Libratherm Instruments Pvt. Ltd.
Libratherm Instruments Pvt. Ltd.
Dahisar East, Mumbai, Maharashtra
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Humidity and Temperature Indicator, Controller

We develop our products with all latest technologies. Our products includes - humidity indicator and temperature indicator, humidity controller, temperature controller, transmitter and temperature and humidity logger.

Clean Room Monitor for Humidity &Temperature

Clean Room Monitor for Humidity &Temperature
  • Clean Room Monitor for Humidity &Temperature
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Libratherm offers micro-controller based (T + Rh + DP) Indicator cum Transmitters with 1” high digital display for long distance visibility and 4-20mA retransmission outputs for T, Rh and DP each. RS 485 or Ethernet interface is also made available for digital interface to PLC. These instruments are specially designed for cleanroom monitoring.

Respective sensors for T, RH and DP are built-in to the same enclosure or alternately provision for the external sensor is available.

The indicator is housed in an ABS – IP65 enclosure and top fascia is covered with stainless steel (SS304) metal plate. The indicator can be mounted in flush with the wall, all the sensing and cabling is done from the rear side of the enclosure. Externally connected sensors can be installed at suitable locations as per the requirement.


Features:

  • Microcontroller based design.
  • Elegant appearance, easy to operate and compact in size.
  • Highly accurate and sturdy in operation.
  • Triple 1” display for simultaneous indication of T, Rh and DP.
  • Both analogue and digital interface for data transmission.

Specifications:
  • Ip Rating: IP 65
  • Enclosure: S.S fascia
  • Output: 4-20 mA
  • Output: Display
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Clean Room Monitor & Real Time Data logger

Clean Room Monitor & Real Time Data logger
  • Clean Room Monitor & Real Time Data logger
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Product Details:

ColourWhite
ApplicationReal time data display

Features:
  • Microcontroller based design.
  • Elegant appearance, easy to operate and compact in size.
  • Highly accurate and sturdy in operation.
  • Three colour 1” display for simultaneous indication of T, Rh and DP.
  • Ready for both analog and digital data transmission.
  • Built in memory and RTC for real time data storage.
  • Stainless Steel (SS) enclosure.

Technical Specifications:

Sensors

External / Internal Capacitive / Pt-100 based T + Rh sensor and built in

DP sensor.

Temperature Range

-40.0 to 60.0oC /-40.0 to 140.0oF

Temperature Accuracy

+/- 0.3 ⁰C/oF

%RH Range

0.0 to 100.0 %RH

RH Accuracy

+/-1.0 %RH @ 25.0 ⁰C

Diff. Pressure Range

+/-100 mmWC or +/-999 Pascal

(UOM can be selected)

DP connection using 6 mm self- lockable PU tube connector at the back.

DP Accuracy

+/- 1% of the calibrated range.

Display

4 digits LED display each for T, %RH and DP – 1” red /green/blue

Power Requirement

24VDC @ 300mA (+/-10%) or 230VAC (Any one – user to specify)

Output 1 for Temperature

4-20mA proportional to -40.0 to 60.0 ⁰C

Output 2 for % RH

4-20mA proportional to 0.0 to 100.0 %RH

Output 3 for DP

4-20mA proportional to +/-100mmWC or +/-999 Pascal.

High and Low Alarms

High and Low alarm set points for each parameter are user

programmable. In case of deviation from the set value, the front panel

LED lights and Beeper sounds (with snooze facility).

Serial Output (optional)

Isolated 2 wire RS485 MODBUS RTU - with programmable SLAVE ID

Ethernet Port (optional)

Ethernet port on RJ-45 jack with TCP/IP protocol.

Built in Memory and RTC

Real time Data storage capacity of 20,000 records in 256KB of flash

memory with built in RTC.

Key board

Membrane key board is provided for programming real time, alarm

values, MODBUS address and for calibration.

Enclosure (Size)

 

(250w x 200h x 50d) mm. - Depth of max. 30mm. from Wall surface.

Mounting

Concealed flush mounting on the PUF panel or in the wall.

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Kamlesh Panchal (CEO)
No. 401-403, Diamond Industrial Estate, Ketki Pada Road Dahisar East
Mumbai- 400068, Maharashtra, India


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