CMTOOL® Digital Micron Meter High-Precision HVAC Vacuum Pressure Tester 1/4" SAE
Description：
This digital vacuum gauge to accurately measure micro change of pressure in vacuum. You can use the vacuum gauge to monitor the performance of refrigeration systems and heat pumps (usually during commissioning).And you can gauge the real-time pressure of the refrigeration system in vacuuming, thus gathering information relevant to dehydration and cleaning foreign body (such as oil, external gas and etc.). Digital vacuum gauges parallel with vacuum pumps (making vacuum) in utilization and further, refrigerant gauges (emulation or digital) are often employed to monitor refrigeration system.

Features：

13 Measurement Units
This HVAC vacuum test gauge have more conversion units compared to other products. There are 13 conversion units in total (mmHg, inHg, umHg, ftH₂O,cmH₂O, inH₂O, Pa, Kpa, mbar, bar, Kg/c㎡,psi, oz/in²),sufficient to meet the demands of the job.

Measuring Range
This digital vacuum gauge adopts professional high precision micron vacuum sensor, which has wide testing range and more accurate and fast. The measuring range is 99999~0.1Pa (740000~0.75Micron), and the accuracy is ±5% (at 20℃).

2 Working Modes
This digital HVAC micron gauge has normal mode and monitoring mode. The default mode is normal mode, short press "DIF key" to enter monitoring mode. In monitoring mode, you can set timer and other operations.

4 Calibration Modes
This Negative Pressure gauge in the normal mode, long press the "HOLD button" to enter the calibration mode. Then you can use the "DIF key" to switch the calibration mode, which are: atmospheric calibration, vacuum calibration, custom calibration, and restore the factory calibration value.

Backlight Display
The digital micron vacuum gauge has a larger HD screen and a backlight feature that allows you to work in low light conditions.

Standard 1/4" SAE Connector (7/16"-20UNF)Anti-Slip DesignConnection Adapter - 1/4" Tee Coupler AccessConnection Adapter - 1/4" Bent Coupler Access

Technical Parameters

Vacuum tolerance    ±(10%+10microns) (100-1,000microns)
±(10%Indicating value+10microns) (100-1,000microns)

Working temperature    -10~50°C

Storage temperature    -20~50°C

Temperature scale    -10~50°C

Temperature resolution    0.1°C

Parameters    mmHg,inHg,umHg,ftH2O,cmH2O,inH2O,Pa,Kpa,
mbar, bar, Kg/cm2,psi,oz/in2

Measurement cycle    0.5s

Vacuum range    0-26.66mbar/ 0-20,000microns

Vacuum resolution    

1micron (0-1,000microns) 
10microns (1,000-2,000microns) 
100microns (2,000-5,000microns) 
500microns (5,000-10,000microns) 
5,000microns (10,000-20,000microns

1. We accept PayPal only.
2. Credit card (Visa, Eurocard/MasterCard, Amex, and Switch or Visa/Delta) payment can be accepted ONLY through PayPal (You don't need a PayPal account)
3. Other payment methods (Bank transfer, Cheque, etc.) are NOT acceptable
4. Please make the payment within 3 days.
1. Item will be shipped out within 5 working days (except weekends and holidays) after the payment is cleared or received.
2. We will send item to your Confirmed Shipping Address in Paypal only.Please confirm your order and address before you bid or pay the item.
3.International Buyers Please Note: 1)Please check with your country customs office to determine what these additional costs will be prior to bidding / buying.   2)Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer responsibility.
Item may be returned for refund or replacement within 30 days of the purchase date. Returned merchandise must be unused, in original packaging and include all accessories. Shipping costs are non-refundable.
Defective products may be returned for repair up to 1 year from the purchase date. Repairs will be processed through the manufacturer, we will assist in the repair procedure in any way we can to expedite the process.
Before any return, a Return Merchandise Authorization (RMA) must be obtained by contacting the seller. Any products returned to us without an RMA will be sent back to the buyer at his/her expense. 
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