7005 Voltage Current Loop Calibrator

Product Description:

A precision handheld instrument primarily used for the calibration and simulation of voltage and current loops.

The 7005 is a high accuracy loop calibrator incorporating source and measure capabilities. The compact and lightweight design make it easily portable and ideal for plant operations and field use. Combined with user friendly controls and simple operation make this loop calibrator an excellent model for both process engineers and calibration technicians.

The three operating modes provide a fast and easy solution to process applications; Loop current/voltage source for simulating a transmitter and the loop supply, sink of loop current for simulating a transmitter, and measurement of loop current/voltage for simulating a loop indicator.

Manual step of the output is possible at five calibration points; 0%, 25%, 50%, 75% and 100% of span. Automatic stepping of the output is also available, both up and down with programmable dwell times.

Continuous up/down ramping can also be performed, with user programmable ramp rates and dwell time (top and bottom).

In source mode the range can be user programmed to any value between 0mA and 50mA, or 0V and 21V. For example a low point of 10mA and a high point of 50mA could be set giving a span of 40mA.

Measure mode provides both voltage and current measuring capability with 5 digit resolution. Ranges are 0 to ±5V and ±5 to ±25V, 0 to ±25mA and ±25 to ±125mA. Alternatively the signal can be measured as a % of span for the following ranges; 4 to 20mA, 0 to 20mA, square root 4 to 20mA, or square root 0 to 20mA. For all measurements a Min/Max recording function is available on demand.

An internal NiMH battery powers the unit for typically 9 hours continuous use and an external mains charger is supplied as standard. An automatic power-down feature is incorporated to conserve battery life, which can easily be disabled if not required. The unit is constructed in an impact resistant ABS case and connections are made via 4 off 4mm binding terminal posts.

Product Specification:

VOLTAGE SOURCE

RANGE RESOLUTİON     ACCURACY         OUTPUT CURRENT         OUTPUT RESİSTANCE

0 to 21V             1mV      ±0.01% of setting ±4mV              50mA   < 1Ω

VOLTAGE MEASURE (0 TO ±25V, AUTO-RANGİNG)

RANGE RESOLUTİON     ACCURACY         MEASURE LOAD

0 to 5V 0.1mV  ±0.01% of reading ±0.4mV         10MΩ

5 to 25V             1mV      ±0.01% of reading ±2mV             10MΩ

CURRENT SOURCE

RANGE RESOLUTİON     ACCURACY         OUTPUT VOLTAGE         LOOP RESİSTANCE

0 to 50mA          1μA       ±0.01% of setting ±2μA 22V max            1100Ω @ 20mA max

CURRENT MEASURE (0 TO ±125MA, AUTO-RANGİNG)

RANGE RESOLUTİON     ACCURACY         MEASURE LOAD

0 to 25mA          1μA       ±0.01% of reading ±2μA              24.5Ω

25 to 125mA     10μA     ±0.01% of reading ±20μA            24.5Ω

CURRENT SİNK

RANGE RESOLUTİON     ACCURACY         MİN EXTERNAL DRİVE   MAX EXTERNAL DRİVE

0 to 50mA          1μA       ±0.01% of setting ±2μA 4V         40V

SOURCE MODE

• User programmable ranges – any values between 0 and 50mA or 0 and 21V.

• Fixed ranges are available: 4 to 20mA, 0 to 20mA, sqrt 4 to 20mA, sqrt 0 to 20mA.

• Fine adjustment (inching) is available for precise deviation from the calibration point.

• Manual step output – five calibration points 0%, 25%, 50%, 75%, and 100%

• Automatic step output (up/down) – five cal points with programmable dwell period.

• Ramp output – programmable ramp rate (0 to 20mA/sec or 0 to 20V/sec) programmable dwell period (0 to 1000 seconds)

MEASURE MODE

• Voltage and current measuring capability with 5 digit resolution.

• Ranges: 0 to ±5V and ±5 to ±25V, 0 to ±25mA and ±25 to ±125mA.

• Signal can also be measured as a % of span on ranges: 4 to 20mA, 0 to 20mA, square root 4 to 20mA, square root 0 to 20mA.

• For all measurements a Min/Max recording function is available on demand.

Dimensions       H165 x W90 x D45mm

Weight 0.42kg

Operating Temperature              -10 to 50°C

Storage Temperature    -30 to 70°C

Operating Humidity       0 to 90% non-condensing at 25°C

Power   Internal rechargeable NiMH battery pack. Battery life typically 9 hours. Auto power-down feature can be enabled.

Full recharge from being exhausted will take approximately 16 hours with the unit switched off.

Supplied With   Battery charger, carry case, and user manual

Optional Extras Calibration certificates traceable to NPL and UKAS

Country of Origin           UK

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