Elitech MS Series Digital Manifold Gauge

1. Product Description

1.1 Brief Introduction

Welcome to the Elitech MS Series digital manifold gauge. Please read this manual carefully before use to avoid any irregular operation that may harm you and your product.

The MS Series manifold instrument combines the functions of pressure and temperature measurement mode, vacuum mode, and pressure holding mode to provide users with a richer database for analysis and diagnosis, and to improve efficiency in the field. The robust plastic casing, combined with durable elastomer keys and a large backlit LCD display, offers superior product protection and clearer data display.

1.2 General Overview

1. Temperature probe connection

2. LCD display

3. Control buttons (see 1.3 for button functions)

4. Liquid visor

5. Control valve

6. Refrigerant pipe holder

7. Refrigerant pipe connection interface (1/4SAE)

8. Suspension

9. Battery compartment (3 AA batteries, replaceable)

10. Warning label (built-in magnet, do not break)

1.3 Button Functions

1.4 Specifications

2. Quick Start Guide

1. Press and hold the power button (MODE / ) to turn on the device.

2. Go to the PT pressure and temperature measurement screen and briefly press (< / ►) to select the refrigerant.

3. Connect the high and low pressure sides of the product to the system under test.

4. Temperature clamps are attached to the product at one end and to the system pipe being measured at the other.

5. The system being tested is turned on, at which point real-time changes in parameters such as system pressure, temperature, and saturation temperature can be monitored.

3. Operation Steps

3.1 Preparation for Measurement

1. Connect the temperature probe. The temperature probe must be connected to the product before measurement and will be identified automatically after power-on.

2. Press the power button to turn on the machine and enter the main interface (Figure 1).

3. Zero the pressure sensor (long press ZERO to zero it). Zero the pressure sensor before each measurement. Always disconnect the instrument from any pressure source and equalize it to external pressure before zeroing.

4. Connect the refrigerant tubes. The refrigerant tube on the low-pressure side (blue) and the refrigerant tube on the high-pressure side (red) are each connected to the instrument and to the system under test.

5. Adjust the refrigerant (briefly press < / ►) to select the required refrigerant. Refrigerant can only be switched in the saturation temperature sub-mode (EV CO).

3.2 Pressure-Temperature Measurement Mode (PT)

3.2.1 Saturation Temperature Sub-mode (EV CO)

After adjusting the refrigerant, the data is read, and the interface (Figure 1) displays the measured pressure, temperature, saturation temperature, and evaporation temperature values on the high and low-pressure sides.

Figure 1 Interface diagram of the saturation temperature sub-mode

3.2.2 Superheat-Subcooling Measurement Mode (SH SC)

Press the MODE button to enter the superheat and subcooling mode. The interface (Figure 2) displays the measured pressure, temperature, superheat, and subcooling values on the high and low-pressure sides.

Figure 2 Interface diagram of the superheat and subcooling degree sub-mode

3.2.3 Temperature Difference Sub-mode (AT)

Briefly press the MODE button to enter the temperature difference sub-mode. The interface (Figure 3) displays the measured pressure, temperature, and temperature difference values on the high and low-pressure sides.

Figure 3 Interface diagram of the temperature difference sub-mode

3.3 Evacuation Measurement Mode (VAC)

1. Connect the system to the high-pressure side and open the high-pressure side valve. The high-voltage side channel is the vacuum test port of the system.

2. Briefly press MODE + < / ► at the same time in the PT mode to enter the vacuum test VAC interface.

3. The product is connected to the vacuum pump and the system under test.

4. Turn on the vacuum pump and extract the system pressure. System vacuum is displayed when system pressure is lower than atmospheric pressure (i.e., pressure indication is less than 0); otherwise, - - - is displayed.

5. The interface (Figure 4) displays the current system pressure value, system vacuum level, and the timer to enter this interface.

Figure 4 Vacuum test interface

Tip: This vacuum function uses a non-professional vacuum sensor and can only be used to observe the approximate vacuum state of the system. If you need to accurately measure the system vacuum value, it is not recommended to use this instrument; please use a professional vacuum gauge.

3.4 Pressure Measurement Mode (HOLD)

1. Connect the refrigerant tube of the high-pressure side to the system under test and close the high-pressure valve. The high-voltage side channel is the system pressure holding test terminal.

2. To enter the pressure holding test: briefly press MODE + ► simultaneously.

3. To start the leak test: Briefly press the ► button, the ■ icon is displayed, and the timer starts (Figure 5). The timer counts every minute. After starting pressure holding, the initial value is displayed in the low-pressure zone and the current value in the high-pressure zone.

4. To end the leak test: Briefly press the ► button for the icon to appear (Figure 6).

5. View the test data and analyze the system's leak condition.

Figure 5 Start interface of the pressure holding test

Figure 6 End interface of the pressure holding test

Tip: The instrument comes with temperature compensation and is capable of performing gas tightness tests on compression systems. Leak analysis is performed by measuring system pressure and ambient temperature over a period of time. If the temperature compensation function is not needed, it can be disabled in the settings.

3.5 Setting Mode (SET)

3.5.1 Unit Setting

Temperature Unit

1. Long press the MODE button in any mode interface to enter the unit setting interface.

2. Briefly press < / ► to change the temperature units (Figure 7). If you only need to adjust the temperature unit, you can exit the setting by long pressing MODE after step 2.

Pressure Unit

1. Briefly press MODE in the setting interface to adjust the pressure unit.

2. Select the pressure unit by pressing < / ► (Figure 8). If you only need to adjust the pressure unit, you can exit the setting by long pressing MODE after step 2.

Figure 7 Temperature unit adjustment interface

Figure 8 Pressure unit adjustment interface

3.5.2 Auto Power-Off Setting

1. Long press the MODE button in any mode interface to enter the unit SET configuration interface.

2. Briefly press MODE twice to switch to the auto power-off setting (Figure 9). The default auto power-off time is 15 minutes.

3. Briefly press < / ► to adjust the automatic shutdown time (5, 10, 15, 30, 60min). OFF: Disable the auto power-off function (Figure 10). ON: Activate the auto power-off function.

Figure 9 Auto power-off screen

Figure 10 Auto power-off screen

3.5.3 Temperature Compensation Setting

1. Long press the MODE button in any mode interface to enter the unit configuration interface.

2. Briefly press MODE three times to switch to the temperature compensation setting (Figure 11). The temperature compensation function is activated by default.

3. Briefly press < / ► to activate/deactivate the temperature compensation function. OFF: Disable the temperature compensation function. ON: Enable the temperature compensation function.

Figure 11 Temperature compensation setting interface

4. Intelligent Applications (MS-1000S model only)

The MS-1000S is compatible with wireless Bluetooth connection and can be experienced through the mobile APP to remotely view measurement data, record and export data reports, achieve remote firmware updates, pressure holding alarm reminders, and other intelligent functions.

4.1 APP Download

1. Apple Users: Search for "Elitech Tools" in "APP Store".

2. Android Users: Search for "Elitech Tools" in "Google Play".

3. Scan the QR code to get the APP.

Compatibility: Apple systems are compatible with version 11.0 and above, Android systems are compatible with version 5.0 and above.

Note: To establish a Bluetooth connection on an Android or iOS device, the Elitech Tools application must be installed.

4.2 APP Connection

1. When the product is powered on, briefly press the key and the Bluetooth icon will flash.

2. Open "Elitech Tools", click "Search for nearby devices", connect the product, and enter the interface to view the data.

5. Instrument Maintenance

5.1 Battery Replacement

1. Turn off the instrument.

2. Loosen the battery cover screws and remove the battery cover.

3. Remove the depleted battery and fill the battery compartment with a new one. The battery type is 3 AA batteries; pay attention to the battery polarity.

4. Replace the battery cover and tighten the screws.

Please remove batteries when storing or not using the product for a long time to prevent battery leakage and product corrosion.

5.2 Product Cleaning

1. If the instrument casing is dirty, wipe it with a damp cloth. The use of highly corrosive detergents or solvents to clean the product is prohibited.

2. Keep the threaded connections of the refrigerant tubes clean and free of grease and other deposits.

5.3 Periodic Replacement of Refrigerant Tubes

If the device is dropped or subjected to other mechanical loads, the tube may be partially damaged, and it is recommended to replace it with a new refrigerant tube.

6. Tips and Help

6.1 Problems and Solutions

6.2 Symbol Description

6.3 Package Accessories

MS-1000

Main product *1
Temperature clips with cable *2
Instruction manual *1

MS-1000S

Main product *1
Temperature clips with cable *2
Instruction manual *1
Refrigerant tube *3