N9002 THERMOMETER OPERATING INSTRUCTIONS
CONTENTS PAGE GENERAL INFORMATION ......................................................... 2 CALIBRATION, CERTIFICATION AND SERVICE....................... 3 1. N9002 DESCRIPTION ................................................................. 4 2. N9002 WITH BIOCOTE® PROTECTION .................................... 4 3. OVERVIEW OF DISPLAY SYMBOLS ......................................... 5 4. THERMOMETER SETUP ............................................................ 6 5.
GENERAL INFORMATION It is recommended that you read the safety and operation instructions before using this instrument. WARNING TO AVOID ELECTRIC SHOCK DO NOT ALLOW ANY PROBE OR SENSOR TO COME INTO CONTACT WITH LIVE ELECTRICAL POWER CONDUCTORS WITH VOLTAGES IN EXCESS OF 30V AC RMS OR 60V DC. CAUTION Temperature Measurement Probes This precision instrument has been designed for use with the extensive range of Comark temperature probes.
CALIBRATION, CERTIFICATION AND SERVICE No. 0451 Certification Comark can provide certificates of calibration for its whole product range, to suit ISO 9000 and other quality assurance procedures, food hygiene regulations, HACCPs and environmental regulations. Comark certificates are produced by independent quality controlled processes which compare product performance against agreed National Standards. For peace of mind and best practice Comark recommend annual certification/recalibration.
1. N9002 DESCRIPTION The N9002 is a high performance handheld industrial thermometer housed in the proven 'N' series case for ultimate strength and durability. It has IP67 certification against water and dust penetration. The case is easy to clean and the sealed soft-touch keypad provides smooth operation.
3. OVERVIEW OF DISPLAY SYMBOLS A – Activated during DIFFerential mode with both T1 and T2 enabled. B – Main Temperature display. T1 is displayed here when enabled. Will display DIFFerential temperature in two-channel DIFF mode. C – Displays current scale in use. D – CAL is displayed to indicate that the annual instrument re-calibration is due. E – Nominally used for displaying time, but will display temperature in DIFFerential mode, and MAX/MIN mode.
4. THERMOMETER SETUP Pressing SETUP will enter the setup menu for the thermometer. The following stages are included in the SETUP menu and are accessed sequentially, i.e. each stage must be access in turn to reach the one required. Pressing ENTER will accept the setting and step on to the next function. The setup menu can be exited using the CLEAR key. Settings changed in previous steps will however be retained. 4.
4.5 Date and Time Setup Use the UP/DOWN arrow keys to select the minutes. Press ENTER/HOLD Use the UP/DOWN arrow keys to select the required hours in 24 Hr Format. Press ENTER/HOLD. Use the UP/DOWN arrow keys to select the century. Press ENTER/HOLD. Select the year using the UP/DOWN arrow keys. Press ENTER/HOLD. Use the UP/DOWN arrow keys to select the month. Press ENTER/HOLD. Use the UP/DOWN arrow keys to select the day. Press ENTER/HOLD to continue. 4.
If the correct setting is not known, contact Comark or your Distributor for details. Press ENTER/HOLD to finish and exit from SETUP. 5.0 SWITCHING ON AND OFF 5.1 Display Test The ‘ON/OFF’ button on the keypad switches on the instrument. When the instrument is first switched on the unit performs a self-test and the whole display will be energised. After a short pause the display will revert to normal temperature display. The current time is also displayed. 5.
6.3 Differential Mode (DIFF) There are two DIFF modes available for the N9002, single channel and twin channel. If only one channel (T1 or T2) is enabled the instrument will memorise the temperature at the moment the DIFF button is pressed and displays this temperature on the lower left area of the LCD. It also displays the difference between the current temperature and the memorized temperature on the lower right area of the LCD. The main display area shows the current temperature.
9.0 CHANGING THE BATTERIES The symbol BAT flashes on the display as soon as the battery voltage drops to an initial warning level. During this first level of low battery the instrument can be operated normally, but it is recommended that the battery be replaced as soon as possible. If the battery is allowed to discharge further there is a second level of low battery, which is indicated by the symbol remaining on and not flashing. Replace the battery straight away after seeing this symbol.
10. N9002 THERMOMETER SPECIFICATIONS Measurement Thermocouple types K, N, T, J, R, S, E, B Connector 2-pin sub-min connector Measurement Range (°C) Type K Type N Type T Type J Type R Type S Type E Type B From (°C) -200 -200 -200 -200 -50 -50 -200 +100 Scales °C, °F and Kelvin Resolution 0.1° Instrument Accuracy at +23°C Better than ± 0.1 % of reading ± 0.2°C Temperature Coefficient Less than ± 0.01 % of reading ±0.
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Comark Instruments 52 Hurricane Way, Norwich, Norfolk, NR6 6JB United Kingdom Tel: +44 844 815 6599 Fax: +44 844 815 6598 Email: sales@comarkinstruments.com Website: www.comarkinstruments.com Comark Instruments PO Box 500, Beaverton OR 97077 USA Tel: 503 643 5204 Fax: 503 644 5859 Email: sales@comarkusa.com Website: www.comarkusa.com © Comark Instruments Stock No.
