Omega Engineering Thermometer HH12B User Manual

key again cancels HOLD mode, causing the thermome-  
ter to resume taking measurements.  
Input Connector:  
Accepts standard miniature thermocouple connectors (flat  
blades spaced 7.9mm, center to center).  
INTRODUCTION  
This instrument is a portable 3½ digit, compact-sized  
digital thermometer designed to use external K-type ther-  
mocouples as temperature sensor. Temperature indication  
follows National Bureau of Standards and IEC 584 tem-  
perature/voltage tables for K-type thermocouples. Two  
K-type thermocouple is supplied with the thermometer.  
5. “REL” Button  
HH12B  
Press “REL” key to enter Relative mode, zero the dis-  
play, and store the displayed reading as a reference  
value and annunciator REL is displayed. Pressing  
“REL” key over 2 seconds to exit the relative mode.  
ENVIRONMENTAL  
Ambient Operating Ranges:  
0°C to 50°C (32°F to 122°F) <80% R.H.  
Storage Temperature:  
DIGITAL THERMOMETER  
M4614-0208  
IN STRU C TIO N  
SHE E T  
-20°C to 60°C (-4°F to 140°F) <70% R.H.  
Shop online at: omega.com e-mail: info@ omega.com  
For latest product manuals: omegamanual.info  
6. “APO” Button  
INTRODUCTION  
Pressing “APO >2S °C/°F” key to trigger on or off APO  
mode, and then APO annunciator will appear or disap-  
pear on the display. Power is automatically turn off, if  
no operation for a period of time, and “APO” annuncia-  
tor is displayed at upper-left corner when APO function  
is enabled.  
GENERAL  
Display: 3½ digit liquid crystal display (LCD) with maxi-  
mum reading of 1999.  
Low battery indication: The “ ” is displayed when the  
battery voltage drops below the operating level.  
Measurement rate: 1 time/second.  
This instrument is a portable 3½ digit, compact-sized  
digital thermometer designed to use external K-type ther-  
mocouples as temperature sensor. Temperature indication  
follows National Bureau of Standards and IEC 584 tem-  
perature/voltage tables for K-type thermocouples. Two  
K-type thermocouple are supplied with the thermometer.  
Operating environment: 0°C to 50°C at<70% R.H.  
Storage temperature: -20°C to 60°C, 0 to 80% R.H. with  
battery removed from meter.  
Accuracy: Stated accuracy at 23°C±5°C, <75% R.H.  
Battery: Standard 9V battery (NEDA 1604, IEC 6F22).  
Battery Life: 100 hours typical with carbon zinc battery.  
Dimensions: 210mm(H) x 65mm(W) x 35mm(D).  
Weight: approx. 292g including battery.  
Supplied Wire: 4 feet type “K” thermocouple bead wire  
(Teflon tape insulated). Maximum insulation temperature  
260°C (500°F). Wire accuracy ±2.2°C or ±0.75% of read-  
ing (whichever is greater) from 0°C to 800°C.  
7. “MIN/MAX” Button  
SAFETY INFORMATION  
It is recommended that you read the safety and opera-  
tion instructions before using the thermometer.  
Press “MIN/MAX” once to begin recording MIN and  
MAX. Press “MIN/MAX” to select MIN or MAX or  
MAX-MIN or AVG Hold down for 2 seconds to exit  
MIN/MAX function.  
WARNING  
In the MIN/MAX record mode can not power off, must  
leave MIN/MAX record mode then power off.  
To avoid electrical shock, do not use this instrument  
when working voltages at the measurement surface  
over 24V AC or 60V DC.  
OFFSET ADJUSTMENT  
The OFFSET control is set at the factory to allow for the  
variations found in standard thermocouples. By adjust-  
ing the OFFSET control, you can optimize measurement  
accuracy for a particular thermocouple at a particular  
temperature.  
WARNING  
To avoid damage or burns, do not make temperature  
measurement in microwave ovens.  
OPERATING INSTRUCTIONS  
1. “°C/°F” Button: Selecting the Temperature Scale  
Reading are displayed in either degrees Celsius(°C) or  
degrees Fahrenheit(°F). When the thermometer is turned  
on, it is set to the temperature scale that was in use  
when the thermometer was last turned off. To change  
the temperature scale, hold down for 2 seconds “APO  
>2S °C/°F” key.  
CAUTION  
Repeated sharp flexing can break the thermocouple  
leads. To prolong lead life, avoid sharp bends in the  
leads, especially near the connector.  
Adjusting for T1 or T2 Accurate Measure-  
ments  
1. Connect the thermocouple to the T1 or T2 input con-  
nector and turn the thermometer on.  
The  
symbol on the instrument indicates that the op-  
2. Place the thermocouple in a known, stable temperature  
environment at or near the temperature you wish to  
measure, and allow the readings to stabilize.  
3. Slowly adjust the OFFSET control so that the ther-  
mometer reading matches the temperature of the known  
environment. Leave sufficient time between adjustments  
to allow for measurement lag.  
4. The calibration of the thermometer-thermocouple com-  
bination is now optimized for measurements near the  
temperature measured in step 2.  
erator must refer to an explanation in this manual.  
2. Single-Thermocouple Temperature Measurement  
The thermometer displays the temperature of the ther-  
mocouple that is connected to the selected input. Press  
the “T2” key to display the temperature of the thermo-  
couple connected to the T2 input. Press the “T1” key to  
display the temperature of the thermocouple connected  
to the T1 input. The input selection cursor indicates  
which input is selected.  
SPECIFICATIONS  
ELECTRICAL  
Temperature Scale: Celsius or Fahrenheit user-selectable  
Measurement Range:  
-200°C to 1372°C, -328°F to 1999°F  
Auto range: 0.1°C/1°C, 0.1°F/1°F  
Accuracy: Accuracy is specified for operating tempera-  
tures over the range of 18°C to 28°C (64°F to 82°F), for 1  
year, not including thermocouple error.  
±(0.1%rdg+1°C) on -60°C to 1372°C  
±(0.1%rdg+2°C) on -60°C to -200°C  
±(0.1%rdg+2°F) on -76°F to 1999°F  
±(0.1%rdg+4°F) on -76°F to -328°F  
Temperature Coefficient:  
3. Differential Temperature Measurement  
Differential temperature measurement is selected by  
pressing the “T1-T2” key. This causes the thermometer  
to display the temperature difference between the two  
thermocouples (the temperature of thermocouple T1  
minus the temperature of thermocouple T2). The selec-  
tion is indicated by the input selection cursor.  
Resetting the OFFSET Control  
To return the OFFSET control to the factory setting  
without having to recalibrate the thermometer, perform  
the following procedure:  
1. Connect a thermocouple that is in good working order to  
the input that is to be adjusted.  
2. Place the thermocouple in an ice-water bath and allow  
the readings to stabilize.  
3. Slowly adjust the OFFSET control until the thermome-  
ter reads 0°C (32°F).  
0.1 times the applicable accuracy specification per °C from  
0°C to 18°C and 28°C to 50°C (32°F to 64°F and 82°F  
to122°F).  
Input Protection:  
60V dc or 24V ac rms maximum input voltage on any  
4. “HOLD” Button  
Press the “HOLD” key to enter the Data Hold mode, the  
“HOLD” annunciator is displayed. When HOLD mode  
is selected, the thermometer held the present readings  
and stops all further measurements. Press the “HOLD”  
combination of input pins.  
 

Mr Coffee Coffeemaker BVMC ECM260 User Manual
MSB Technology TV Converter Box Rev 1 10 2012 User Manual
Mustang Survival Life Jacket MD5283 258 User Manual
National Instruments Network Card NI 9481E User Manual
NCT Group Lathe NCT 100T User Manual
Nikon Camera Lens AF S DX VR Zoom Nikkor 55 200mm f 4 56G IF ED User Manual
Nokia Cell Phone Nokia pro User Manual
Numark Industries Car Stereo System CDN88 User Manual
Oregon Clock JM889NA User Manual
Oregon Scanner Handheld Laser Scanner User Manual