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Simplify Your Procedures. Simplify Your Work.
Never before has DC voltage calibration and/or verification of DVMs and calibrators been so easy or reliable. Measurements International’s recently launched 1340A is the metrology industry’s leading choice thanks to its user-friendly design, backed with the best features for optimal performance.
Model 1340A is another fine example of MI’s history and world-leading experience in resistance. We invite metrologists and calibration technicians in national, military and third-party calibration laboratories to compare the performance of the 1340A against any products on the market today.
| Feature | Benefit |
| 10:1, 100:1, and 1000:1 reference divider output to 1100 V. Accuracy divides input voltage by 10, 100, 1000, or 10000. Maximum input voltage is 1100 V. | Extreme precision to compare direct voltage levels of various sources to a 10 V voltage reference standard like a 1330A, 732B or 732C. |
| Industry-leading specifications requires no Self-Alignment or Calibration prior to use. | Customers no longer need to self-align or calibrate prior to each use. Saves time and money and frustration! |
| Utilizes a special design network of high precision resistors mounted in a temperature-controlled chamber. | Shields divider resistors from outside noise and provides temperature stability to improve performance. |
| Front panel direct connection to calibrator; divider output connection to DVM for testing; both done with supplied cables. | Ease of use, saves time and money. |
| Internally mounted temperature sensor PT100. | Users can connect to front panel and monitor internal oven. |
| New special hand-selected resistors and configuration. | Lengthy, self-alignment no longer required to create divider network. |
| Calibration of divider performed directly against a 1330A, 732B or 732C reference. | Industry-leading advancement in the DC voltage divider commercial products which delivers exceptional performance. |
Figure 1. Example: 1000 V in divided to 10 V out to be measured
An intuitive and easy to use instrument
Figure 2. The above diagram illustrates using a 1330A, 732B or 732C reference in the connection sequence. A DVM can be used as a NULL detector to determine the offset of the 57XX series on the 10:1 and 100:1 ratio.
Figure 3. 24 Hour Stability of Temperature Chamber
| Ratio Range | Stability / 30 Days | Maximum Input Voltage |
|---|---|---|
| Stage 1 10:1 | 0.3 | 10 V |
| Stage 2 10:1 | 0.3 | 10 V |
| Stage 3 10:1 | 0.3 | 110 V |
| Stage 4 10:1 | 0.3 | 1100 V |
| Uncertainty | ||
| 100:1 | √(R12 + R22) | |
| 1000:1 | √(R12 + R22+ R32) | |
| 10000:1 | √(R12 + R22+ R32 + R42) | |
| Internal Temperature Stability | ± 0.1°C Over a 1 Year Period | |
| Ambient Temperature Range | 23 °C ± 5 °C | |
| Initial Warm-up Time | 24 Hours | |
| Ambient Humidity Range | 20 to 90 % Non-condensing | |
| Storage | -50 °C to +50 °C | |
| Self-Alignment | Not Required | |
| Isolation to Earth | > 1012 Ω | |
| Direct Cable to 57XX | Provided | |
| PT 100 Cable | Provided | |
| Warranty | Standard 2 Year Parts & Labour | |
