 |
|
|
E2M-312-IT1
Suggested applications
Temperature sensing in microwave ovens
Protection of heaters from over-heating
Advantages
Fast response; 25% faster compared to Shibaura’s conventional PTM-312-M12 protecting pipe
Dielectric strength of 1,800V
Easy installation with a single M3 screw
A number of options are available:
Lead wires: a variety of lead wires are available; contact Shibaura for more information (selection must be made from UL Recognized Components)
Protecting pipe: a 15.5mm pipe* is available instead of the standard 10.5mm protecting pipe
Wire connecting section: lengths from 9mm to 55mm are available (*when the 15.5mm pipe is used, the maximum wire length is 50mm)
Connectors and housings: a variety of connectors and housings are available; contact Shibaura for more information (selection must be made from UL Recognized Components, rated at 65℃ or higher)
Insulation tube: from UL Recognized Components, rated VW-1
Locking cable tie: from UL Recognized Components, shrink tube can also be fixed by request
Shape and dimensions:
Lot mark
Indicated in black, using last figures of years and month.
(note: October, November and December are shown as X, Y and Z)
Example: "41" means manufactured in January of 2004
Specifications:
| Resistance | R = 1kΩ ±3% at 200℃ |
| B constant | B = 4537K ±3% (between 100℃ and 200℃) |
| Insulation resistance | Over 100MΩ at 500V DC (room temperature, between protecting pipe and lead wire or connector) |
| Dielectric strength | No failure when 1500V AC is applied for 1 minute (1800V AC for 1 second; cut-off current 0.5mA) |
| Thermal time constant | τ= approximately 60 seconds (in moving air) |
| Thermal dissipation constant | σ= approximately 2.1 mW/℃ (in still air) |
| Recommended power consumption | below 0.35mW |
| Maximum power consumption | 10mW at 25℃ |
| Operating temperature range | -20℃ to +300℃ (from flange to tip of pipe) |
| Storage temperature range | +15℃ to +35℃ (recommended value) |
| Storage humidity range | 25 to 85% relative humidity (recommended value) |
|
 Download R/T table for E2M-312-IT1
Reliability testing: other rating
Normal operations cannot be guaranteed if the following parameters are exceeded
| Mechanical strength tests |
| Lead tensile strength | protecting pipe is fixed; 20N of straight pulling force is gradually applied to lead wires (two wires together), then held for 10 seconds. |
| Lead wire Bending test | protecting pipe is fixed; lead wires are bent 90° to the right for 5 seconds, then 90° to the left for 5 seconds, repeated 5 times. |
| Falling test | Free drop from height of 75cm onto a 15 x 15cm oak board 3cm or greater in thickness.
|
| Environmental resistance tests |
| Heat resistance | 1,000 hours at 310℃ ±5℃ (from flange to tip) |
| Cold resistance | 500 hours at -20℃ ±5℃ (from flange to tip) |
| Moisture resistance | 500 hours in air at 40℃ ±2℃, relative humidity 90 to 95% (from flange to tip) |
|
Instructions for handling, installation and use of thermistors
Please carefully follow these instructions to avoid damage and/or faulty operation of the thermistors:
| 1. | Never exceed maximum rated power. |
| 2. | When the thermistor is used as a sensor for the control of a device, be sure to incorporate appropriate safety measures to prevent accidents, such as a separate safety circuit or back-up sensor. |
| 3. | . If the thermistor will be exposed within the device, an instruction to end users warning that the thermistor must not be touched must be included. |
| 4. | Ensure that the thermistor is not placed into the mouth or eyes; keep away from children and pets. |
| 5. | Use of thermistors in the following conditions may degrade thermistor function or lifespan; the customer must make their own checks of performance and reliability:
Presence of corrosive gases, such as C12, NH3, SOx, NOx
Environment with high electric conductivity, such as electrolytes, water, saltwater, etc.
Presence of acids, alkalis or organic solvents
Dusty or dirty environments
When thermistors are resin sealed or resin coated
|
| 6. | When disposing of thermistors, treat them as industrial waste and observe all applicable laws and regulations. |
| 7. | The thermistor is not waterproof, so the area from the flange to the lead wire end must be kept from dew, condensation or other moisture. |
|
|
 |
|
E2M-312-IT1
Top
