Japan, Shinagawa Sokki
Shinagawa Sokki Temperature Compensated Pressure Switch
Product Made in Japan
Manufacturer: Shinagawa Sokki Mfg. Co.,Ltd
Product name: Temperature Compensated Pressure Switch
Features
1. Automatic compensation for pressure change due to temperature
This product is provide with a function to compensate pressure change of SF6 gas due to temperature by bimetal to keep the indicated pressure at almost the same level as the rated pressure.
This temperature compensating mechanism permits detecting a pressure drop due to SF6 gas leakage correctly.
2. Strong structure against shocks, vibrations, and pulsations
With the inert liquid filled in this switch, high lubrication, anti-corrosion, and anti-vibration effects can be provided in the internal mechanism.
The product is excellent in weather resistance and use both indoors and outdoors. Its fully sealed structure is free from oil leakage.
3. Maintenance-free and long life
Since this product was release, in various severe environments of high-temperature, high-humidity, and cold districts, having an actual service results for 10 years or more. In addition, this product requires no maintenance after it is install
4. Reliable quality based on our original technology and completely made in Japan
We guarantee an indication accuracy of ±1% F.S (= full scale) (at 20ºC). In addition of the standard model, we can supply specific models for cold districts which were developed by our excellent technology so that they could be operated in an environment of -50ºC. All their components are worked, assembled, and inspected in Japan.
Example for setting pressure
Unit：MPa Setting temperature：20℃
| Rated pressure | 1st contact (lower limit) | 2nd contact (lowest limit) |
| 0.35 | 0.30 ±0.02 | 0.25 ±0.02 |
| 0.50 | 0.45 ±0.02 | 0.40 ±0.02 |
| 0.55 | 0.50 ±0.02 | 0.45 ±0.02 |
| 0.60 | 0.55 ±0.02 | 0.50 ±0.02 |
Specification
| 1）Ambient temperature | -20℃～+40℃ |
| 2）Temp. compensation range | -20℃～+60℃ |
| 3）Indication accuracy | ±1% F.S. (at +20ºC) |
| 4）Scale range (example) | -0.1MPa（-76cmHg）～1MPa |
| 5）Contact mechanism | Magnet assist type (2 lower limits) |
| 6）Contact capacity | more than 0.05A at 250V AC, more than 0.1A at 125V AC(inductive breaking current) more than 0.13A at 250V DC, more than 0.26A at 125V DC (non-inductive breaking current) |
| 7）Max. allowable gas leakage | 1 x 10-9 Pa･m3/s or less |
| 8）Operating environment | Both indoors and outdoors |
| 9）Weight | Approx. 1.7 kg |
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