Manufacturers of Process
Control Instruments
We are an eminent Manufacturer and exporters of Process Control Instruments. Our Quality Instrumentation Products have already remained TIME PROVEN.
Signal Isolators & Convertors Predefined Inputs-821
 
horizontal
7617
( Dual output, Din rail )
 
horizontal
7626
( 4 Output, Din rail )
 
horizontal
7623
( Single output, Din rail )
 
horizontal
7636
( Single output, Din rail )
 
products
C-0572
( Din output, Din rail )
 
products
C-0566
( Dual output, Display )
 
products
C-0567
( Dual O/P, Display & Bargraph )
 
products
C-0594
( Euro Card format )
spadcerpdfspadcerrequest
 
  • Rugged & Time Proven Designs
  • 2 wire / 4 wire types
  • Three Port Isolation Opto and Galvanic
  • Predefined Inputs / Ranges
  • Optional Display / Bargraph features
  • Wide Input / Ranges type supported
  • Transmitter P.S. @ 24V DC.
  • Various sizes / Mountings / Enclosures supported
 
MODEL 821-SIGNAL ISOLATOR

( Predefined Input types )

 
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 any one out of variety of inputs. It accepts a current/voltage/temperature input or 4 – 20mA DC from two wire transmitters “or” sensor. 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. As well as it can be equipped with an intrinsically safe current output.


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.The instrument is available in different formats and sizes. Information regarding specification and size is given below.

 
Specifications
 
Input ( Predefined type )
  1. Current, 4 – 20 mA DC/ 0 – 20 mA DC

          0-1 Amp. / 0-5 Amp. / others

  1. Voltage, 1 – 5 V DC/ 0 – 10 V DC / others

  2. RTD Pt 100 / Resistances

  3. T/C Type J, K, R, S, T

  4. 0-1 / 0-5 Ampere

  5. Specials ( on factory confirmations )

 

Input impedance

200 KΩ for Voltage, mV & T/C inputs

250 Ω for current inputs

 

Cold junction compensation

Built in for T/C input.

 

Analog output
  1. Isolated / Non Isolated 4 – 20 mA DC

  2. Isolated / Non Isolated 0-10 V DC

  3. Other types on factory confirmations

 

Isolation type

Opto and Galvanic .. @ 1500 V DC minimum

 

Analog output load capability

800Ω maximum for current outputs

 

Output fine tune

By front fascia potentiometers

 

Output accuracy

+/- 0.1% of span

 

Display resolution

3.5 digit type

 

Display accuracy

+/- 0.15% 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%

  4. 90-270 V AC – SMPS

  5. Specials on factory confirmations

 

Power consumption

6 VA max.

 

Ambient temperature

0 – 50° C.

 

Storage temperature

0 – 70° C.

 

Humidity

90% RH (non-condensing)

 

Enclosures

Weatherproof Panel mounted

Field mounted – WP/IP65/Flameproof

 

Mounting

Panel / Wall / Field / Dinrail / Eurocard


  • Following table describes the availability of several models with the company right now. A general preview is only presented to the user. The dimensional and display sizes are the relational virtues of each other and hence the user is always requested to clarify the specifications of instrument with the factory prior to placement of the order.

  • On confirmation with factory, changes of all types in all specifications is possible.

 

Model

Mounting & Dimension in mm (H * W * D)

Inputs

Power

Isolated outputs

Indication Options

Display size

Type of o/p

No. of o/p

Display resolution

Bargraph

821

Panel

96*48*110

96*96*110

All

All

All

Max. 1

3 ½ digit

21 LED’s

¼“ size or ½” size

DIN

75*22*110

All

24 V DC

All

Max. 1

-

-

-

75*45*110

All

24 V DC

All

Max. 2

3 ½ digit

-

¼“ size

75*70*110

All

24 V 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

3 ½ digit

-

¼”

Euro

130*20*120

All

24 V DC

All

Max. 2

-

-

-

 

Note :

  1. The user should opt for this model only if there remains LEAST possibility of change in INPUT / OUTPUT and other related specifications of the instrument. These instruments are of the type : FIT IT and FORGET IT. The stable electronics assures years of consistent run, once preliminary specification cares are taken for.

  2. The user cannot configure the instrument IN ANY MEANS to change its input types. This can be done at factory only.

  3. Calibration, Display range etc – are the configurations that the user can perform by POTENTIOMETERS on PCB level. The instrument has to be definitely opened up for this purpose and this has to be done by a trained technician.

  4. Output isolated signal can be fine tuned with the help of front fascia potentiometers.

 
Ordering Information ( 12 digits )
 

Please confirm the availability of the model by cross checking the table mentioned on the backside.

Basic Model No. (Specified by first 3 digits)

821 - Signal Isolator

 

Enclosure / Mounting (Specified by letter following 3 digits)

P - Weatherproof - Panel

R - Weatherproof -Din Rail

E - Weatherproof - Euro card

W - Weatherproof - Wall

F - Flame proof – Wall / Field

I - IP65 grades – Wall / Field

S - Specials

 

Input (Specified by first digit following the letter)

1 - mA DC // current inputs

2 - V DC // voltage inputs

3 - RTD Pt. 100

4 - T/C J type

5 - T/C K type

6 - T/C R type

7 - T/C S type

8 - T/C T type

9 - Special/others

NOTE: Please specify the i/p ranges for T/C & RTD.

Power option (Specified by the next digit / letter)

1 - 24 V DC

2 - 110 V AC

3 - 230 V AC

4 - 90-270 V AC – SMPS

S - SPECIALS

 

No. of output option (Specified by the next digit / letter)

1 - 1 no. of output

2 - 2 no. of output

3 - 3 no. of output

4 - 4 no. of output

 

Type of output option (Specified by the next digit / letter)

1 - mA/V DC isolated

2 - mA/V DC non-isolated

3 - Any other type of outptus

 

Bargraph option (Specified by the next digit / letter)

0 - none / N.A.

1 - yes

 

Display option (Specified by the next digit / letter)

0 - None

1 - 3 ½ digit

 

Made in India By:

PANTECH INSTRUMENTS,

102, Shailja Complex II,

Akota – Padra Road,

Nr. R. C. Patel Ind. Estate,

Vadodara – 390 020.

Telefax: (265) 2331380/6616080