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KVD-600 KVD-700 KELVIN VARLEY VOLTAGE DIVIDER


KVD 600 Kelvin Varley Voltage Divider.
KVD 700 Kelvin Varley Voltage Divider
These standards grade Kelvin Varley voltage dividers are highly accurate, stable, and linear instruments for use in many applications requiring accurately known voltage or current ratios.
In particular, the KVD series is especially appropriate for use in bridge circuits, providing two arms of a bridge with a very well known ratio. Applications include linearity determination, the measurement of voltage and resistance, and the calibration of voltage, current, and resistance.

KVD-600 KVD-700

 

Our Price: Contact us for pricing
Phone: 253-927-6186
866-318-6186
Fax: 253-927-6189
email: sales@hotektech.com

Equivalent circuit: A Kelvin Varley voltage divider may be thought of as being equivalent to a digital potentiometer. However, it has an additional, but variable, resistance in series with the wiper arm, which goes to zero at the full scale and zero settings. 
This series resistance has no effect in balanced bridge type applications, where these dividers are often used.

Series KVD-600 KVD-700

Calibration:

Requires external calibration.

Self calibrating; has internal oil bath.

Ratio Range: 0 to 1.0 of input. 0 to 1.0 input for 1.0 terminal;
0 to 1.1 of input for 1.1 terminal.
Resolution: 0.1 ppm with 7 decades. 0.1 ppm with 7 decades.

Absolute Linearity:
[Vout/Vin]-S where S
is the dial setting.

±0.5 ppm

±0.1 ppm for S = 0.1 to 1.1;
±0.1(10S)1/3 ppm for S = 0 to 0.1.

Short-Term Linearity
Stability:

0.2 ppm/30 days under standard
laboratory conditions and VIN <100 V.

0.1 ppm/30 days under standard
laboratory conditions and VIN <100 V.

Long-Term Linearity
Stability:

±2.0 ppm of input/year.

±1.0 ppm of input/year for S=0.1 to 1.1;
±(10S)2/3 ppm of input/year for S=0 to 0.1;
Self calibration restores linearity to 0.1 ppm.

Temperature Coefficient
of Linearity:

<±0.2 ppm/°C.

<±0.1 ppm °C for S=0.1 to 1.1;
<±0.1 (10S)2/3 ppm/°C for S=0 to 0.1.

Power Coefficient of
Linearity:

±1 ppm/watt.

<±0.2 ppm of input/W for S=1.1 to 0.1;
<±0.2 (10S)2 ppm of input/W for S=0.1 to 0.

Maximum Input Power: 2.5 watts; 5 watts intermittent. 10 W at 1.0 INPUT; 11 W at 1.1 INPUT.
Maximum Input Voltage: 1000 V

1000 V at 1.0 input terminal;
1100 V at 1.1 input terminal;

Input Resistance: 100 kOhm ±50 ppm.

100 kOhm ±50 ppm at 1.0 INPUT;
110 kOhm
±50 ppm at 1.1 INPUT.

Maximum Output
Resistance:

66 k, determined by shorting across the input and
measuring the resistance across the output terminals.

Terminals:

High quality low thermal emf gold plated tellurium copper binding posts.

Dimensions:
cm

48.3 cm W x 13.3 cm H x 18.5 cm D
(19.0" x 5.25" x 7.3").

5.25" high rack panel; 13.3 H x 48.2 W x 33.0 D
(5.25" x 19.0" x 13.0").

Weight: 4.1 kg (9 lb). 8.2 kg (18 lb).

Please email sales@hotektech.com or call 253-927-6186 if you are interested in a purchase, or
  need additional information.

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