Typical representation of REED ST-9800T 400A-600A Clamp Multimeter Product picture of ST-9800T REED 400A-600A Clamp Multimeter for illustration purposes only. Actual product may vary.

400A-600A Clamp Multimeter

Comprehensive clamp on multimeter manufactured by Reed designed to measure AC/DC voltage, DC currents, resistance as well as temperature. Reed ST-9800T comes with a full range of diagnostic capabilities. Simple to measure. Easy to use.

Accredited calibration/NIST traceable calibration certificate for REED ST-9800T 400A-600A Clamp Multimeter might be available on request (for an extra charge). Please contact us for more info.

REED 400A-600A Clamp Multimeter: instrument description

Please note: this is a discontinued model, information shown here is for reference only. To replace the Reed ST-9800T we recommend you this REED Power Clamp Meter CM-9940 which measures both AC and DC current and voltage up to 600 V, plus temperature.

The Reed ST-9800T is a True RMS AC/DC Clamp Meter designed for AC, DC, and AC/DC environments. In addition to the current features Reed ST-9800T comes with Type K thermocouple temperature sensor, offer high resolution accuracy, safety operations and reliable performance. Data hold and peak hold functions are also available.

REED ST-9800T Features

  • Clamp size Opening 1.3” (33mm) approx
  • Diode Test: Test current of 0.3mA typical; Open circuit voltage 1.5V DC typical.
  • Continuity Check: Threshold <50Ω; Test current < 1mA
  • Low Battery Indication: “BAT” is displayed
  • Overrange Indication: “OL “ is displayed
  • Measurements Rate: 2 per second, nominal
  • Temperature sensor: Type K thermocouple
  • Input Impedance: 7.8MΩ (VDC and VAC)
  • Display: 3-3/4 digits (4000 counts) LCD
  • AC bandwidth: 50/60Hz (AAC and VAC)
  • AC response: True rms (AAC and VAC)
  • Operating Temperature: 14 to 122°F (-10 to 50°C)
  • Storage Temperature: -14 to 140°F (-30 to 60°C)
  • Relative Humidity: 90%(0°C to 30°C); 75%(30°C to 40°C); 45%(40°C to 50°C)
  • Altitude Operating: 3000m; Storage 10,000m
  • Over voltage: Category II 600V
  • Battery: 9V Battery
  • Auto OFF: approx. 15 minutes
  • Dimensions/Weight 8x3.2x1.7” (204x80x43mm)/0.62 lbs. (281g)

REED ST-9800T Specifications

  • Measurement / Range AC
  • Voltage: 400mV, 600V
  • DC Voltage: 4V to 600V
  • AC Current: 400A, 600A
  • DC Current 400A, 600A
  • Resistance 400MΩ
  • Frequency 9.999MHz
  • Temperature -20°C to 760°C (-4°F to 1400°F)
  • Jaw Opening 33mm (1.25")

How to use REED 400A-600A Clamp Multimeter (ST-9800T)

AC/DC Current Measurements with REED ST-9800T
Firstly, look for the "Function" switch and set it to the 600 or 400 A range. Be shure to select the higher range if you don't know the range of your measurements. Secondly, using the AC/DC Reed ST-9800T button select the desired AC or DC mode. Open the jaws and fully enclose the conductor which will be measured. Now the Reed ST-9800T clamp meter will display the measurements on LCD screen.

AC/DC Voltage Measurements
Measuring the voltage with REED 400A-600A Clamp Multimeter (ST-9800T) is very simple and intuitive and it operates in similar steps than AC/DC Current Measurements. Insert the black test lead into the negative COM terminal and the red test lead the positive V terminal. Set the function switch to the V position and using the AC/DC button select now AC or DC mode. Connect the test leads in parallel to the circuit under test. Read the voltage measurement on the LCD display.

Resistance, Capacitance and Continuity Measurements
Insert the black test lead into the negative COM terminal and the red test lead into the positive terminal. Set the function switch to the resistance CAP or continuity position. Use the multifunction button to select resistance. Touch the test probe tips across the circuit or component under test. It is best to disconnect one side of the device under test so the rest of the circuit will not interfere with the resistance reading. For Resistance tests or capacitance, read the resistance on the LCD display. For Continuity tests, if the resistance is < 50Ω, a tone will sound.

Temperature Measurements
To check the temperature, the function switch must set to TEMP position. After inserting the temperature probe into the negative (COM) and the positive jack touch the temperature probe head to the part whose temperature you wish to measure and now read the temperature in the display.

Ordering info

As a canadian distributor of REED Instruments products we stock most of these Clamp On Meters for same day shipping. To enquire on the REED ST-9800T 400A-600A Clamp Multimeter availability and current list price please contact us.


There are yet no reviews for this product.