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LCD Digital Manometer Dual Port Air Pressure Meters HVAC Gas Pressure Tester Meter 12 Unit ±206 kPa / ±30Psi

(inH20,psi,bar,mbar,kPa,inHg,mmHg,ozin2,ftH20,cmh20,kgcm2) 4 measuring modes (Max, Min, Avg, DIF)

Description:

✅【High Accuracy】

Test air pressure ±206 kPa / ±30Psi with ±0.3%FS high accuracy. ±0.25%FS repeatability.
11 gas measurement units optional, including mmHg, inHg, ftH₂O, cmH₂O, KPa, Mbar, Bar, Psi, Kgcm², inH₂O, and Ozin². Over-range indication available.

✅ 【Dual Port Design】

Equipped with two tube connector(3.18mm diameter), digital manometer 189B is capable to measure static pressure(positive/negative) and differential gas pressure levels accurately.
An essential tool to obtain accurate pressure readings and diagnose issues in HVAC heating, ventilation, and air conditioning systems.

✅ 【Data Record & Zero-out】

Press"REC" button to record and review max / min / average air pressure data;
Short-press "HOLD” button to freeze measurement data and Long-press 5 seconds to clear out remaining data to ensure measure accuracy.

✅ 【Backlit LCD】

Large backlit LCD screen to display gas pressure value clearly even in low-light conditions. Automatic power-off after 25 mins no-operation to save battery life.
Protective cap and 134g handheld design makes this dual port manometer gauge more practical in testing air pressure for water column, gas valve and furnace etc.

✅ 【Accessories & Warranty】

BTMETER manometro air pressure differential meter 189B comes with 4pcs flexible tube, 1pcs 1/8 thread adapter, portable case and 180 days quality warranty.

✅ 【Wide Applications 】

Widely used in natural gas pipelines, air conditioning, refrigeration and ventilation systems, mechanical hydraulics, plastic moulding, ceramic product manufacturing, biopharmaceutical moulding, mine pressure testing, petrochemical industry melting, pressure testing of gas, liquid and manufacturing industrial equipment, liquid level testing, laboratory calibration, medical environment micro pressure testing, etc.

Specification:

Accuracy: ± 0.3% FS
Linear/magnetic hysteresis: ± 0.1% FS of full scale
Maximum pressure limit: 30Psi
Repeatability ± 0.25% FS
Automatic switch-off: 20 minutes
Pressure connection: one 1/8 ‘(3.18mm) quick connector
Working temperature: 0-40 ℃
Storage temperature range: -10~60 ℃
Call over the range: ERR1 or ERR2
Working power supply: two AAA batteries
Weight: 134g
Size: 160*62*31mm

PRODUCT DETAILS:

√℃/℉.

LCD display.

Auto / manual shutdown.

Low battery indicator.

Dual connection.

Holds data.

Backlight.

Max/min.

Automatic power off.

Differential pressure mode.

Package list:
1 × BT-189B Digital Manometer
2 × Tubes
1 × Fitting
1 × User Manual
1 × Packing Box

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Key Description:

1. Turn on/off button

2. Data hold button

3. Unit conversion function button

4. Backlight button

5. Record button

6. Difference value button

Buttons Operation:

1.Power on/off Button: Short press to turn on or off, long press to select whether to turn off automatically, and press HOLD to select ON or OFF. ON means automatic shutdown is on (automatic shutdown time is about 25 minutes), and OFF means automatic shutdown is off.

2.HOLD Button Power on status:Short press is the data holding function. At this time, the "HOLD" symbol will appear on the display, and then short press to cancel the holding function. If there is a base number before measurement, press and hold it for more than 5 seconds, the display of the screen will show “---”, and the instrument is reset to zero.

3.UNITS Button Power on status:Unit conversion function. Press this button to cycle between units, Bar,mmHg,Ozin²,Kgcm²,Psi,inH₂O,kPa，ftH₂O,inHg,cmH₂O,Mbar.

4.DIF Button Power on status: Difference value button, the pressure value after pressing the button minus the pressure value before pressing the button.

5.RFC Button on status: Press the button for a short time to enter the recording mode, and press and hold button for 5 seconds to exit the recording mode. In the recording mode, continue to press the button briefly to view the maximum, minimum and average values recorded in the measurement. Other functions cannot be operated.

6.LIGHT Button on status: Press this button once to turn on the backlight, and press it again to turn off the backlight, or the backlight will turn off automatically after 30 seconds.