Mine Design Technologies
MDT - Model NTC3K -ThermistorString
The ThermistorString-NTC3K from Mine Design Technologies (MDT) is a rugged, versatile and easy-to-install thermistor string that is fully customizable and manufactured to client requirements.
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Each ThermistorString-NTC3K consists of 3 sections:
- Cable with up to 19 temperature sensors (thermistors) positioned along its length at user-specified intervals
- Lead wire – section of cable between the last node (temperature sensor location) and the termination point/free end
- Free end – supplied with bare wires (if the client intends to connect the thermistor wire to a data logger) or a client-specified connector
The MDT ThermistorString-NTC3K is ideally suited to the task of ground temperature monitoring in underground mines.
Electrical Specifications:
- Number of Nodes: 1-19
- Nominal Resistance (at 25°C): 3000?
- Resolution: ±0.2°C
- Accuracy: ±0.5°C
- Temperature Range: -40°C to +80°C
- Resistance/Temperature Curve: “J”
- Beta “β” Coefficient (0° to 50°C): 3892°K
Materials:
- Cable Jacket: PVC or Polyurethane
Features and Benefits
- Up to 19 thermistors per string
- Custom manufactured to user requirements, client can specify:
- Cable length
- Number of thermistors (up to 19) and the position of each on the string
- Length of Lead Wire (extension cords and additional lengths of lead wire are available)
- Supplied with either bare wires (for hard-wiring to dataloggers) or connectors of the client’s choice at the termination point
- Can be supplied with extra leadwire protection (white poly tube or liquid tight conduit)
- Rugged and easy to install
Applications
- Monitoring of ground temperature in the area adjacent to and surrounding working faces, tunnels and shafts of underground mines