CT-2012 4-20 mA Control/Alarm/Indicator

* Input : 4-20 mA DC, linear.

* User can default the desired display value between -1999 to 9999 ( decimal point can be selected to DP1, DP2, DP3 ) and all the preset data will be saved into the memory circuit permanently.

* According the 4 to 20 mA input signal, user can preset the desire display value between -1999 to 9999 ( decimal point can select to DP1, DP2, DP3 ). Until set the display value, all the data will save into the memory circuit permanently

* When CT-2012 cooperate LUTRON's 4 to 20 mA transmitters  ( or any other transmitters if it build 4 to 20 mA output signal ), whole system will become the high performance Controller/Alarm/Indicator for following measuring functions : Humidity, Light, pH, Dissolved Oxygen, Conductivity, Vibration, Pressure, Sound, Temperature,  RPM, Hz, Load cell ( Weight, Force ), Potential ( Angle,  Level ). ACV, ACA, DCV, DCA, WATT....

* Easy to adjust the function factors by push button on the front panel.

* Control output : 2 points ( COM, NO ).

* Alarm output : 2 points ( COM, NO ).

* Control Relay will make action when the reading value reach to control value.

* Hysteresis value setting for control and alarm function.

* Large red LED display, high brightness and easy to read.

* Microprocessor circuit ensures high accuracy and provides special functions and features.

* DC 24V power supply output.

* RS232/USB computer interface.

* Power : 90 ACV - 264 ACV, 50/60 Hz.

* Standard 96 X 48 mm DIN case.

* Optional data acquisition software.

Display

* 4 digits red LED, 14 mm ( 0.55 inch ) digit height

* 4 indicators :

   PV ( process value ) indicator

   SV ( set value ) indicator

   Control out indicator

   Alarm out indicator

* According the 4-20 mA input signal, user can preset the desire display value between -1999 to 9999 ( decimal point can select to DP1, DP2, DP3 ). Until set the display value, all the data  will save into the memory circuit permanently

Input Signal

Linear, 4 to 20 mA

Accuracy

 @ 23 ± 5 ℃

Span

± ( 0.15% + 2d ) F.S.

Zero

± ( 0.1% + 2d ) F.S.

* F.S. : full scale

Circuit

Custom chip of microprocessor LSI circuit.

Sampling Time

Approx. 1 second.

External Power Supply

DC 24 V, 50 mA max.

Data Output

RS 232 PC serial interface.

Relay Output

Number

2 relays

Function

Relay 1 :

High/Low control relay.

Relay 2 :

High/Low alarm relay.

Max load

0.5 ACA/250 ACV

0.5 DCA/24 DCV

   * Do not apply the relay contact load current > 0.5 A, other wise the relay may be damaged permanently without

warranty.

Main Internal Function Selection

* Decimal point adjustment : DP1, DP2, DP3

* Low limit of range adjustment 4 mA = X X X X, min. value is -1999

* High limit of range adjustment 20 mA = X X X X, max. value is 9999

* Alarm function adjustment : High Alarm or Low alarm.

* Control function adjustment High control or Low control.

* Deviation of Alarm

* Deviation of Control

* Filter value  of display reading

* Offset adjustment.

* Gain adjustment.

* RS232 output unit code setting

Default of internal function :

Without advice previously, the function of CT-2012 will preset :

* 4 mA = 0 , 20 mA = 9999.

* High control mode.

* High alarm mode.

* RS232 output unit code = 0 ( no unit ) .

Front Panel Function Selection

* Control set-point value adjustment.

* Measuring value ( Process value ) offset. Use to offset the PV indication from the actual PV.

* Alarm set-point value adjustment.

Operating Temperature

0 to 50 ℃.

Operating Humidity

Less than 80% R.H.

Power Supply

90 to 260 ACV, 50/60 Hz.

Power Consumption

Approx. 3.5 VA/AC 110V.

Approx. 4.9 VA/AC 220V.

Weight

384 g/ 0.84 LB.

Dimension

DIN size : 96 x 48 mm.

Panel cut size : 92 mm x 46 mm.

Depth : 110 mm.

Accessories Included

Instruction manual...........................1 PC

Case holder with screw....................2 PCs

Optional Accessories

* Data Acquisition software, SW-U801-WIN.

* RS232 cable, UPCB-02.

* USB cable, USB-01.