1. Protection level
The standard protection level can reach IP67, which complies with NEMA 4 and NEMA 4X standards. It can effectively resist dust, water splashes and short-term water immersion, ensuring stable operation in harsh environments; it also provides optional configuration of IP68, which has further protection performance and can adapt to more stringent underwater environments.
2. Cable entry
The standard configuration provides two NPT 1/2 interfaces for convenient cable access; there are also a variety of optional interfaces, such as PF 1/2, PT1/2, M20, PG13.5, etc., which can meet different wiring requirements and installation scenarios.
3. Ambient temperature
The standard operating temperature range is between - 20℃ and 80℃, which can adapt to most conventional environments; if there are special needs, some options can support extreme temperature environments of - 40℃ to 80℃ or - 20℃ to 150℃, and the application scenarios are more extensive.
4 Terminal Blocks
Equipped with 8-point terminal blocks as standard, the applicable wire diameter range is 0.08 - 2.5mm²; there is also an option for 16-point terminal blocks, which provides more possibilities for complex circuit connection and signal transmission.
5. Switch type and quantity
The common configuration is 2 mechanical switches and 2 proximity sensors, which can meet the general position detection and signal feedback requirements; if there are higher requirements, 4 mechanical switches and 4 proximity sensors can be configured. Among them, the APL-312N mechanical type has 4 sets of SPDT single-pole double-throw mechanical micro switches built in, each set has a normally open point NO, a normally closed point NC and a common point COM, which is convenient for circuit control and signal switching.
6. Position indicator
The standard position indication range is 0 - 90°, and the connection can be freely rotated at 90°. The closed state is displayed in red and the open state is displayed in yellow, which is convenient for operators to intuitively understand the valve position; a three-position indicator can also be selected, with the closed state displayed in red and the open state displayed in green, which further improves the clarity of the position indication.
7. Potentiometer
A 1kΩ standard potentiometer option is provided, and 0.5kΩ and 0 - 10kΩ potentiometers are also available to meet different circuit adjustment and signal processing requirements.
8. Current output signal
A 4 - 20mA DC current output signal is optional, with an operating voltage range of 12.5 to 37V DC, and a typical value of 24V, which is convenient for signal transmission and system integration with other automation equipment.
9. Applicable voltage and current
Under AC voltage, it can withstand 3A current at 250V and 5A current at 125V; under DC voltage, it can withstand 0.2A current at 250V, 0.4A current at 125V, 4A current at 30V, and 5A current at 8V, which can be adapted to a variety of electrical systems.
If you want to know more about the technical parameters of APL312 Limit Switch Box, etc., then you are welcome to contact XINMING AUTO-CONTROL VALVES INDUSTRY for more in-depth consultation without hesitation.
