
Contact type KN – without magnet
- TEMPRESS contact system without magnet for accurate contact function for pressure gauges and thermometers
- No contact hysteresis
- For dry instruments only
- 1, 2 or 3 contact points
- Break, close or shift function
Application
The contact system type KN can be used for alarm functions or simple actuating controls. The contact is simply set at the customer defined value where the contact function is required.
With a few exceptions TEMPRESS’ dry pressure gauges and thermometers can be delivered with one, two or three built-in contacts type KN.
The contact is made without a blank-holder magnet to avoid contact hysteresis and obtain optimum contact function. The optimum contact function also depends on power, load and contact material.
The contact pins are standard in silver (KNS) but can also be supplied in gold (KNG) – e.g. for low voltages such as 24VDC.
Contact type KN is well-suited where the processing value changes quickly. This type should not be used in processes with vibrations or transients as these will cause undesired contact operations.
Specifications | |
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Contact system | Type KN, low action |
Instrument size: | DN 100 and DN 160 on request |
Contact type KNS
type KNG Number | Silver (Ag80/Ni20), no magnet
Gold (Au80/Ag20), no magnet 1, 2 or 3 |
Min. measuring range: | 1 contact: min. 1 bar 2-3 contacts: min. 2,5 bar |
Working range Min. work. range | 10-90% of span 5% of span |
Accuracy | ±2% at span ≤ 4 bar ±1,5% at span ≥ 4 bar |
Hysteresis | ±1% of span |
Ambient temp. | -20+70°C |
Electrical connection | Plug, ISO 4400 (DIN43650-A) 2 plugs by separate circuits and by 3 contacts |
Load for low action Contacts without magnet | |||
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Voltage
Unit of measure [Volt] | Ohmic Load DC
Unit of measure [mA] | Ohmic Load AC
Unit of measure [mA] | Inductive load Cos φ>0.7
Unit of measure [mA] |
220/250 | 40 | 45 | 25 |
110 | 80 | 90 | 45 |
48 | 120 | 170 | 70 |
24 | 200 | 350 | 100 |
24 | minimum 20 mA, and gold contacts are requiered. (KE contact is recommended) |