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
Contact systemType KN, low action
Instrument size:DN 100 and DN 160 on request
Contact type KNS

type KNG

Number
Function

Silver (Ag80/Ni20), no magnet

Gold (Au80/Ag20), no magnet

1, 2 or 3
Break, close or shift

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
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]

220/25040
45 25
110
80
90 45
48120
17070
24
200
350100
24minimum 20 mA, and gold contacts are requiered.
(KE contact is recommended)

All the contact functions bellow are based upon rising pressure.

Single contact

(1 contact point)

Avaliable contact types:

KN,KM,KE and KI

  • 1
    Contact Function : Break
  • 2
    Contact Function : Close
  • 3
    Contact Function : Shift
  • 4
    Contact Function Separate Circuits : Break
  • 5
    Contact Function Separate Circuits : Close

Double contact

(2 contact points)

Avaliable contact types:

KN,KM,KE and KI

Shift contact

(2 contact points switch function)

Avaliable contact types:

KN and KM

Double contact

(2 contact pointers seperate Circuits)

Avaliable contact types:

KN and KM

Triple contact

(3 contact pointers)

Avaliable contact types:

KN and KM

Triple contact

(3 contact pointers)

Avaliable contact types:

KN and KM



TEMPRESS reserves the right to changes without notice
Last modified date: 05-07-2019
Flow Pressure gauge Magnet contact Contact type KM – with magnet
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