CONDUCTIVITY CONTROLLER CC-421

CC-421 is a stationary device used for continuous conductivity and temperature measurements in clear water or sewage.
The controller is available in three versions:

equipped with two relays;
equipped with 0 ÷ 20 mA or 4 ÷ 20 mA current loop;
equipped with RS-232 output – current results may be stored in PC memory with use of delivered software

The device enables 1-point calibration of the measuring cell by entering the constant K value or in standard solution with value set in the device's memory.
It is possible to calibrate it without the need of disconnecting the outputs.

Characteristic features:

Meter is equipped with a backlit LCD display.
4 sub-ranges switched automatically.
Possibility to choose between two versions of the device: conductivity or salinity measurement version (converted to the NaCl – up to 150 g/l).
Converting conductivity into salinity based on the actual characteristics, not on a constant coefficient.
Automatic temperature compensation.
Constant temperature α coefficient 2 %/°C.
Reference temperature: 25 °C.
24 months of warranty, quick warranty and after-warranty service.

On special order available meter which may collect up to 8000 data sets with chosen time interval. The available values of the interval are 1, 2, 5, 10, 15, 30 and 60 minutes.
If the memory capacity is used up the oldest result is deleted and replaced with a new one. The collected or actual results may be transferred to a PC with use of the USB connector. Delivered in the set software enables the transmission of data including measured result, measured temperature, time and date. Stored results can’t be viewed on the meter’s display, except the minimal and maximal values in given time.

The controller may cooperate with GXZ-1t immersible head or with GXP-1t flow head and GXP-01M head for measurements in outflow. The cells are selected depending on the measurement conditions.

TECHNICAL DATA

Function	Conductivity	Salinity	Temperature
Range	0 ÷ 199.9 mS/cm, 4 subranges - autorange	NaCl 0 ÷ 150 g/l	-50.0 ÷ 199.9 °C
Accuracy (± 1 digit)	±0.25 %*	±2 %*	±0.1 **
Temp. compensation	-5 ÷ 70 °C	-5 ÷ 70 °C	-
α coefficient	constant 2 %/°C	constant 2 %/°C	-
K constant	0.010 ÷ 1,999 cm^-1	-	-
Temperature sensor	Pt-1000
Memory***	8000 data sets collected with chosen time interval
Relays' parameters	2A/250VAC/30VDC
Isolation class	according to PN-83/T-06500
Radioelectric interference	N level
Power supply	12 V / 100 mA power adapter
Dimensions (mm)	L = 149; W = 82; H=22
Weight	220 g

*	The accuracy of the meter only.
**	The accuracy of the meter only. The total error includes the meters and probe's accuracy. In the range 0 ÷ 100 °C the acceptable error of the probe with Pt-1000B resistor: ±0.8 °C , with Pt-1000A resistor: ±0.35 °C.
***	Model with memory available on special order.