Skip to main content

(360) 800-5535 · Mon–Fri 9am–5pm PST

Login
0 Cart { % include 'bold-options-hybrid-cart-item-count' % }
Login
Mon-Fri 9am-5pm PST
(360) 800-5535 Email Us
Search
0 Cart
(360) 800-5535

Send Us a Message

Search

HM Digital HM-200 portable pH meter displaying 7.3 pH, 75.0°F, and 1230 ppm.

HM Digital Hydromaster HM200 Portable - pH TDS EC Temp Meter

Official HM Digital Dealer Model: HM-HM-200
$339.99 USD$299.99 USD$339.99 USD
 $339.99 USD
starting from 0% interest financing from /mo.

Payment Options

Options:Pay in Four, Pay Monthly
Amount:Up to $1,500 (Pay in 4)
Up to $10,000 (Monthly)
Schedule:Bi-weekly to Monthly
Term:6 weeks, 12 or 24 months
Interest:0% to 35.99% APR*
Credit Check?Soft Check Only
Schedule:Bi-weekly to Monthly
Term:6 weeks, 6 or 12 months
Interest:0% to 35.99% APR*
Credit Check?Soft Check Only
Finance up to:$4,000
Must apply on a desktop device.
Schedule:Flexible
Term:Up to 36 months
Interest:Processing fee + interest
Lease-to-Own?Yes
Amount:$500 to $10,000
Looking to finance equipment under your corporation? Learn more about Business Financing
  • Simultaneously monitor 5 different water parameters on one high-resolution backlit screen
  • Onboard memory stores 20 historical readings to help you identify trends in your reservoir
  • AA battery power allows for easy testing across multiple locations without needing a wall outlet
  • View More Details

Earn 299 points for shopping and get $2.99 off your next order. Join Harvest Club for free.
Questions? Talk to a specialist. Mon–Fri, 9am–5pm PST
(360) 800-5535 Live Chat Available now
Free Shipping On Most Items* To the lower 48
Transparent Pricing Backed w/ price match guarantee
4.8/5 Rating 1938+ verified reviews
Secure Checkout SSL encrypted payments

Send Us a Message
VOLUME PRICING

Commercial & Bulk Purchasing

We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.

Commercial Inquiry

Contact Information
THROUGH THE Cultivator's LENS Hands-On Evaluation

Who This Is For

  • You are moving between multiple tanks or labs because you need clinical accuracy without the cost of several monitors.
  • You are adding the HM200 to your workflow because manual spot checking is too slow for high volume nutrient management.

What We Found

  • We prefer the AA battery design because finding replacements is much easier than hunting for specialty button cells.
  • The alert system is surprisingly bright, which is great if you are busy across the room with other tasks.

What Users Say

  • Users with multiple reservoirs say they save hours each week by carrying one meter instead of recalibrating several.
  • Growers who log data manually say the 20-reading memory makes it easier to catch trends before they cause issues.

HM Digital Hydromaster HM200 Portable - pH TDS EC Temp Meter

Maintaining the perfect balance of nutrients and water quality is the difference between a mediocre harvest and a legendary one. The HM Digital Hydromaster HM200 provides a portable yet powerful solution for monitoring the vital signs of your reservoir. Designed specifically for hydroponic enthusiasts and laboratory precision, this meter ensures your plants are always thriving in their ideal medium by tracking pH, EC, TDS, salinity, and temperature with clinical accuracy.

This versatile device bridges the gap between handheld pens and stationary monitors. While the HM Digital Hydromaster HM100 is excellent for fixed setups, the HM200 offers the flexibility to move between tanks or labs without sacrificing data integrity. You can explore our complete selection of HM Digital tools to find the perfect match for your scale of operation.

With its high-resolution LCD and programmable alert system, the HM200 empowers you to catch fluctuations before they stress your crop. Whether you are managing a complex drip system or a simple deep water culture, having real-time data at your fingertips is essential for professional results. For those seeking even more portability in a handheld format, consider the HM Digital Pro COM-300 as a secondary verification tool.

Features

🔔
Programmable Sensors

Set custom alerts to notify you immediately when water parameters drift outside your target range.

📈
Continuous Monitoring

Keep a constant eye on your system with sensors designed for round-the-clock water quality tracking.

💾
Memory Storage

Store up to 20 historical measurement readings to identify trends and optimize your nutrient schedule.

📺
Easy to Read

The large, backlit LCD displays three different parameters simultaneously for quick, at-a-glance checks.

🔋
Energy-Saving

Preserve battery life with an intelligent auto-shutoff feature that activates after five minutes of idleness.

🔌
Battery Operated

Ultimate portability with AA battery power, allowing for easy testing across multiple locations.

Specifications

Specification Value
Parameters pH, TDS, EC, Temperature, Salinity
pH Range 0.1 – 14.0 pH
Temperature Range 0.0 – 60.0 °C / 32.0 – 122.0 °F
TDS Range 0 – 9990 ppm
EC Range 0 – 10.00 mS
Resolution 0.1 pH / 0.1°C / 1 ppm / 0.01 mS
Accuracy pH: ± 0.1 pH, Temp: ± 1 °C, TDS/EC: ± 2 %
ATC Yes (Automatic Temperature Compensation)
Power Source 5V/1A or AA Batteries
Dimensions 4.3 x 7.9 x 1.3 inches
Weight 10 oz (Body) / 5 oz (Probes)

FAQs

What exactly does the HM200 measure?+

The HM Digital HM200 is a multi-parameter tool that tracks pH, Total Dissolved Solids (TDS), Electrical Conductivity (EC), Salinity, and Temperature.

Can this meter be used for continuous monitoring?+

Yes, the HM200 features a continuous monitoring mode, allowing you to keep the sensors active for ongoing water quality checks in your reservoir.

Does it have an alarm system?+

It features programmable alerts that allow you to set specific high and low limits for your water parameters. The device will notify you if levels drift outside these settings.

Is the sensor cable long enough for deep tanks?+

The unit comes equipped with a 24-inch shielded coaxial cable, providing ample reach for most standard hydroponic tanks and laboratory setups.

How many data points can the HM200 store?+

The device has built-in memory capable of storing up to 20 individual measurement readings, which is helpful for tracking your system's performance over time.

What type of batteries does it use?+

The HM200 is powered by standard AA batteries, making it highly portable. It can also be powered via a 5V/1A power source for stationary use.

Happy To Help

Questions About This Product?

Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)

Call (360) 800-5535

Why Trimleaf

Equipping home growers, craft producers, and commercial operations across North America since 2016.

10+
Years of Specialist Knowledge
4.8★
Over 1,900 Verified Reviews
50,000+
Growers Served
120+
Top Equipment Brands in Stock

You may also like