WIKA CER6000 Specifications

Standard reference resistor
Model CER6000

Applications

■

Primary standards for voltage and resistance in calibration
laboratories worldwide

■

Calibration reference for resistance and temperature
bridges, such as ohmmeters and AC or DC temperature
bridges

Special features

Calibration

WIKA data sheet CT 70.30

■

High accuracy

■

Excellent long-term stability

■

Low temperature coecient

■

Rugged stainless steel construction

Description

This model is available in two series: CER6000-RR
(reference resistor) and CER6000-RW (standard reference

resistor). The RR series of 4-wire reference resistors oer

high accuracy and stability at an economic cost. Designed

specically for use as a comparison standard for AC

thermometry resistance bridges of the ASL range, the RR
series may also be used in electrical standards laboratories.

In addition to standard xed values, resistors can be supplied
in any value between 1 and 1,000 Ω. Typical applications for

the RR series are as transfer standards or reference source
in temperature calibration or electrical standards laboratories.

Standard reference resistor, model CER6000, 10 Ω

The RW series is made from a specially selected alloy

having a low temperature coecient mounted in a strain-free

manner on formers made from a material of low dielectric
loss but of high mechanical stability.

Prolonged heat treatment of the elements ensures long-term

stability and low temperature coecient of resistance. The

elements are hermetically sealed in stainless steel containers

and lled with dry oil Castrol WOM 14.

WIKA data sheet CT 70.30

Data sheets showing similar products:
Precision thermometer; model CTR5000; see data sheet CT 60.20
Reference thermometer; model CTP5000; see data sheet CT 61.20
DC resistance thermometry bridge; model CTR6000; see data sheet CT 60.30
AC resistance thermometry bridge; model CTR6500; see data sheet CT 60.40
Calibration bath; models CTB9400 and CTB9500; see data sheet CT 46.20

∙ 05/2018

Page 1 of 5

Specications

Reference resistor, model CER6000-RR

Resistance value 1, 10, 25, 100, 300, 400, 500, 1.000 and 10.000 Ω

others on request

Tolerance ±10 ppm

Long-term stability < ±5 ppm per year

Temperature coecient < 1 ppm per °C

Frequency dependence < 1 ppm up to 400 Hz

Permissible ambient conditions

Working temperature 20 °C [68 °F]

Operating temperature 15 ... 40 °C [59 ... 104 °F]

Case

Dimensions Ø = 76 mm, height 114 mm [Ø = 2.99 in, height 4.49 in]

Weight 0.5 kg [1.1 lbs]

Standard reference resistor, model CER6000-RW

Resistance value 10, 25, 100, 400, 1,000 and 10,000 Ω

others on request

Tolerance ±10 ppm

Long-term stability 2 ppm per year (HS version 0.5 ppm per year)

Temperature coecient 2 ppm per °C (HS version 0.5 ppm per °C)

Frequency dependence 1 ppm up to 1,592 Hz

Permissible ambient conditions

Working temperature 20 °C [68 °F]

Operating temperature 15 ... 40 °C [59 ... 104 °F]

Case

Dimensions Ø = 76 mm, height 114 mm [Ø = 2.99 in, height 4.49 in]

Weight 0.7 kg [1.5 lbs]

1) No HS version is available for the resistance values 1 kΩ and 10 kΩ. Furthermore, it must be noted that with the 10 kΩ version the value changes from 2 ppm to 5 ppm.

1)

Certicates

Certicate

Calibration for model CER6000-RR Standard: without

Option: UKAS calibration certicate

Calibration for model CER6000-RW Standard: without

Option: UKAS calibration certicate or NPL calibration certicate DC or DC and AC

Recommended recalibration interval 1 year (dependent on conditions of use)

Approvals and certicates, see website

WIKA data sheet CT 70.30 ∙ 05/2018 Page 2 of 5