Reference Multimeter and 8 ½ Digit Multimeter
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PRT
Push , (More), then (PRT) (platinum resistance
thermometer) to use the PRT measure function. The PRT measure function
provides a temperature readout by measuring the resistance of a connected
PRT. 2 Wire, 3 Wire, or 4 Wire measurements can be made.
PRT Submenu
This section explains the PRT submenu.
(Probe R
o
): Selects either a 100 Ω or 25 Ω PRT.
(Resolution): The default resolution is 5 Digits. The other choice is
6 Digits.
(Probe): Allows selection of 2 Wire, 3 Wire, or 4 Wire PRTs.
(Units): This softkey opens a menu to select the desired temperature
units, K, °C, or °F.
(Measure Setup): Provides access to a menu that changes the reading
rate similar to DCV. Choices are Auto, Auto Fast, and Manual.
Measure PRTs
Before you connect a 2- or 3-wire PRT, you must perform Input zero on the
resistance ranges shown in Table 15.
Table 15. Measure PRTs
Probe R
0
2-wire PRT 3-wire PRT
25 Ω 100 Ω, LoI ON, 2-wire
100 Ω, LoI ON, 2-wire and 4-
wire
100 Ω
100 Ω, LoI and 1 kΩ, LoI OFF,
2-wire
100 Ω, LoI and 1 kΩ, LoI OFF,
2-wire and 4-wire
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