Leading company in Signal converters and Digital panel meters

Watanabe Electric Industry Co., Ltd.

JAPANESE

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Plug-in Compact Signal Converter
Compact converters at low prices!

WSPFSeries

The most compact type of plug-in signal converter in Watanabe Electric Industry’s signal converter line.We offer a low-cost, compact type with a socket to easily plug and unplug from the main unit for simpler maintenance.
The product line also includes isolators, distributors (current loop supply), thermocouple converters, RTD converters, and potentiometer converters.

WSPF Series Plug-in Compact Signal Converters

5 Features

Feature 1

Wide-range
zero-span adjustment

±10%

10% zero span adjustment
by front trimmer
Easy-use design.

Feature 2

High adjustment
sensitivity

15-turn

15-turn zero-span adjustment trimmer.
Simple, frustration-free fine tuning.

Feature 3

Safe voltage
proof design

3kV

3kV withstand voltage.
Reliable, safe design.

SAFETY DESIGN

Feature4

Extended warranty
period

Extended
5-year warranty

Our confidence in the WSPF Series
product lifespan enables us to offer a
long-term warranty.
Use confidently for years.

Feature 5

Power supply

Compatible with DC
30V power supply.

Use with DC 24 V batteries mounted in
vehicles with large voltage fluctuations.

*The product images are for illustration
purposes only, and may differ from the
actual design.

watanabe Policy

Long-term, stable supply

Our company’s history as a specialized manufacturer of signal converters means that we take responsibility for the products and parts we provide, and do our utmost to meet your long-term needs.

Long-term, stable supply

Free adjustment on delivery

All our products are manufactured to order. We will adjust products to our customer's specifications upon delivery.
We also accept orders for special specifications. Consult us first.

Free adjustment on delivery

All products made in-house,
in Japan

Every product we offer is designed and manufactured at our own plants.
That’s how we meet short deadlines with high quality products through strict control of both manufacturing and inspection.

All products made in-house, in Japan

WSPF Series line-up

13 products

■ IsolatorsCE

  Isolator Isolator 2-output isolator
Model WSPF-IS WSPF-DS WSPF-DSW
Reference accuracy ±0.1% fs (23°C)
Response time Approx. 25 ms (0 to 90%)
Isolation Mutually isolated between the input, output, and power supply terminals
Power supply voltage AC 100 to 240 V ± 10%, DC 24 V ± 10%, DC 10.8 to 30 V, DC 110 V ± 10%
Insulation resistance 100 MΩ or higher (DC 500 V) (mutually isolated between the input, output, and power supply terminals)
Withstand voltage AC 3000 V for 1 minute (between the power and input/output terminals), AC 2000 V for 1 minute (between the input and output terminals)
Recommended temperature and humidity range - 5°C to + 55°C, 90% RH or less (no moisture condensation)
Dimensions (mm) 84 (H) × 23 (W) × 106.5 (D) 84 (H) × 29.5 (W) × 106.5 (D)
  PDF PDF PDF
  High-speed isolator  2-output high-speed isolator
Model WSPF-DE WSPF-DEW
Reference accuracy ±0.1% fs (23°C)
Response time Approx. 120 µs (0 to 90%)
Isolation Mutually isolated between the input, output, and power supply terminals
Power supply voltage AC 100 to 240 V ± 10%, DC 24 V ± 10%, DC 10.8 to 30 V, DC 110 V ± 10%
Insulation resistance 100 MΩ or higher (DC 500 V) (mutually isolated between the input, output, and power supply terminals)
Withstand voltage AC 3000 V for 1 minute (between the power and input/output terminals), AC 2000 V for 1 minute (between the input and output terminals)
Recommended temperature and humidity range - 5°C to + 55°C, 90% RH or less (no moisture condensation)
Dimensions (mm) 84 (H) × 23 (W) × 106.5 (D) 84 (H) × 29.5 (W) × 106.5 (D)
  PDF PDF

■ Distributor (Current Loop Supply)

  Insulation distributor 2-output insulation distributor
Model WSPF-DBZ WSPF-DBZW
Input signal DC 4 to 20 mA (transmitter signal)
Reference accuracy ± 0.1% fs (23°C)
Response time Approx. 25 ms (0 to 90%)
Power supply for transmitter DC 24 V ± 1 V, up to approx. 25 mA
DC30V ±1V,up to approx.25mA (only 1output type)
  PDF PDF

■ Thermocouple Converter

  Thermocouple converter 2-output thermocouple converter
Model WSPF-THS WSPF-THW
Input signal JIS compliant thermocouple
Reference accuracy ±0.2% fs(23℃)
Response time Approx. 25 ms (0 to 90%)
Cold junction compensation accuracy ± 0.5°C or less (± 1°C or less for R and WR thermocouples)
Burnout Upscale burnout
  PDF PDF

■ RTD converters

  RTD converter 2-output RTD converter
Model WSPF-RTS WSPF-RTW
Input signal Pt 100 Ω, 3-wire (span 50°C or higher)
JPt 100 Ω, 3-wire (span 50°C or higher)
Nickel 508.4 Ω at 0°C, 3-wire
Reference accuracy ±0.1% fs(23℃)
Response time Approx. 25 ms (0 to 90%)
Burnout Upscale burnout
  PDF PDF

■ Potentiometer Converters

  Potentiometer converter 2-output potentiometer converter
Model WSPF-MS WSPF-MSW
Input signal 3-wire potentiometer
Reference accuracy ± 0.1% fs (23°C)
Response time Approx. 25 ms (0 to 90%)
Burnout Upscale burnout
  PDF PDF

Complies with the CE Low Voltage Directive, EMC commands

Dimensions (mm)

8P socket type

8P socket type

11P socket type

11P socket type

The specifications are subject to change without notice to improve performance.

Please feel free to contact us for more information. Contact Form