Sigma Controls
Ring Road, Ahmedabad, Gujarat

Electronic Liquid Level Controllers And Indicators

We are a leading Manufacturer of hot runner temperature controller, humidity controllers, humidity controller, moisture controller, flame proof temperature controller and scr power circuit from Ahmedabad, India.

Hot Runner Temperature Controller

Hot Runner Temperature Controller
  • Hot Runner Temperature Controller
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Approx. Price: Rs 2,500 / Piece(s)

We are an accredited organization engaged in manufacturing, supplying, trading and exporting Hot Runner Temperature Controller. Represents the sophisticated in hot runner temperature control technology, which are designed to operate independently. These controllers are microprocessor-based that are auto tuning in temperature controlling and self-regulating power controllers. Provided with an alarm for heater failure, under and over temperature, this is fully controllable by the switches. Consumes less electricity, longer service life and continues performance are some of the features of the Hot Runner Temperature Controller.




  • Gradual phase angle firing soft start

  • Power control system

  • Built in diagnostics

  • Self-regulating power controllers

  • Accuracy of +/- IOC

  • PID accepts J, K Thermocouples

  • Phase angle power controllers are used which saves heater life and power, as these are variable automatic power controllers

  • Build in soft start in power controllers

  • Fast fuses for over current protection

  • Power controllers can handle more than 5000 watts in single 2one at 220 Vac.

  • Alarm for heater failure

  • Alarm for under and over temperature

  • In case of thermocouple failure, one can set percentage of power to the heaters

Main Frame, Panel

  • We offer a wide selection of zone capacities to suit almost any control application

  • We provide individual frame sections up to 12 Zones. Then up to 48 Zones, these are stacked together

  • These are pre-wired integral units.

  • Offering Hot Runner Temperature controller in Ahmedabad

  • Controller card Made in India.

  • Available from Single zone to 24 zone controller

  • Our controller card compatible with most of the models


  • Power requirements: AC85~265V, 50/60Hz

  • Sensor type: J or K thermocouple

  • Setting range: 0 ~450 (32 ~842 )

  • Control Accuracy: ±0.25% of full scale

  • Control Mode: Auto PID or Manual

  • Control Output Device: Triac.

  • Load Capability: 15A / 240Vac; Optional 20A

  • Operating Temperature: 0 ~55 (32 ~131 )

  • Operating Humidity: 10~80%, non-condensing

  • Storage Temperature: -20 ~70 (-4 ~158 )
  • Soft start, auto / manual function, IC open and IC revers indication, heater open heater short indication and fuse fail indication


Additional Information:

  • Item Code: h-r-001
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Humidity Controllers

Humidity Controllers
  • Humidity Controllers
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Approx. Price: Rs 2,500 / Piece(s)
We offer high quality Humidity Controllers that are specially designed in order to control process of humidity without extensive operator involvement. There Digital Temperature Controller are many commercial and industrial applications where artificially controlling humidity levels can provide a significant improvement to the overall operation. Further, the offered products are also known for features like durable finish standards, reliable performance and user friendly interface. By specifically setting and maintaining humidity, temperature, and air exchange standards for the operation, overall profitability is enhanced.

Additional Information:

  • Item Code: H-C-001
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Humidity Controller

Humidity Controller
  • Humidity Controller
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Approx. Price: Rs 2,500 / Piece(s)

We are an eminent organization engaged in manufacturing, supplying, trading and exporting Humidity Controller. Controls temperature range between 0 to 65°C, it is driven by a 10 turn helical potentiometer. The humidity control range lies between 0 and 100 % and also has a high accuracy rate of 1% for RH and 0.10C for temperature. The display of these controllers is directly fed from micro processor to self internal look up tables. The Humidity Controller offered by us is provided with two relays for controlling temperature and humidity.




  • Size: 96(w)x96(h)x65(d) mm

  • µicrocontroller based,

  • Four digit dual display

  • Supply 100-260 VAC

  • Input : PT100 RTD, rH sensor

  • Output: 1. Dry Heater Relay Contact or SSR, 2. Wet Heater Relay contact or SSR,

  • Cooling Relay contact or SSR

  • Control action: Temperature & Humidity-PID (Auto tune) and Cooling control -On/Off

  • Heating and Cooling control

  • Range: Temperature 0 to 60.0 & Humidity 10 to 90% rH

  • Heating & cooling Temperature & Humidity As per range adjustable in set mode.

  • Alarm setting -25.0 to 25.0 adjustable above and below set value.

  • Ct 1 to 60 for ssr output adjustable

  • Auto tuning require for pb, It & dt value of Humidity & Temperature

  • Cooling Hysteresis 0.2 to 25.0 adjustable

  • Delay 0 to 250 second adjustable for cooling control

  • Open display if Sensor break

  • Relay trip if sensor breaks or connection open

  • Calibration Error correction by front key switch (No preset setting)

  • Configure link at Back terminal to avoid unauthentic entry.

  • Defrost On & Off setting for auto defrost

  • Manual defrost on by increment key

  • RS485 Output Optional


Additional Information:

  • Item Code: H-C-002
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Moisture Controller

Moisture Controller
  • Moisture Controller
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Approx. Price: Rs 3,000 / Piece(s)

Our valued customers can avail from us a flawless Moisture Controller. These controllers are manufactured under the supervision of our experts by making use of optimum-grade raw material like aluminum, stainless steel and basic components in accordance with the guidelines laid by industry. Demanded by several industries, owing to their features like water proof, sturdy construction, excellent performance and substantialness, our offered Moisture Controller is available in different specifications to meet the variegated demands of customers.



  • Purpose : It prevents three phase sewage motor against to enter water(moisture) in its oil chamber

  • Weight : 775 grams

  • Dimension : 140x95x81 mm with PVC box

  • Supply Voltage : 415v./230 v., A.C., 50Hz

  • Relay : 6 Amps. One change over relay

  • Packing Box : Corrugated


  • 3 in 1 - Dehumidifier, Air - Purifier and Dryer

  • Moisture Removal : 13 Liters / Day

  • Water Tank Capacity : 6.5 Liters

  • Power Controls : LCD Display / Touch Control

  • 12 Hours Timer

  • Extremely Silent

  • Air - Purifying Filter

  • Power Rotary Compressor

  • Automatic Humidity Control

  • Auto Frost Control

  • Full Water Tank Warning Signal

  • Continuous Drainage

  • Easier Mobility with Convenient Wheels

  • Recyclable Materials for Environmental Conservation

  • R - 134A Refrigerant

  • Running Temperature : 50C - 350C

  • Voltage / Frequency (Volts/Hz) : 220 - 240V, 50Hz

  • Power Input (Watt) : 320W

  • Dimension : 21.7 x 13 x 9.3 inch (HxWxD) : 550 x 330 x 235 mm

  • Weight : 18 Kg

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Flame Proof Temperature Controller

Flame Proof Temperature  Controller
  • Flame Proof Temperature  Controller
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Approx. Price: Rs 6,500 / Piece

Product Details:

Minimum Order Quantity1 Piece
BrandSigma Controls
Temperature Range-50 to 1200c

With the expertise of our professionals in this domain, we are able to bring forth Flame Proof Temperature Indicator Controller. Accept input RTD, thermocouple, voltage, current, these controllers are flow, tachometer, voltmeter, ammeter, temperature, pressure, humidity and level. The input is passed through suitable filters to eliminate unwanted signals, these controllers are known for good stability and sets the calibration point accurately. Available in many models, this Flame Proof Temperature Indicator Controller is housed in a compact sheet metal/Plastic case.

Other details:

  • Based Power, full & highly reliable controller
  • Universal Input (Rtd , t/c, 4-20 mA ,0-10 v dc
  • Transmitter loop power supply with current limit as standard
  • RS-485/232 communication is available for option
  • Retransmission 4-20 Ma and transmitter power supply
  • Flame proof low cost and compact size controller
  • I, IIA,IIB, IP 65 as per IS 2148/1981,certified by C.M.R.I
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SCR Power Circuit

SCR Power Circuit
  • SCR Power Circuit
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Approx. Price: Rs 2,500 / Piece(s)

With the aid of modern tools and sophisticated technologies, we have been ale to manufacture, supply, trade and export SCR Power Controller Circuit. This is a self-supporting power control house, which is mounted on a three or four runner oilfield skid. These circuits are provided with lifting eyes or a draw bar at each end of the house for transportation on a trailer. The SCR Power Controller Circuit offered by us is widely acclaimed in the market for their features like economical operation, low maintenance, compactness and portability.

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Three Phase SCR Power Controller

Three Phase SCR Power Controller
  • Three Phase SCR Power Controller
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Approx. Price: Rs 2,500 / Piece(s)

Driven with perfection, we are engaged in facilitating our customers with Three Phase SCR Power Controller. These controllers are provided with single/three phase/two phase loads and A.C. SCR power controllers for resistive inductive loads. Our offered controllers are highly applicable for A.C Power control of inductive, resistive loads of any capacity and resistance metal gathering and heating machines. The Three Phase SCR Power Controller offered by us is tested on various parameters to ensure high functionality.

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Data Logger

Data Logger
  • Data Logger
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Approx. Price: Rs 10,000 / Piece(s)

Loggers is uniquely suitable for compactly configuring a data acquisition environment using a PC as a human interface. Model 8040 is available in two versions, a half 19" rack module that can acquire data from upto 48 channels, and an expandable full 19" rack module with a maximum of 112 channels. Both versions internally log and also transfer measured variable in real time to PC. They are remotely controlled by the host computer through a set of commands and transmitted in a RS-485/RS232 network. The modular design also provides more flexibility in the system configuration.


The Datalogger system architecture includes a power supply card, CPU card with a built-in RS-232/RS-485 communication port, input and output cards. Datalogger enables user to log the real time data with time stamping. One can select input channel number for log and print purpose with specified time interval from operator terminal keys or using Masibus mACplus software. Print on demand facility is also available. mACplus software works on windows platform and is used for datalogger configuration, calibration and retrieving logged data to PC.


Alternatively, operator terminal is used for local display, configuration and programming of datalogger. Operator terminal is equipped with 24 keys and uses 2x16 alphanumeric LCD screen as user display interface. Model 8040 is much smaller and lighter than our previous model occupying significantly less space. It can provide high speed measurement having a scanning speed of 1 second for 112 channels. Provision for 8 channel DO module provides alarm signal to annunciate abnormal process condition. 4 alarm levels per channel can also be configured.


  • 16 - 112 channel datalogger

  • Scans 112 channel in 1 second

  • Three concurrent serial com. ports

  • One Centronics printer port

  • 2 x 16 character LCD Operator display terminal

  • Universal input for each channel-mix

  • Channel to channel input isolation option

  • 512K battery backed memory

  • Host computer/operator terminal programmable

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Muffle Furnace

Muffle Furnace
  • Muffle Furnace
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Approx. Price: Rs 75,000 / Piece(s)
A muffle furnace (sometimes, retort furnace) in historical usage is a furnace in which the subject material is isolated from the fuel and all of the products of combustion including gases and flying ash. After the development of high-temperature electric heating elements and widespread electrification in developed countries, new muffle furnaces quickly moved to electric designs.

Today, a muffle furnace is (usually) a front-loading box-type oven or kiln for high-temperature applications such as fusing glass, creating enamel coatings, ceramics and soldering and brazing articles. They are also used in many research facilities, for example by chemists in order to determine what proportion of a sample is non-combustible and non-volatile (i.e., ash). Some digital controllers allow RS232 interface and permit the operator to program up to 126[citation needed] segments, such as ramping, soaking, sintering, and more. Also, advances in materials for heating elements, such as molybdenum disilicide offered in certain models by Vecstar, can now produce working temperatures up to 1800 degrees Celsius, which facilitate more sophisticated metallurgical applications.[citation needed]

The term muffle furnace may also be used to describe another oven constructed on many of the same principles as the box type kiln mentioned above, but takes the form of a long, wide, and thin hollow tube used in roll to roll manufacturing processes.[citation needed]

Both of the above mentioned furnaces are usually heated to desired temperatures by conduction, convection, or blackbody radiation from electrical resistance heating elements.[citation needed] Therefore there is (usually) no combustion involved in the temperature control of the system, which allows for much greater control of temperature uniformity and assures isolation of the material being heated from the byproducts of fuel combustion.

We are one of the reckoned manufacturers, suppliers and exporters of a wide range of muffle furnaces that is used in various industries. Fabricated as per the set industry standards, these are widely used for heating purposes in chemical and R&D industries. We also offer customize solutions of our Muffle Furnaces at market leading prices.


  • Working temp. 900°C temp

  • Light weight with care wool Insulation

  • Supplied with silver fuse etc.

  • Heating coil made of Kanthal Aluminum

  • Temperature control by digital temp indication controller

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Rajesh Bhavsar (Partner)
15, Jahnvi Industrial Estate, S. P Ring Road Circle Near Safari Hotel, Odhav
Ahmedabad- 382415, Gujarat, India

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