Product Overview

The Switch MS Series includes multiple models designed for pressure measurement and switching applications. The series is categorized into economic, standard, communication, leak test, high precision, and micro pressure types, each tailored for specific pressure ranges and output configurations.

Model and Output Types

• Series Types: MS30 (Economic), MS31 (Standard), MS32 (Communication), MS35 (Leak Test), MS38 (High Precision), MS39 (Micro Pressure).
• Output Options: Various configurations including 1NPN, 1PNP, 2NPN + analog (1-5V or 4-20mA), 2PNP + analog, and RS485 communication outputs.
• Pressure Types: Gauge, absolute, and differential pressure with ranges from ±500Pa up to ±1.000MPa depending on model.
• Interface Types: Threaded ports including R1/8", G1/8, NPT1/8, and M5.

Pressure Ranges and Accuracy

• Pressure ranges vary by model, e.g., -101.3 to 101.3 kPa, -0.101 to 1.000 MPa, -500 to 500 Pa, etc.
• Display accuracy is typically ±1% Full Scale (F.S.) with ±1 digit at 25±10°C ambient temperature.
• Repeatability is ±0.2% F.S. with ±2 digits.

Performance and Response

• Response times are selectable: 2 ms, 50 ms, 100 ms, 250 ms, 500 ms, 2000 ms; MS30 analog output models support a fastest response of 1 ms.
• Display uses a 3-color LCD (red, orange, green) with a sampling rate of 4 times per second.

Environmental and Mechanical Specifications

• Operating temperature range: 0 to 50°C (no condensation or freezing), humidity 35-85% RH.
• Storage temperature range: -10 to 50°C (no condensation or freezing), humidity 35-85% RH.
• Protection rating: IP40 according to IEC standards.
• Weight: Approximately 80 grams including power cable.
• Pressure port options: External threads R1/8" (Asian standard PT1/8), G1/8 (European standard), NPT1/8 (North American standard), and M5.

Electrical Specifications

• Power supply: 12-24 V DC ±10%.
• Current consumption: ≤ 45 mA (no load).
• Switch output max load: 100 mA; max supply voltage: 30 V DC (NPN), 24 V DC (PNP).
• Residual voltage: ≤ 1.5 V.
• Analog output (MS31 series only): Voltage output 1-5 V ±2.5% F.S., linearity ±1% F.S., output impedance ~1 kΩ; Current output 4-20 mA ±2.5% F.S., linearity ±1% F.S., load impedance 5 Ω to 600 Ω.

Communication and Configuration

• MS32, MS38, and MS39 series support RS485 interface with MODBUS RTU protocol.
• Settings such as stop bits, parity bits, and response speed can be configured; default stop bit is 1, default parity is none.
• SUPERSPEED mode enables 1 ms response time; configuration details are available in the product manual.

Accessories and Packaging

• Each unit includes a power cable with terminal connectors and an instruction manual.

Notes and Recommendations

• Output type and product model have a one-to-one correspondence; refer to the order guide for details.
• For RS485 and MODBUS RTU operation, consult the product manual.
• Response speed settings and SUPERSPEED mode require manual configuration.