RH520 EXTECH

DESCRIPTION:

The RH520 runs on battery power or AC adaptor (4.5VDC 300mA). Battery power consists of three (3) ‘AA’ batteries. See the Battery Replacement section of this manual when changing/installing the batteries. Note: Batteries and adaptor are supplied.

Plug the AC adaptor in the AC adaptor jack shown in the Description section. The batteries will act as battery back-up in the event of an AC power failure.

Once the batteries are installed or the adaptor properly connected, the RH520 will begin displaying.

In the unlikely event that the AC power AND the battery back-up fails, the RH520 will require a “Programming Reset” to reset the display. Press the RESET button located inside the battery compartment. “Reset” clears all settings. Time, Date and the logging interval need to be entered. The measurement data and alarm history, however, will still be retained in the non-volatile memory.

The 5-segment battery life indicator allows the user to track the status of the battery. When all 5-segments are dark, the battery is fully charged. Segments switch off as the battery ages. When the battery indicator has only one segment left the batteries must be replaced immediately.

1.           Remote sensor

2.           Sensor cable

3.           LCD Display

4.           Swivel keypad / table-top stand

5.           PC interface jack

6.           Universal alarm Module jack

7.           AC adaptor jack

DATA RESET button (clears recorded measurement data and alarm history)

Temperature units select switch (C or F)

PROGRAMMING RESET button (clears programming changes but retains measurement data and alarm history)

Display CONTRAST adjust

Sensor cable storage area

‘AA’ 1.5V batteries

Sensor cable run

Wall mount holes

Temperature measurement graph

Internal memory usage meter

Vertical axis scale limits

Cursor / Alarm indicators

Push-button lock-out status indicator

Time display

Relative Humidity (RH) measurement graph

Date display

Function indicators

Numerical temperature reading display

Numerical RH reading display

Battery status indicator

SPECIFICATION:
Display  Large, backlit graphical LCD Temperature measurement range  -20.0 to 140.0oF (-28 to 60oC) Humidity measurement range      10 to 95%

Dew point temperature                -20.0 to 140.0oF (-28 to 60oC)

Accuracy              ±3.0% RH and 1.8oF (1oC) for temperature

Internal memory storage             49,152 complete reading sets

Sampling interval             Selectable recording rate: 0.1 to 199.9 minutes

Graph scaling     User selectable in 10oF, 5oC and 10% increments

Low battery indication   5-segment battery indicator

Power supply    Three (3) ‘AA’ batteries and AC adaptor (included)

Battery life          4 weeks typical, using alkaline batteries Operating Temperature               CONTROL MODULE and DISPLAY:

32 to 120oF (0 to 50oC)

SENSOR: -20 to 140oF (-28 to 60oC)

Operating Humidity        CONTROL MODULE and DISPLAY: 90% RH max.

SENSOR: 95% RH max.