Temperature and Relative Humidity Data Logger – HTL-804
₹17,325 – ₹25,725
Prices are inclusive of Delivery Charges.
HTL-804 – 8 Channel T + RH Data logger with 2 common High / Low Alarm relay outputs + 16 independent relay drivers + Real time clock + Built in data storage + RS-485 serial interface or RS-232 for serial Dot-matrix printer.
HTL-804-U1 – Uses Rotronic make HYGROCLIP-XD sensors.
HTL-804-U2 – Uses Libratherm make HTS-440 sensors.
HTL-804-U3 – Uses Libratherm make HTS-220 sensors.
HTL-804-U4 – Uses any type of T+RH Transmitters giving 4-20mA signals.
Libratherm offers Microcontroller based 8 channel T + RH Data Logger Model HTLOG-804 which is designed for continuous, simultaneous, and very accurate monitoring and logging of temperature and Relative Humidity values at a maximum of 4 different locations. The logged data are stored in the internal memory in real-time and date. The logged data can also be monitored in the online mode on the PC screen and can also be downloaded to the PC in the offline mode. The facility is also available through the additional serial port to directly print the logged or stored data with real-time/date at the programmable PRINT INTERVAL on EPSON or equivalent Serial Dot Matrix printer.
The Model HTL-804 accepts input from standard T + Rh sensors or transmitters giving voltage or current signals. Users can specify the required type of sensor or transmitter based on what suits the application. If the data logging to be carried out on the small chambers or cold storages then only sensors are preferred. But if the sensing to be carried out across the long length and breadth of the warehouse, greenhouse, etc requiring long cables, then T + RH transmitters are preferred.
Other hardware features include 2 nos. of common for all channels high or low relay outputs, 16 nos. of transistor drivers – available to the user on 20 pin FRC connector and cable. FRC compatible 8 channel relay cards are also available. The respective front panel dual-color LEDs show the status of each channel – whether it is High (Red) or Low (green) when compared to their respective set values.
Standard features include programmable display SCAN time, channel SKIP, and HOLD facility with a manual increment of the channel number using a front panel membrane keyboard.
Key Features:
- Highly accurate and sturdy in operation.
- Monitor and Log T+RH parameters at 4 different locations using single HTLOG-804.
- Incorporates 16 bit ADC and 5 digit display.
- Built in real time clock and Memory for data storage up to 1 year.
- Two common Relays and 16 independent relay drivers for High/Low Alarms.
- Front panel dual colour LED indications for Alarm status.
- Serial interface for Printer and / or Computer interface.
- User friendly Computer software to integrate max. 8 HTL-804 for max. 64 channels.
Applications:
Monitor and Log/Store at various locations T + Rh values in the cold storage, warehouses, stability chambers, walk-in chambers, HVAC systems like Humidifiers or Dehumidifiers, green houses etc.
Data storage with reference to storage interval:
Data Storage Interval | No. of Channels | Total Storage Duration |
---|---|---|
1 min | 8 | 5 days |
5 min | 8 | 28 days |
10 min | 8 | 56 days |
15 min | 8 | 84 days |
30 min | 8 | 168 days |
60 min | 8 | 336 days |
Technical Specifications
Parameter | Description |
---|---|
No. of channels | 8 nos. (4 Temperature + 4 %Rh) |
Input type U1 | 0-1VDC proportional to Temperature and RH from Rotronic Hygroclip-XD |
Input type U2 | Pt-100 + 0-3.3VDC proportional to Temperature and RH from HTS-440 |
Input type U3 | Pt-100 + 0-3.3VDC proportional to Temperature and RH from HTS-220 |
Input type U4 | 4-20mA proportional to Temperature and RH values - scalable |
Range | For Temperature -40 to 60 oC (U1) or -20 to 80oC (U2) OR 0 to 60oC (U3) For RH 0 to 100%. |
Accuracy | Better than ± 0.3?C for temperature using class A Pt-100 element |
Better than +/-1% (U1), Better than +/-3% RH (U2 and U3) | |
Display | 5 digit each 0.5" 7-segment Red /Green LED to indicate Temp and RH values, Alarm values and Real Time Clock and 2 digit 0.3 7-segment Red LED to display channel no. |
Scan Rate | 1 to 99 sec (programmable through front panel keyboard) |
Data Storage Interval | 1 to 99 minutes (user programmable). |
Data Storage | 8000 records. (512KB). |
Print Interval | 1 to 99 minutes (User programmable) |
Skip/Hold Facility | Available through key board in configuration mode |
High / Low Alarm | Common or individual Settable using key pad |
Common Relay output | 2 nos. potential free change over contacts (1 each for high and low output but common for all the channels) |
Alarms Outputs (Optional) | 8 x 2 open collector outputs to drive external relay cards. |
8 nos. for Temperature and 8 nos. for RH. | |
LED Indication | 8 x dual colour LEDs in the front indicating status of each alarm output. |
Serial Interface | RS-485 over MODBUS RTU protocol in the slave mode for PC interface or |
RS-232 serial port for dot matrix printer interface | |
(any one is available at a time) | |
Supply | 90V - 260VAC VAC ± 10% (10VA), 50/60Hz or 24VDC/AC @ 200mA |
Enclosure | Plastic enclosure with polycarbonate front graphic. |
Size of DATALOG-804 | 96 x 96 x 160 mm. |
Size of the Relay Card RLY-8 | 190 L x 120 W x 75 D mm (35 mm DIN rail mount) |
Input & Range Selection
Code | Input | Range |
---|---|---|
A1 | Rotronic Hygroclip XD T+Rh sensor with 2 meter long cable | -40 to 60°C / 0 to 100%Rh |
A2 | Libratherm HTS-220 T + RH sensor with 2 meter long cable | 0 to 60°C / 0 to 100%Rh |
A3 | Libratherm HTS-400 T + RH sensor with 2 meter long cable | -20 to 80°C / 0 to 100%Rh |
A4 | Hygrotx-3000 Transmitter using Hygroclip-XD sensor 2 x 4-20mA with 2 meter long cable | -40 to 60°C / 0 to 100%Rh |
A5 | Libratherm HTX-220 Transmitter 2 x 4-20mA with 2 meter long cable | 0 to 60°C / 0 to 100%Rh |
A6 | Libratherm HTX-440 Transmitter 2 x 4-20Ma with 2 meter long cable | 0 to 60°C / 0 to 100%Rh |
Ordering Information
Sr. No. | Model | Description | Part No. |
---|---|---|---|
1.1 | HTL -804-U1 | Input: Type U1 (from Hygroclip XD sensor) | 3005-1 |
Output: 2 Common Relays | |||
Serial Interface : RS-232 for Printer Interface | |||
1.2 | HTL -804-U1 | Input: Type U1 (from Hygroclip XD sensor) | 3005-2 |
Output: 2 Common Relays | |||
Relay Drivers: 16 transistor output to drive external 16 channel relay cards | |||
Serial Interface : RS-232 for Printer Interface | |||
1.3 | HTL -804-U1 | Input: Type U1 (from Hygroclip XD sensor) | 3005-3 |
Output: 2 Common Relays | |||
Serial Interface : RS-485 for Computer Interface | |||
1.4 | HTL -804-U1 | Input: Type U1 (from Hygroclip XD sensor) | 3005-4 |
Output: 2 Common Relays | |||
Relay Drivers: 16 transistor output to drive external 16 channel relay cards | |||
Serial Interface : RS-485 for Computer Interface | |||
2.1 | HTL -804-U2 | Input: Type U2 (from HTS-440) | 3006-1 |
Output: 2 Common Relays | |||
Serial Interface : RS-232 for Printer Interface | |||
2.2 | HTL -804-U2 | Input: Type U2 (from HTS-440) | 3006-2 |
Output: 2 Common Relays | |||
Relay Drivers: 16 transistor output to drive external 16 channel relay cards | |||
Serial Interface : RS-232 for Printer Interface | |||
2.3 | HTL -804-U2 | Input: Type U2 (from HTS-440) | 3006-3 |
Output: 2 Common Relays | |||
Serial Interface : RS-485 for Computer Interface | |||
2.4 | HTL -804-U2 | Input: Type U2 (from HTS-440) | 3006-4 |
Output: 2 Common Relays | |||
Relay Drivers: 16 transistor output to drive external 16 channel relay cards | |||
Serial Interface : RS-485 for Computer Interface | |||
3.1 | HTL -804-U3 | Input: Type U3 (from HTS-220) | 3007-1 |
Output: 2 Common Relays | |||
Serial Interface : RS-232 for Printer Interface | |||
3.2 | HTL -804-U3 | Input: Type U3 (from HTS-220) | 3007-2 |
Output: 2 Common Relays | |||
Relay Drivers: 16 transistor output to drive external 16 channel relay cards | |||
Serial Interface : RS-232 for Printer Interface | |||
3.3 | HTL -804-U3 | Input: Type U3 (from HTS-220) | 3007-3 |
Output: 2 Common Relays | |||
Serial Interface : RS-485 for Computer Interface | |||
3.4 | HTL -804-U3 | Input: Type U3 (from HTS-220) | 3007-4 |
Output: 2 Common Relays | |||
Relay Drivers: 16 transistor output to drive external 16 channel relay cards | |||
Serial Interface : RS-485 for Computer Interface | |||
4.1 | HTL -804-U4 | Input: Type U4 (from T + RH Transmitters) | 3008-1 |
Output: 2 Common Relays | |||
Serial Interface : RS-232 for Printer Interface | |||
4.2 | HTL -804-U4 | Input: Type U4 (from T + RH Transmitters) | 3008-2 |
Output: 2 Common Relays | |||
Relay Drivers: 16 transistor output to drive external 16 channel relay cards | |||
Serial Interface : RS-232 for Printer Interface | |||
4.3 | HTL -804-U4 | Input: Type U4 (from T + RH Transmitters) | 3008-3 |
Output: 2 Common Relays | |||
Serial Interface : RS-485 for Computer Interface | |||
4.4 | HTL -804-U4 | Input: Type U4 (from T + RH Transmitters) | 3008-4 |
Output: 2 Common Relays | |||
Relay Drivers: 16 transistor output to drive external 16 channel relay cards | |||
Serial Interface : RS-485 for Computer Interface | |||
5.1 | MSI-RLY-8 | 8 channel relay card compatible with DATALOG-804 | 3384-1 |
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