SDI fabsurplus.com is pleased to announce the availability of the following listed used KEITHLEY 487 PICO AMMETER . This KEITHLEY 487 PICO AMMETER is available for immediate sale. Please click on the "Send More Details" button if you'd like to get more details, photos and specifications of this PICO AMMETER and your request will be forwarded to our customer representatives automatically. Crating, refurbishment and delivery can be quoted on request.
|Version:||Electronics Test and Measurement|
|Sales Condition:||as is where is|
|Sales Price (each):||1,999 USD|
Current condition: De-installed, warehoused, crated.
Location: Avezzano, (AQ) 67051 Italy
The Model 487 is designed for measurement of low currents and very high resistances. This instrument incorporates all the capabilities of the 486, and adds a programmable ±500V source. This combination of picoammeter and voltage source provides a powerful high resistance meter and fast picoammeter in one instrument.
The 487 makes current measurements from 10fA to 2mA. Two voltage source ranges are available: a 500V range with 10mV resolution and a 50V range with 1mV resolution. A PRESET button allows the user to toggle between two separate source values.
The 487 sources up to 500V, measures the current with 10fA sensitivity, and then instantly calculates the resistance value, from 500m to 5 1016. The unit displays either current or resistance. Reading inter- vals from 10ms to 1000s can be programmed, simplifying tests that require a predetermined “soak” time.
Two displays, one for current readings and one for voltage sourcing, permit the voltage setting and the measured current to be viewed effective test instruments for performing such tasks as resis- tivity, I-V measurements, component leakage, and insulation resistance. A common test procedure, writ- ten by the American Society of Testing and Materials, D257: D-C RESISTANCE OR CONDUCTANCE OF INSULATING MATERIALS, is easily performed with the 487 or the 6517A.
* When properly zeroed.
MAXIMUM OVERLOAD: 350V peak on nA ranges and 2µA range; 50V peak on 20µA, 200µA, and 2mA ranges. Higher voltage sources must be current limited at 3mA.
INPUT VOLTAGE BURDEN: <200µV (18°–28°C) for inputs <100µA; <2mV for inputs 100µA; 20µV/°C tempera- ture coefficient.
TEMPERATURE COEFFICIENT (0°–18°C & 28°–50°C): ±(0.15 applicable accuracy specification)/ °C.
NMRR: >60dB at 50Hz (LINE 50Hz integration) or 60Hz (LINE 60Hz integration).
Range: ±2V for full range input (non-inverting).
Accuracy: ±(2.5% + 3mV); resistive loads >2k; 18°–28°C.
Impedance: <100, DC–2kHz.
RANGING: Automatic or manual.
AUTORANGING TIME: <200ms to final range (analog filter OFF).
VOLTAGE SOURCE (487 only):
RANGE STEP (1 Year) NOISE COEFFICIENT
(maximum SIZE 18°–28°C (p-p)*** 0°–18°C & value) (typical) ±(%setting+offset) 0.1–10Hz 28°–50°C
±505.00 V 10 mV 0.15 + 40 mV <1.5 mV 80 ppm + 2 mV/°C
±50.500 V 1 mV 0.1 + 4 mV <150 µV 50 ppm + 200µV/°C
*** With LO terminal connected to chassis.
SELECTABLE CURRENT LIMIT: 2.5mA ±0.5mA or 25µA ±5µA.
WIDEBAND NOISE: <30mV p-p 0.1Hz to 20MHz.
TIME STABILITY: ±(0.003% + 1mV) over 24 hours at constant temperature.
OUTPUT RESISTANCE: <2.5.
V/I OHMS (487 only)
Used with voltage source; resistance calculated from voltage setting and measured current. V/I OHMS accuracy equals voltage source accuracy plus ammeter accuracy. Typical accuracy better than 0.6% for readings between 1k and 1T.
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Any offer by you to purchase the equipment described on this page shall be subject to our standard terms and conditions of sale.
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