Fluke 5623A - Manuals

iii Tables Table 1 International Electrical Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table 2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1 Before You Start 1.1 Symbols Used Table 1 lists the International Electrical Symbols. Some or all of these symbolsmay be used on the instrument or in this manual. Symbol Description AC (Alternating Current) AC-DC Battery CE Complies with European Union Directives DC Double Insulated Electric Shock...

Symbol Description Canadian Standards Association OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC1010-1 refers to thelevel of Impulse Withstand Voltage protection provided. Equipment of OVERVOLTAGE CATE-GORY II is energy-consuming equipment to be supplied from the fixed installati...

• Keep the shipping container in case it is necessary to ship the PRT. Incor-rect packaging of the PRT for shipment can cause irreparable damage. 1.3 Hart Scientific Authorized Service Centers Please contact one of the following authorized Service Centers to coordinateservice on your Hart product: H...

Fluke South East Asia Pte Ltd. Fluke ASEAN Regional Office Service Center 83 Clemenceau Avenue #15-15/06 Ue Square 239920 SINGAPORE Phone: +65-737-2922 Telefax: +65-737-5155 E-mail: [email protected] When contacting these Service Centers for support, please have the following information availab...

2 Introduction 2.1 General The Platinum Resistance Thermometers (PRT) model 5623A is designed to bea secondary standard interpolating instrument converting temperature to resis-tance. The 5623A assembly design allows for exposure to very cold tempera-ture (–200°C) and is an ideal reference for verif...

3 Specifications and Warranty 3.1 Specifications See Table 2. Temperature Range –200°C to 156°C Entire Assembly Range –200°C to 156°C Accuracy (Includes calibrationuncertainty and short-termstability) ±0.05°C (full range) Long-term Drift (°C) <±0.01 at 0°C per year, when used periodically at 200 ...

4 Installation 4.1 Lead Wire Identification The 5623A PRT is equipped with a four-wire cable (see Figure 1). Four leadwires are used to cancel lead wire resistance. For best results, the readout de-vice should be equipped to handle four-terminal resistors. The lead wires are two different colors. Le...

5 PRT Care and Handling Guidelines 5.1 PRT Care CAUTION: READ THIS SECTION BEFORE REMOVING THE PRT FROM THE SHIPPING BOX OR CASE Care must be taken in handling the PRT to maintain calibration accuracy. Careshould still be used when handling the PRT even though the Inconel sheath isdurable and provid...

• DO NOT screw a clamp down so tight that it dents the sheath. This can permanently damage the PRT. 12 Hart Scientific 5 PRT Care and Handling Guidelines

7 Troubleshooting 7.1 Troubleshooting In the event that the probe appears to function abnormally, this section may beof use in solving the problem. Several possible problem conditions are de-scribed along with likely causes and solutions. If a problem arises, please readthis section carefully and at...