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APL-220N Limit Switch Box

APL220N limit switch box

APL-220N Limit Switch Box

Introduction:

APL-220 Limit Switch Box , also can be called Valve Position Indicator or valve position monitor, is a kind of field instrument for detecting valve status in automatic control system.

Features:

Ordering Code:

Standard Specification:

Model

Specification

APL- 2N Series APL- 3N Series APL- 4N Series APL- 5N Series
Enclosure Weatherproof IP67/NEMA4&4X Weatherproof IP67/NEMA4&4X Weatherproof IP67/NEMA4&4X Explosionproof E EX d IIB T6 Weatherproof IP67/NEMA4&4X Explosionproof E EX d IIC T6
Cable entries Two NPT1/2” Two NPT1/2” Two NPT3/4” Two NPT3/4”
Ambient temperature -20℃~ 80℃ -20℃~ 80℃ -20℃~ 80℃ -20℃~ 80℃
Terminal strips 8 points (0.08-2.5m) 8 points (0.08-2.5m) 8 points (0.08-2.5m) 8 points (0.08-2.5m)
Position indicator 0 ~ 90。(90。turn free join) close:red open:yellow 0 ~ 90。(90。turn free join) close:red open:yellow 0 ~ 90。(90。turn free join) close:red open:yellow 0 ~ 90。(90。turn free join) close:red open:yellow
Switches Mechanical switch x2 proximity sensor x2 Mechanical switch x2 proximity sensor x2 Mechanical switch x2 proximity sensor x2 Mechanical switch x2 proximity sensor x2
Painting Chromate Polyester podwer coating(black) Chromate Polyester podwer coating(black) Chromate Polyester podwer coating(black) Chromate Polyester podwer coating(black)

 Option Specification:

Specification        Model APL- 2N Series APL- 3N Series APL- 4N Series APL- 5N Series
Enclosure Weatherproof IP68 Weatherproof IP68 Weatherproof IP68 Weatherproof IP68 Explosionproof E EX d IIB T6

E EX ia IIC T6

Cable entries Two PF1/2”, PT1/2” M20, PG13.5 Two PF1/2”, PT1/2” M20, PG13.5 FOUR PF3/4”, PT3/4” M20, M25 Two  NPT3/4”PT3/4”
Option temperature -40℃  ~ 80℃

-20℃  ~ 150℃

Terminal strips 16 points (0.08-2.5m) 20 points (0.08-2.5mm)
Position indicator three position close:red open:Green three position close:red open:Green three position close:red open:Green three position close:red open:Green
Switches Mechanical switch x4 proximity sensor x4 Mechanical switch x4 proximity sensor x4 Mechanical switch x4 proximity sensor x4
Potentiometer 1k ohm standard. 5k ohm. 0-10k ohm 1k ohm standard. 5k ohm. 0-10k ohm 1k ohm standard. 5k ohm. 0-10k ohm
Current output signal unit 4~20mA DC

12.5 to 37VDC (24V typical)

4~20mA DC

12.5 to 37VDC (24V typical)

4~20mA DC

12.5 to 37VDC (24V typical)

Painting Nylon others on request red, green, blue, yellow, silver Nylon others on request red, green, blue, yellow, silver Nylon others on request red, green, blue, yellow, silver Nylon others on request red, green, blue, yellow, silver

Wiring diagram

Dimensions:

 

Installation requirements: The power must be turned off before opening the cover. After the product is installed, the technician needs to adjust it, let the valve go back and forth several times to determine that the limit switch signal is reliable.

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