SEKHMET 28 Pro Mini Digital Pressure Gauge User Guide
- May 15, 2024
- SEKHMET
Table of Contents
SmartGauge 28 Pro
OWNER’S MANUAL
SOUL OF YOUR AIRGUN
FEATURES
- Accurate digital pressure reading
- Multi Smart functions
- Rechargeable High-Capacity Battery
- MEMS Sensor for excellent shock resistance
- Sealed case prevents dust, water, and corrosion
TYPICAL USES
- Internal/External Regulator
- Adjustable Regulator
- Main Chamber/Pressure Tank
- Portable compressor equipment
- Specialized OEM equipment
1.1 Dial Size
28mm dial size
SPECIFICATIONS
Accuracy:| ±0.25%FS over +10 to +40 deg C (+50 to +104 deg F) ±0.5%FS over -10
to +80 deg C (+14 to +149 deg F)
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Sizes:| 1.1″ (28mm)
Repeatability:| Better than 0.5%
Range:| 30 – 300 bar (435 – 4,350 psi)
Process Connection Location:| Back
Process Connection Size:| 1/8 BSP Male
Dial:| White figures on black background
Display:| 0.49″ OLED
Sampling Rate:| 10Hz
Approvals:| High Pressure Gas
COMPONENTS
Case| Window| Restrictor
6061-T6| Polycarbonate| Safety plug
MIN/MAX TEMPERATURE LIMITS|
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Version| Ambient| Process| Storage
SmartGauge28 Pro| 23°F to 104°F (-5°C to 40°C)| -4°F to 150°F (-20°C to 65°C)
E501| 41°F to 77°F (5°C to 25°C)
KEY BENEFITS
Pro Owner’s
Manual
NAME OF EACH PART
- Display Area
- Touch-Key Area: Three touch button
- Magnetic Charging Connector: 5V In
- Snubber: To protect pressure sensors and pressure gauges against pressure surges, if it is loose, use a screwdriver to tighten it.
- Vent Hole: Explosion-proof do not block this hole.
INSTALLATION
- Before install the gauge on your air gun, choose the seal component properly.
A Complimentary Bonded Seal is NOT recommended on this gauge.
Pom/ PTFE/Rubber gaskets are recom mended on this gauge.
- Note: Using Pom/ PTFE/Rubber gaskets could possibly block the air inlet due to over-tightening, which may cause the gauge to read ZERO. Please make sure the air inlet is clear.
FIRST TIME USE
- For first time use after unpacking, charge the gauge using USB cable for at least 20 minutes. * The USB cable is at the bottom of packaging.
It takes one hour to fully charge this device from zero battery, and if the screen keeps on, the battery last for 24 hours. In most cases, the gauge works with a black screen or just sleeps. So basically, you can recharge it once two or three months, depends on the using frequency. The extreme battery life will be at least 400 days without using in one charge cycle. To display the current battery, tap the Middle Key to wake up the gauge, it shows 0 bar, thentouch & hold the Middle Key.
DISPLAY & MODES
Enter the menu.
- After waking up the gauge by touching the middle key.
- Long touch the right/left touch key in the main interface
• Simple Mode: the main interface shows current pressure and the number of
shots at the upper right corner.
• The gauge counts the number of shots by identifying pressure drops. If you
place the gauge on regulator, it would only be able to display reg pressure it
wouldn’t be able to do shot count. For shot count it need to be on the
bottle/main chamber gauge.
• Temperature drop after filling will add the number of shots.
If recording too many datas or error counting, the screen will flash with
gibberish like pictures below. The little 15 under 139 which means you
recorded 1015 times of data already, please try to clear data and the problem
should be solved.
• Two methods to clear the number of shots:
1. Combination key: Touch and hold the Middle key and then touch the Right
key in pressure display. This only works in pressure display.
2. Filling: Pressure rises over 30bars in one time.
• Due to above reasons, the regulator gauge can only read the pressure
without counting the number of shots.
• Pro Mode: Switch off Simple mode in the menu. In this mode you will get
three more displays: Shot Left / Last Shot Pressure Drop / Average Pressure
Drop.
• LEFT SHOT: Remaining shots.
• <<: Last air consumption.
• AVG: Average air consumption
• Regulator Mode: If you place the gauge on the regulator, the Regulator mode
is recommended. The shot count function/Clear data by pressure rising part is
disabled in this mode. It displays the same information as a simple mode, and
there is no other
option to cycle through different screens, only the current pressure screen.
The main difference between the regulator and simple modes is the Filter
Function. In contrast, the pressure in the regulator chamber changes rapidly;
it requires a unique software data filter for a stable display. A regulator
gauge with a simple mode may get stuck in some extreme cases.
Functions in the Menu
- Fill wake up: This function allows the gauge to identify the pressure rise and automatically turns on the screen when the device is powered. After power off, this function doesn’t work to extend battery life. Also filling a tank with a hand pump or small pump which fills your gun too slow could not trigger this feature too
- Power Off: Set Auto Shutdown time, any operation will refresh the countdown.
- Screen Off: Set Auto Display Turn Off time, any operation will refresh the countdown.
- Data Clear: Clear the shot counts.
- P-minimum: Manually give this gauge a regulator pressure you have set to calculate the left shots with the main reservoir pressure, it only works for the main reservoir gauge.
- Rotate Screen: To adjust different installing angle, this function could rotate the display 180 degrees.
- Wake by Shot: This function allows the gauge to identify the pressure drop and automatically turns on the screen when the device is powered. After power off, this function doesn’t work to extend battery life. It is possible to trigger this function by slowly leaking.
- Pressure Unit: switch units between PSI and BSR.
- Device Info: check the software version.
- Temperature: Turn on the temperature display.
- Temp Unit: switch units between °F and °C.
SOFTWARE UPDATE
This software is running on PC and compatible computers, and on platforms of
WINDOWS. There’s no need to setup the software, the only thing you need to do
is to click the icon to operate the software.
Software Requirements : English Windows XP. Windows 7 and advanced operation
systems.
Hardware Requirements: Available com port. SEKHMET programmer.
If you want to use this software, you shouldn’t worry about the installment.
It is very easy for everyone. When you get the document, you just have to
decompress the document, and find out the document named GD32 MCU ISP
Programmer.exe and place it in a file for your convenience. Then click the
icon, open it and you are welcome to run it.
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NOTES
- The coating on the threads may had been damaged. This doesn/t mean this gauge has been used. It was scratched during the two calibrations and pressure tests.
- The gauge is water resistant but do not use under water.
- Max working pressure is 350 bar and this gauge could show 400 bar at most.
- If the Carbon Fiber Cover is loose, you can put a little tape on the pressure gauge and increase the outer diameter of the pressure gauge.
- There is a buffer in the air inlet hole; it protects the sensor from the shock of high-pressure air, don’t take this screw out. If the POM seal is used while uninstalling the gauge, the screw may get stuck in the plastic, screw it back is recommended. If this screw sticks out and you can not tighten it in, the only way to solve this is removing it.
DIMENSIONS in [ ] are millimeters| | |
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For reference only, consult SEKHMET for specific dimensional drawings
Back Connection| | | |
Model No. Inches| A| B| C| D| Weight
oz/kg
28mm| 1.| 1.| 0.80| 1.20| 1.128oz
[28]| [27]| [20.5]| [30.5]| 32 g
All specifications are subject to change without notice.
All sales subject to standard terms and conditions.
©2023 ORI Design Inc.
RTS ala celal a Reela
sekhmetairgun@gmail.com
1.626.501.4602