the ADVANCED models additionally include software to manage logged data and configure the unit, more details.

These models meet the calibration capacity requirements of EURAMET calibration Guide 13 “EA Guidelines on the Calibration of Temperature Block Calibrators”


Venus 4951
Temperature Range*-35°C to 140°C
Stability: Dry Block / Liquid Bath±0.01°C
Display Resolution0.001°C over whole range
Input Channel Accuracy: ThermocoupleE, J, K, N ±0.2°C @ 660°C R: ±0.6°C S: ±0.7°C @ 660°C T: ±0.2°C @ 150°C
CJC Accuracy±0.35°C
Input Channel Accuracy: RTD±0.05°C ±0.005% RDG
Display Resolution0.01°C from -19.99 to 99.99°C then 0.1°C: 0.01°C Over PC Interface
COMMON Specifications
StabilityBlackbody ±0.03°C Surface Sensor ±0.5°C ITS-90 Cells ±0.0005°C
Uniformity – Between Wells Dry Block Mode (Radial)<0.008°C
Uniformity – Lower 40mm (Axial) Dry Block Mode<0.040°C
Uniformity – Radial Bath Mode<0.02°C
Uniformity – Lower 40mm (Axial) as Liquid Bath<0.026°C
Heating Time-30°C to 140°C: 15 mins
Cooling Time140°C to 0°C: 15 mins
Calibration Volume35 x 160mm
Standard Insert6 pockets, 2 x 4.5mm, 2 x 6.4mm, 1 x 8.0mm, 1 x 9.5mm diameter, all 157mm deep
Insert TypesChoice of three – See Accessories
Ethernet – supporting software and USB Host
CJC Accuracy0.35°C
Dimensions384H (including handle) x 212W x 312D mm
Power150 Watts
Voltage115Vac or 230Vac 50/60Hz
* In ambient of 20°C: Min. Temperature is 55°C Below Ambient, Absolute Minimum -45°C





Venus 4951

-35°C to 140°C

The Venus is part of the Isocal-6 family; choose to calibrate all types of temperature sensors with high accuracy and unrivalled flexibility. Ideal for portable or bench calibration with fast heating and cooling times.

  • Multi Function: Six Modes including Dry Block and Liquid Bath
  • Fast Response 35mm x 160mm Calibration Volume
  • Calibrate Whole Measurement Loop
  • OTI/WTI Calibratior

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