Temperature Transmitting Controller MTM4881 Series

Introduction

The Temperature Transmitting Controller MTM4881 Series is an intelligent, state-of-the-art device designed for precise temperature measurement, display, transmission, and control. Incorporating advanced ARM processing technology, this controller is ideal for various applications, particularly in the detection of oil temperature within hydraulic and lubrication transmission systems. With its robust IP65-rated design, it ensures reliability and longevity even in challenging environments.

Key Features

Real-time Temperature Display

The MTM4881 offers real-time temperature readings with an easy-to-read LED display. You can view the temperature in either Celsius (℃) or Fahrenheit (℉), making it versatile for global applications.

14-Segment LED Display

Equipped with a 14-segment LED display, the controller ensures clear visibility of temperature data at all times. This feature is crucial for quick monitoring and adjustments in dynamic environments.

Easy Operation

The device is designed for user convenience, featuring button programming that simplifies operation. Additionally, it records the maximum temperature during operation, and a dedicated button allows for easy clearing of this data when necessary.

Versatile Mounting Options

The MTM4881 supports multiple mounting configurations, including rail, cover, and back mounting. This flexibility makes it adaptable to various installation environments.

Hardware Protection

To safeguard against incorrect operations, the MTM4881 includes hardware protection features, ensuring consistent performance and safety.

Independent Relay Control

The controller can manage up to four relays independently, with an adjustable time-delay function. This capability is essential for applications requiring precise and coordinated temperature control.

Switchable Analog Output

The MTM4881 offers the option to switch between current and voltage output signals, providing flexibility in how the data is transmitted and used.

Intrinsically Safe Design

Meeting GB3836.1 and GB3836.4 standards, the MTM4881 is intrinsically safe and comes with explosion-proof certification. Its Ex ib IIA T6 Gb mark confirms its suitability for use in hazardous environments.

MODBUS Communication

For seamless integration into existing systems, the controller supports MODBUS communication, allowing for enhanced connectivity and control.

Environmental and Performance Specifications

Temperature and Humidity

• Operating Temperature (Controller): -25℃ to 65℃ (-13℉ to 149℉)
• Storage Temperature (Controller): -40℃ to 70℃ (-40℉ to 158℉)
• Media Temperature: -20℃ to 80℃ (-50℉ to 176℉)
• Relative Humidity: 0% to 85%

Shock and Impact Resistance

• Shock Resistance: ≤ 5g for frequencies from 10Hz to 500Hz (IEC 60068-2-6-2007)
• Impact Resistance: ≤ 10g for 11ms (IEC 60068-2-27-2008)

Electrical Characteristics

• Power Supply:

• Non-Intrinsically Safe: 220V AC ± 44V or 22V-32V DC

• Intrinsically Safe: 22V-28V DC, powered through a safety barrier

• Accuracy: ≤ ±1℃ for FS ≤ 100℃; ≤ ±2℃ for FS > 100℃
• Repeatability: ≤ ±0.2% FS
• Display Refresh Rate: 200ms

Installation and Customization

Mounting Options

The MTM4881 is designed for flexible installation, accommodating rail mounting, cover mounting, and back mounting. This versatility ensures that the controller can be easily integrated into various setups, whether in a control cabinet or a standalone configuration.

Customization

Customers can customize the probe thread to fit specific application requirements. Additionally, different probe lengths are available to match the installation depth needed for accurate temperature measurement.

Safety Compliance

The device is built to comply with stringent safety standards, making it suitable for use in hazardous areas. The safety barrier ensures that the MTM4881 operates safely under challenging conditions.

Specifications

Temperature Range: -30℃ to 150℃ (-22℉ to 302℉)
Power Supply: 220V AC ± 44V or 22V-32V DC (Non-Intrinsically Safe), 22V-28V DC (Intrinsically Safe)
Analog Output: 4-20mA DC, 0-10V DC
Relay Control: 4 relays with adjustable time delay
Protection Rating: IP65
Display: 14-segment LED, 4-digit
Communication: MODBUS
Certification: Ex ib IIA T6 Gb (Intrinsically Safe)
Mounting Options: Rail, Cover, Back Mounting
Environmental Compliance: GB/T 17626.2/3/4-2006
Shock and Impact Resistance: IEC 60068-2-6-2007, IEC 60068-2-27-2008

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