SUNSTAR SP-42A Gas Sensor Specifications

Q: What is the operating voltage for the heating element?

The recommended heating voltage (VH) is 5.0V ±1%.

Technical specifications and performance data for the SUNSTAR SP-42A gas sensor, designed for detecting refrigerant gases like R-134a.

SUNSTAR SP-42A Gas Sensor Specifications - cover page

Brand: SunStar
Category: Other Electronics
Document type: Datasheet
Language: Chinese
Pages: 3
File format: PDF
File size: 203 KB
Published: 24 October, 2026
Updated: 24 October, 2026
MD5 checksum: EFFBF22D909BDA5FBC85C093E432C183
PDF: SUNSTAR SP-42A Gas Sensor Specifications PDF

About this manual

This document provides technical specifications for the SUNSTAR SP-42A, a semiconductor gas sensor utilizing an SnO2 sensing element. It is specifically optimized for detecting refrigerant gases such as R-134a and R-22, offering high sensitivity and fast response times suitable for fixed-point gas detection systems. This manual is written in Chinese.

What's inside

Specifications
Gas Characteristics
Operating Conditions
Dimensions
Material List

Specifications

Sensing Element Material	SnO2
Operating Temperature Range	-20°C to 60°C
Operating Humidity Range	< 95% RH (non-condensing)
Response Time	100 cpm

Frequently asked questions

What is the operating voltage for the heating element?