testo 549 Entry-Level Digital Refrigeration Manifold

Product Introduction

The testo 549 Entry-Level Digital Refrigeration Manifold is a user-friendly, efficient tool designed to simplify maintenance and installation work on refrigeration systems and heat pumps. As an upgrade from analog manifolds, it integrates temperature measurement and automatic calculations of superheating and subcooling (with an optional clamp probe), eliminating the need for additional manual measurements and comparisons. Compatible with 60 common refrigerants, it streamlines daily tasks for technicians, offering precision and convenience in a rugged, easy-to-handle design.

Features

• Supports 60 commonly used refrigerants, pre-stored in the instrument for immediate access to standard applications.​
• Automatic calculation of superheating and subcooling in real time (when paired with optional external temperature probes), reducing manual errors and saving time.​
• Two temperature-compensated pressure sensors for fast, precise high and low pressure measurements, with automatic calculation of evaporating and condensing temperatures.​
• Temperature-compensated leakage test function, comparing initial and final system pressures to quickly identify leaks during rough tightness testing.​
• Robust 2-way metal valve block with 3 connections and 3 hose holders, ensuring durability in harsh working conditions.​
• Practical heat pump mode that eliminates the need to switch refrigerant hoses, enhancing operational efficiency.​
• IP 42 protection class and solid housing, providing reliable resistance to impacts and environmental hazards.​
• Illuminated display for easy reading in dark environments, paired with a suspension hook for secure placement during measurements.

Specifications:

Model: testo 549​

Type: Entry-level digital 2-way manifold for refrigeration systems and heat pumps​

Measuring Range (Temperature): -50 to 150 °C​

Accuracy (Temperature): ±0.5 °C​

Resolution (Temperature): 0.1 °C​

Probe Connections: 2 x plug-in (NTC) for external temperature probes (optional)​

Valve Block: 2-way metal with 3 connections and 3 hose holders​

Weight: 1060 g​

Protection Class: IP 42​

Display: Illuminated for visibility in low light​

Additional Features: Heat pump mode, temperature difference display, suspension hook​

Compatible Refrigerants: 60 common refrigerants (pre-stored)

Xi'an Kacise Optronics Co.,Ltd. is a professional manufacturer of  measuring instruments , located in China xi’an City. Since 2008, Xi'an Kacise focused on the development and production of pressure, level and flow measuring instruments .

We have been specializing in manufacturing pressure, level and flow measuring instruments and related products for 10 years. Based on experienced technical and management personnel, through efforts of our entire staff, we have become a professional measuring instrument manufacturer and solution provider. And we are continuously trying to improve product quality.

Xi'an Kacise is qualified with ISO 9001-2008, GJB 9001B-2009, CE, intrinsic safety explosion-proof and isolated safety explosion-proof certificates, etc. which ensure that our products comply with international standards.

Kacise sensors have already been exported to America, Spain, Australia, Chile and 20 other countries and regions, and received many favorable feedbacks. Our overseas distributers are also increasing. We regard “reasonable prices, efficient production time and good after-sales service” as our tenet, and hope to cooperate with more customers for mutual development.

Our goal is simple: to sell the best products at the best prices, and provides industry-leading customer service. We personally get to know each of our customers, and we know how to discover the most valuable part of our business , to help others achieve their goals.