Field Instruments

Product Overview

The JUMO 701155 (SafetyM STB/STW Ex) is a high-reliability safety temperature limiter and monitor designed for industrial processes and hazardous-area applications. It provides precise temperature monitoring with configurable limit functions, ensuring safe shutdown or alarm activation whenever temperature limits are exceeded. With universal input capability, robust relay outputs, and intrinsic safety options for Ex environments, this device is ideal for safety-critical temperature control in chemical plants, industrial heating systems, and process automation.

Key Features

• Universal input for RTDs, thermocouples, and standard analog signals
• Safety-oriented design with redundant internal architecture
• Configurable limit behavior for over-temperature and under-temperature protection
• High-accuracy temperature monitoring with integrated fault detection
• Relay outputs for alarms, shutdown, or interlocking
• Intrinsically safe input version for hazardous-area applications
• DIN-rail mounting for fast and convenient installation
• Suitable for integration into safety loops and process control panels

Technical Specifications

Brand: JUMO
Model Code: 701155-8-02-0251-2053-25-044-005-059
P/n: 00711364
Type: Safety temperature limiter/ monitor (DINEN 14597 and ATEX approval)
Basic type extension: Safety temperature monitor (O-function)
Measuring input     : 2x 4..20mA
Voltage supply      : AC/DC 20..30V,48..63Hz
Ignition protection : Ex ia
Output              : 4..20 mA analog (not safety-related)
Further approvals   : With SIL-, PL-, IPL-approval

Mounting: DIN-rail mounting
Applications: Thermal process equipment, hazardous-area installations, industrial heating systems, chemical processing, and safety-critical monitoring

Applications & Use Cases

• Over-temperature protection for industrial heaters and reactors
• Safety monitoring in chemical and process plants
• Temperature monitoring in Ex-rated environments
• Integration into emergency shutdown (ESD) systems
• Monitoring of furnaces, boilers, dryers, and thermal machinery
• Replacement of older STB/STW limiters with modern safety technology

Why Buy from FieldInstruments.lk

• 100% genuine JUMO products with full factory specifications
• Fast delivery across Sri Lanka for industrial and project needs
• Competitive pricing with reliable sourcing
• Local technical support for selection, installation, and configuration
• Trusted supplier for process instrumentation and safety equipment across multiple industries

Fieldinstruments.lk
50/3, Angampitiya Rd, Ethul Kotte, Sri Lanka. 10100.
Phone: +94718555888 Email: info@fieldinstruments.lk