Cropico RS3
4 terminal construction, high stability resistance standard with wide range
Cropico RS3 Resistance Standard
| Model | Value | Uncertainty of Adjustment @20°C | Uncertainty of Certification | Temp Coeff Typical 15 to 20°C | Stability Over 1 Year |
|---|---|---|---|---|---|
| RS3/001 | 0.0001Ω | 0.02% | ±200ppm | 20ppm/°C | 0.0025% |
| RS3/001 | 0.001Ω | 0.01% | ±50ppm | 25ppm/°C | 0.0025% |
| RS3/01 | 0.01Ω | 0.01% | ±25ppm | 10ppm/°C | 0.001% |
| RS3/02 | 0.02Ω | 0.01% | ±50ppm | 10ppm/°C | 0.001% |
| RS3/05 | 0.05Ω | 0.01% | ±50ppm | 10pm/°C | 0.001% |
| RS3/0.1 | 0.0.1Ω | 0.003% | ±25ppm | 10ppm/°C | 0.001% |
| RS3/1 | 1Ω | 0.003% | ±25ppm | 10ppm/°C | 0.001% |
| RS/10 | 10Ω | 0.003% | ±25ppm | 10ppm/°C | 0.001% |
| RS3/25 | 25Ω | 0.005% | ±25ppm | 10ppm/°C | 0.001% |
| RS3/50 | 50Ω | 0.005% | ±25ppm | 3ppm/°C | 0.001% |
| RS3/100 | 100Ω | 0.003% | ±25ppm | 3ppm/°C | 0.001% |
| RS3/250 | 250Ω | 0.005% | ±25ppm | 3ppm/°C | 0.001% |
| RS3/1K | 1kΩ | 0.003% | ±25ppm | 3ppm/°C | 0.001% |
| RS3/10K | 10kΩ | 0.003% | ±25ppm | 3ppm/°C | 0.001% |
| RS/100K | 100kΩ | 0.003% | ±25ppm | 3ppm/°C | 0.001% |
| RS/1M | MΩ | 0.01% | ±25ppm | 3ppm/°C | 0.002% |
| Model | Dissipation Max in Air Watts | Dissipation Max in Oil Watts | Max. I in Air (Amps) | Max. I in Oil (Amps |
|---|---|---|---|---|
| RS3/001 | 1 | 4 | 100 | 200 |
| RS3/001 | 1 | 4 | 32 | 60 |
| RS3/01 | 1 | 4 | 10 | 20 |
| RS3/02 | 1 | 4 | 7 | 14 |
| RS3/05 | 1 | 4 | 4.5 | 9 |
| RS3/0.1 | 1 | 4 | 3 | 6 |
| RS3/1 | 2 | 10 | 1.4 | 3 |
| RS/10 | 2 | 10 | 0.44 | 1 |
| RS3/25 | 1 | 10 | 0.2 | 1 |
| RS3/50 | 1 | 10 | 0.1 | 0.3 |
| RS3/100 | 1 | 10 | 0.1 | 0.3 |
| RS3/250 | 1 | 10 | 0.1 | 0.1 |
| RS3/1K | 1 | 10 | 0.03 | 0.030 |
| RS3/10K | 1 | 10 | 0.01 | 0.03 |
| RS/100K | 1 | 1 | 0.003 | 0.003 |
| RS/1M | 1 | 1 | 0.0002 | 0.0002 |
*Special values can be made to order
| Value in ohms | Typical time constant | The resistance standards type RS3 were primarily designed as DC standards, however values above 0.1 ohm are non inductively wound and the adjacent AC characteristics are typical |
|---|---|---|
| 1Ω | + 0.34μH/Ω | |
| 10Ω | + 0.18μH/Ω | |
| 100Ω | + 0.03μH/Ω | |
| 1kΩ | + 0.04μH/Ω | |
| 10kΩ | + 0.6μH/Ω |
Dimensions
160mm high x 90mm diameter approx
Top Panel
Bakelite marked with the value, class designation and serial number
Mass
0.9kg approx
Case
Light alloy, black anodised to give maximum heat radiation Thermometer Tube: Slotted extending the length of the resistance element
Label
Each standard is fitted with a label that describes its characteristic and operating parameters
Resistance Elements
Manganin or Zeranin depending on the value. 100 ohm, 1, 10 and 100 kilo ohm low inductance winding on brass formers with PTFE insulation. 0.1, 1 and 10 ohm bifilar winding on cylindrical brass formers with PTFE insulation. 0.01, 0.001, and 0.0001 ohm resistance material in the form of straight rods or loops supported on 12mm brass conductors
Terminals
Potential — Copper 4mm Current — Brass
Maximum Continuous Working Voltage
70Vdc / 33vrms
Request a Quote
Downloads
Do you own this product?
Register your Cropico RS3 today to activate your warranty and to stay up to date with the latest product updates, news and support information.
Similar Products
Need Help?
Explore our support knowledge base
I'd like to talk to a sales advisor
Sign up to our Newsletter.
Stay up to date with the latest industry and product news, as well as our free educational content such as webinars and our expert guides.
Close