Crison 44 - Free residual chlorine measuring channel (galvanic); Free residual chlorine measuring channel (membrane)

5
Specifications
Free residual chlorine measuring channel (galvanic)
Measuring Range
mg/L (ppm) 0 to 5
mV ± 2000
Temperature 0 to 60 ºC (32 to 140 ºF)
Resolution
mg/L (ppm) 0.01
mV 1
Temperature 0.1
Measuring error
(± 1 digit)
mg/L (ppm) ≤ 1%
mV ≤ 2
Temperature ≤ 0.4 ºC (≤ 0.72 ºF)
Temperature compensation With Pt 1000 sensor integrated in the probe
Calibration Indirect or manual calibration readjusting any value of free chlorine
Relays 2 for limit. Switch N/O. Maximum load: AC < 250 V / < 3 A / < 750 VA
Analogical outputs
Two 4 to 20 mA outputs. One for chlorine and the other for
temperature. R. maximum 500 Ohms
Free residual chlorine measuring channel (membrane)
Measuring Range
mg/L (ppm) 0 to 20
Temperature
5 to 45 ºC (41 to 113 ºF) (Only if a temperature probe Pt1000 is
connected)
Resolution
mg/L (ppm) 0.01
Temperature 0.1 (Only if a temperature probe Pt1000 is connected)
Measuring error
(± 1 digit)
mg/L (ppm) ≤ 1%
Temperature ≤ 0.4 ºC (≤ 0.72 ºF) (Only if a temperature probe Pt1000 is connected)
Calibration
Calibration against a reference value obtained by DPD-1, readjusting
at any chlorine value in the measuring range
Relays 2 for limit. Switch N/O. Maximum load: AC < 250 V / < 3 A / < 750 VA
Analogical outputs
Two 4 to 20 mA outputs. One for chlorine and the other for
temperature. R. maximum 500 Ohms
Common specifications for all channels
Control mode ON/OFF and Proportional
Data Logger Storage of 2000 data
Relays
1 sensors cleaning (N/O) and 1 alarm (N/C). Maximum load: CA < 250
V / < 3 A / < 750 VA
4-20 mA output
230 V and 115 V instruments: 4-20 mA signal is galvanically isolated
from mains ground.
24 V instrument: 4-20 mA signal is not galvanically isolated from
mains ground.
Communication RS 232 C (Optionally RS 485 and PROFIBUS)
Display Graphic, LCD, backlit, 128 x 64 dots.
Keypad Membrane, 7 keys. Material PET with protective treatment.
Power supply
230 V AC ±10 %, 45-65 Hz 10 VA (standard version)
24 V AC/DC ±10 %, 45-65 Hz 10 VA (standard version)
115 V AC ±10 %, 45-65 Hz 10 VA (under demand)
Overvoltage category: II.