2

Specifications

Function

Test Current

24 Hour

90 Day

1 Year

Temperature

Maximum

23 °C ± 1 °C

23 °C ± 5 °C

23 °C ± 5 °C

Coefficient

per Lead

0 °C—18 °C

Resistance

28 °C—55 °C

dc Voltage

0.0025 + .0020

0.0040 + .0020

0.0050 + .0020

0.0004 + .0001

0.0025 + .0002

0.0040 + .0002

0.0050 + .0003

0.0004 + .0001

100.00000 mV

0.0015 + .0003

0.0030 + .0004

0.0040 + .0004

0.0004 + .00006

1.0000000 V

0.0010 + .0003

0.0025 + .0004

0.0035 + .0004

0.0004 + .00004

10.000000 V

0.0002 + .0001

0.0020 + .0004

0.0030 + .0004

0.0001 + .00002

0.0010 + .0004

0.0025 + .0005

0.0035 + .0005

0.0004 + .00005

1.0000000 Ω

10 mA

0.0015 + .0002

0.0050 + .0002

0.0070 + .0002

0.0005 + .00002

1 Ω

10.000000 Ω

10 mA

0.0015 + .0002

0.0040 + .0002

0.0060 + .0002

0.0005 + .00001

1 Ω

100.00000 Ω

10 mA

0.0015 + .0002

0.0040 + .0002

0.0060 + .0002

0.0005 + .00001

10 Ω

1.0000000 KΩ

1 mA

0.0015 + .0002

0.0040 + .0002

0.0060 + .0002

0.0005 + .00001

100 Ω

10.000000 KΩ

100 µA

0.0015 + .0002

0.0040 + .0002

0.0060 + .0002

0.0005 + .00001

1 KΩ

100.00000 KΩ

10 µA

0.0015 + .0003

0.0040 + .0004

0.0060 + .0004

0.0005 + .00002

1 KΩ

1.0000000 MΩ

5 µA

0.0020 + .0003

0.0050 + .0004

0.0070 + .0004

0.0006 + .00003

1 KΩ

Low Power

1.0000000 Ω

10 mA

0.0015 + .0002

0.0050 + .0002

0.0070 + .0002

0.0005 + .00002

1 Ω

10.000000 Ω

10 mA

0.0015 + .0002

0.0040 + .0002

0.0060 + .0002

0.0005 + .00001

1 Ω

100.00000 Ω

1 mA

0.0015 + .0002

0.0040 + .0002

0.0060 + .0002

0.0005 + .00001

10 Ω

1.0000000 KΩ

100 µA

0.0015 + .0002

0.0040 + .0002

0.0060 + .0002

0.0005 + .00001

100 Ω

10.000000 KΩ

10 µA

0.0015 + .0004

0.0040 + .0004

0.0060 + .0004

0.0005 + .00001

1 KΩ

100.00000 KΩ

5 µA

0.0015 + .0012

0.0040 + .0015

0.0060 + .0015

0.0005 + .00003

1 KΩ

1.0000000 MΩ

5 µA

0.0020 + .0003

0.0050 + .0004

0.0070 + .0004

0.0006 + .00003

1 KΩ

Voltage Limited

10.000000 Ω

1 mA

0.0020 + .0002

0.0050 + .0002

0.0070 + .0002

0.0005 + .00002

1 Ω

100.00000 Ω

100 µA

0.0025 + .0002

0.0050 + .0002

0.0070 + .0002

0.0005 + .00002

5 Ω

Channel 1 / Channel 2 (dcV Ratio)

Ratio Error in % = Channel 1 accuracy in % + Channel 2 accuracy in %

Channel 1-Channel 2 (dcV Difference)

Difference Error = Channel 1 (% of reading + % of range) + Channel 2 (% of reading + % of range)

Temperature

(resolution = 0.001 °C)

SPRT Probe Accuracy + 0.003°C

RTD

RTD Probe Accuracy + 0.05°C

Thermistor

Thermistor Probe Accuracy + 0.1°C

Thermocouple Probe Accuracy + 0.2°C

Observation Period

Range

2-Minute

2-Minute

24-Hour

RMS

Peak-Peak

Peak-Peak

Noise

Noise

Noise

1 mV

1.3 nVrms

8 nVpp

12 nVpp

10 mV

1.5 nVrms

10 nVpp

14 nVpp

100 mV

10 nVrms

65 nVpp

80 nVpp

1 V

100 nVrms

650 nVpp

800 nVpp

10 V

450 nVrms

3 µVpp

3.7 µVpp

100 V

11 µVrms

75 µVpp

90 µVpp

Source

Analog

Digital

Resistance

Noise

Filter

Filter

0 Ω

1.3 nVrms

Off

Med

100 Ω

1.7 nVrms

Off

Med

1k Ω

4 nVrms

Off

Med

10k Ω

13 nVrms

Off

Med

100k Ω

41 nVrms

On

Med

1M Ω

90 nVrms

On

Slow

1 Specifications are for Channel 1 or Channel 2, after 2-hour warm-up, resolution

at 7.5 digits (100 NPLC), with FILTERS off. RESISTANCE specifications are for

4-wire Ohms or 2-wire ohms using Null. Without Null, add 0.2 Ohms additional

error in 2-wire Ohms function. For Analog Filter ON, add 0.002% of reading.

2 20% overrange on all ranges except 5% on Voltage Limited Resistance.

3 After using Math Null. If Null is not used add 100 nanoVolts.

4 Channel 1 only.

5 Channel 1 only. Resistance measurements, for NPLC <1, add 160 µΩ rms

noise.

6 Voltage limit can be set to 20 mV (default), 100 mV, or 500 mV. Measured

resistance plus Channel 1 HI and LO lead resistance is limited to 10.5 Ω on the

10 Ω range and 105 Ω on the 100 Ω range.

7 For 25 Ω SPRT with triple-point of water check within the last 4 hours.

Without the triple-point of water check, add 0.013°C for 24 hours, add 0.035°C

for

90 day, and add 0.055°C for 1 year specifications.

8 For fixed reference junction. Add 0.3ûC for external reference junction, add

2.0ûC for internal reference junction.

9 After a 2-hour warm-up, ± 1ûC, 6.5 digits (10 PLC) with Analog Filter Off and

Digital Filter Medium (50 reading average).

2-minute rms and 24-hour noise typical. For measurements using 0.02 or 0.2

NPLC, add 800 nV rms noise.

10 Typical noise behavior for Ch 1 or Ch 2, after 2 hour warm-up, 6.5 digits (10

PLC), 2 minute observation period on 1 mV range. For peak-to-peak noise, mul-

tiply rms noise by 6.