TD1855 Multi-function Calibrator Summary TD1855 is a
multi-function calibrator, integrates ACDC voltage source,
ACDC current source, DC resistance source, etc. The accuracy
class is 0.05. It's applied to calibrating 3.5 digits
multimeter, voltmeter, ammeter, ohmmeter, power
meter.Features DC voltage output: 20 mV ~ 1100 VDC current
output: 2 μA ~ 22 A(33 A is optional)AC voltage output: 20 mV ~
1100 VAC current output: 200 μA ~ 22 A(33 A is
optional)Sinusoidal wave frequency: 45 Hz ~ 1100 HzSimulated
DC resistance: 10 Ω ~ 220 MΩ 2 MHz square wave frequency
output Phase outputAC/DC power outputRemote adjustment
(optional) Clamp meter
calibration (optional)Transducer calibration(optional) Application
☆ Calibrate ACDC electrical measuring instrumentsDCV output:
20 mV ~ 1100 VDCI output: 2 μA ~ 22 A AACV output: 20 mV ~
1100 V, 45 Hz ~ 1100 HzACI output: 200 μA ~ 22 A
A, 45 Hz ~ 1100 HzRES output: 10 Ω ~ 220
MΩFrequency output: 1 Hz ~ 2 MHzCalibrate digital multimeter,
AC/DC voltmeter, AC/DC ammeter, DC ohmmeter, frequency meter.☆
Calibrate ACDC power metersCalibrate DC power meter,
real power meter, phantom power meter, apparent power
meter, power frequency phase meter and power factor meter. ☆
Calibrate clamp ammeter (optional)Equivalent to 1000AT current
through input 20A current to the 50T Coil, which
is suitable for calibrating DC clamp meters.☆ Calibrate AC/DC
Transducer (optional)DC small-signal measurement. (Vmax: 12 V,
Imax: 24 mA)Calibrate the proportional error of AC/DC
voltage/current transducer. Appearance ☆ FrontSide
PanelItemDescription1LCD touch screen.2Operation panel.3Simulated
DC resistance output terminals.4AC/DC voltage output
terminals.5AC/DC current output terminals.6Handle: used for
carrying instruments.7Input terminals for DC
transducer. ☆ Rear PanelItemDescription1Pulse frequency
output terminals.2Remote box interface.3RS232 communication
interface.4Chassis ground binding post.5AC 220V power
interface.6Cooling vents. Characteristics ☆
Multiple outputdjustment methods"Direct output" mode: the
value output can be set directly by physical key or touch
screen.Calibration of the analog pointer meter usually needs to
test scale by scale, especially "differences between rising
and falling" (the change caused by the rise and fall of the
calibration point). Remote box can realize the coarse and fine
adjustment of current or voltage. Specifications 6.1 DC
Voltage/Current OutputRangeResolutionStability
(±±%/min)Accuracy±(ppm*RD+ppm*RG)[1]Max burden (mA)Ripple
Factor(%)200 mV1 μV0.01300 + 200300
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