GENERAL

Wide range of values – 1 mΩ to 10 TΩ
Very stable – as low as 10 ppm/yr
ISO-17025 accredited calibration included
3 Year warranty included
Excellent TC – as low as 1 ppm/°C

Any custom resistance value available
Excellent choice for a resistance standard to calibrate DMM’s, Micro-Ohmmeters and Megohmmeters
Combination of multiple resistors in a single housing is available

DESCRIPTION

The SRX and SRC Series are cost effective, stable, laboratory or portable resistance standards.

Their ruggedness and small size plus their low temperature coefficient makes the SRX and Series Resistance Standard ideal for any applications outside of laboratory environment within the temperature range of 18°C to 28°C.

Because of the low temperature coefficient, they require no oil-or-temperature bath. The resistor elements are hermetically sealed to minimize affects of humidity.

The 5-way binding posts are gold plated and constructed of low-thermal emf material. Four binding posts are used for resistance values of 190 kΩ and under; two binding posts and Kel-F washers are used for 1 MΩ and over.

For lower resistances, the SRX series resistance standards are available in values ranging from 1 mΩ to 100 MΩ, with custom values available.

For higher resistances, the SRC series resistance standards are available in values ranging from 190 MΩ to 10 TΩ, with custom values available.

It is possible to maintain the SRX & SRC resistance standards indefinitely. They are reliable due to their closed, rugged design and sealed resistors. The units are resistant to electromagnetic interference (EMI) because of their metal enclosure.

SPECIFICATION

SRX/SRC High Resistance Standard Basic Specifications

Model	Nominal Value (Ω)	Adjustment to Nominal (ppm)	Calibration Uncertainty (ppm)	Stability 1 year (ppm)	Tempco (ppm/°C)	Power Coef.(ppm/mW)
SRX-0.001	0.001 Ω	200	200	50	20	0.1
SRX-0.0019	0.0019 Ω	200	200	50	20	0.1
SRX-0.002	0.002 Ω	200	200	50	20	0.1
SRX-0.01	0.01 Ω	200	100	50	20	0.1
SRX-0.019	0.019 Ω	200	100	50	20	0.1
SRX-0.1	0.1 Ω	200	20	50	20	0.1
SRX-0.19	0.19 Ω	200	20	50	20	0.1
SRX-1	1 Ω	20	10	20	10	0.5
SRX-1.9	1.9 Ω	20	10	20	10	0.5
SRX-10	10 Ω	10	5	10	3	0.15
SRX-19	19 Ω	10	5	10	3	0.15
SRX-50	50 Ω	10	5	10	1	0.05
SRX-100	100 Ω	10	5	10	1	0.05
SRX-190	190 Ω	10	5	10	1	0.05
SRX-1K	1 kΩΩ	10	2	10	1	0.05
SRX-1.9K	1.9 kΩ	10	2	10	1	0.05
SRX-10K	10 kΩ	10	2	10	1	0.05
SRX-19K	19 kΩ	10	2	10	1	0.05
SRX-100K	100 kΩ	10	2	10	1	0.05
SRX-190K	190 kΩ	10	2	10	1	0.05
SRX-1M	1 MΩ	20	5	15	3	0.15
SRX-1.9M	1.9 MΩ	20	5	15	3	0.15
SRX-10M	10 MΩ	20	10	20	5	0.25
SRX-19M	19 MΩ	20	10	20	5	0.7
SRX-100M	100 MΩ	50	15	20	5	1.2
SRC-190M	190 MΩ	0.10%	30	500	25
SRC-1G	1 GΩ	0.50%	100	100	50
SRC-1.9G	1.9 GΩ	0.50%	100	500 Typically 100 ppm after first year	50
SRC-10G	10 GΩ	0.50%	200		50
SRC-19G	19 GΩ	0.50%	500		50
SRC-100G	100 GΩ	0.50%	900		50
SRC-190G	190 GΩ	1%	900		50
SRC-1T	1 T	2%	2500		100
SRC-1.9T	1.9 T	2%	2500	1000	200

SRC-TN T-Network High Resistance Standard Basic Specifications

Model	Nominal Value (Ω)	Adjustment to Nominal (ppm)	Calibration Uncertainty (ppm)	Stability 1 year (ppm)	Tempco (ppm/°C)	Voltage Coef.(ppm/V)
SRC-10T-TN	10 TΩ	1%	750	500 Typically 100 ppm after first year	25	1
SRC-20T-TN	20 TΩ
SRC-50T-TN	50 TΩ
SRC-100T -TN	100 T

SRC Series Maximum Voltage: 5000 V.
Test Conditions: Four-terminal Kelvin measurements, low power, at 23°C; two-terminal for 1 MΩ and over. Initial calibration data traceable to NIST is provided.
Terminals: SRX: Four 5-way binding posts for 4-terminal measurement for 190 kΩ and under; two binding posts for 1 MΩ and over. The binding posts are constructed of tellurium copper for low thermal emf and low resistance. A case ground terminal is also provided. Triax and bnc terminals are also available.
SRC: Additional GUARD terminal is provided.
Dimensions: 8.6 cm H x 10.5 cm W x 12.7 cm D (3.4″ x 4.15″ x 5″).
Transit Case: Optional Model SRC-100 light weight transit case with handle, suitable for transporting and storing two units. The case provides mechanical protection and insulation from temperature changes during transportation or shipping.
Operating Temperature Range: 15 to 30°C.

DATASHEET AND MANUAL

Data Sheet: This document explains the features, options, Specifications and option models for this item.
Product Manual: Specifications and option models for this item. This document contains the technical product manual and guidelines.

ACCESSORIES