Omega CT485B-110V-G-AL User Manual page 8

Item Description
6 ac Power Jack
7 Power Switch
8 °C/°F Mode Switch
9 1/7/32 Day Mode Switch
10 Alarm Display Buttons
(HIGH, SET, LOW)
11 LCD Display
12 Display Selection Switch
13 Temperature/Humidity Sensor
14 Sensor Holder (clip)
15 Pen Arm and Holder (2 each)
16 Latch Button
17 Control Panel Door Lock
18 Decorative Foot Cover
19 Control Panel Door
20 Light Bulb/Display Backlighting
Push Button
Allows the unit to be powered from ac power using the ac adaptor
(110Vac stepped down to 9Vdc) supplied.
Turns unit ON (|) or OFF (O).
Selects °C or °F chart operation. Note the following :
When switching from °C to °F, ONLY the humidity pen will move. The
humidity zero point and scaling are different on C° and °F paper, causing the
humidity pen to move when switching from °C to °F. The temperature zero
point and scaling are the same on °C and °F paper (only the units change).
Therefore, the temperature pen will not move.
Selects chart type, 1, 7, or 32 day operation.
These buttons are accessible behind the control panel door.
High and Low buttons:
1. Selects and changes calibration codes.
2. Chooses the high/low alarm limit (for either °F, °C or %RH).
3. Selects and changes the alarm limits.
4. Checks alarm limits in operating mode.
5. Low button only: when pressed during power up, disables the
alarm function.
Set button:
1. Activates calibration mode when pressed during power up.
2. Enters calibration codes in memory.
3. Activates alarm limits.
4. Enters alarm limits in memory.
5. Disables the sounding of the alarm (and activation of the relay)
for 10 seconds.
Displays temperature and humidity values (depending on the setting of
Display Selection Switch.
Allows the user to select display of the current relative humidity, or
ambient temperature in either °C or °F. Refer also to item #10.
Houses the electronic sensors which measure ambient temperature and
relative humidity.
Holds the temperature/humidity sensor to the side of the recorder.
Holds and moves the temperature and humidity pens.
Releases and secures the recorder's door.
Locks or unlocks the control panel door.
Stays in place for wall-mounting the recorder. The cover must be
removed for upright bench-top use (otherwise the recorder topples over)!
Covers the alarm display buttons (High, Set, and Low), power switch,
1/7/32 day mode switch, and °F/°C mode switch.
Turns the light bulbs and LCD Backlighting on and off
Function
1
Introduction
1-3