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::
Signal Isolators / Convertors

  • Time Proven High Precision Electronic Design
  • Manufacturing & Supplying since last 14 years
  • Accuracies upto 0.1% also achievable
  • Opto & Galvanic Isolators
  • ???? of 1500V DC
  • Input : Predefined
  • O/P : Predefined, Max 4 nos.
  • Lan incorporate Non-Standard Signal I/P <- O/P
  • Display / Bar graph facility optional
  • 230V AC / 110V AC / 24V DC
  • DIN RAIL & WALL mount enclosure
  • Supplying to the most reputed names like ABB, Alstan, GAIL, Grasim, Dept. of Atomic Energy, Atomic Power Stations and many others
  • Totally service / maintenance free

> Introduction ::

Pantech's Signal Isolator, model 821 is an ideal instrument for providing isolation between input, multiple outputs and power supply. The module is an ideal choice when fanning out of process signal is required. It provides up to four output signals, each capable of driving of 800 ohms. All these outputs are isolated from each other, input and power supply. This ensures isolation between various subsystems and protects the system from all grounding problems.

The module accepts variety of inputs. It accepts a current input of 4 – 20mA DC from two wire transmitters. The unique design of the module requires only one single positive barrier at the input from a two-wire transmitter for intrinsic safety and isolates the control room. The module also accepts T/C and RTD signals. The cold junction compensation is built in and up scale burn out is provided as standard features for thermocouple input ranges.

Model 821 is also equipped with an optional 3-½ digit seven segments LED display for process indication in percentage or engineering units. It is also facilitated with internal transmitter power supply of 24 V DC, to power up two-wire transmitters.

Low drift precession components are used for long term accuracy of the instruments. All instruments undergo a burn-in for better reliability.

> Specifications ::

Input

1) Current, 4 - 20 mA DC/ 0 - 20 mA DC
2) Voltage, 1 - 5 V DC/ 0 - 10 V DC
3) RTD Pt 100
4) T/C Type J, K, R, S, T.

Input impedance


200 K for Voltage, mV & T/C inputs
250 for current inputs

Cold junction compensation

Built in for T/C input.

Isolation

Between input, each of outputs and power supply

Analog output

1) Isolated 4 - 20 mA DC / 0 - 20 mA DC
2) Isolated 1 - 5 V DC / 0 - 5 V DC

Analog output load capability

800 maximum for current o/p.

Output accuracy

+/- 0.25% of span

Display accuracy


+/- 0.1% of span

Transmitter power

24 V DC for current inputs

Power supply

1) 24 V DC
2) 110 V AC, 50 Hz, +/- 10%
3) 230 V AC, 50 Hz, +/- 10%

Power consumption

6 VA max.

Ambient temperature

0 - 50° C.

Storage temperature

0 - 70° C.

Humidity

90% RH (non-condensing)

Please have a look at the following table to understand the availability of different sizes.

Mounting
Dimension
Inputs
Power
Isolated Outputs
Indication Options
Display
Size
Type of o/p
Np. of o/p
Display Resolution
Bar graph
Panel
96 * 48 * 110
All
24V DC
All
Max. 1
3½ digit
21 LED's
¼" size
Din
75 * 22 * 110
All
24V DC
All
Max. 1
-
-
-
75 * 45 * 110
All
24V DC
All
Max. 2
3½ digit
-
¼" size
75 * 70 * 110
All
24V DC
All
Max. 4
-
-
-
70 * 60 * 110
All
All
All
Max. 2
-
-
-
70 * 100 * 110
All
All
All
Max. 4
-
-
-
Wall
195 * 70 * 115
All
All
All
Max. 4
-
-
-
EURO
130 * 20 * 120
All
24V DC
All
Max. 2
-
-
-