100 Series Standards
- STABLE OVER TIME
- LOW TEMPERATURE COEFFICIENTS
- IMMUNE FROM HUMIDITY & PRESSURE CHANGES
- FOR USE IN AIR AT 23 °C
- AVAILABLE FROM 1 Ω TO 10 MΩ
Ohm-Labs' 100 series standards are designed for laboratory or on-site calibration use. Their low coefficients of temperature allow them to be used in a variety of environments without loss of accuracy. They are immune from changes in barometric pressure and relative humidity, and are not affected by moderate vibration or shock. They display low reactance, allowing their use as both DC or AC standards.
All models are housed in a rugged, die-cast aluminum case. Internal shock-absorbing construction reduces the possibility of shifts in value due to vibration or impact. Connections are made via gold plated tellurium copper low thermal emf binding posts, which accept bare wire, spade lugs or banana plugs.
ISO17025 accredited, traceable calibration, including temperature characterization, is included.
All models are available with an optional temperature sensor bonded to the resistance element. Decade and thermometry values are standard. Other resistance values are available on request.
High resistance standards in this line are available in a guarded construction. Below one ohm, please see our 1000 series low resistance standards. For a complete set of this type of standard in a temperature stabilized enclosure, see our new Multiple Resistance Standard.
| Model | Ohms | Tolerance (ppm) |
Stability 12 mo |
TCR 18-30 °C |
Nominal |
| 100 | 1 | <3 | <3 | <0.2 | 100 mA |
| 101 | 10 | <3 | <3 |
<0.2 | 30 mA |
| 101-T | 25 | <3 | <3 | <0.2 | 20 mA |
| 102 | 100 | <3 | <3 | <0.2 | 10 mA |
| 142 | 400 | <5 | <3 | <0.2 | 3 mA |
| 103 | 1 K | <3 | <3 | <0.2 | 3 mA |
| 104 | 10 K | <3 | <3 | <0.2 | 1 mA |
| 105 | 100 K | <5 | <5 | <0.3 | 0.3 mA |
| 106 | 1 M | <10 | <10 | <0.5 | 100 V |
| 107 | 10 M | <20 | <10 | <1.0 | 300 V |
| For special values, use the below examples | |||||
| 11.90 | 1.9 Ohms | Stability and coefficients are similar to above models. | |||
| 13.52 | 350 Ohms | ||||
| 143 | 4000 Ohms | ||||
| 13.36 | 3.333 Meg | ||||
Notes
- Stated accuracy is at time of manufacture, at 10 mW power.
- 18-30 °C TCR temperature coefficient is ppm (μΩ / Ω), referenced to 23 °C.
- Hysteresis: 15-30 °C <0.1 ppm; 0-40 °C <2 ppm
- Calibration uncertainty (at 23 °C) 1-110 Ω <1.0 ppm,
110 Ω -100 K <1.5 ppm, 1 M <5 ppm, 10 M <15 - All resistance standards carry a five year warrantee
Accessories
- Installed temperature sensor
- Transit case
