---
product_id: 33325189
title: "HM685 Hydronic Manometer"
brand: "tsi alnor"
price: "€ 6383.83"
currency: EUR
in_stock: true
url: https://www.desertcart.pt/products/33325189-hm685-hydronic-manometer
store_origin: PT
region: Portugal
---

# 0.001 psi Resolution ±1% Pressure Accuracy 12+ Hours Battery Life HM685 Hydronic Manometer

**Brand:** tsi alnor
**Price:** € 6383.83
**Availability:** ✅ In Stock

## Summary

> 🔧 Master Your Hydronics Like a Pro—Precision Meets Power!

## Quick Answers

- **What is this?** HM685 Hydronic Manometer by tsi alnor
- **How much does it cost?** € 6383.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/33325189-hm685-hydronic-manometer)

## Best For

- tsi alnor enthusiasts

## Why This Product

- Trusted tsi alnor brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Complete Pro Kit Included:** Arrives with carrying case, hose set, AC adapter, interface cable, software, and instructions—everything you need to hit the ground running.
- • **User-Friendly & Data-Ready:** Easily view measurements on a crisp LCD and store up to 1000 readings for seamless data management and reporting.
- • **Uninterrupted Field Performance:** Stay powered through long workdays with a minimum 12-hour battery life powered by 4 AA batteries—no downtime, no hassle.
- • **Versatile Pressure & Flow Range:** Handle any job with a wide pressure range of ±300 psi and flow capacity up to 9999 GPM, covering all your hydronic needs.
- • **Precision that Professionals Trust:** Achieve ultra-accurate readings with ±1% pressure accuracy and 0.001 psi resolution for flawless hydronic system diagnostics.

## Overview

The TSI Alnor HM685 is a digital hydronic manometer engineered for precision with ±1% pressure accuracy and ultra-fine 0.001 psi resolution. It supports a broad pressure range of ±300 psi and flow rates up to 9999 GPM, making it ideal for complex hydronic systems. Featuring a clear LCD display, 1000-reading memory, and a robust 12-hour battery life powered by 4 AA cells, it ensures reliable performance in the field. The package includes all essential accessories, backed by a 2-year warranty and made in the USA.

## Description

' Digital Hydronic Manometer, Pressure Range +/-300 psi, +/-2068 KPA, Pressure Resolution 0.001 psi, 0.01 KPA, Pressure Accuracy +/-1 Percent of rdg, Operating Temp. Range 40 Degrees to 113 Degrees F, 4 Degrees to 45 Degrees C, Flow Range (GPM) 0 to 9999, Max. Pressure (PSI) 300 PSI, 2068 KPA, Fluid Temp. Range (Deg. C) 32 To 212F, 0 To 100C, LCD Display, Memory 1000 Reading, Power Source 4 AA Cell Batteries, Battery Life Minimum 12 Hours '

## Features

- Price For: Each Pressure Accuracy: +/-1% of rdg Pressure Resolution: 0.001 psi, 0.01 KPA Flow Range (GPM): 0 to 9999 Power Source: 4 AA Cell Batteries Manufacturers Warranty Length: 2 Year Display: LCD Fluid Temp. Range (Deg. C): 32 To 212F, 0 To 100C Item: Digital Hydronic Manometer Max. Pressure (PSI): 300 PSI, 2068 KPA Pressure Range: +/-300 psi, +/-2068 KPA
- Battery Life: Minimum 12 Hours Operating Temp. Range: 40 Degrees to 113 Degrees F, 4 Degrees to 45 Degrees C Includes: Carrying Case, Hose Set, Batteries, AC Adapter, Interface Cable, Software, Instructions Memory: 1000 Reading Country of Origin (subject to change): United States

## Product Details

- **Brand:** TSI Alnor
- **Item dimensions L x W x H:** 6.95 x 17 x 21 inches
- **Item Weight:** 11.66 Pounds
- **Manufacturer:** TSI ALNOR

## Images

![HM685 Hydronic Manometer - Image 1](https://m.media-amazon.com/images/I/61Bn2ClxV9L.jpg)

## Questions & Answers

**Q: Does this come with the calibration certificate?**
A: Yes, a factory calibration.

## Frequently Bought Together

- TSI Alnor HM685 Hydronic Manometer
- Pure Silicone Tubing - 1/8" ID x 1/4" OD - High Temp Kink-free Hose Tube 500F (50 Feet)
- ZIBOO ASP2 Static Pressure Probes (Two-Pack)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-18*