# Fluke Calibration 752A Reference Divider (Pre-Owned) # Fluke Calibration 752A Reference Divider (Pre-Owned) ## Key Features At A Glance - 10:1 and 100:1 divider outputs with ratio uncertainties of 0.2 ppm and 0.5 ppm respectively - Built-in calibration bridge enables full self-calibration in approximately five minutes using only a stable source and null detector — no external standards required - Dynamic Resistor Matching compensates for long-term changes in divider resistor values - Integrated MODE switch reconfigures the system for 0.1 V, 1 V, 10 V, 100 V, and 1000 V comparisons against a 10 V reference without manual lead changes - Temperature coefficient of ratio < ±1 ppm/°C across the full operating range; typical 0.1 ppm/°C from 15 °C to 30 °C - Maximum input voltage of 1100 V on the 100:1 range and 200 V on the 10:1 range - Compliant with ANSI C39.5 (1980) and IEC 348 2nd edition (1978) The Fluke 752A Reference Divider is a precision ratio standard offering two divider outputs — 10:1 and 100:1 — with output uncertainties of 0.2 ppm and 0.5 ppm respectively. It sets a reference standard for ratio accuracy and ease of use in the calibration laboratory, providing a stable, self-calibrating means of dividing a known voltage with traceable confidence. The 752A is used as a stand-alone divider, where an input applied to the INPUT terminals is switched by the MODE switch to either the 10:1 or 100:1 position with output available at the OUTPUT terminals. When augmented with a 10 V reference source such as the Fluke 732B and a null detector, the resulting system becomes a 5-decade cardinal point voltage calibrator with facilities for comparing input voltages of 1000 V, 100 V, 10 V, 1 V, and 0.1 V to the 10 V reference. The MODE switch reconfigures the system for each of these ranges with no manual lead changes necessary. ## Brand Heritage Fluke Calibration is the precision metrology division of Fluke Corporation, which has operated as part of Fortive Corporation since Fortive's 2016 spin-off from Danaher Corporation. The 752A Reference Divider is documented and supported under the Fluke Calibration brand. ## Product Core & Specifications Specification Value Ratio Uncertainty (18 °C to 28 °C, within ±1 °C of calibration temperature, up to 8 hours after calibration) 10:1 ratio, 100 V input 0.2 ppm; Null uncertainty ± 0.5 µV 100:1 ratio, 1000 V input 0.5 ppm; Null uncertainty ± 1.0 µV Temperature Coefficient of Ratio Operating range < ± 1 ppm/°C Typical 15 °C to 30 °C 0.1 ppm/°C Input Resistance 10:1 ratio 380 kΩ ± 1 % 100:1 ratio — Divider 4 MΩ 100:1 ratio — Driver Guard 4 MΩ 100:1 ratio — Total 2 MΩ ± 1 % Maximum Input Voltage 10:1 ratio 200 V (safety only; maximum voltage for best accuracy is 100 V) 100:1 range 1100 V Power Coefficient Effect on Ratio 10:1 ratio < 0.05 ppm of output with 100 V applied 100:1 ratio < 0.3 ppm of output with 1000 V applied Weight Net 8.4 kg (18.5 lb) Shipping 13.6 kg (30 lb) Size Dimensions 60.3 cm L x 22.1 cm W x 19.1 cm H (23.75 in L x 8.69 in W x 7.53 in H) Compliance with Standards Standards ANSI C39.5, 1980. IEC 348, 2nd edition, 1978 Temperature and Humidity Non-operating temperature \-40 °C to +75 °C (humidity not controlled); 0 °C to 50 °C (95 ± 5 % RH max, non-condensing) Operating temperature 0 °C to 40 °C (75 ± 5 % RH max); 40 °C to 50 °C (45 ± 5 % RH max), non-condensing Altitude Non-operating 0 to 12,000 m (40,000 ft) Operating 0 to 3,050 m (10,000 ft) Vibration Standard Per MIL-T-288800C, Type III, Class 5, Style E **Important:** Maximum input voltage at the 10:1 ratio is 200 V (safety rating only); the maximum voltage for best accuracy at the 10:1 ratio is 100 V. Maximum input voltage at the 100:1 ratio is 1100 V.**Important:** Before each use, the 752A is calibrated with only a stable source and a null detector; the procedure takes approximately five minutes and does not require external standards.**Important:** Specifications apply for the lifetime of the instrument over the temperature range of 18 °C to 28 °C, for a temperature variation of less than ± 1 °C from the calibration temperature for up to eight hours following calibration.**Important:** For the 10:1 ratio, the 200 V maximum input rating applies to the safety of the unit only. The maximum input voltage for best accuracy is 100 V.**Important:** Do not apply voltage to OUTPUT terminals (per front-panel warning).**Important:** When used as a 5-decade cardinal point voltage calibrator, the 752A must be augmented with a 10 V reference source (such as the Fluke Calibration 732B) and a null detector; these are not supplied with the 752A.**Important:** The M07-200-603 Full Width Rack Mount Kit requires the 752A to be bolted to an adjacent half-rack-width instrument using four M00-800-523 Dual Mounting Fasteners (included with the kit).Recommended pairing: when used as a 5-decade cardinal point voltage calibrator, the 752A is augmented with a 10 V reference source such as the Fluke 732B and a null detector. The 5440A-7002 Low Thermal EMF Cable Assembly is specifically suited for interconnecting a 752A, a 732B, and a null detector. ## About this used unit - Warranty included - Functional verification included - Note that unnecessary accessories may not be included (contact Test Architect to confirm). **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 0.0 USD - 910.0 USD - **Vendor:** Fluke Calibration - **Type:** Cal Kit - **Tags:** Fluke, Manufacturers, Other Equipment, product_manual_group_1, Product_used, Standard ## Variants | Variant | Price | Available | |---------|-------|-----------| | None | 0.00 USD | In stock | | NIST Traceable | 490.00 USD | In stock | | NIST Traceable with Full Data | 700.00 USD | In stock | | ISO IEC 17025 Accredited | 910.00 USD | In stock | ## Images - 752A Fluke Standard --- > Source: [ValueTronics](https://valuetronics.com/products/752a-fluke-standard-used) > Updated: 2026-05-30