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7617
( Dual output, Din rail ) |
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7626
( 4 Output, Din rail ) |
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7623
( Single output, Din rail ) |
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7636
( Single output, Din rail ) |
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C-0572
( Din output, Din rail ) |
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C-0566
( Dual output, Display ) |
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C-0567
( Dual O/P, Display & Bargraph ) |
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C-0594
( Euro Card format ) |
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- 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
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| MODEL 821-SIGNAL ISOLATOR
( Predefined Input types ) |
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| Introduction |
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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. |
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| Specifications |
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Input ( Predefined type )
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Current, 4 – 20 mA DC/ 0 – 20 mA DC
0-1 Amp. / 0-5 Amp. / others
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Voltage, 1 – 5 V DC/ 0 – 10 V DC / others
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RTD Pt 100 / Resistances
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T/C Type J, K, R, S, T
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0-1 / 0-5 Ampere
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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
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Isolated / Non Isolated 4 – 20 mA DC
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Isolated / Non Isolated 0-10 V DC
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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
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Power supply
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24 V DC
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110 V AC, 50 Hz, +/- 10%
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230 V AC, 50 Hz, +/- 10%
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90-270 V AC – SMPS
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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
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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.
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On confirmation with factory, changes of all types in all specifications is possible.
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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 |
- |
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75*45*110 |
All |
24 V DC |
All |
Max. 2 |
3 ½ digit |
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¼“ size |
75*70*110 |
All |
24 V DC |
All |
Max. 4 |
- |
- |
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70*60*110 |
All |
All |
All |
Max. 2 |
- |
- |
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70*100*110 |
All |
All |
All |
Max. 4 |
- |
- |
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Wall |
195*70*115 |
All |
All |
All |
Max. 4 |
3 ½ digit |
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¼” |
Euro |
130*20*120 |
All |
24 V DC |
All |
Max. 2 |
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Note :
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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.
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The user cannot configure the instrument IN ANY MEANS to change its input types. This can be done at factory only.
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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.
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Output isolated signal can be fine tuned with the help of front fascia potentiometers.
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| Ordering Information ( 12 digits ) |
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Please confirm the availability of the model by cross checking the table mentioned on the backside. |
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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 |
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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 |
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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 |
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