Ranges
Resolution
Inputs
Temp. Comp.
Digital output
Analogue output channel-1: 4...20 mA, max. load 350 Ω, program-
Relays
Display
Keys
Ambient temp.
Rel. Humidity
Power supply
Cabinet
Dimensions
Weight
Safety
Each time the instrument is switched on, it will check briefly its internal
calibrations while showing all functions of the display and the software-
version. An error message appears when sonething is wrong.
Conductivity
cc = 0.1 cm
: 0.01 µS/cm ... 20 mS/cm
-1
cc = 1 cm
: 0.1 µS/cm
-1
cc = 10 cm-1: 1 µS/cm
Temperature
0...100°C
0.01 µS, 0.1°C or 0.5% of reading
2 inputs for conductivity cell and Pt1000 (or Pt100)
- independent mode (operates as 2 independent
controllers)
- AND mode (relays will only close when both inputs
exceed a pre-set alarm level)
- OR mode (relays will close when one of the inputs
exceeds a pre-set alarm level)
- differential mode (reads and controls on the
difference between both inputs)
automatic with Pt1000 (or Pt100) or manual
programmable RS232, 150...4800 b/s, for bi-directio-
nal communication between other R300's, computer
or printer
mable 8 bit D/A with adjustable span
channel-2: 4...20 mA, max. load 350 Ω, program-
mable 8 bit D/A with adjustable span
3 programmable solid-state relays for high /low/fail
alarm, voltage-free contacts max. 250 V~/0.5 A
8 digit/character, 12.5 mm LCD display, shows
readings & messages
4 tactile membrane keys
4...40°C
0...90 % (non-condensing!)
190-250 VAC, 50/60 Hz, max. 4 VA
splashproof (IP65) cabinet, internally shielded
against RF interferences, for wall mounting with 4
screws
200 x 120 x 90 mm
1.2 kg
- non volatile memory, protected against any kind of
interference
- resets automatically to measurement after power
down, interference or unauthorised manipulation
- returns automatically to measurement after power
down, interference, unauthorised manipulation or
when no key is pressed for 5 minutes
... 200 mS/cm
... 2000 mS/cm
Specifications
2