Ohm-Labs 100, 101, 101-T, 102, 104 Instruction Manual

Ohm-Labs, Inc. 611 E. Carson St. Pittsburgh, PA 15203-1021 Tel. [phone] www.ohm-labs.com

100-Series Resistance Standards

Instruction Manual

© 2006-2019 Ohm-Labs, Inc.

Ohm-Labs, Inc. 611 E. Carson St. Pittsburgh, PA 15203-1021 Tel. [phone] www.ohm-labs.com

100-Series Resistance Standards

Instruction Manual

1) General

Ohm-Labs’ 100-Series Resistance Standards are designed as transportable or laboratory references
for maintaining the ohm at levels between one ohm and ten megohms. Based on modern techniques of
processing and construction, each standard is individually manufactured from selected resistance alloy and
is carefully processed for low temperature coefficients of resistance and long term stability. Hermetically
sealed, these standards are highly immune from changes in barometric pressure and relative humidity. All
models are supplied with a traceable report of calibration, including temperature coefficient data. These
standards are recommended for use at an ambient temperature of 23 +/-5 °C.

100-Series Standards are available in decade, thermometry and special values.

2) Specifications

Notes:

Tolerance is accuracy at time of manufacture, at 10 mW power (nominal current)
Temperature coefficient is at 23 +/-5 °C.

Physical:

12.5 x 8 x 8.5 cm (4.9 x 3.15 x 3.25 in.); 1 kg (2 lbs)

Options available:

Installed 10K thermistor with standard dual miniature banana jack
Transit case, foam lined for protection during shipment (holds 4 standards)

Environmental Limits:

0-40°C, 0-95% RH, protect from shock or excessive vibration

Model

Number

Nominal

Resistance

Tolerance

in ppm

Nominal

Current

Maximum

Current

Typical

Coefficients

Initial 12 mo.

Stability

100

1 Ohm

<3

100 mA

1 A

Temperature:

1-10K: <0.2 ppm / °C

100K: <0.3 ppm / °C

1M: <0.5 ppm / °C

10M: <1 ppm / °C

Voltage

< 0.1 ppm / V

Pressure

< 0.1 ppm / kPa

<3 ppm

10110<3

30

100 mA

< 3

101-T

25<310

100

< 3

102

100

<31030

< 3

103

1 K<3310< 3

104

10 K

<313

< 3

105

100 K

<5

0.31< 5

106

1 Meg

<10

0.1

0.3

< 10

107

10 Meg

<20

0.03

0.1

< 10

For non-decade values, specify: (1=100 series)+(multiplier)+(range)

Examples

11.90

1.9

<5

Temperature, voltage &

pressure coefficients, and

stability, similar to above.

12.51

25

<5

142

400

<5