Professional English Translation of NP30 Series Digital Pressure Switch Specifications‌

Overview

NP30 is an smart pressure transmitter with switch including measuring pressure, display, output and control. It has advantages of high stability and fast response speed, which is suitable for hydraulic field.

Parameters

Table 1 Parameter list

Dimensions

Electrical wiring and settings

1）Output signal

4. a) 4…20mA+2 Relays。
5. b) 8-pin terminal. The terminal definition is shown in Table 2 below

Table 2 Terminal definition

CAUTION

1) When installing the connecting cable, the power supply 24VDC to the pressure controller should be separated from the strong current cable and try to avoid parallel wiring at close distances.

2) Based on the anti-interference principle of digital circuit AD sampling, solemnly remind users that the alarm speed of the controller is not as fast as possible. The selection of the alarm speed should be based on the need, in the balance between speed and stability. When the alarm speed is selected quickly, accidental fluctuations in the pressure signal or accidental interference burrs on the power supply may cause frequent alarms after being collected by the digital circuit. When the alarm speed is selected relatively slowly, the digital circuit can have sufficient time to correct The signal is subjected to interference removal filtering, and the stability can be greatly improved.

Maintenance and cleaning

6.1 Maintenance

This pressure switch is maintenance-free.

Repairs must only be carried out by the manufacturer.

6.2 Cleaning

Unsuitable cleaning agents

Cleaning with unsuitable cleaning agents may damage the instrument and the product label.

▶ Do not use any aggressive cleaning agents.

▶ Do not use any hard or pointed objects.

▶ Do not use any abrasive cloths or sponges.

Suitable cleaning agents

■ Water

■ Conventional dishwashing detergent

Cleaning the instrument

Wipe the instrument surface using a soft, damp cloth.