The RX250AL Receiver logger is the heart of a GenII logging system. Because the RX250AL is responsible for receiving and storing the data, it is not necessary to have a PC permanently connected. The built-in battery means data logging is not interrupted even if there is a temporary AC mains failure. Multiple RX250ALs can be used for wide area coverage. Alarms (including SMS alarms) come as standard. (To use SMS alarms, a GSM modem is required).
RX250AL
Ethernet/internet adaptor
The kit consists of the following:
When installed, access to the Squirrel can be achieved via a virtual COM port connection, using an ethernet/internet connection.
Moxa
GSM Modem kit (logger / receiver side)
The kit consists of the following:
When installed, access to the Squirrel can be achieved via a GSM network.
Note: GSM connectivity is not available with Darca Lite software.
A SIM card from the Network Service Provider is required.
The kit is necessary for text messaging functionality.
GSMSQ
GSM Modem kit (PC side)
The kit consists of the following:
GSMPC
MPGSMextend
RS232 to RS485 interface converter
This unit converts the standard RC250 or Squirrel RS232 interface to a RS485 interface; thereby allowing equipment with the RS485 interface to communicate with the receiver/logger.
If you require a new logger to work with this interface, please specify at the time of ordering. Existing loggers may need a firmware update to work with the RS485 interface - please contact Eltek for advice.
Squirrels using this interface must be mains powered.
SQ/RS485
UHFflexi/SMA standard quarter wave whip
LW-ANT/SMA lightweight indoor or external dipole antenna
Yagi directional antenna
Number of channels: | Up to 250 |
Number of transmitters: | Up to 125 |
Ambient temperature: | -10 to +55°C |
Humidity: | Up to 95% (non condensing) |
Power supply: | 12V DC at 500mA powered using type MP12U, (input 100-250V AC) |
Built-in batteries: | 6 x AA Ni Mh battery |
Backup battery life: | Typically 24 hours |
Memory: | 247,000 readings expandable to 2,000,000 |
Clock accuracy: | 1 second/day at 20°C |
Dimensions: | D 60mm x W 180mm x H 120mm |
Weight: | 1Kg inc. batteries |
Case material: | Scratch resistant Nextel coated ABS |
PC/modem interface: | RS232C up to 38.4K Baud |
Receiver: | Crystal controlled |
Sensitivity: | UHF: -117dBm |
Antenna connector: | SMA 50 ohm female |
Antenna: | Quarter wave standard, lightweight dipole optional |
Communication options: | USB, GSM and Ethernet |
Alarm: | RX250AL: SMS + 1 contact closure, RX250ALD: SMS + 2 contact closures |