vanwaltDataSlave

The vanwaltDataSlave is a wireless telemetry system. It turns any sensor into a wireless unit. The vanwaltDataSlave can accept an input from sensors which measure single or multiple parameters. Interfacing with a multitude of sensors whether by MODBUS; SD1-12, pulse count or a cabled connection.

Inside the DataSlave is a radio “tile” which enables it to communicate with a PC or a vanwaltDataHub wirelessly over a considerable distance, up to 10 km line of sight. It sits at location and transfers sensor measurements to your desktop. If a connected sensor has memory then the vanwaltDataSlave transmits the data from the sensor’s internal memory. If the sensor does not have memory then the DataSlave collects the data from the sensor and stores it inside its own onboard memory. Designed by and manufactured in the UK under license from Van Walt Ltd it is ideal for difficult or restricted access sites. Up to 30 vanwaltDataSlaves can be daisy chained together with an automatic, wireless connection to a vanwaltDatahub. Uniquely the vanwaltDataSlave will operate with multiple sensors across industry sectors. It is licence free, subscription free so has no on-going annual charges.

Contact Van Walt

Advantages

The vanwaltDataSlave turns any sensor into a wireless unit. It sits at location and transfers sensor measurements using radio frequency up to 10 km line of sight. If the connected sensor has memory then the vanwaltDataSlave transmits the data from the sensor’s internal memory. If the sensor does not have memory then the DataSlave collects the data from the sensor and stores it inside its own onboard memory.

  • Data logging with wireless data recovery
  • Cost-effective for telemetered networks
  • License free
  • Subscription free
  • Long range
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vanwaltDataSlave

Call Van Walt
+44 (0) 1428 661 660 Call Van Walt
+64 (0)3443 5326 Call Van Walt
+27 21 518 1347

vanwaltDataSlave Equipment Options:

Applications

  • Difficult to access areas like:

  • Motorway Central Reservations
  • Railway Embankments
  • Nuclear Power Stations
  • Airports
  • Sites of historical interest
  • Contaminated land

  • For monitoring:

  • Environmental research
  • Flood risk monitoring
  • Property care and protection
  • Well, tank, tidal water level monitoring
  • Wetland and Peat Bog monitoring & surveys
  • River, stream, reservoir gauging
  • Surface & storm water runoff monitoring
  • Resource administration
  • Saltwater intrusion monitoring & tracking
  • Agricultural runoff studies
  • Discharge monitoring
  • Single or multi well tracer testing
  • Brackish Water tracking
  • Waste water treatment discharge tracing
  • Rain water reservoir monitoring
  • Refineries & tank farm safety monitoring
  • Tank roof rain water monitoring
  • Industrial plant waste water monitoring
  • Downstream checking of the oil separators in water treatment processes
  • Safety & environment monitoring in Petrol Filling Stations
  • Detecting & identifying pollutants in rivers, lakes, canals or marinas
  • Water table control pit monitoring & channelling protection
  • Final outflow monitoring for groundwater remediation projects
  • And more…

Accessories

Battery Pack
Developed & manufactured by Van Walt Ltd to extend the battery life of the vanwaltDataSlave
Config Tool
Used to program the vanwaltDataSlave

Specifications

Enclosure
Dimensions
125 x 125 x 80 mm + Antenna
Rating
Sealed to IP68 (BS EN 60529:1992)
Material
Diecast Aluminium, nylon coated
Temp Range of Seal
-60 °C to 240 °C
Enclosure Wall & lid thickness
3 mm
Electrical
Parameter
Min
Typ
Max
Unit
Operating Temperature
-301
+25
+85
°C
Supply Voltage Sensor External Power Input
9
12
15
V
Supply Voltage Internal 2 x AA Batteries
1.8
3
3.6
V
Sensor Current Consumption Internal Power
–
–
75
mA
Sensor Current Consumption External Power
–
–
1
A
RF Output Power
1
–
100
100mW
General Characteristics
Parameter
Description
Min
Typ
Max
Unit
All operating conditions
Receive Current
–
15
20
mA
Sleep Current
–
3.7
5
µA
Channel Spacing
25
25
200
kHz
Over Air Data rate
200
2400
100,000
bps
Frequency Accuracy
–
–
±0.5
ppm
RTC Accuracy
–
–
±5
ppm
UART Baud Rate
100
9600
230,400
bps
Frequency 869.1 – 869.4 MHz
RF Output Power
–
–
25
mW
Transmit Current
–
–
67
mA
Frequency 869.4 – 869.65 MHz
RF Output Power
–
–
100
mW
Transmit Current
–
–
115
mA
Frequency 869.65 – 870.0 MHz
RF Output Power
–
–
25
mW
Transmit Current
–
–
67
mA
Frequency 902 – 928 MHz
RF Output Power
–
–
25
mW
Transmit Current
56
62
67
mA
Frequency 902 – 928 MHz
RF Output Power
–
–
100
mW
Transmit Current
94
102
110
mA

1 Operating temperature range will be determined by the battery. Alkaline AA batteries will limit the unit to -20 °C +54 °F

Receiver Characteristics
Parameter
Min
Typ
Max
Unit
Sensitivity at 200 bps for <1 X 10-3 BER
–
-124
–
dBm
Sensitivity at 2400 bps for <1 X 10-3 BER
–
-117
–
dBm
Sensitivity at 100,000 bps for <1 X 10-3 BER
–
-102
–
dBm

Under good line of sight conditions, it should achieve a range of 10km at its lowest data range. Range is most affected by the terrain and antenna height.

Operating Frequency Range
Country
Min
Max
Unit
America
902.025
927.975
MHz
Australia
915.025
927.975
MHz
New Zealand
921
926
MHz
UK & Europe
869.1
869.975
MHz
Sensor External Power Connector BL5.08/2
Pin
Signal
1
9-15V DC
2
oV

For external 12 V Battery when using higher power sensors

Modbus/SDI – 12 Connector BL5.08/6
Pin
Signal
1
Switched +12V DC
2
Modbus D-
3
Modbus D+
4
SDI-12
5
oV
6
oV

The supply to the sensor will be switched on and off as required to save power

Pulse Counter Input BL5.08/3
Pin
Signal
1
Pulse Count Input
2
oV
3
oV

This is an optional connector for future expansion. It can count on positive or negative edges and detects a closure to ground.

Compatibility

Resources

Videos

Manuals & Downloads

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+44 (0) 1428 661 660 +64 (0)3443 5326 +27 21 518 1347