Description
Product Overview
The CMTOOL Digital Portable Manometer is a handheld differential pressure tester designed for professionals who need accurate, fast readings in the field. Measuring a range of -100 to 200 kPa, it delivers ±0.3% full‑scale accuracy and updates every 0.5 seconds. The device supports ten pressure units—including hPa, Torr, mbar, inHg, mmHg, inH2O, mmH2O, psi, kPa and kg/cm²—so you can work in the units most familiar to your industry. Constructed from a robust ABS housing, the unit resists drops and daily wear, while the 0.1 hPa high‑resolution LCD screen provides crystal‑clear data even in bright sunlight. An integrated backlight and flashlight function ensure readability in low‑light environments. Powered by four AAA batteries, the manometer weighs only 7.2 oz and measures 6.5 × 2.91 × 1.3 in, fitting easily into a tool belt or pocket.
Usage
Designed for HVAC technicians, automotive mechanics, laboratory engineers and DIY enthusiasts, this manometer excels in a variety of real‑world scenarios. Use it to monitor duct pressure differentials in heating and cooling systems, test intake manifold vacuum on engines, verify brake booster pressure, or assess crankcase and exhaust valve vacuum in automotive diagnostics. The dual‑port design enables simultaneous measurement of two points, displaying the real‑time pressure difference (P1‑P2) on the screen. Its compact size and battery operation make it ideal for on‑site inspections, routine maintenance, and emergency troubleshooting where portability and speed are critical. 
Why Choose Us
CMTOOL combines precision engineering with user‑centric design. The device’s ±0.3% accuracy surpasses many entry‑level competitors, while the 0.5 s response time ensures you capture transient pressure changes. Built‑in data functions—max/min hold, zero lock and storage for up to 29 measurement sets—allow you to track trends without external software. Every unit ships with a comprehensive accessory kit: four 40 cm hoses, a 1 m hose, seven adapters (OD 4‑12/20/16/9/8/6/8‑20 mm), four AAA batteries and a detailed user manual, so you’re ready to work straight out of the box. CMTOOL’s reputation for durability and after‑sales support gives you confidence that the instrument will perform reliably over years of demanding use.
Key Features
- Wide measurement range –100 to 200 kPa with ±0.3% FS accuracy
- Supports 10 pressure units for versatile application across industries
- High‑resolution 0.1 hPa LCD with backlight and built‑in flashlight
- Dual‑port simultaneous detection and real‑time P1‑P2 differential display
- Data hold, max/min tracking, zero lock and storage for 29 reading sets
FAQ
What batteries does the manometer use and how long do they last?
The device requires four AAA batteries, which are included. Under typical use, a set of fresh batteries provides up to 200 hours of continuous operation.
Can I use the manometer for both positive and negative pressure measurements?
Yes, the instrument measures pressures from -100 kPa (vacuum) to +200 kPa, making it suitable for both suction and pressure testing.
Is the data storage feature able to export readings?
The built‑in memory holds up to 29 sets of readings. While the unit does not have wireless export, you can manually record the values or use the zero‑lock function to keep data displayed for transcription.
What is the warranty period for this product?
CMTOOL offers a one‑year limited warranty covering manufacturing defects and hardware failures under normal use conditions.
How do I switch between different pressure units?
Press the unit button repeatedly to cycle through the ten supported units. The selected unit is displayed on the LCD screen for clear confirmation.
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