HT-LCD – Humidity & Temperature Data Logger
Brand: Intech
$515.00 Excl. GST
All prices are in NZ$, and GST exclusive and are subject to change without notice.
Product Details
The HT-LCD is a handheld humidity data logger with an integral humidity sensor and liquid crystal display. Both Relative Humidity and Dew Point can be displayed and logged. The HT-LCD uses a Sensirion SHT11 digital humidity sensor giving ±3.0%RH accuracy from 20%RH to 80%RH.
This logger is designed for indoor use (IP 40). For outdoor applications, we recommend using a THT-LCD with a Seahorse Logger Enclosure.
The THT-LCD logger is identical to the HT-LCD logger, except that it has an external Humidity/Temperature probe.
A DLC8USB [USB] download cable (2m) is required to connect the HT-LCD to a computer.
Features
- Storage capacity of over 500,000 samples.
- Easy to use LCD menu options.
- LCD display shows logger status and alarm status continuously.
- The data from any logger that records Temperature and Relative Humidity can be processed, by the Omni7 software, to add Absolute Humidity and/or Dew Point readings to the data.
- The battery voltage of the logger can be logged if required.
- The logger can be run in either “Stop when memory is Full”, “Loop Around” mode or set to stop at a future time.
- The logger can be started “Now”, at a given time in the future, on a condition (e.g. temperature >20ºC), or on Trigger (push button on logger).
- The data from any logger that records Temperature can now be processed, by the Omni7 software, to give daily, weekly and monthly accumulated Grow Degree Day reports for a wide range of horticultural crops.
Technical Specs
| TYPE | HT-LCD | |||||||||
| Humidity Sensor: | Sensor Position | The sensor is mounted on an end plate at the top of the logger | ||||||||
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| Dew Point: | Sensor Type | The Dew Point is calculated from the current Relative Humidity and Temperature | ||||||||
| Accuracy | ±2ºC (this is determined by the ±3.0%RH accuracy of the humidity sensor | |||||||||
| Resolution | 0.1ºC | |||||||||
| Temperature: | Sensor Type | Thermister | ||||||||
| Linear accuracy over range | ±0.3ºC (0ºC to 70ºC) | |||||||||
| Repeatability | ±0.1ºC | |||||||||
| Long term stability | ±0.1ºC | |||||||||
| Logger: | Working Temperature | -20ºC to +70ºC | ||||||||
| Storage Temperature | -30ºC to +70ºC | |||||||||
| Sampling Rate | 1 second minimum, 10 hours maximum; in 1 second intervals | |||||||||
| Storage capacity | 522,240 samples logging Relative Humidity only 362 days with 1 min logging interval (Relative Humidity only) 4.9 years with 5 min logging interval (Relative Humidity only) 174,080 samples logging Relative Humidity Dew Point and Temperature |
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| Alarms | Two independent Alarms Triggered on any combination of six user configurable Alarm Conditions Both alarms can be configured to send SMS messages Two Open Collector Alarm Outputs |
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| Alarms can be visually checked on the LCD Display or by using the Omni7 software | ||||||||||
| Start modes | Start immediately; Start on date/time; Start on Condition (e.g. Humidity <30%RH); Start on trigger (push button on logger) |
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| Stop modes | Stop when memory is full / Stop on date/time / Loop around (continues logging) | |||||||||
| Logging modes | Each channel can be set to log any combination of: – Point readings – Average reading – Maximum reading – Minimum reading |
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| Warning: When using the Average, Maximum or Minimum reading(s), the logger reads the attached sensor(s) every second. This will reduce battery life. | ||||||||||
| Battery | One to Five years life depending on usage as above Using the logger in temperatures below -5°C (23°F) will reduce battery life User Replaceable; Two 3.6 volts Lithium AA cells The data is retained in the case of battery failure Battery Status Monitor on LCD display and in Omni7 software |
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| Download time | 9 minutes 30 seconds for Full Logger | |||||||||
| Case material | ABS Plastic | |||||||||
| IP Rating | 40 | |||||||||
| Weight | 185g | |||||||||
| Size | 130mm x 80mm x 30mm | |||||||||
| Communication Connector | The HT-LCD has a 8 pin Mini-DIN female socket | |||||||||
| Pinout | Pin 1 Common Pin 2 RS232 RX (out of logger) Pin 3 RS232 TX (into logger) Pin 4 RS232 CTS (out of logger) Pin 5 RS232 RTS (into logger) Pin 6 Alarm 1 Open Collector Output Pin 7 Alarm 2 Open Collector Output Pin 8 Power 5 to 16V dc |
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Software
Learn about Omni7 Software for Data Loggers.
Download Omni7 Software for Data Loggers.
A DLC8USB [USB] download cable (2m) is required to connect the HT-LCD to a computer.
Documents
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