When space is limited, how can reliable temperature measurement be achieved? Kunlun Zhongda's compact all-in-one Hartmann temperature transmitter is precisely the space-saving expert you need.
JENNIE | 2025-10-30
Whether renovating old instrument cabinets, adding new temperature measuring points on compact mechanical equipment, or embedding temperature monitoring functions in mobile devices and vehicle-mounted systems, engineers often face the same dilemma: temperature measurement is required, yet the installation space is extremely limited.
Conventional temperature transmitters feature bulky size and inflexible layout. Forcing them into narrow spaces will not only affect heat dissipation and wiring, but also leave hidden dangers for subsequent maintenance. When space becomes a major constraint, traditional makeshift solutions always mean compromises — either sacrificing measurement accuracy or increasing potential fault points.
So how to achieve stable, reliable and high-precision temperature measurement in confined spaces?
Kunlun Zhongda offers the perfect solution: Compact Integrated Hartmann Temperature Transmitter. This product perfectly combines the structural advantages of Hartmann Style Transmitter, ultra-small size features of Compact Temperature Transmitter and convenient standard DIN rail mounting of DIN Rail Temperature Transmitter, earning it the reputation of "space saver".
I. Space Shortage Dilemma on Industrial Sites: Why Conventional Transmitters Are Not Applicable
Before introducing solutions, let’s take a look at typical scenarios suffering from space constraints:
1.1 Renovation of Old Equipment
The control cabinets and junction boxes in many factories were designed decades ago, already fully occupied by relays, fuse terminals and traditional instruments. It is quite difficult to add extra temperature monitoring functions due to insufficient internal space.
1.2 Compact Mechanical Equipment
Injection molding machines, compressors, pump units, wind turbine nacelles and other equipment are designed to make full use of every millimeter of space. Most reserved sensor mounting holes can only accommodate temperature sensing elements, leaving transmitters no choice but to be installed externally, which is unsightly and unsafe.
1.3 Mobile Equipment & Vehicle-mounted Systems
Temperature monitoring systems applied in construction machinery, mining vehicles and special transport vehicles have stricter requirements on volume and weight. Any additional module will occupy valuable space and increase overall dead weight.
In all the above scenarios, the traditional split-type solution consisting of separate sensors, external transmitters and junction boxes is impractical. What engineers truly need is highly miniaturized integrated transmitters.
II. Design Concept of Kunlun Zhongda Compact Integrated Hartmann Temperature Transmitter
Fully aware of practical pain points of field engineers, Kunlun Zhongda launches the compact integrated Hartmann temperature transmitter, redefining compact design from three core aspects:
2.1 Hartmann Structure: Core of Integrated Design
The core advantage of Hartmann Style Transmitter lies in highly integrated design, which integrates temperature sensing elements and signal processing circuits into one compact housing. Compared with traditional split solutions, it eliminates intermediate junction boxes and connecting cables, greatly reducing installation space from the component level.
Traditional Solution: Temperature probe → Extension wire → Junction box → Transmitter → Signal output
Hartmann Integrated Solution: Integrated probe with built-in transmitter → Direct signal output
This structural optimization saves at least 50% of installation space.
2.2 Ultra-compact Size: Pocket-sized High-performance Transmitter
As a professional Compact Temperature Transmitter, this product adopts extreme miniaturized design with far smaller overall dimension than most similar products on the market. It can be easily installed in the following narrow spaces:
- Inside standard 86-type junction boxes
- Pre-set M20×1.5 or 1/2"NPT sensor mounting holes on mechanical equipment (integrated version)
- Gaps between dense terminal blocks
More importantly, its miniaturized design never compromises working performance. It maintains high measuring accuracy of 0.1%~0.2% full scale and excellent long-term stability while minimizing volume.
2.3 DIN Rail Mounting: Efficient System Layout
When transmitters need to be installed inside control cabinets instead of near measuring points, the advantages of DIN Rail Temperature Transmitter become prominent.
Kunlun Zhongda compact transmitters support standard TS35 DIN rail installation, bringing multiple merits:
- Fast installation: Direct clip-on mounting without extra screws
- Neat layout: Arranged side by side with other rail-mounted modules such as relays, signal isolators and PLC I/O modules
- Flexible expansion: Easily add more temperature measuring channels by installing additional transmitters on rails
- Easy maintenance: Tool-free removal and replacement
DIN rail mounting optimizes space utilization on the whole system level, enabling higher space efficiency for multiple transmitters in centralized arrangement.
III. Core Technical Parameters & Product Advantages
Adhering to miniaturization and high-performance positioning, Kunlun Zhongda compact integrated Hartmann temperature transmitter owns outstanding technical indicators as follows:
3.1 Input & Output Specifications
- Input: Compatible with PT100, Cu50 resistance temperature detectors (2-wire / 3-wire), as well as K, S, J, T, E type thermocouples
- Output: Standard 4-20mA analog signal; RS485 Modbus communication optional
- Power supply: Wide voltage DC 12~36V, compatible with most industrial power supplies
3.2 Accuracy & Stability Performance
- Measuring accuracy: ±0.1%FS ~ ±0.2%FS
- Temperature drift: ≤0.01%FS/℃
- Response speed: Determined by matched sensors; integrated design effectively shortens signal transmission delay
3.3 Environmental Adaptability
- Operating temperature (circuit part): -20℃ ~ +85℃
- Protection grade: Up to IP65 for fully encapsulated integrated version
- Anti-interference capability: Built-in reverse power protection, surge suppression and EMC electromagnetic compatibility design
3.4 Dimension Parameters
- Width (DIN rail version): Only 22.5mm, with minimized length and height
- Lightweight design: Ideal for vibration-prone and mobile equipment applications
IV. Typical Application Cases
Case 1: Intelligent Renovation of Old Control Cabinets
A chemical plant planned to add 12 temperature monitoring points for storage tanks in existing control cabinets, where only less than 20% spare space was left, making traditional split transmitters impossible to install.
Solution: Adopt Kunlun Zhongda DIN Rail Temperature Transmitters. Install 12 compact transmitters side by side on a short idle rail with total length less than 300mm. Matched with multi-core terminal blocks, the whole layout is neat and orderly without any cabinet cutting or hole expansion.
Case 2: On-board Temperature Monitoring for Compressors
An air compressor manufacturer intended to integrate oil temperature and exhaust temperature monitoring functions on unit bodies. However, reserved mounting holes were extremely shallow and external junction boxes were not allowed.
Solution: Apply Hartmann Style integrated temperature transmitters. Temperature probes and transmitter circuits are encapsulated in one stainless steel housing, directly fixed on reserved holes via threads. 4-20mA signals are directly transmitted to the host control system with concise and hidden installation structure.
Case 3: Engine Compartment Temperature Monitoring for Special Vehicles
A special vehicle manufacturer needed to install multiple temperature sensors to monitor exhaust manifolds and turbochargers inside narrow engine compartments featuring high vibration and high ambient temperature, with strict limits on wiring and fixing space.
Solution: Deploy Compact Temperature Transmitter modules inside centralized junction boxes near engine blocks. The transmitters convert resistance signals collected by PT100 probes into standard 4-20mA signals and transmit data to in-cab display instruments. The ultra-small size keeps junction boxes compact without interfering with layout of other engine components.
V. Reasons to Choose Kunlun Zhongda Compact Integrated Solution
5.1 Triple Core Advantages Integrated in One Device
It integrates Hartmann integrated structure, ultra-small compact size and standard DIN rail mounting functions. Users can obtain excellent performance and miniaturized volume at the same time without making trade-offs.
5.2 Lower Comprehensive Application Costs
Smaller size means smaller cabinet specification, shorter installation working hours and less wiring material consumption. For mass equipment manufacturers and large-scale renovation projects, such implicit cost savings are far more considerable than the price difference of transmitters.
5.3 Simplified Model Selection & Spare Parts Management
Unified transmitter model supports both RTD and thermocouple input, and is available in integrated probe type and DIN rail mounted type. Engineers do not need to prepare various transmitter models for different working conditions, greatly simplifying inventory and maintenance management.
5.4 Reliable Quality Assurance from Kunlun Zhongda
As a professional manufacturer deeply engaged in industrial sensor industry, Kunlun Zhongda enjoys high reputation in product consistency, stable delivery and timely technical support. Every finished transmitter undergoes strict accuracy calibration and function testing before delivery to ensure plug-and-play performance.
VI. Conclusion: Mini Size, Great Performance
When you are faced with insufficient installation space in temperature measurement projects, there is no need to force installation or compromise on performance. Kunlun Zhongda compact integrated Hartmann temperature transmitter, combining integrated Hartmann structure, miniaturized compact design and convenient DIN rail mounting, provides an elegant and reliable solution.
Limited space, unlimited solutions. With proper professional products, high-precision industrial temperature measurement can be easily realized even in extremely confined environments.
If your projects are troubled by insufficient installation space, feel free to contact Kunlun Zhongda technical team. We provide full-process professional support covering model selection, scheme design and on-site deployment.
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