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Overview of the HXWP-20 Series Modules
I. General Technical Parameters of the HXWP-20 Series Modules
| Input signal | Analog output | ·DC 0–10 mA (load resistance < 750 Ω) ·DC 4–20 mA (load resistance < 500 Ω) ·DC 0–5 V (load resistance ≥ 250 kΩ) ·DC 1–5 V (load resistance ≥ 250 kΩ) |
| Digital output | Relay control output—relay ON/OFF with hysteresis. AC 220 V / 0.5 A; DC 24 V / 1 A (resistive load) | |
| Communication Output | Interface Type — Standard bidirectional serial communication interfaces: RS-485, RS-232C | |
| Characteristics | Measurement accuracy | ±0.2%FS ±1 digit or ±0.5%FS ±1 digit |
| Resolution | ±1 character | |
| Measurement range | -1999 to 9999 characters | |
| Zero-point drift | Input range: −100% to +100% | |
| Source Resistance | Below 500 Ω (effect on value: less than ±0.1% per 150 Ω) | |
| Load resistor | Less than 250 Ω (at a 1–5 V DC output) | |
| Cold-Junction Compensation Error | ±1℃ | |
| Open-circuit protection | Open-circuit protection time: less than 2 s / FS | |
| Operating environment | Ambient temperature | 0–50°C |
| Relative humidity | ≤85% RH · Avoid strong corrosive gases | |
| Supply voltage | AC 90–265 V; DC 24 V ±10% | |
| Power consumption | ≤6W AC 220V power supply ≤6W DC 24V power supply |
HXWP-201 (Single-channel) and 202 (Dual-channel) Voltage/Current Conversion Module
The HXWP20 voltage/current conversion module is a compact, plug-in‑type converter. It converts voltage (V or mV) and current (mA) signals into isolated 1–5 V DC or 4–20 mA DC output signals that are proportional to the input.
I. Instrument Features
1. Internally, a microprocessor performs mathematical computations, enabling highly accurate linearization of various nonlinear input signals. When paired with the HXWP20SH display module, the measured value corresponding to the input signal can be displayed digitally in a convenient and intuitive manner.
2. Optional AC or DC power supply; the transmitter output is isolated from the host unit, with selectable 1–5 V DC or 4–20 mA DC output signals and open‑circuit protection.
II. Instrument Parameters and Wiring Diagram
| Model number | HX-WP-201 202 Thermocouple/RTD Series | |
| Input signal | Analog quantity | Thermocouples: Standard thermocouples—B, S, K, E, J, T, WRe, etc. |
| Resistance thermometer: Standard platinum resistance thermometer: Pt100, 3-wire connection Standard copper resistance thermometers: Cu50, Cu100, 3-wire connection | ||
| Characteristics | Response time | Approximately 500 ms |
| A: Single-channel thermocouple input type | B: Single-channel thermoresistor input type | |
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| C: Dual-channel thermocouple input type | D: Dual-channel thermoresistance input type | |
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Note:
1. The external connection terminal is an M3.5 screw. Use non-soldered crimp terminals for the connection.
2. An external power switch and fuse shall be installed. A 0.5 A fuse is recommended (use a fast‑acting type when operating on a 24 VDC power supply).
3. The instrument is equipped with overcurrent protection to prevent damage caused by internal power‑supply short circuits.
4. In environments subject to lightning strikes, please install a dedicated surge arrester.
III. Product Range Table for the HXWP-LED Series Thermocouple/Resistance Temperature Detector Transmitters
HXWP-201 (Single-channel) 202 (Dual-Channel) Power Distribution Module
The HXWP20-type distribution module is a compact, plug-in‑type conversion module. It supplies power to two‑wire transmitters while receiving from them 4–20 mA DC output signals that are proportional to differential pressure, pressure, liquid level, and other process variables.
I. Instrument Features
It supports both AC and DC power supplies, features galvanic isolation between the transmitter output and the host unit, offers a selectable output signal of either 1–5 V DC or 4–20 mA DC, and is equipped with a transmitter power switch.
II. Instrument Parameters and Wiring Diagram
| Model number | HXWP-201 202 Series Distribution Module | |
| Input signal | Analog quantity | 4–20 mA DC |
| Characteristics | Response time | Approximately 500 ms (time constant) for V and mA inputs: approximately 100 ms (time constant) |
| Wiring diagram | A: Single-channel input type | B: Dual-input type |
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III. Distribution Module Family Table
★ Code example: HX-WP-201-DL-14-11-A-W
Single-channel, with an input signal of 0–20 mA; the first output is 1–5 V, and the second output is also 1–5 V. Both outputs are galvanically isolated, powered by DC 24 V.
关键词： Smart Digital Display Isolator
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