Flameproof Temperature and Humidity Transmitter – Duct Mount – HTX-440-FLP-DM
₹8,138
Prices are inclusive of Delivery Charges.
HTX-440-FLP-DM – Flameproof Temperature and Humidity Transmitter – Duct Mount.
Libratherm offers low cost, rugged and reliable Flameproof Temperature and Humidity Transmitter – HTX-440-FLP-DM for sensing Temperature and RH simultaneously in the environment, whereas HX-440-FLP is for sensing only RH and transmitting the proportional analog value in the form of (4-20)mA or (0-10)VDC. The electronics part of the transmitter is housed in the FLP (Flameproof) head or junction box. so that it can be used in hazardous conditions.
Normally, the signal generated by T+RH sensors is low in strength hence cannot be transmitted over a very long distance, and if done so the signal is likely to drop over a very long cable which will result in the inaccurate measurement of Temperature and %RH.
The transmitter featured here converts these low-level signals from Pt-100 and RH sensor to the equivalent signal of 4-20mA/0-10VDC, which can be transmitted over a very long distance without loss of accuracy in the measurement.
These transmitters operate typically on a 24Vdc power supply (offers a wide range of 18 to 36VDC) and housed in an Aluminum die-casted flameproof head with a suitable length of SS extension pipe duly perforated for inserting the sensor in the Air duct area. The 24VDC supply and 4-20mA are electrically isolated from each other and hence prevent any ground line interferences or loading effect, while connecting to any external measuring/controlling devices like DCS, PLC, HMI or BMS controller DDC, PID, or On/Off controllers. A Standard 2-meter long cable with the end terminal is brought out from a suitable gland attached to the head for ease of connection and wiring.
Applications:
- HVAC / AHU / Humidifiers /Foggers and De-humidifiers.
- Pharma Labs / Manufacturing Plants in the hazardous area.
- Chemical process plants.
Technical Specification
Item | T + RH sensor cum Transmitter / RH sensor cum Transmitter in FLP head or FLP junction box |
---|---|
Built in Sensors | For Temp.: Pt-100 Class A element (Hayashi-Denko Japan make) |
For %Rh: Capacitive type Humidity sensor (Honeywell USA make) | |
Temp. Range | 0 to 60oC (Std. range for HVAC applications) |
Temp. Output | (0-1) VDC / (4-20) mA / (0-10) VDC proportional to 0 to 60oC or proportional to selected temperature range. |
RLmax = 400 Ohms for 4-20mA, RLmin = 100K for 0-10VDC | |
Temp. Accuracy | ± 0.5 oC |
RH Range | 0 to 100% |
%RH Output | (0-1)VDC / (4-20) mA / (0-10)VDC proportional to 0 to 100%Rh |
RLmax = 500 Ohms for (4-20)mA, RLmin = 100K for (0-10)VDC | |
RH Accuracy | +/- 2% @ 25oC and 50% Rh |
Isolation Voltage | Greater than 1.5KV (4-20mA/0-10VDC Output and 24VDC Supply voltage are electrically isolated) |
Supply Voltage | 24 VDC +/-10% @ 100mA max. |
Type | Duct mounted in the Duct hole of 22 mm. |
Enclosure / SS Stem Size | FLP head or JB as per standard / 20mm Dia.x200mm (std. length) |
Optional : Required non std. stem length can be provided on request. | |
Process Connection | ½ inch BSP Thread below the head |
Cable | 4 core or 6 core PVC/PVC insulated 2meter long with standard colour code. Extra length of cable can be provided against order. |
Precautions for use | Avoid condensation and drench. Avoid exposure to saline, inorganic and organic gas. |
Ordering Information
Sr.No. | Model | Product Description | Part no. |
---|---|---|---|
1.1 | HTX-440-FLP-DM | Duct Mount Humidity + Temperature Sensor cum Transmitter in FLP head (SS Steam Size = 20 mm Dia. x 200 mm with 2 x 4-20mA output | 3301-1 |
1.2 | HTX-440-FLP-DM | Duct Mount Humidity + Temperature Sensor cum Transmitter in FLP head (SS Steam Size = 20 mm Dia. x 200 mm with 2 x 0-10V output | 3301-2 |
1.3 | HTX-440-FLP-DM | Duct Mount Humidity + Temperature Sensor cum Transmitter in FLP head (SS Steam Size = 20 mm Dia. x 200 mm with 2 x 0-1V output | 3301-3 |
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