Ace Instruments

Ace Instruments

Ace Instruments

Kukatpally, Hyderabad, Telangana

Humidity Transmitters and Sensors

Humidity Transmitters and Sensors are industry standard transmitters with integrated display. Humidity Transmitters come with the option of backlit LCD or 3 Digits x 2 of 7 Segment LED Display. Industry standard 4-20mA for humidity & optional temperature output of 4-20mA with option of RS485 Modbus Communication Great accuracy of /-1.8% R.H. for humidity & /-0.5 Deg. C for temperature is achieved using imported basic sensors from Switzerland. The Humidity Transmitter runs on 24 V.D.C. or optionally on 230 V.A.C., Single Phase. Humidity Transmitters also come for Clean Room Enclosures with Stainless Steel Front Plates & 45 mm. Depth enclosures. 

Humidity and Temperature Indicator


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Approx. Rs 7,800 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Model Name/NumberAI-RHTx
Display TypeDigital
Temp Range0-60C
Humidity Range0-100%RH
Mounting TypeWall Mount
Sensor SupplyRTD Pt-100
Supply Voltage24 VDC

Temperature and Humidity Indicator is used to measure and indicate Temperature and Humidity on 2 line digital display indicators, 1 line each for humidity & temperature measurement.

Applications: Cold Storage, Warehouses, HVAC, Pharma clean rooms, Deep freezer.


  • IP65 Rating
  • High accuracy
  • In built Buzzer with 50db
  • Optional RS485 Modbus communication to enable communication with SCADA, BMS, DCS /DDC or other software applications
  • Wired External sensor





Measuring Parameters

Temperature, humidity

Temperature range


Humidity range

0-100% RH

Power supply

24 VDC


In built buzzer of 50db output

Mounting Type

Wall Mounting

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Humi-Temp Indicator


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Approx. Rs 9,450 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Display TypeDigital
MaterialStainless Steel
Temp Range0 to 60C
Humidity Range0 to 100% RH
Supply Voltage230 VAC

Humi-Temp Indicator Model AI-CRM2A-I is designed to measure the vital parameters of Temperature & Humidity in a single instrument for Clean Room Measurement Applications. 

Applications: Pharma Clean Rooms, APIs, Bulk Drugs, Electronic Hardware Manufacturing Plants, Test Plants, Green Houses.


  • Flush type wall Mounting
  • 4-20mA Output
  • In-built Buzzer with 50db
  • RS 485 Modbus Communication
  • Easy integration to Building Management Systems ( BMS ) & SCADA interfacing allow quick set up & great control.





Measuring Parameters

Temperature, Humidity

Temperature Range

0 to 60C

Humidity Range

0 to 100%RH

Supply Voltage

230 VAC



Additional Information:

Item Code: AI-CRM2A-I

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Flameproof Duct Humidity Transmitter


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Approx. Rs 9,850 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
BrandAce Instruments
Temperature Range-30.0 to 60.0 Deg. C
Display TypeNo Display
Mounting TypeDuct Mount
Humidity0.0 to 100.0% R.H.

Flameproof Duct Humidity Temperature Transmitters are especially designed for HVAC applications for simultaneous dual analog 4-20 mA outputs corresponding to temperature & humidity.


  • The Flameproof Duct Humidity Temperature Transmitter is ideal for connecting outputs onto BMS/PLC/SCADA since it provides industry standard 4-20 mA Analog Outputs & also comes with optional RS 485 Modbus communication.
  • Flameproof Duct Humidity Temperature Transmitter is designed for use in hazardous areas & is housed in aluminum LM-6 Body certified by CIMFR, Dhanbad for use in Gas Group Areas I, II, IIA & IIB.
  • The Flameproof Duct Humidity Temperature Transmitter has a measuring range of -30.0 to 60.0 Deg. C for temperature & 0.0 to 100.0% R.H. Non Condensing.
  • It comes with a duct mounting clamp & is best suited for use in hazardous pharmaceutical applications, flameproof clean room applications, Intrinsically Safe applications & ATEX applications.
  • Also available as only flameproof humidity transmitter with only 1 analog output of 4-20 mA corresponding to 0.0 to 100.0% R.H. Non Condensing.

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Wireless Temperature and Humidity Indicators

  • Wireless Temperature and Humidity Indicators
  • Wireless Temperature and Humidity Indicators
  • Wireless Temperature and Humidity Indicators

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Approx. Rs 18,500.00 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Model Name/NumberAI-RHTX
Temperature Range0-60C
Display TypeDigital
Usage/ApplicationBattery Rooms, Server Rooms
MaterialABS Plastic with Wall Bracket
ProtectionIP 65
I Deal InNew Only

Wireless Temperature and Humidity Indicator with in-built SMS Alert facility is a state-of-the-art instrument to monitor the parameters of temperature & humidity in critical applications like cold storage, cold chains, food, Pharmaceuticals, bio-medical, logistics, Warehouses, Airports, Hospitals, Machinery Rooms, Ship-Building, etc. The Model TH-GSM Wireless Temperature & Humidity Indicator has an integrated Large Clear Back-lit Dot Matrix Display with live display of temperature & humidity. The TH-GSM has a built-in/optional external high accuracy combination temperature & humidity sensor suitable for temperature range of -20 Deg. C to +100.0 Deg. C & humidity range of 0.0 to 100.0%. R.H. Non Condensing.

It has an in-built SMS Alert facility which works as per the following Standard Operating Procedure:

  • Time- Bound SMS: SMS Alert of Temperature & Humidity Values on your Mobile over SMS at user programmable intervals.
  • Alarm Status SMS: SMS Alert upon exceeding Critical Levels of any of the 2 parameters of temperature & humidity. The alarm limits are freely programmable by user from front keypad.
  • Request SMS: User can request the TH-GSM Wireless Temperature & Humidity Indicator for real time values of both temperature & humidity with time stamp over SMS. The user send a request SMS to the device & the device replies back by SMS of real time values of temperature & humidity.

Other details:

  • Optional data logging memory of up to 1,00,000 records for both parameters can be provided & customized software for real time monitoring & Excel Sheet Generation of records is available for validations & data logging.
  • Also, email facility is also provided over GPRS wherein an email is sent at the end of the day with the data records in Excel Sheet Format by the Wireless Temperature & Humidity Indicators.

Additional Information:

Item Code: TH-GSM

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Cold Storage Temperature Indicators


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Approx. Rs 4,800 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Model Name/NumberAce
Display TypeDigital
Usage/ApplicationCold Storage, Ware Houses, HVAC, IT infrastructures
Temp Range0 to 50C
Humidity Range0 to 100% RH
Mounting TypeFlush Type Wall Mounting

Cold Storage Temperature Indicator is used to indicate Temperature in Cold chain with an alarm for process violation alert.

Applications: Cold Chains, Warehouses, HVAC, IT Infrastructures.


  • In-built Buzzer
  • Pre- wired 3 meters of Sensor cable length
  • Bracket Type Wall Mounting
  • Audio buzzer of 50 DB

Measuring Parameter


Temperature range

0 to 60C

Cable length

Pre-wired 3 meters Cable

Power supply

24VDC/ 230V AC


In- built buzzer with 50 db

Enclosure Type

ABS Plastic with


80(W) x 80(H) x 55(D) mm

Additional Information:

Item Code: AI-RHTD

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Siemens QFA3171 Humidity and Temperature Sensor


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Approx. Rs 13,500 / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Usage/ApplicationStorage and production facilities in the paper,textile,pharmaceutical,food,chemical and electro
MaterialIP 65
AccuracyRH +/-2% , TEMP +/0.5 Deg.C
Model Number/NameQFA 3171D
Maximum Operating Supply VoltageAC 24 V / DC 13.5-35 V
Output TypeOutput 0-10 V DC / 4-20 mA for Relative Humidity and Temperature
Temperature Range0...50 degC (R2 = factory setting),-35...35 degC (R1),40...+70 degC (R3)

The Siemens QFA3171 temperature and humidity sensor sold by Ace Instruments is for use in ventilation and air conditioning plants where high accuracy and short response times for measuring relative humidity are required. The measuring range covers the entire humidity range of 0...100 %.

This product is regularly exported to USA, Poland, UAE, Oman, Qatar, Saudi Arabia, Nigeria, Kenya, Egypt, Australia, UK, France, Italy, Bangladesh, Thailand, Malaysia, Singapore, Romania, Belgium, Russia, Brazil, Germany, etc.

Applications of the QFA3171 include:

  • Storage and production facilities in the paper, textile, pharmaceutical, food, chemical and electronics industry, etc.

  • Laboratories

  • Hospitals

  • Indoor swimming-pools

  • Computer and EDP centers

  • Greenhouses

  • With the AQF3100 accessory for outdoor use

Technical Specifications:

Operating voltage

DC 13.5...35 V

Measuring range, temperature

0...50 °C, -35...35 °C, -40...70 °C

Measurement range humidity

0...100 % r.h.

Measurement accuracy

Humidity at 0...100 % r.h. and 23 °C: ±2 % r.h., Temperature, at 15...35 °C: ±0.6 K, Temperature, at 40...70 °C: ±0.8 K

Time constant

Humidity: <20 s, Temperature: <8.5 min

Connection, electrical

Screw terminals

Signal output temperature

DC 4...20 mA

Signal output humidity

DC 4...20 mA

Degree of protection

IP65 / IP40

Dimensions (W x H x D)

80 x 144 x 39 mm

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Rotronic Hygro Palm Thermo Hygrometer


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Approx. Rs 500 / NoGet Latest Price

Product Details:



ROTRONIC , Switzerland make is a highly accurate handheld indicator that displays relative humidity, temperature and dew or frost point temperature. The HP21 is perfect for spot checking HVAC installations, manufacturing or storage areas and any ambient air measurement within the temperature range of -10 to 60°C (14 to 140 °F). The HP21 is designed to meet a wide range of user requirements Lo In spite of its high end design, the HP21 is ideal even as a simple humidity and temperature indicator.


  • Range of measurement: -10 to 60°C / 0 to 100 %RH

  • Service interface (UART)

  • Calculation of dew and frost point


Rotronic, Switzerland




274 x 72 x 35 mm

Operating range electronics

-10...60 °C / 0…100 %RH

Accuracy at 23 ±5 °C

±1.0 %rh / ±0.2 K

Accuracy w. adjustment profile "standard"

at 23 °C / 10, 35, 80 %rh ± 1.0 %rh / ± 0.2 K

Measuring range with integrated probe

-10…60 °C / 0…100 %RH

Power supply / Power consumption

9 V battery / ~5 mA (without lighting)

Long Term Stability

<1% RH/Year

Humidity sensor

Hygromer M1-R

Temperature sensor

PT100 1/3 DIN Class B

Probe protection

Polycarbonate plastic cage, black

Response time t 63

< 3 Sec

Allowed wind speed

40 m/s, with filter

Psychrometric calculations

Dew or frost point

Calibration / adjustment

with keypad

Reproducibility Airchip

<0.02%rh /0.01K

Initialisation time


Measurement interval

2 seconds

Display type

Graphic display. Display freely configurable



Alarm indicators


Battery indicator


Exploitation software

ROTRONIC HW4.2 (Not part of supply)

Trend indicator


Probe adjustment by software

Yes, with service cable (Not part of supply)

Firmware update

With internet and HW4 software

User information

from Software HW4 (devicemanager)

Data processing via HW4

Graphs, statistics, analysis, qualification, etc.

Device Protection by password


Service Interface


Max. cable length service cable

5 m (Not part of supply )

Enclosure material


IP protection rating


Fire protection class

UL94-HB Compliant

FDA/GAMP compatibility

FDA 21 CFR Part 11 and GAMP compatible


12 months manufacturer warranty

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Cold Storage Temperature-Humidity Monitor


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Approx. Rs 7,800 / UnitGet Latest Price

Product Details:

Minimum Order Quantity1 Unit
ApplicationStorage Storage Rooms

Cold Storage Temperature and Humidity Monitor

Cold Storage Indicator/Monitor is an economical Cold Storage Facilities Temperature Monitor which simultaneously measures displays alerts user about the critical parameters of temperature humidity in Cold Storage facilities.

The Cold Storage Monitor  has a wall mounting display unit with 2 line 4 + 4 digit 7 Segment LED Display  each 4 digit line displaying the temperature humidity of the Cold Storage room. The sensor is wired with standard wire length of 3 mtrs which enables the display monitor to be placed outside the Cold Storage Room  the sensor can be placed inside the room being monitored. The Cold Storage Monitor has an integrated programmable buzzer alarm for alerting in case of any deviation from customer specified temperature humidity limits.

Brand: ACE Instruments
Application: Storage Rooms

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