Tramex DL-RHTA Feedback Datalogger – ambient
The DL-RHTA logs ambient relative humidity and temperature. It is the ambient version of the Feedback DataLogger – for monitoring room conditions during drying, storage, acclimatisation or a building survey, rather than in-situ measurement inside a slab.
The logger and the Tramex Meters app record up to 100,000 data point entries for relative humidity, temperature, dew point and grains per pound, sent wirelessly over Bluetooth BLE to a mobile device. In the app you can view live readings, thermal conditions and psychrometric charts, and create and export spreadsheets, charts and reports.
The Feedback DataLogger requires the Tramex Meters app and a compatible iOS or Android device.
Features
- Bluetooth BLE for use with mobile devices
- Up to 100,000 data point entries
- Instant set up and start modes
- Ambient relative humidity and temperature logging
- Optional contact temperature probe for surface temperature, estimated contact RH and contact delta temperature
- Adjustable interactive chart, spreadsheet, report and export functions
- Connectivity up to 50 metres for data downloads
- Wall mounting and tripod stand included
Specifications
From the Tramex DL-RHTA data sheet.
| Size | 100 x 90 x 35 mm |
| Weight | 100 g |
| Construction | ABS enclosure |
| Power | 1 x AA 1.5 V battery |
| Memory | 100,000 data point entries |
| Logging interval | Adjustable, 10 minutes to 1 hour |
| Transmission range | Up to 50 m line of sight, Bluetooth Low Energy 4.2 |
| RH sensor | 0 to 100% RH; ±1.5% RH (0 to 80%), ±2.0% RH (80 to 99%) at 25 °C; resolution 0.1%; drift under 0.25% RH per year |
| Temperature sensor | −20 °C to 70 °C, ±0.1 °C; drift under 0.03 °C per year |
| Contact temperature probe (optional) | −30 °C to 80 °C, ±0.5 °C |
| Certification | CE (EN 61326-1), FCC Part 15, RoHS |
DL-RHTA or DL-RHTX?
The DL-RHTA logs ambient conditions and accepts the optional contact temperature probe. The DL-RHTX does the same and also takes Hygro-i2 and RH wand probes, so it can perform in-situ testing to ASTM F2170 and BS 8201, 8203 and 5325. If the logger only ever sits in a room, the RHTA is the right unit. If it may need to log inside a slab, the RHTX is.
Documents
Frequently asked questions
Can I add RH probes later?
No. In-situ RH probe capability is what distinguishes the DL-RHTX. If in-situ logging is a possibility, buy the RHTX rather than planning to upgrade.
Why log rather than spot-read?
A single reading proves the conditions at the moment you took it. A log proves what happened overnight, over a weekend, and while nobody was on site – which is what a builder, insurer or client disputing a drying claim will ask about. Continuous data is evidence; a clipboard entry is an assertion.
Does it need to stay in Bluetooth range?
No. The logger records independently and holds the data until you return and download it. Range matters when you collect the data, not while it is logging.
Is the app free?
The Tramex Meters app is a free download for iOS and Android. You need a compatible device to set up the logger and retrieve data.
Not sure how many loggers a job needs? Contact Carpet Cleaners Warehouse and we will help you size it.
