HSTH Hermetically Sealed Thermistor Sensors
Hermetically Sealed Flexible Thermistor Sensors PFA Jacketed
Supported Applications
The Omega HSTH-44000 Series consists of hermetically sealed, flexible thermistor sensors designed for temperature measurement in wet and corrosive environments. The PFA-jacketed construction provides high resistance to chemicals and oils, making the series suitable for applications requiring easy sterilization, such as food processing.
Operating Conditions & Performance
The HSTH-44000 Series operates across a temperature range of -80 to 150°C (-112 to 302°F). The sensor element is hermetically sealed within the first 1" of the probe, with a tip diameter ranging from 2.3 to 2.5 mm (0.090 to 0.100"). This small physical size contributes to fast temperature response.
Performance specifications include an interchangeability accuracy of ±0.1°C @ 0 to 70°C for all standard resistance values listed in the series documentation.
Configuration Options
The series is configurable across three primary thermistor resistances and multiple cable lengths, with options for electrical termination styles.
• Sensor Resistance: Available in 2252 Ω @ 25°C (code '3'), 5000 Ω @ 25°C (code '4'), or 10,000 Ω @ 25°C (code '1').
• Cable Construction: Features 26 AWG stranded cable with PFA insulation and jacketing.
• Cable Lengths: Standard lengths include 1 m (40"), 2 m (80"), and 3 m (120"). Custom lengths greater than 3 m are available by modifying the model number suffix to reflect the desired length in inches.
• Electrical Connections: Stripped leads are standard. A phone plug connector is an optional configuration, indicated by adding '-PP' to the end of the model number.
The series supports accessory integration with OSTW-U-MF connectors and compatibility with handheld thermometers such as the 450-ATH or DP25-TH Series meters/controllers.
Key Product Differences
Variants within the HSTH-44000 series are distinguished by their resistance value and cable length, encoded directly into the model number format: HSTH-4403X-YY. The 'X' digit denotes the specific thermistor resistance (1 for 10,000 Ω, 3 for 2252 Ω, or 4 for 5000 Ω), while the 'YY' digits indicate cable length in inches. Models ending with '-PP' include the optional phone plug connector.
- Available in 3 Standard Resistance Values: 2252 Ohms, 5000 Ohms or 10,000 Ohms at 25°C.
- Interchangeability: ± 0.1°C Between 0 and 70°C.
- Temperature Range -80 to 150°C (-110 to 302°F)
- Available in Standard Lengths of 40, 80 and 120 Inches (1, 2 and 3 Meters).
| Accuracy | ± 0.1 °C (± 0.18 °F) |
| Insulation | PFA |
| Insulation Note | 1, 2, or 3 m (40, 80, or 120") of 26 AWG Stranded PFA Insulated and Jacketed Cable with Stripped Leads Standard |
| Number of Wires | 2 |
| Probe Type | Hermetically Sealed Thermistor Sensors |
| Process Temperature, Max | 150 °C |
| Process Temperature, Min | -80 °C |
| Series ID | HSTH-44000 |
| Temperature Sensor Type | Thermistor |
| Tip Diameter, Max | 0.1 in |
| Tip Diameter, Min | 0.09 in |
| Wire Gauge | 26 AWG |
| Wire Type | Stranded |