Page 3 - Introduction; Caution; Electrical and Safety Symbols
1 Introduction W Caution To extend sensor life, keep the sensor’s protective shutter closed whenever the meter is not in use. The Fluke Model 971 (hereafter referred to as “the Meter” is a battery powered meter that measures relative humidity and temperature. Through a few easy to use controls, the ...
Page 4 - Display
971 Users Manual 2 Display 1 3 7 6 4 5 2 bdm002f.eps No. Symbol Meaning 1 B Low battery. 2 Wet bulb or dew point temperature displayed. 3 M MAX, MIN, AVG Min Max Record enabled. Maximum, minimum, or average reading displayed. 4 °F, °C Temperature measurement units. 5 % RH Relative humidity measureme...
Page 5 - Operation; Note; Dew Point and Wet Bulb Temperature
Temperature Humidity Meter Operation 3 Operation Note When moving from one temperature/humidity extreme to another, allow time for the Meter to stabilize. After opening the sensor’s protective shutter, press O to turn on the Meter and start taking measurements. Temperature readings are displayed in ...
Page 6 - Min Max Record; Saving and Recalling Measurements
971 Users Manual 4 Min Max Record When enabled, Min Max Record stores a new measurement when it is either higher or lower than a previously stored maximum or minimum measurement. Press N to start Min Max Record. M appears in the display to indicate Min Max Record mode is enabled. Note The temperatur...
Page 7 - Automatic Power Off
Temperature Humidity Meter Operation 5 Pressing S saves the present readings to a memory location. L and the memory location number appear in the display to indicate the readings have been stored. Press W to return the display to the present reading. After all 99 memory locations are filled, each su...
Page 8 - Maintenance; Battery Replacement; appears in the display, replace the batteries as
971 Users Manual 6 Maintenance Battery Replacement Meter power is supplied by four 1.5 V (AAA size) batteries. When B appears in the display, replace the batteries as soon as possible. To replace the batteries: 1. Back out the screw at the top of the battery door and lift the door away from the Mete...
Page 9 - Cleaning
Temperature Humidity Meter Maintenance 7 APO Enable/Disable bdm002f.eps Figure 1. Battery Compartment Cleaning W Caution To avoid damage to the case, do NOT use abrasives or solvents for cleaning the meter. Periodically wipe the case with Fluke Meter Cleaner or a damp cloth and detergent.
Page 10 - Specifications
971 Users Manual 8 Specifications Temperature Range: Accuracy: Resolution: Update rate: Sensor type: -20 to 60 °C (-4 to 140 °F) ±0.5 °C on 0 to 45 °C ±1.0 °C on -20 to 0 °C, 45 to 60 °C ±1.0 °F on 32 to 113 °F ±2.0 °F on -4 to 32 °F, 113 to 140 °F 0.1 °C /°F 500 ms NTC Relative Humidity Range: Accu...
Page 12 - LIMITED WARRANTY AND LIMITATION OF LIABILITY
971 Users Manual 10 LIMITED WARRANTY AND LIMITATION OF LIABILITY This Fluke product will be free from defects in material and workmanship for one year from the date of purchase. This warranty does not cover fuses, disposable batteries, or damage from accident, neglect, misuse, alteration, contaminat...