A755 SDI12 / ModBus GPRS Telemetry Datalogger
- 40 channel SDI12 / ModBus Channels Plus 2 Digital Inputs (ie Rain Gauge /Flow Meter)
- Add telemetry capability to Campbell Scientific Dataloggers Using ModBus - any input into Campbell Scientific logger
- Multiple power options Micro-Solar Panels, Lithium batteries, Rechargeable batteries, AC/DC mains power
- Send commands from RTU to RTU GSM/GPRS or UHF Radio
Overview
The A755 GSM/GPRS SDI12/ModBus telemetry data logger is an extremely compact, rugged and low-power RTU designed to provide users of SDI-12 and ModBus sensors with an inexpensive and reliable unit for logging and transmitting environmental data. It has a large memory, is extremely easy to install and setup, has IP-67 connectors, a quad-band Motorola GPRS modem, and much more.
Manufactured by: Adcon Telemetry
Model: A755 SDI12 / ModBus GPRS Telemetry Datalogger
Services offered for this product
- Sales
- Rental
- Installation
- Calibration
- Maintenance
Applications
Weather stations
Soil moisture monitoring
Science, research and development
Water quality monitoring
Environmental monitoring
Accepts up to 40 ModBus parameters/sensors
Specification
| Mechanics: | |
| Case | Aluminum, powder coated |
| Protection Class | IP-67 |
| Dimensions and Weight | 160 x 60 x 80 mm / 6.3 x 2.4 x 3.1 inches 1150g / 2.4lb. |
| Connectors for Sensors and Power | Made in Germany by Binder IP-67 protection class Sockets: brass, nickel plated, with gold plated socket contacts Protective cap 2 x M9 female 7-pin to sensor 1 x M9 female 5-pin to power |
| Antenna Connector | TNC with external seal, water tight, Made in Germany |
| Mounting | Mast mounting bracket integrated |
| Operating Temperature | -20°C ... +65°C / -4°F ... 149°F -30°C ... +75°C / -22°F ... 167°F extended temp. range upon request |
| Logger: | |
| Sensor Input | 1 for standard SDI-12 sensors; up to 40 values can be addressed |
| Counter Inputs | 2 for standard reed contacts; electronically debounced, e.g. for rain gauges; max frequency up to 30 pulses per second; min. pulse length 17ms, min. break time 17ms |
| Digital I/O Ports | 1 x 3V TTL 1 x 5V TTL Both I/Os can be configured as either inputs or outputs |
| Memory | 2MB for up to 500.000 readings |
| Data Transmission: | |
| Frequencies | 900 & 1800 MHz (Europe) and 850 & 1900 MHz (Americas) |
| Modem | Motorola G24L Motorola G24 and H24 upon request |
| SIM-Cards | Small footprint |
| Security | SIM-Cards are PIN-Code protected |
| Connection Types | - GSM: CSD Circuit Switched Data - GPRS |
| GPRS Connect Frequency | User selectable: - permanent connection - connect from 1 x per minute to 1 x per day |
| Antenna | Omnidirectional, +2dBi, TNC, waterproof |
| General: | |
| Power Supply | Internal 6.2V battery, charged by solar panel or mains adaptor; optional: non-rechargeable Lithium-Thionyl battery (to operate the RTU w/o solar panel) |
| Battery | Panasonic High-Temperature Industrial Grade NiMH battery, 3100mAh |
| Type Approvals | FCC, R&TTE, CE, Industry Canada, ACMA Australia |
