UniData Communication Systems 6527B, Manual

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Manual – Starflow QSD Model 6527B and 6537A
Unidata Manual - 6527B and 6537A Starflow QSD User Manual 17 01 2020.docx Page 4
Environmental
Operating 0°C to 60°C (water temperature)
Storage -20°C to 60°C
Humidity up to 100 % RH
Physical
Dimensions Approximately L 135 mm, W 55 mm, H 22 mm
Material Epoxy-sealed body, stainless steel mount
Weight 1kg with 15m of Cable
Cable 15 metre
Cable options User-specified, up to 50 metres
Instrument Wiring Table
Variants for Wiring are detailed below
Brown Wire Variant
Starflow QSD / Wire Colour Function / Signal Name
White SDI-12
Brown Power
Green Ground
Yellow A- (Modbus)
Pink B+ (Modbus)
Grey One-Wire *
Red Wire Variant
Starflow QSD / Wire Colour Function / Signal Name
White SDI-12
Red Power
Yellow Ground
Blue A- (Modbus)
Orange B+ (Modbus)
Grey One-Wire
*
* Use with Unidata 6515A QSD Barometric Reference Module
When Unidata 6515A QSD Barometric Reference module is connected, the instrument will
automatically handle the barometric correction and will report actual water level instead of water head
plus atmospheric pressure.
If your data logger has a barometric sensor, the data logger program must perform the barometric
correction OR the user can perform a post processing method to correct for barometric changes by
using barometric pressure data from a trusted source such as a weather department or another
barometer close by.
The 6515A QSD Barometer Reference module should be:
a) Mounted in an enclosure near to the data logger in a position protected from the elements.
b) The enclosure should be vented to allow the barometer sensor to be exposed to atmospheric
pressure variations.