The 57LFC System Calibrators are verified and calibrated at the factory prior to shipment to ensure they meet the accuracy standards required for all certified calibration laboratories. By calibrating to the specifications in this chapter, you can maintain the high performance level throughout the life of your calibrator.
Specifications are valid after a warm-up period of twice the time the calibrator has been turned off, up to a maximum of 30 minutes. For example, if the calibrator has been turned off for five minutes, the warm-up period is ten minutes.
To ensure the validity of the specifications, a dc zeros calibration must be performed at least every 15 days. If more than 15 days elapse without a dc zeros calibration a warning message appears. This procedure does not require any external equipment or connections and takes approximately 5 minutes to complete.
General Specifications Factory set IEEE488 address 4
Warm-up Time Twice the time since last warmed up, to a maximum of 30 minutes
Temperature Performance Operating: 0 to 50 °C
Temperature Coefficient Temperature Coefficient for temperatures outside tcal ±5 °C is 10% of the 1-year spec per °C.
Operating: <95% to 43 °C (non-condensing), <40% to 50 °C.
Storage: <95%, non-condensing
Operating: 3,050 m (10,000 ft) maximum
Non-operating: 12,200 m (40,000 ft) maximum
Safety Designed to comply with IEC 61010-1 2000-1; ANSI/ISA-S82.01-1994;
CAN/CSA-C22.2 No. 1010.1-92 Analog Low Isolation 20 V
EMC Designed to comply with IEC 61326-1 2000-11 (EMC) Class A Criteria
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