Omega M3185/1098 manual Assembly 3.1 Battery Installation, RH31 Indicator Assembly, Key Operation

SECTION 3 ASSEMBLY 3.1 Battery Installation

BATTERY EXCHANGE METHOD

1. How to open the case

The case can be opened by removing two screws on the rear panel of the case.

In this case, the case can be opened easily be pulling the hand strap in the open direction, while pressing the upper case.

2. How to remove the battery

Insert a screwdriver to the bottom of the battery connector while holding the battery connector by fingers, and disconnect the connector by pushing it upward.

3. Battery exchange

Connect the battery connector to the connector on the PC Board. In this case, a confirmation chime sounds to show the end of the exchange.

Never disassemble, short, charge, throw into a fire, or heat the used battery nor directly solder it to the battery body, otherwise a rupture accident or an electrolyte leak failure may occur.

4. How to close the case

Insert the battery cord to the guide of the upper case without protruding it out of the case. Mount the hand strap.

Fit the upper and lower cases to each other and fasten two screws.

3.2 RH31 Indicator Assembly

Slide the RH31 indicator into the vinyl case provided in order to protect the case during use. Plug in the probe that is best suited for your application (see Figure 2 above for probe selection). The temperature/humidity probes are plugged into the socket located on the top of the indicator. Be sure to line up the “keys” on each connector before plugging in the probe.

3.3 How To Switch From ˚F/˚C

1.Remove 2 back cover screws.

2.Jumper pins 1 & 2 for ˚C, pins 2 & 3 for ˚ F.

3.Put back lower case and tighten screws.

Cover

Screws

˚ C ˚ F

4.3 Key Operation

Names of keys Contents

ON-OFF The power supply is turned on by pressing this key once and turned off by pressing this key again.

A confirmation chime sounds after turning on the power supply, and the power supply turns off automatically after about 3 minutes.

For canceling the auto off function, press [ON-OFF] key together with [CLEAR] key.

A confirmation chime sounds three times.

For turning off the power supply, press [ON-OFF] key.

•CLEAR By pressing this key, a confirmation chime sounds, the display setting functions (hold, humidity operation selection) are canceled, and the unit returns to the initial condition.

When the memory function is provided, (1) data collection is stopped by press- ing this key halfway during data collection (2) data readout is stopped by press- ing this key halfway during data readout, and also (3) the unit is reset to the last settting by pressing this key halfway during the time setting.

•HOLD The measured values of temperature and humidity are held by press- ing this key and the unit is set to the measuring condition (the hold condition is canceled) by pressing this key once more.

During the hold of measured values, ˚ C(˚ F) flickers.

•SEL The indicating value is switched in the order of [relative humidity → dew point → wet-bulb temperature].

Relative humidity: %RH

Dew point: ˚C(˚ F)

Wet-bulb temperature: ˚C(˚ F) flickering

•READ Press this key for advancing the numeric stepwise when setting the present time or data collection time.

Press this key when transmitting collection data to the personal computer. •WRITE Press this key for switching the setting items such as year, month, day, hour, and minute when setting the present time and data collection time.

TROUBLESHOOTING Symptoms Check contents

No display appears – Problem 1

Are the indicator and temperature-humidity sensor connected to each other securely?– Check

Has the battery life come to an end? – Check Is the battery set correctly? – Check Display remains unchanged – Problem 2

Is the [HOLD] key pressed? (˚ C (˚ F) flickers in this case) – Check Measured values are abnormal – Problem 3

[Is the unit correct?] – Check

Bar display appears in the upper column. – Problem 4 [Over-range]

Bar display appears in the lower column – Problem 5 [Under-range]

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