● Display measurement values, with optional ranges from -9999 to 9999 corresponding

● Select the decimal point position for the displayed value

● Input current value 0/4-20mA

Can provide DC power supply for two-wire transmitters

● Single input or differential input

● Measurement units can be selected

● Set the range of measurement

● Select software filtering function

● Switch control and PID regulation function

● PFM/PWM or 4-20mA regulation control function

Two control relays are used for upper and lower limit control functions

Provide upper and lower limit alarm function for measured values

The normally open and normally closed state of the alarm relay contacts is optional

● Output range and input range linkage

● Analog output value 4-20mA/0-20mA optional

● Activate, hold, and alarm functions through two external contacts

● Automatic and manual automatic cleaning control functions

This instrument is suitable for dual channel deviation measurement and control

● Cooperate with two identical measurement signal inputs of the same range

The signal of the input 0/4-20mA transmitter is commonly used for measuring the deviation of detection values before and after the process.

range

-9999 / +9999This instrument can set the maximum and minimum values of the measuring range and the position of the decimal point arbitrarily.

Measurement unit

Users can choose one of the following suggested measurement units:%, NTU, FTU, mg/l, g/l, ppm, μ S, mS, pH, mV, or user-defined units

display

The multi line graphic display screen can display all measurement values and provide users with menu information for setting, various function settings, and other normal operation information.

key

This controller is designed with buttons that allow for direct zero and sensitivity calibration, as well as control point setting.

MODE

The instrument can be freely selected in automatic, measurement, or simulation mode, making it easy to start or maintain operations.

Two level filtering software

Users can set up two-stage filters to obtain stable readings and respond faster to changes during the measurement process.

Two analog outputs

The controller provides two analog outputs, which can correspond to any input signal. The 0/4~20mA current output can correspond to any value of the two ranges, and the analog output can also be used for PID control or measurement value transmission.

Dual on/off regulator

Two sets of relays can be set separately, and users can define their corresponding input signals and set any control point within the range.

PIDoutput

By simulating the output to complete PID control, the instrument will display the control value, and users can also choose to set any relay to FM control (pulse frequency modulation) or WM control (pulse width modulation).

call the police

This relay is used for measuring upper and lower limit alarms. When the measured value exceeds the alarm value, the relay action is triggered, and it can also be controlled through logic input.

Logic Input

Two passive input contacts can trigger a hold or alarm state.

Automatic cleaning function

There is another set of relays specifically designed to control external devices to automatically clean sensors, which can be programmed through the controller's menu.

universal power supply

85 ~264 Vac， 50/60 Hz. Other power supply options: 9~36 Vdc or 12~24 Vac, 50/60 Hz

Easy to install

All 6587 series controllers have an IP65 protection level and are suitable for wall mounted installation. They can also be used for track installation or on-site pipeline installation with corresponding installation accessories. The 7687 series provides an IP65 front protective panel and a user preferred panel mounted instrument mounting housing.

Compatibility and flexibility

This controller is compatible with all transmitters with current output in our company, and can also be used with any 0-20 mA or 4-20 mA output transmitter or sensor for all applications.

input

4-20 mA, 0-20 mA

Active or passive signal

Single or dual differential input

Power supply for passive transmitters

24Vdc (50 mA max)

midnight

±10 %Sensitivity: 12.5%~250%

resolution

1 Digital display tube

accuracy

0.2 %

repeatability

0.1 %

Nonlinear

0.1 %

Dual filtering software

0.4 ÷ 50.0Seconds are used for minimum and maximum changes

Dual channel analog output

0-20 mA / 4-20 mA Rmax 600

Dual control point HI/LO

ON/OFF - PFM - PWM， SPST relay

lag

0 ÷ 10% delay: 0 ÷ 100.0 seconds

call the police

SPDTRelay with delay of 0~100.0 seconds

Self cleaning function

Turn off/automatic cleaning/manual cleaning

SPDTRelay repetition time

0.1 ~ 100.0hour

clean time

1.0 ~ 60.0second

HOLD

0.0 ~ 20.0minute

SPSTContact with SPDT relay

220V - 5 AResistive liability

operate temperature

-10 ~ 60°C

humidity

95%No condensation

Power supply

85 ~ 264Vac - 50/60 Hz 9 ~ 36Vdc, 12 ~ 24Vac (Optional 091.42x)

Terminal Block

Plug and unplug

weight

1360 g (CL 6587) 450 g (CL 7687)

casing

ABS, IP 65

Protection level

(CL 6587)Metal, IP 65 only for front panel (CL 7687)

size

256x230x89 mm (CL 6587) 98x98x104 mm， 90x90x95mm panel opening (CL 7687)