omni instruments | sensors and data acquisition equipment

Sales & Technical Support

Need Help?

Graphtec Data Loggers

GL100 Petit Logger

GL100-WL Petit Logger

The Graphtec Petit Logger GL100-WL is an ultra-compact, modular data logging platform optimised for real-time remote telemetry and wireless field diagnostics. Sharing the exact same modular sensor-swapping top port as the standard wired model, the GL100-WL variant integrates an onboard W-LAN (802.11b/g/n) module. This turns the unit into an active wireless node capable of streaming synchronised micro-climate, power, or mechanical diagnostic data straight to PCs, tablets, and smartphones without requiring physical cable tethers.

Core Features & Technical Breakdown

  • Integrated Wireless Networking: Operates in dual W-LAN modes out of the box:

    • Access Point Mode: Connects a smartphone, tablet, or PC directly to the logger’s localised broadcast signal for fast field monitoring up to 10–20 meters away.

    • Station Mode: Logs the hardware directly into your facility’s existing corporate Wi-Fi network, routing live diagnostic parameters straight to a central server.
  • Plug-and-Play Sensor Architecture: Compatible with Graphtec’s full suite of quick-disconnect sensor compartments. Swap instantly between high-accuracy temperature/humidity grids, tri-axial acceleration sensors, UV/illuminance pods, and thermistor assemblies depending on your immediate testing parameters.
  • Real-Time Mobile Virtualisation: Streams live waveform trends and digits to Graphtec’s free iOS and Android mobile applications. Field engineers can review automated environmental parameters and adjust tracking options safely from their phones while the hardware is sealed inside a running machine or cleanroom enclosure.
  • Email Alert Capabilities: When linked to an internet-connected local station network, the GL100-WL can automatically send email alerts directly to site managers if a critical alarm limit is broken, providing instantaneous warning of a system failure.
  • Dual-Tier Storage Architecture: Built-in 4.9MB of onboard flash memory acts as a reliable temporary buffer, backed by a micro-SD expansion card slot supporting cards up to 32GB for heavy, continuous standalone remote logging.

Core Technical Specifications

  • Wireless Configuration: IEEE802.11b/g/n (2.4GHz band).
  • Sampling Interval Rates: Configurable from 0.5 seconds up to 30 seconds, or 1 minute up to 1 hour (varies slightly based on selected sensor head module).
  • Power Configuration: Runs via 2 x AA batteries, micro-USB bus line, or an optional AC adapter block.
  • Physical Footprint: Ultra-lightweight at approximately 90g compact dimensions of 66 mm X 100 mm X 27 mm.

Applications

Placed inside ceiling ductwork or air handling systems to stream live climate telemetry out to a technician's smartphone at floor level during system optimisation.
Tucked into engine bays or vehicle cabins to broadcast real-time acceleration, cabin temperature, or electrical power draw to engineering laptops inside a chasing vehicle.
Arrayed across sprawling greenhouse rows to monitor multi-point micro-climates, streaming ambient humidity and UV data back to a main nursery office over Wi-Fi.
Mounted to rotating machinery or high-vibration equipment to wirelessly monitor continuous structural shifts and temperatures without risky, spinning cable wraps.

Frequently Asked Questions

▶ Q: Can I use the GL100-WL as a standard wired USB logger if Wi-Fi isn't working?
A: Yes, absolutely. The GL100-WL retains the physical micro-USB port on the base. If wireless networking is turned off or unavailable, you can plug it directly into any PC using a standard cable to program and download data via the APS desktop software.
▶ Q: How severely does using the wireless feature affect battery life?
A: Wireless transmission increases power draw compared to the standard USB version. When running on 2 x AA alkaline batteries with WLAN active and logging at 1-minute intervals, expect around 2 to 7 days of continuous remote operation depending on your network settings. For long-term permanent streaming, utilising micro-USB bus power or an external AC wall adapter is highly recommended.
▶ Q: What mobile operating systems are supported by the wireless app?
A: Graphtec provides free, dedicated application software for both Android (via Google Play) and iOS devices (via the App Store), enabling fast, native tablet and smartphone monitoring.
▶ Q: Can multiple smartphones connect to a single GL100-WL simultaneously?
A: In Access Point Mode, it supports a single 1:1 direct connection to a smart device. In Station Mode, the logger sends its data out onto the wider local area network, allowing multiple authorised PCs or network terminals to monitor its telemetry stream via the APS platform.
GL100-WL

GL100-WL

GL100-WL Petit logger main unit with Wireless LAN connectivity. 4.9MB internal memory and micro SD memory card slot, (max file size 1.9GB). Backlit monochrome display (128Ç?64 dot resolution) displays measured values and settings. 2.4GHz wireless frequency for remote connection to wireless LAN, GL240, GL840 or Smart phone devices. Power Supply 2 x AA Alkaline batteries or USB bus-power. Dimensions 66 x 100 x 27mm.

£395.00
Add to Basket More Info
GS-DPA

GS-DPA

GS-DPA Dual Port Adapter Input Module. Allows for 2 sensors to connect to a single GL100. Compatible sensors are GS-TH (Temp & RH sensor), GS-LXUV (Illumination/UV sensor) and GS-CO2 (CO2 sensor).

£95.00
Add to Basket More Info

CONTACT US

8:30am to 5pm Monday to Thursday
8:30am to 3pm on Friday.

A real person will answer the phone and deal with your enquiry.
You can also click the button below and fill in our online enquiry form.

Technical Sales

We are here to help

Need help with your products or have a question for us on our custom systems? Use the form below to send us a message and our experts will be in touch to help.

Call us on +44 (0)1382 443000