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td1870 multi-product calibrator
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overview

model td1870, a wide-range, multi-value and high-precision calibrator with a built-in class 0.01 dc standard source and class 0.02 ac standard source, and also has the functions of ac/dc power output, phase adjustment, resistance simulation and pulse output. applied to calibrate multimeters or other electrical measuring instruments.

this calibrator complies with the following standards:

jjg 124-2005 verification regulation of amperemeters, voltmeters, wattmeters and ohmmeters

● jjf 1587-2016 calibration specification for multimeters

● jjf 1284-2011 calibration specification of calibrators for electrical meters

applications

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features

● electrical parameters output: voltage is up to 1100 v, current is up to 22 a or 33 a at a frequency from 45 hz to 1100 hz.

● resistance simulation: continuously variable range is from 2 ω to 220 mω, pulse output range is from 1 hz to 2 mhz.

 value output mode: standard source and output source modes, easy to calibrate both digital meters and analogue meters.

● value adjustment method: fixed-point, rotary encoder, step and potentiometer (option).

● output switch: the output can be turned on/off arbitrarily by one-touch operation.

● excellent human-computer interaction: large lcd touch screen display, touch and button operation modes, easy for users to measure manually.

● clamp coil (option): match a 50 t clamp coil produces a maximum 1100 at equivalent current to calibrate clamp ammeters.

● transmitter measurement (option): measure the secondary dc signal of the transmitters.

● proprietary software (option): support the calibration of the checked meters by semi-automatic or full-automatic, data management and report export.

electrical specifications

dc voltage output

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output characteristics

● output range of voltage: 2 mv to 1100 v

● resolution: 0.0005 % of range

● display: 7 digits

● ripple coefficient: <0.5 %

● protection: short-circuit protection, overload protection.

dc current output

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output characteristics

● output range of current: 2 μa to 22 a or 33 a

● resolution: 0.0005 % of range

 display: 7 digits

● ripple coefficient: <0.5 %

 protection: open-circuit protection, overload protection.

ac voltage output

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output characteristics

● output range of voltage: 20 mv to 1100 v

● resolution: 0.0005 % of range

● display: 7 digits

● distortion: <0.5 % (<1.0 @ 200 mv range)

● protection: short-circuit protection, overload protection.

ac current output

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output characteristics

● output range of current: 20 μa to 22 a or 33 a

● resolution: 0.0005 % of range

● display: 7 digits

● distortion: <0.5 % (<1.0 @ 200 mv range)

● protection: open-circuit protection, overload protection.

resistance

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output characteristics

● output range of resistance: 2 ω to 220 mω

● resolution: 0.002 % of range

● display: 7 digits

pulse output

● frequency range: 1 hz to 2 mhz

● resolution: 0.001 % of range

● display: 6 digits

● accuracy: ± (0.002 % of reading + 20 μhz)

● ttl level, jitter: <20 ns

power output

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frequency and phase (option)

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dc small signal measurement (option)

 range: 1 v, 10 v, 2 ma and 20 ma

● measuring range: ± (0 to 12 v);± (0 to 24 ma)

● accuracy: ± (0.006 % of reading + 0.004 % of range)

● notes: applied to measure the secondary dc signal of the transmitters. 

general specifications

● line power: 220 v ±22 v, 50 hz ±2 hz

● maximum power consumption: 600 va

● operating environment: +18 °c to +28 °c, 20 % to 85 % r·h, non-condensing

● storage environment: -20 °c to +70 °c, <85 % r·h, non-condensing

● dimensions (w × h × d): 550 mm × 195 mm × 445 mm

● weight: 25 kg

● communication: rs-232 interface

selection guide

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