1.What is Proximity Switch?
Proximity Switch is non-contact type limit switch. With variety of output, Ex Linear, digital, etc.
2.What is Sensing Zone?
The switch has dome shaped field present in front of the sensor is called as sensing zone.
3.What is Sensing Distance?
This is the distance between the target & the sensing face at which the switch operates.( ex. This is usually specified considering MS material as target in case of inductive proximity switch.)
4.What is Repeat Accuracy?
This is the accuracy whereby the switch operates repeatedly at specified point of operation given stable operating conditions.
5.What is Response time?
This is the time by which the switch changes its state after target enter the sensing zone. For DC switches the response time can be as low as 0.1 ms but for AC switches this is around 20 ms due to external load parameters.
6.What is Flush Mounting?
If switch referred to as Flush type can be mounted inside metal body and have only frontal electromagnetic field.
7.What is Non- Flush mounting?
These type of switch has been mounted with sensing zone in metal free area.
8.What is switching Hysteresis?
This is differential between “switch ON” and “switch OFF” point of bthe switch. Which helps avoiding chattering at the sensing point.
9.What is Output logic?
The output switching element (either a Transister or Thyristor) can be normally in closed (ON) OR open (OFF) condition. It can sink, or source, examples as below, PNP-NO, NPN-PO, etc.
10. What is Load Current?
This is max. Current, which the switch can either sink from or source to the external load.
11. What is NAMUR sensor?
The NAMUR type sensor is intrinsically safe proximity switches designed to work in the hazardous areas. The working voltage & current levels of these switches are restricted to safe values as per standards.
12.What is Switch with Built in timer?
The NAMUR type sensor is is intrinsically safe proximity switches designed to work in the hazardous areas. The working voltage & current levels of these switches are restricted to safe values as per standards.
13. What is correction Factor?
Targets other than MS actuate the inductive switches at relatively less distance with correction factor.
14.What is Inductive Proximity Switch?
Inductive proximity switch works on principle of damping of oscillations by conductive materials. Senses only metallic objects. It is useful for medium counting speed. It has short sensing gaps.
15.What is an Optical Proximity Switch?
Optical Proximity switch works on principle or interruption/ reflection of infra red beam light. Senses any opaque object from Sensing Distance with Medium counting speeds and high position sensing accuracy.
16.What is Sensor Probe Size?
It gives the shape and dimensional detail with mounting arrangement of the proximity switch.