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Pantech Instruments
Pantech Instruments

Control Station

We are offering our clients precision engineered Control Station. It is known for long lasting, defect free and low maintenance features. It is developed in conformity with the industry standard as well as in accordance with client specific requirements.

Auto Manual Station


Auto Manual Station
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We hold expertise in designing and developing Auto Manual Station (Model A881). These microprocessor based auto manual station are designed to control and display control parameters. The instrument work as an A/M Controller along with an indicator with retransmission output. Being an A/M controller, these instrument accept 4-20 mA input from sources like DCS and give output in normal auto mode. The control shifts from the AUTO mode to the MANUAL mode, during breakdown. User can now control the output 4-20 mA from the control keys provided on the front panel. This transfer is bump-less.

The controller continuous its control in auto mode, even in case of failure of A/M station. Furthermore, optional auto bias feature of these products allow even manual to auto transfer bump-less. To allow this bump-less transfer, the bias is set automatically in manual mode and then it can be converted by pushing buttons in auto mode. Along with this, external feedback signal o/p from the A/M station facilitate controller to track A/M output in manual mode. 1% and 10% per sec are the rates of change of output (in manual mode) and bias (in auto mode). The instrument is provided with 4 digit display which displays the output parameters as configured by the user.

Technical Specifications:
Push Buttons
Up, Down, F
5 (Up, Down, A, M, I/O, F)
Up and Down keys used to vary the output in the Manual Mode. When these keys are
Used along with F ( Fast ) key the output can be varied very Fast
Used to get back the instrument in Auto mode
Used to get back the instrument in Manual mode
Used to sense the Input condition : healthy or erroneous
Indications 4 digit green/red LED for Controller O/P (channel – 1 o/p for DCS)
4 digit green/red LED for Position feedback  - optional
2 LEDs indication on the front fascia for : AUTO or MANUAL Indication
1 LED indication on the front fascia for Input = Output (on channel – 1)

O/P Load
2 nos of 4-20 mA (Analog outputs)
Output 1 on channel 1 (Based on Auto/Manual state, Controller O/P) [Reverse mode also possible]

Output 2 on channel 2 (Based on the Process Value display) - optional

Upto 800 ohms **additional / special o/p possible on  confirmations
Relay O/P 2 Relay outputs (Digital outputs) provided
First relay output on Instrument Fail
Second relay output on Auto/Manual selection ** special relay outputs on confirmations
Tracking Tracking time field adjustable from the front fascia only
Controller O/P can be varied from this
Accuracy Display accuracy of 0.15% of full span
Output accuracy of 0.15% of full span
Power 230 V AC +/- 10% @ 50 Hz. OR 110 V AC +/- 10% @ 50 Hz OR 24 V DC // or SPECIALS

Metal sheet powder coated / ABS Plastic

96*96 / 72*144 / 48*96 / specials (w*h) mm

Panel / Wall / Field / specials
Screw type on the back side of the instrument
Amb. Temp 0-50 deg. C
90% RH
single level password protected

Additional Information:

  • Item Code: 7660
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Valve Positioner


Valve Positioner
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Our esteemed clients can avail from us Valve Positioner (Series 883). These micro-controller based products are designed to control output going to servo valve, with or without the process controller.

These products are panel mounted control valve driving station, that accept 4 – 20mA signals from controller and a give response signal from control valve. The offered products itself derive voltages for feedback signal. These products generate up or down pulses to operate motorized control valve based on the difference between controller output and feedback from control valve. Furthermore, provided drives the instrument in manual mode, in case of input or feedback failure and lock the valve in its last position. Variable dead band of 0.5% to 5.0% prevents the valve from hunting. Delaying the another movement of valve by preset time once it is settled.

Valve can be driven up or down manually by overriding facility. The instrument shows valve opening in percentage through 4-digit red LED display.

The configurable features in this new version of the valve position's are as follows:

  • Feedback resistance range remains configurable
  • You can select any pot. value between 100 ohms to 5 kilo ohms
  • However, the span range (higher limit input value – lower limit input value) should at-least be 10% of the Pot. Value
  • For example, if 1Kohm pot is selected, then there should be at-least 100 ohms value difference between the higher limit and lower limit selected
  • All configurations by front four keys
  • Display range configurable accordingly by front keys only
  • When input breaks, the instrument comes in the manual mode. when no port is connected, the instrument will show open. when input of 4-20 ma breaks, the instrument goes in manual mode
  • The modules incorporate low drift operational amplifiers and industrial grade components. Burn in of each module ensures a long trouble free operation

Input 4 – 20 mA DC
Feedback resistance from control valve.
Feedback 100 Ω (minimum) to 5K Ω (maximum).
Output UP and DOWN contacts.
4-20 mA DC isolated, if required.
Display Range Configurable. Factory set : 0-100%
Display Resolution 4-digit LED
Deadband Satiability 0.5% to 5% Maximum
Front Controls A/M switch, Up, Down.
LED Indications Auto, Manual, UP, DOWN
Display Accuracy +/- 0.15% of span°C.
Power Supply 230 V AC
110 V AC
24 V DC (22.5 to 28.0 V DC)
Power Consumption 6 VA max.
Ambient Temperature 0 – 50 °C.
Storage Temperature 0 – 70 °C.
Humidity 90% RH (non-condensing)

Additional Information:

  • Item Code: 883
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Alarm Annunciator


Alarm Annunciator
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We put forward a significant Alarm Annunciator (Series 885) for our valued clients. These products products suitable of indicating field fault conditions in the control room. The offered products sense NO/NC potential free contacts for all the channels in a simultaneous mode. Response time in microseconds while sensing all the channels in round robin fashion is assured by high end microprocessor chips. These products are provided with audio and visual output for alerting plant personnel when fault condition occurs. Front of the instrument controlling keys are provided with acknowledge, reset and test. Same keys can be provided on the back plate. Pattern of rows and columns change with change in total channels, for remote controlling of the unit.

Features of Model 885:

  • Response time is very fast
  • Pertaining to high end microprocessor chip sets on board
  • First fault feature availed
  • Features like manual/auto reset, ring back, first up are provided as optional
  • Any no. of channels/windows possible (for more then 36 nos. Check with factory ends)
  • Enclosure/mountings/dimensions etc can be customized as per the user requirements
  • Weatherproof, flame proof, ip65 grade-all type of enclosures available

Prerequisite from the user:

  • Exact no. of windows and if possible window size
  • No. of rows and columns required by user
  • Dimensions of the instrument required
  • Input type – NO or NC
  • The modules incorporate low drift operational amplifiers and industrial grade components. Burn in of each module ensures a long trouble free operation

Input NO/NC potential free contacts.
Output 1)Audio output (Buzzer, Hooter etc.)
2)Visual output (Front windows)
Output Alarm 1no potential free contact (For Buzzer)
Contact Ratings 5 Amp, 230 V AC
Display Window Size Standard 70*45/30*30/others on front fascia.
Display LED display
Front Controls Acknowledge, Reset and Test switches.
Input Type Selection Internal through jumper selection.
Power Supply 230 V AC 110 V AC 24 V DC (22.5 to 28.0 V DC) Specials
Power Consumption Depends on no. of windows 6 VA max. for 4 nos. of windows
Ambient Temperature 0 – 50 °C.
Storage Temperature 0 – 70 °C.
Humidity 90% RH (non-condensing)
Enclosures Weatherproof, Flameproof and all other standard types
Mounting Panel / Wall / Field / Specials
Dimensions Depends on User requirements
*Special features on factory confirmations only.

Additional Information:

  • Item Code: 885
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Pantech Instruments
Ashish Pandya (Partner)
No. 102, Shailja Complex 2, Near R. C. Patel Estate Akota - Padra Road,
Vadodara - 390020, Gujarat, India
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