Crison MultiMeter 44 Manual Del Usuario página 7

Free residual chlorine measuring channel (galvanic)
Measuring Range
Resolution
Measuring error
(± 1 digit)
Temperature compensation
Calibration
Relays
Analogical outputs
Free residual chlorine measuring channel (membrane)
Measuring Range
Resolution
Measuring error
(± 1 digit)
Calibration
Relays
Analogical outputs
Common specifications for all channels
Control mode
Data Logger
Relays
4-20 mA output
Communication
Display
Keypad
Power supply
mg/L (ppm)
mV
Temperature
mg/L (ppm)
mV
Temperature
mg/L (ppm)
mV
Temperature
mg/L (ppm)
Temperature
mg/L (ppm)
Temperature
mg/L (ppm)
Temperature
0 to 5
± 2000
0 to 60 ºC (32 to 140 ºF)
0.01
1
0.1
≤ 1%
≤ 2
≤ 0.4 ºC (≤ 0.72 ºF)
With Pt 1000 sensor integrated in the probe
Indirect or manual calibration readjusting any value of free chlorine
2 for limit. Switch N/O. Maximum load: AC < 250 V / < 3 A / < 750 VA
Two 4 to 20 mA outputs. One for chlorine and the other for
temperature. R. maximum 500 Ohms
0 to 20
5 to 45 ºC (41 to 113 ºF) (Only if a temperature probe Pt1000 is
connected)
0.01
0.1 (Only if a temperature probe Pt1000 is connected)
≤ 1%
≤ 0.4 ºC (≤ 0.72 ºF) (Only if a temperature probe Pt1000 is connected)
Calibration against a reference value obtained by DPD-1, readjusting
at any chlorine value in the measuring range
2 for limit. Switch N/O. Maximum load: AC < 250 V / < 3 A / < 750 VA
Two 4 to 20 mA outputs. One for chlorine and the other for
temperature. R. maximum 500 Ohms
ON/OFF and Proportional
Storage of 2000 data
1 sensors cleaning (N/O) and 1 alarm (N/C). Maximum load: CA < 250
V / < 3 A / < 750 VA
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.
RS 232 C (Optionally RS 485 and PROFIBUS)
Graphic, LCD, backlit, 128 x 64 dots.
Membrane, 7 keys. Material PET with protective treatment.
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.
Specifications
5