Lowell Instruments | See more Data Loggers | See more Environment Data Loggers

Lowell TCM-4 Shallow Water Tilt Current Meter

ORDER ME IN
Product code: TCM-4

Backorder Now, once ordered your item will dispatch before the 16th of July 2025, call 1300 737 871 (NZ 0800 737 871 to confirm).

The TCM-4 is a current meter with data logger that is designed to operate off shallow water such as coastal ponds, bays, rivers and tidal flats.

-Measures current using the drag-tilt principle.

-Only 10 inches (25 cm) long and is able to operate in less than one foot of water.

-Contains a 3-axis accelerometer and 3-axis magnetometer for measuring tilt and bearing. 

Read more | Need help? 3 Hour Business Reply

$3,486.00 AUD + GST
 $3,834.60 AUD Inc. GST
The TCM-4 is a new current meter that is ideal for measuring water velocity in shallow coastal ponds, bays, rivers and tidal flats and other locations where the depth is too shallow for the TCM-1 current meter. The TCM-4 is only 10 inches (25 cm) long and is able to operate in less than one foot of water.
The TCM-4 Shallow Water Tilt Current Meter measures current using the drag-tilt principle. The logger is buoyant and is anchored to the bottom via a short flexible tether. Moving water tilts the logger in the direction of flow. The TCM-4 contains a 3-axis accelerometer and 3-axis magnetometer for measuring tilt and bearing. The resulting orientation data is converted to current by applying calibration coefficients.
Windows software is used to configure the TCM-4 for deployment and to convert binary data to text files. The built-in MAT-1 data logger includes a USB communication interface, a microSD flash memory card, and a long-life lithium battery.
Features
- Measures water velocity for a fraction of the cost of an acoustic meter
- Operates in as little as 28 cm (11 inches) of water
- Tilt compensated compass for bearing measurements
- Simple, rugged, low maintenance design
- User replaceable lithium battery allows continuous 1-minute current measurements for more than a year
- 8 GB memory card virtually eliminates memory concerns
- Temperature sensor accurate to +/-0.1C
- USB 2.0 with standard cable and drag and drop data file offload

Specifications

Speed (Recommended Range):
- Range: 0 to 50 cm/s
- Accuracy: 3 cm/s + 3% of reading
- Resolution: 0.1 cm/s
Speed (Maximum Range): 
- Range: 0 to 75 cm/s
- Accuracy: Not Specified
- Resolution: 0.1 cm/s
Temperature: 
- Range: -5 to 30 C / -20 to -5, 30 to 5 C
- Accuracy: 0.1 C / 0.2 C
- Resolution: less than 0.005 C / less than 0.01 C
Electronics: 
- Memory: 8 GB microSDHC flash card (standard)
- Communications: Full speed USB micro-B port
- Battery Type: 3.6 V, size A, user replaceable lithium (from Lowell Instruments)
- Battery Life: Months to years depending on recording rates
- Internal Clock: less than 1 minute per month
Operating Modes: 
- Start and Stop: Start and Stop at user defined times
- Burst Mode: Variable rate logging at user defined interval
- Recording Rate Current: 64 Hz to 1 sample per hour
- Temperature: 1 Hz to 1 sample per hour
Mechanical: 
- Depth Rating: 30 m (100 ft)
- Diameter: 2.54 cm
- Length: 25.4 cm
- Weight 98 g
- Construction Housing: Carbon Fiber and Epoxy Laminate with PVC & PETG fittings, 316 Stainless Steel Screw and Buna and EPDM O-rings.
Software: 
- User Interface: Windows Compatible Software Download
- USB: USB 2.0 compliant MSC and CDC Classes
- Firmware: Field upgradable via USB cable

Our Reviews



Recently Viewed

Instrument Choice will respond in 3 business hours

Get in touch with our expert scientists Instrument Choice.

In less than 3 business hours you will have an answer from our expert scientists.

Our Australian experts have access to a huge range of products from national and international suppliers.

If for any reason you have trouble using this form please email the following address and your enquiry will still receive a response from a scientist within 3 business hours: scientists@instrumentchoice.com.au