Valhalla Scientific 2724/2724A Resistance Standard Calibrator - NH19

Description

Valhalla Scientific 2724/2724A Resistance Standard Calibrator - NH19
The 2724A Resistance Standard is a fully variable programmable resistance standard that provides over 10 million resistance values ranging from 100 micro-ohms to 11 gigohms. The unit accomplishes this feat by using microprocessor technology coupled with an extremely high resolution A/D converter to "synthesize" the programmed value of resistance. Basic Accuracy to 7 ppm Short Term Stability to 2 ppm (10 ppm-1 yr) Calibrates 7 1/2 digit DMMs Two/Four Terminal.
Specifications
Output Configuration
Selectable 2-wire or 4-wire low thermal EMF terminals; front and rear provided in parallel
Leakage Current
±2pA ±0.2pA/°C
Maximum Noise and Thermals
(4-wire mode)
DC to 10Hz
10Hz to 10kHz
Standard Mode
±4µV
±40µV
Fast Mode
±30µV
±300µV
CPR Mode
±2µV
±20µV
Dimensions
89mm (3.5")H x 432mm (17")W x 432mm (17")D
Weight
7.2 kg (16 lb) net, 10.5kg (23 lb)
Power Requirements
115 or 230VAC ±10% @ 50 to 400Hz; 50VA max
Temperature
Operating: 0°C to 50°C Storage: -30°C to 70°C
Humidity
Up to 70% RH at 40°C (non-condensing)
Resistance
Range (Ω)
Accuracies Resistance (ppm of setting)
Stability
(DC to 1Hz)
90 Days
180 Days
360 Days
24 Hour
1 Year
0 to 120
±7ppm ±2mΩ
±9ppm ±3mΩ
±11ppm ±4mΩ
±2ppm
±10ppm
.12K to 1.2K
±7ppm ±7mΩ
±9ppm ±9mΩ
±11ppm ±11mΩ
±2ppm
±10ppm
1.2K to 12K
±7ppm ±50mΩ
±9ppm ±63mΩ
±11ppm ±75mΩ
±2ppm
±10ppm
12K to 120K
±7ppm ±500mΩ
±9ppm ±630mΩ
±11ppm ±750mΩ
±2ppm
±10ppm
120K to 1.2M
±12ppm ±5Ω
±15ppm ±7Ω
±18ppm ±9Ω
±2ppm
±10ppm
1.2M to 12M
±20ppm ±50Ω
±25ppm ±63Ω
±30ppm ±75Ω
±2ppm
±10ppm
12M to 120M
±40ppm ±1KΩ
±50ppm ±1.5KΩ
±60ppm ±2KΩ
±500Ω
±50ppm
.12G to 1.2G
±0.1% ±50KΩ
±0.15% ±63KΩ
±0.2% ±75KΩ
±50KΩ
±50ppm
1.2G to 11G
±0.1% ±5MΩ
±0.15% ±6.3MΩ
±0.2% ±7.5MΩ
±5MΩ
±0.05%
This unit is onsite, is setup and we welcome for you to come inspect this unit.
Please email if you have any questions or would like to speak with someone in person. Call Bullseye Calibration in Bloomfield, CT to discuss the machine.
SHIPPING POLICY:
We sell sensitive test and measurement equipment here on Ebay.  We strive for 5-star service, so we invest a great deal of time and care to package all of our items safely for shipment.  This attention to detail means it may take up to 10 days for us to prepare and ship your units out of our facility. We want to support you throughout the transaction and want you to be satisfied, so please to contact us at Bullseye Calibration in Bloomfield, CT with any questions or concerns.  We do out best to ship quickly, but never at the expense of quality delivery.
RETURN POLICY:
All units are being sold "WITH A 30 DAY RIGHT OF RETURN". The auction description is written as a guide, we strongly recommend that you come view and test the units at our facility. Feel free to give us a call at Bullseye Calibration in Bloomfield, CT, and we will help answer any questions that you may have, before you purchase an item. We do not accept returns so please call with any questions that you have BEFORE you bid.