MI 1330A Overføringsstandard

Measurement International 1330A Multifunksjon overføringsstandard

• Calibrator Calibration
• DMM Calibration
• 1 Ω, 10 kΩ, 10 V
• 1 Ω Resistance Drift < 0.2 × 10^(-6)/Year
• 1 Ω Temperature Coefficient < 0.05 × 10^(-6)/°C
• 10 kΩ Resistance Drift < 0.2 × 10^(-6)/Year
• 10 kΩ Temperature Coefficient < 0.2 × 10^(-6)/°C
• Voltage Drift < 3 × 10^(-6)/Year
• Standards Temperature Variable from 20 °C to 23 °C
• Temperature Stability < 0.05 °C
• Calibration Value History Internally Stored
• Actual Value Extrapolation Available for Self Alignment
• Output Connector Temperature Controlled
• Local and Remote Control for Automatic Calibration
• Software Available
• Industry Standard Method
• In Collaboration with INRiM

One Single Instrument
3 Standards
Artifact Calibration of calibrators and DMMs

How do they work?
The MI Model 1330A transfer standard has been designed with speed and accuracy in mind giving customers the ability to perform their own in house full calibration of calibrators such as the 5700 series. Users no longer are required to send their Calibrator or DVM out for artifact calibration. The new turnkey fully automated solution from MI has you covered!
Based on years of research the 1330A is designed using the highest quality of resistance standards (MI 1 Ω and 10 kΩ) and a newly designed and the new LTZ1000 10 Volt source all enclosed in a shielded temperature controlled enclosure.

With the fully automated software, users can now perform a full calibration of the Calibrator or DVM. All you have to do is connect it and press Go!

With a real clock calendar, the 1330A can show both the 1330A Standards calibration values and updated ones between two calibrations according to an internal algorithm.

Saving you Time and Money
High-precision digital multi-meters (DMMs) and multifunction calibrators (MFCs), operating in the five low‑frequency electrical quantities, are widely used in calibration laboratories. These instruments can be calibrated by means of “artifact calibration”, requiring only 10 V, 1 Ω and 10 kΩ standards. This is a proven method currently used throughout the industry, where calibration of the units are done with customers having to either outsource the calibration at a high cost and downtime. With the 1330A you simply only need to connect the Calibrator or DVM and in the software select Start!

The 1330A Structure
Fig. 1 shows the block schematic of the 1330A. Inside a copper box the three standards are housed and thermally controlled by a PID system. The output of the desired standard is connected to a low thermal force DC switch made of latching relays inserted in the copper box and maintained at the same temperature of the standards. The temperatures of the standards and of the sensors are controlled by a microprocessor. The system can operate in stand-alone mode or with a PC connection via USB 2.0. With the real clock calendar, it is possible to compensate the time drift of the standards. The display can show either the actual or compensated standard value.

The two resistors are also kept inside a thermal equalizer. The resistors of the 10 kΩ net are put around the cylinder and not in oil. The DC Voltage Standard board is inside a copper box, which in turn is inserted into the main external case connected to the ground potential.

The 1330A temperature can be measured either with a 100 Ω platinum thermometer or with an electronic thermometer connected to the microcontroller. The 1330A temperature stability is ± 0.01 °C, with the 1330A in a laboratory at 23 ± 0.5 °C. A photo of the 1330A calibrating a high precision DMM is shown in the main page.