Temperature, RH and DP Indicators

Description :

The STYRAX “Clean Room Process Monitor” has been specially developed keeping process measurement requirements of CLEAN ROOMS in Pharmaceutical industries. The Process Monitor can measure Temperature, RH Inbuilt integral Sensor, Differential Pressure Inbuilt sensor or three analog inputs or two analog inputs and inbuilt differential pressure sensor. It has on demand dew point display. The Monitor has status LEDs for process violation indication. RH, Temperature and Differential pressure will display individually and data transfers to any master device on MODBUS RTU RS-485 communication. It also has communication diagnosis LED. The monitor has inbuilt buzzer for audible process violation. It has keypad to program and calibrate the instrument by user. It has Stainless steel Modular Face plate, which is designed as a mounting accessory for monitor suited for Brick and Modular wall for Clean Room applications where you need flush mounting mechanism.

Features :

  • Advanced Microcontroller based process measurement.
  • Programmable channel ranges and unit selections.
  • Programmable resolution.
  • 4 Digit, 0.39 bright 7- Segment LED display for displaying Temperature, RH and DP.
  • User selectable set limits for process value violation.
  • Process parameter status indication with 3 Bi-Color 3mm LEDs.
  • Inbuilt buzzer to audible process value violation.
  • Password protection for calibration and programming mode.
  • Software Calibration for 3 channels.
  • MODBUS RTU multi drop RS-485 serial communication for PLC, SCADA, etc.
  • Programmable baud rate between 9.6k/19.2k/38.4k.
  • Diagnosis indication of Communication with master.
  • User programmable offset correction.
  • Brick and modular wall mounting.
  • Stainless steel enclosure.


Input Type

Inbuilt Integral Sensors/4-20mA/0 to 10VDC.

Measuring Ranges

%RH: 0.0 to 100%RH.

Temp: -40°C to 100°C.

DP: -105.4 to 105.4 mmWC, -1034 to 1034 Pascal's and 8 types of units with equivalent values.


%RH: ±2% RH for 10 to 90% and±4% RH for remaining.

Temperature: ±0.3°C for 0°C to 50°C and 2°C for remaining.

DP: ±1.5% for all units.


%RH: 1/0.1% RH.

Temp: 1/0.1°C.

DP: 0.1mmWC.

Power supply:


Model No. Input Type No. of Channels Display Dimensions


Temp., RH and DP Inbuilt Sensor

3 0.39" 150 X 90 X 38


Temp and RH Inbuilt Sensor

2 0.39" 150 X 90 X 38


4-20 mA / 0 - 10 VDC

3 0.39" 150 X 90 X 38


Styrax Instruments India Pvt. Ltd., has been one of the prominent manufacturers and suppliers of Process Measure and Control Systems, Clean room Interlocking Systems, Automation Solutions and hi-tech security and access control systems.

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STYRAX Instruments India Pvt Ltd.
H.No: 2-77, Near Gajularamaram Chowrastha,
Gajularamaram, Hyderabad - 500055.
Telangana, India.
Mobile :
+91 9989222456 (Director Sales)
+91 9640447474 (Head Operations)
+91 9248068489 (Asst. Manager Sales)
+91 9248068487 (Coordinator Sales)