The 109SS thermistor can survive temperatures up to 100°C, but the overmolded joint and cable should not be exposed to temperatures hotter than +70°C.
Water Temperature
The sensor can be submerged to 46 m (150 ft) or 63 psi. Please note that the 109SS is not weighted. Therefore, the installer should either add a weighting system or secure the sensor to a fixed, submerged object, such as a piling.
Soil Temperature
The 109SS is suitable for shallow burial only. Placement of the sensor’s cable inside a rugged conduit may be advisable for long cable runs—especially in locations subject to digging, mowing, traffic, use of power tools, or lightning strikes.
Benefits and Features
- Designed for harsh, corrosive environments
- Fast response time
- Wide temperature measurement range
- Easy to install or remove
- Compatible with most of our current and retired data loggers
The 109SS is a rugged, accurate probe that measures soil or water temperature from -40° to +70°C. The 109SS consists of a thermistor encased in a sheath made from grade 316L stainless steel. The rugged stainless-steel sheath protects the thermistor, allowing you to bury or submerge the 109SS in harsh, corrosive environments. This probe also has a fast time response, and it can be easily interfaced with our data loggers.
- 109SS Stainless Steel Temperature Probe is measures temperature in harsh, corrosive environments
- Thermistor sheathed in a stainless-steel casing
- Maintains a fast response time
- Measures temperatures from -40° to 70°C
- Thermistor can operate in temperatures up to 100°C, however, the overmolded joint and cable should not be exposed to temperatures greater than 70°C.
| Output | Analog |
| Operating Temperature Range | -40° to +70°C |
| Accuracy |
|
| Maximum Submergence | 45.7 m (150 ft) or 434 kPa (63 psi) |
| Temperature Measurement Range | -40° to +70°C |
| Thermistor Temperature Survival Range | -50° to +100°C |
| Overmolded Joint and Cable Temperature Survival Range | -50° to +70°C |
| Interchangeability Error |
|
| Steinhart-Hart Equation Error | ≤ 0.02°C (-40°) |
| Time Constant in Air |
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| Sensor Description | Micro-BetaCHIP Probe 10K3MCD1, 0.5 mm (0.018 in.) diameter, 10 kohm at 25°C |
| Cable Description | 0.56 cm (0.22 in.) diameter with Santoprene jacket |
| Cable/Probe Connection | “ATUM” heat shrink, “Macromelt” overmolded joint |
| Stainless-Steel Sheath Diameter | 0.16 cm (0.063 in.) |
| Stainless-Steel Sheath Length | 5.84 cm (2.3 in.) |
| Overmolded Joint Diameter | 1.02 cm (0.40 in.) |
| Overmolded Joint Length | 4.24 cm (1.67 in.) |
| Weight | 0.1 kg with 3.2 m cable (0.2 lb with 10.5 ft cable) |
