Wouldn't the 2psi version do everything this one does and more? They both have 0.001psi resolution.

If all you care about is 0.001 psi resolution, then you should be fine with the 2psi version. However, the 0.5psi version does have better resolution, as can clearly be seen in the spec sheet, ie, 0.01mmHg vs 0.1mmHg. So it just depends on your application, but it would be a pretty rare application that requires better resolution that 0.001psi.

Is it intrinicly safe for testing natural gas pressure?

No moving parts, and a sealed assembly would lead me to say yes.

This includes nist-traceable calibration certificate?

This does not come with the NIST traceable certificate. The Extech part number HD750-NIST will include the cert.

How many decimal places does this unit display to the right of the decimal when using "in wc"?

Two. It reads in hundredths of inches water column. It's probably not that accurate, but it displays them.

Extech Hd755 Differential Pressure Manometer 0 5 Psi 11 Units

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Description

🔧 Elevate your pressure game—precision, portability, and pro-grade power in one sleek tool!

DATA CAPTURE MADE SIMPLE - Leverage Min/Max/Average tracking plus a Hold function to freeze critical readings, ensuring no detail slips through during complex tasks.
EFFORTLESS UNIT SWITCHING - Seamlessly toggle among 11 pressure units—PSI, mbar, inH2O, mmHg, and more—eliminating conversion guesswork on the spot.
VISIBILITY IN ANY ENVIRONMENT - Bright backlit LCD and Zero function guarantee clear, drift-free measurements even in dim mechanical rooms or tight spaces.
RUGGED PORTABILITY FOR FIELD PROS - Compact, durable design with USB connectivity, protective case, and long battery life keeps you powered and precise wherever the job takes you.
PRECISION THAT PROFESSIONALS TRUST - Achieve ultra-accurate differential pressure readings within ±0.5 PSI for flawless HVAC diagnostics and industrial calibration.

The Extech HD755 Differential Pressure Manometer delivers professional-grade accuracy with a ±0.5 PSI range and 11 selectable units, perfect for HVAC, cleanroom, and industrial applications. Featuring Min/Max/Average data logging, a backlit LCD, Zero drift elimination, and USB connectivity, it’s engineered for field durability and ease of use. Complete with hoses, protective case, and long battery life, the HD755 is the trusted choice for technicians demanding reliable, versatile pressure measurement on the go.

Specifications

ASIN	B004CR4MAG
Best Sellers Rank	#382,178 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #98 in Manometers
Brand Name	Extech
Customer Reviews	4.3 4.3 out of 5 stars (23)
Global Trade Identification Number	00793950107553
Included Components	Meter, Probe, Case, Batts
Item Dimensions	2.9 x 1.9 x 8.2 inches
Item Highlight	+/-0.5 psi low range, 11 pressure units, MIN/MAX/AVG, data hold, zero, USB interface, backlit, hard case
Item Weight	0.28 kg
Manufacturer	Extech
Material Type	Polycarbonate (PC)
Model	HD755
Number of Items	1
Part Number	HD755
UPC	793950107553 793950107560
Unit Count	1 Count
Warranty Description	Full three year warranty on parts and workmanship, unless otherwise specified. This warranty does not apply to defects resulting from action of the user such as misuse, improper wiring, operation outside of specification, improper maintenance or repair, or unauthorized modification.

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₨8854

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Seychelles.

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TrustScore 4.5 | 7,300+ reviews

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Extech HD755 Differential Pressure Manometer, 0.5 psi, 11 Units, USB

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