REED ST-610B User manual

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Model ST-610B
Digital Thermocouple
Thermometer
Instruction
Manual

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2
Table of Contents
Safety ............................................................................................ 2
Features......................................................................................... 3
Specications.............................................................................3-4
Operating Instructions................................................................... 5
Additional Functions...................................................................... 5
Battery Replacement..................................................................... 6
Safety
Read the safety and operation instructions before using this thermometer.
Warnings
• Avoid electrical shock by not using this instrument when voltages at the
measurement surface exceed 24V AC or 60V DC. Also do not discon-
nect the thermocouple connectors from the thermometer before remov-
ing the cover.
• To avoid damage or burns do not make temperature measurements in
microwave ovens.
Cautions
• Repeated sharp exing can break the thermocouple leads. To prolong
lead life, avoid sharp bends in the leads, especially near the connector.
• The symbol on the instrument indicates that the operator must refer
to “input protection” in this manual (see page 3).
For service on this or any other REED product or information on other
REED products, contact REED Instruments at [email protected]

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Features
• Compact single input thermocouple thermometer designed for eld use
• Accuracy to 0.5%
• Display maximum reading plus Data Hold
• Large LCD display with backlight
• User selectable °C or °F or Kelvin
• User selectable 0.1°C or 1°C (0.1°F or 1°F) resolution
• Accepts K-type thermocouples (see page 4 for selection)
• Includes 9V battery and holster
Specications
Electrical
Temperature Scale: Celsius (C°), Fahrenheit (°F) or Kelvin (K)
Measurement Range:
-50°C to 1300°C, -58°F to 2000°F, 223K to 2000K
Resolution: 1°C or 1°F, 0.1°C or 0.1°F,1 K
Accuracy
Accuracy is specied for operating temperatures
over the range of 18°C to 28°C (64°F to 82°F),
for 1 year, not including thermocouple error
±2°C -50°C to 0°C
±4°F -58°F to 32°F
±5K 223K to 273K
±(0.5% rdg+1°C) 0°C to 1000°C
±(0.8% rdg+1°C) 1000°C to 1300°C
±(0.5% rdg+2°F) 32°F to 2000°F
±(1.0% rdg+2K) 273K to 2000K
Temperature Coefcient:
0.1 times the applicable accuracy specication
per °C from 0°C to 18°C and 28°C to 50°C
(32°F to 64°F and 82°F to 122°F)
Input protection: 60V DC or 24V RMS AC maximum input
voltage on any combination of input pins
Reading Rate: 2.5 times per second
Input Connector: Accepts standard miniature thermocouple
connectors (at blades spaced 7.9mm,
center to center)
continued ...

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Environmental
Ambient Operating Range: 0°C to 50°C (32°F to 122°F)
Storage Temperature: -20°C to 60°C (-4°F to 140°F)
Relative Humidity: 0% to 80% (0°C to 35°C) (32°F to 95°F)
0% to 70% (35°C to 50°C) (95°F to 122°F)
General
Display: 3 ½ digit liquid crystal display (LCD)
with a maximum reading of 1999
Battery: Standard 9V battery (NEDA 1604, IEC 6F22)
Dimensions: 162mm (H) × 76mm (W) × 38.5mm (D)
Weight: 210g
Optional Accessories:
Model LS-109 Surface Probe: Ribbon-style surface probe
Model LS-139 Surface Probe: Spring loaded probe is ideal
for all high temperature applications
Model LS-104 Right Angle Surface Probe: Unique right angle
design allows temperature of hard to reach areas to be taken
Model LS-103 Air/Gas Probe: Perforated shield permits fast
response while providing element protection
Model LS-134A Needle Tip Probe: Medium gauge hypodermic
needle tip, used to measure softer foodstuffs, rubber and solids
Model LS-107 General Purpose Probe: Used to measure both air
and liquids, but is recommended for immersion applications
For service on this or any other REED product or information on other
REED products, contact REED Instruments at [email protected]

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Operating Instructions
Selecting the Temperature Scale
Readings are displayed in either Celsius (°C), Fahrenheit (°F) or Kelvin
(K). 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, press the °C, °F or K buttons.
Selecting the Display Resolution
The thermometer allows two choices of resolution:
High resolution: 0.1°C or 0.1°F
Low resolution: 1°C or 1°F
Additional Functions
Overload Display
The digital display will indicate “1” when the input exceeds the measure-
ment range selected.
If measuring above 199.9º, change the resolution to 1º. Be certain to seat
the thermocouple connector properly and that the leads are not broken.
Hold Mode
Pressing the HOLD button to enter the Data Hold mode, the “HOLD”
indicator is displayed. When “HOLD” mode is selected, the thermometer
will “freeze” the present readings and stops all further measurements.
Pressing the HOLD button again cancels “HOLD” mode, causing the
thermometer to resume taking measurements.
Max Mode
Press the MAX button to enter the “MAX” mode. The thermometer then
records and updates the maximum values and the “MAX” indicator
appears on the display. Press the MAX button again to exit the “MAX”
recording mode. In the “MAX” mode, press the HOLD button to stop the
recording, press HOLD again to resume recording.

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Backlight Mode
Press the BACKLIGHT button to turn on the LCD backlighting function.
The LCD Backlighting will automatically turn off approximately 5 seconds
after the Backlight button is released.
Tc (Temperature Compensator) Checking Mode
Press and hold the Tc button to enter the Temperature Compensator-
Checking mode. The thermometer will display the inside temperature.
Battery Replacement
WARNING: To avoid possible electric shock, disconnect the
thermocouple connectors from the thermometer before
removing the cover
The low battery symbol " " appears on the lower right of the LCD when
the 9V battery needs to be replaced.
1. Turn the meter off and disconnect the temperature probe.
2. Remove the rubber holster that surrounds the entire meter by pulling
it over the top of the meter.
3. Remove the small Phillips head screw on the rear of the meter.
4. Open the battery compartment and replace the 9V battery.
5. Re-assemble the meter before operating.

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