Description:
The esi SR1030 provides the part-per-million (ppm) resistance transfer accuracies and the long-term stabilities you need in today’s modern metrology and calibration laboratories.
The esi SR1030 Resistance Transfer Standards are extremely accurate, stable resistance standards that are used on the bench and are light enough to carry with you to remote calibration, repair, production or R&D sites. The esi SR1030 consists of six transfer standards in decades from 1 Ω to 100 kΩ per step. Each decade standard consists of 12 nominally equal resistors matched initially to within 10 ppm. In addition, each decade standard produces three decade values – 10 resistors in series (10R), 10 resistors in parallel (R/10), and nine of the 10 resistors in series/parallel (R). By making a 1:1 comparison with the tenth resistor, you can resolve a series-parallel value to better than 1 ppm.
Features:
• Part-per-million transfers from 100 mΩ to 1 MΩ
• Thermally isolated by oil for maximum short-term thermal stability
• Excellent long-term stability; ±20 ppm for 6 months
• Accuracy calibrated to ±10 ppm
• Seven decades of resistance transfer-1, 10, 100, 1 k, 10 k and 100 kΩ/step
• 100:1 resistance transfers using series, parallel, series/parallel connection
• Calibration readings traceable to the NIST are provided
Nominal Values (per step)
1, 10, 100, 1 k, 10 k and 100 kΩ
Transfer Accuracy
100:1 ±(1 ppm + 0.1 μΩ) at parallel value, using SB103, PC101, and SPC102 as necessary
10:1 ± (1 ppm + 0.1 μΩ) at series or parallel value, using SB103, PC101, and SPC102 as necessary
Initial Adjustment
±20 ppm of nominal value matched within 10 ppm
Calibration Accuracy
±10 ppm, NIST traceable
Calibration Conditions
23 ±1 ºC, low-power, four-terminal measurement, initial calibration readings are provided
Long-Term Resistance Stability
±20 ppm of nominal for 6 months
±35 ppm for 2 years, typical
±50 ppm for 5 years, typical
Temperature Coefficient
1 Ω ±15 ppm/ºC, matched within 5 ppm/ºC
10 Ω ±1 ppm/ºC
100 Ω to 100 kΩ ±5 ppm/ºC, matched within 3 ppm/ºC
Power Coefficient (typical)
1 Ω ±0.3 ppm/mW/resistor
10 Ω ±0.02 ppm/mW/resistor
100 Ω to 100 kΩ ±0.1 ppm/mW/resistor
Maximum Power Rating
Single Step 1W/step
10 resistors 5W/distributed
Leakage Resistance
1 Ω to 10 kΩ >1012 Ω terminal to case
100 kΩ >1013 Ω terminal to case
Breakdown Voltage
1500 volts peak to case
Oil Bath
Type Mineral oil, Penreco Drakeol #9, white
Insulation
Resistance Typically 1014 Ω cm
Quantity Approximately 0.5 gallons
Dimensions (with oil)
Height 120 mm (4.7 in)
Width 117 mm (4.6 in)
Depth 335 mm (13.2 in)
Weight 6.35 kg (10 lb)
Operating Environment
Temperature 22.8 ºC ±3.3 ºC (73±6 ºF)
Humidity 20 to 50 % relative humidity
Safe Operating Environment
Temperature 0 ºC to 50 ºC
(32 ºF to 126 ºF)
Humidity 15 to 80 % relative humidity