• Measure/Source:
  – Current Range     0 to 22mA
  – Current Resolution     0.001mA
  – Current Accuracy     ±(0.03% f.s. + 2 dgt.)
  – Voltage Range     0 to 20V
  – Voltage Resolution     0.001V
  – Voltage Accuracy     ±(0.03% f.s. + 2 dgt.)
  – Loop Power Supply     24VDC
  – Loop Power Accuracy     ±10%

• General Specifications:
  – Power Supply     Single 9V battery
  – Dimensions     193 x 96 x 47mm
  – Weight     450g

REED R8801 Auto Power Off The meter will automatically turn off after 5 minutes of inactivity. Press the Power and Voltage button at the same time to turn off the Auto Power Off function.

REED R8801 Battery Replacement To view the current battery voltage press the Power and Voltage buttons. The voltage of the battery will appear on the LCD. If the voltage is below 5.6V the low battery icon will appear indicating you will need to change the batteries. 1. Turn off the meter and unplug any test leads. 2. Unscrew and remove the back cover. 3. Replace the battery and put the back cover back on. Be sure it is secured properly before turning the meter back on.

REED R8801 Software 1. While the meter is on, connect the USB cable to the port on the meter and a computer. 2. Insert and install the included software on the computer. 3. When connected to a computer the buttons on the meter will lock, indicated on the LCD screen.

The post Reed R8801 Voltage/Current Calibrator appeared first on Obiat Electronics.

• SOURCE & MEASUREMENT
  Current Range: 0 to 19.99mA; 0 to 24mA
  Resolution: 0.01mA; 0.1mA
  Accuracy: ±(0.25% f.s. + 1 dgt.); ±(0.5% f.s. + 1 dgt.)
• DC mV SOURCE
  Voltage Range: -199.9mV to +199.9mV
  Resolution: 0.1mV
• Accuracy: ±(0.25% f.s. + 1 dgt.)
  GENERAL
  Display: LCD, max. 1999 counts
  Power Supply: Single 9V battery
  Dimensions: 150 x 70 x 40mm
  Weight: 232 g
  Sampling Time: Approx. 0.4 second
  Operating Temperature: 0 to 50°C (32 to 122°F)
  Operating Humidity: < 70% RH

REED R8800 Battery Replacement When the batteries become exhausted or drop below the operating voltage, “BAT” will appear in the left-hand side of the LCD display. 1. Disconnect the test leads from the meter. 2. Open the battery door by loosening the screw using a Phillips head screwdriver. 3. Insert the battery into battery holder, observing the correct polarity. 4. Put the battery door back in place. Secure with the two screws.

The post Reed R8800 Current-Voltage Loop Calibrator appeared first on Obiat Electronics.

Current output with Reed VC05
For current output function connect one end of the test leads to the +mA -output jack of the calibrator (I/O terminals) and connect the other end with the input of the user’s instrument. Switch the calibrator into the output mode by pressing the key “OUTPUT/IN/SW” and select the mA or % scale. Now your instrument are ready for current output. Using the current output function, with Reed VC05 another features such 25% Step Current Output, Auto-ramp, Simulating Transmitter Output(XMT) or Current Output Set For Zero Point & Full Scale are also easy to use and set.

During the operation of the current output, try your best to use the external 24VDC power supply in a mode of connecting a transmitter, thus being able to prolong the working life of the battery.

Calibrator Measurement

For To measure the DC Current with Reed Loop Calibrator VC05 starts with connect the output of the user’s instrument to the calibrator, using the test leads. Using the “OUTPUT/IN?SW button, switch the instrument into INPUT mode and select the input to be set in mA or %. The calibrator starts measurements, and then the symbol ‘ON’ appears in the display followed by the result of measurements. Measuring DC Voltage will be available after inserting the test leads into the V input jack of the calibrator and select the V function.

Providing 24V Power Supply For Measuring Loop Current
Insert the test lead into the +LOOP & mA input jacks of the calibrator. When the key [OUTPUT/ IN/SW] is pressed, the symbol ‘INPUT’ appears in the display. It denotes that the calibrator is in an input state. After choosing the scale ,mA or mA% (0% denotes 4mA and the value of 100% denotes 20mA), the calibrator starts measurements, and then the symbol ‘ON’ appears in the display.

Measuring Switching contact Status
Insert one end of the test lead into the switching contact measuring jack of the calibrator and connect the other end to the switching contact of the user’s instrument. When the key〔OUTPUT / IN/ SW〕is pressed, the display indicates the symbol ‘INPUT’ followed by the word ‘CLOSE’ or ‘OPEN’ according to the measured switching contact status. When the switching resistance exceeds 15KΩ, the contact is regarded as an off state.

REED VC05 Specifications:

measurement function
DC Voltage Range: 28V
Output Range: -0.200 to 28.000V
Resolution: 1mV
Accuracy: ±0.02% reading ± 2mV
DC Current Range: 20mA
Output Range: -1.000 to 22.000mA
Resolution: 0.001mA
Accuracy: ±0.02% reading + 4μA
Loop Current Range: 20mA
Output Range: 0.000 to 22.000mA
Resolution: 0.001mA
Accuracy: ±0.02% reading + 4μA
OUTPUT function
Current Range: 20mA
Output Range: 0.000 to 22.000mA
Resolution: 0.001mA
Accuracy: ±0.05% setting + 4μA
Analog Transducer: -20mA
Output Range: 0.000 to -22.000mA
Resolution: 0.001mA
Accuracy: ±0.05% setting + 4μA
Loop Power: 24V
Accuracy: ±10%
Power Supply: S ingle 9V alkaline battery
Battery Life: A pprox. 20 hours
Dimensions: 200 x 100 x 40mm w/ holster

The post Reed VC-05 Loop Calibrator appeared first on Obiat Electronics.

Power-on/off of Calibrator
To turn on the power supply of Reed VC04 voltage and current simulator by pressing the power key. Now the instrument starts a quick self-diagnosis internally test and the full screen is in display. After this short period of time, appropriate operation should be carried out. With the Automatic power-off function active, if there is no operation of the calibrator within a period of 10 minutes after power-on it will cut off the power supply automatically. You can deactivate this function any time.

DC voltage output
Before starts voltage output, you need to connect one end of the test lead into the VC04’s output jack and insert the other end to the input of your instrument that will be tested. The instrument starts a quick test and if all will be fine, will display “OUTPUT” symbol on its LCD display. Now the calibrator is in an output state. Using the arrow keys you can choose the set digits for output and change the value of the set digits. Press the key〔ON/OFF〕to turn on or turn off the output, and the display indicates the symbol ‘ON’ or ‘OFF’.

The appropriate output terminal of the calibrator produces the DC voltage and current set by the user or simulating a transmitter. During the operation, do not apply voltage to the output terminal. If any improper voltage is applied to the output terminal, it will cause damage to the internal circuit.

DC current output
Insert one end of the test lead into the +mA- output jack of the calibrator and connect the other end to the input of the user’s instrument. Press the key〔V/mA〕to select the mA function and display the unit ‘mA’.Press the key〔mA/ %〕to select the output to be set in mA or % and display the unit ‘mA%’, in which 0% is 4mA and 100% is 20mA.Using the arrow keys you can choose the set digits for output and change the value of the set digits. Press the key 〔ON/OFF〕 to turn on/off the output followed by displaying the symbol ‘ON’ or ‘OFF’.

25% of step current output
After you have connected the test leads in the same way as any DC current output tests, select the mA function by pressing the (V/mA) key and choose ‘mA” or “mA%” scale. Using the Reed VC04’s arrows keys change the output value of 25% in which 0% denotes 4mA and 100% denotes 20mA. Now press the key〔mA 25% again to exit the step current output. You can turn on or off the output by using the (ON/OFF) button.

Simulating Transmitter output (absorption current)
Connect one end of the test lead into the XMT output jack of the calibrator and the other end to the input of the user’s instrument and the power supply as shown in the following diagram. The key operation is the same as that of DC current output in subsection 5.2.
Please note that the range of power supply is from 5 to 25VDC. During the operation at the current output, try your best to use an external 24VDC power source in a mode of connection with a transmitter, thus being able to prolong the battery life.

REED VC04 Specifications

• DC Voltage Range: 10V
• Output Range: 0.00 to 11.000V
• Resolution: 1mV
• Accuracy: ±0.05% setting
• DC Current Range: 20mA
• Output Range: 0.000 to 22.000mA
• Resolution: 0.001mA
• Accuracy: ±0.05% setting + 4μA
• Analog Transducer: -20mA
• Output Range: 0.000 to -22.000mA
• Resolution: 0.001mA
• Accuracy: ±0.05% setting + 4μA
• Loop Power: 24V
• Accuracy: ±10%
• Power Supply: Single 9V alkaline battery
• Battery Life: Approx. 12 hours
• Dimensions: 200 x 100 x 40mm with holster
• Weight: 550g with holster

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