GR1 is a safety retroreflectometer launched by Retrosign, Germany. It supports ASTM, EN, EN471 and other standards. It can measure 30mm/15mm reflectance, the measurement time is 3 seconds, supports USB interface, and has an internal storage of 250000 data. It comes with standard calibration, RSC3 program, battery charger, Φ15mm small aperture, small support plate, lens cap, communication cable, user manual, CD/DVD version user guide.
This manual describes the GR1’s optical and safety parameters, including incident angle, aperture angles, and compliance with ASTM‑E‑1709. It also lists environmental limits such as operating and storage temperature ranges.
Physical dimensions, weight, and power requirements are detailed, along with contact information for Earth Products China Limited and other regional offices. The document is intended for users installing and operating the GR1 safety‑clothing system. This manual is written in Chinese.
| Measurement Angle | 0.29 |
|---|---|
| Light Source Aperture Angle | 0.1 |
| Receiver Aperture Angle | 0.19 |
| Operating Temperature | 07°C to +507°C |
| Storage Temperature | -152°C to +55°C |
| Length | 295 mm |
| Width | 83 mm |
| Height | 324 mm |
| Weight | 2.1 kg |
| Power Supply (main) | 230 V / 50 Hz |
| Power Supply (optional) | 110 V / 60 Hz |
The GR1 can operate from 07 °C up to +507 °C.