Crompton Instruments 361, 362, 363, 364 Data Sheet

Features

•

Measurement and indication of AC
amps, volts, frequency and DC signals

•

Surface or window mounting

•

Rear zero adjuster on moving
coil meters

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High torque pivot and jewel
movement

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True RMS measurement meters

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AC and DC inputs

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Up to 40A DC direct connected

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Up to 50A AC direct connected

Benefits

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AC moving iron and moving
coil mechanisms

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Reduced inventory

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4 ANSI standard case sizes

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Detachable lower fascia plate

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Easy to modify for distributors

•

Through holes for back of
panel mounting

Applications

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Marine panels

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Switchgear

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Distribution systems

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Control panels

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Embedded generation

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Energy management

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Building management

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Utility power monitoring

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Process control

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Motor monitoring

Compliant with

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ANSI C39.1 1981

•

IEC 51

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UL3111-1

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EMC

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LVD

•

UL and CUL file no: E236986

Challenger Analogue Panel Meters

The Challenger range of analogue panel meters offers accurate
measurement and indication of most electrical and electronic
parameters in industry standard 11⁄2", 21⁄2", 31⁄2" and 41⁄2" case sizes.
This innovative design features a detachable lower fascia plate,
which allows the flexibility of either surface or window mounting.
The fascia is simply unclipped to achieve the completely flush panel

ppearance of rear of panel window mounting.

a

The range offers AC and DC ammeters, voltmeters and frequency
meters utilising a high torque pivot and jewel movement. AC moving
coil rectified meters provide 1.5% accuracy of the full scale value
and feature a rear zero adjuster screw for tamperproof installation.
AC moving iron meters also provide 1.5% high accuracy and true
RMS measurement.

Operation

The Challenger analogue panel meters utilise a traditional pivot and jewel
movement, incorporating specially hardened steel pivots and a spring loaded jewel.
This robust mechanism is ideally suited for all applications, including the most
demanding conditions.

Moving Coil Meters

These meters offer a centre cored, self-shielding moving coil movement using
pivots, hairsprings and sprung jewels. Variations in movement are limited by design.
All DC voltmeters are 1000 ohms per Volt, moving coil rectified products run at
900 ohms per Volt. Millivolt meters use a 5 milliamps/50mV movement.

Moving Iron Meters

This clapper type repulsion design utilises a pivot, hairspring and jewel movement.
The bottom jewel is oil filled to provide damping while the top is sprung for
resilience. All voltmeters are manufactured with internal voltage dropper resistors.

Frequency Meters

Frequency meters utilise a 1mA/35 ohm DC moving coil movement driven by an
EMC hard frequency conversion circuit.

Dials, Pointers and Scales

Standard dials are matt white with black printed scales and a tubular knife-edge
black matt pointer. The 90° scales are balanced within 1% of scale length and
feature a highly repeatable flattened arc scale shape, ensuring consistently
accurate measurement readings. Dials are interchangeable between the Challenger
meters for inputs within the published specifications of the meter. Options for non
standard customised dials are available upon request.

Current Transformers and Shunts

Crompton Instruments, a Business Unit of TE Connectivity Ltd, offers a
comprehensive range of current transformers and shunts, for driving the
Challenger panel meters for the safe and simple measurement of AC and
DC currents.

Our extensive range of current transformers provides accurate measurement of AC
current and ratio matching to a consistent 5 or 1 amp secondary current,
proportional to the primary current.

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Our range of shunts ensures a DC millivolt signal exactly proportional to the
system current for driving ammeters, providing accurate measurement of DC
current up to 12000A, with secondary inputs of, 50, 60, 75 or 100mV DC to match
the Challenger input.

pecifications

S

Accuracy

DC ammeters and voltmeters: 1.5% 0-100% of full scale deflection
AC ammeters and voltmeters: Moving iron: 1.5% 10-100% of full scale deflection

Frequency meters: 0.5% of end scale value

nput ratings

I

DC moving coil ammeters: 50μA - 40A DC. (Model 361: 10A max)
DC moving coil voltmeters: 50mV - 600V DC

DC moving coil centre +/-50mA to +/-40A DC. (Model 361: 10A max)
zero ammeters:

DC moving coil centre +/-50mV to +/-600V DC. Standard 1k ohm/volt
zero voltmeter:

DC moving coil suppressed 4/20mA DC
zero ammeters:

DC moving coil suppressed 1/5, 8/16, 16/32 or 12/24V DC
zero voltmeters:

AC moving coil ammeters: 100μA - 750mA AC
AC moving coil voltmeters: 20 - 600V AC. Standard 900 ohms/volt
AC moving iron ammeters: 1 - 50A AC (Model 361: non applicable)
AC moving iron voltmeters: 3 - 600V AC (Model 361: non applicable)
Frequency: 100/130V, 200/250V, 360/440V, 50Hz, 60Hz or

Burden: Ammeter 0.5VA Voltmeter: 4.5VA Frequency: 4VA
Overload: 1.2 continuous x 10 for 0.5 seconds

Moving coil: 1.5% 10-100% of full scale deflection

400Hz (Model 361: non applicable)

Enclosure

Movement: High torque pivot and jewel moving coil and

Scale balance: Within 1% of scale length
Relative humidity: 25% - 80% nominal range of use
Operating temperature: 0°C to 40°C (-32°F to 104°F)
Storage temperature: -20°C +55°C (-4°F to 131°F)
Case and lower mask: Black matt case UL94V. Polycarbonate cover
Window: Shatterproof polycarbonate
Surface mounting: 4 corner studs
Rear of panel mounting: 2 through hole mounts (Model 361: facility

moving iron

pending)

Compliant with

UL and CUL: 61010B-1 File no: E236986
Performance: ANSI C39.1 1981 and IEC 51
Scaling: ANSI C39.1 1981
Safety: IEC61010-1 (LVD) and BSEN61326:1998 (EMC)
Vibration: ANSI C39.1 1981 cl. 5.13

Model 361 (11⁄2")

Model 362 (21⁄2")

Product Codes

Input Model 361 Model 362 Model 363 Model 364

cat. no. cat. no. cat. no. cat. no.

DC moving coil amps 361-01A 362-01A 363-01A 364-01A
DC moving coil volts 361-01V 362-01V 363-01V 364-01V
DC moving coil centre 361-01C 362-01C 363-01C 364-01C

zero amps
DC moving coil centre 361-01N 362-01N 363-01N 364-01N

zero volts
DC moving coil suppressed 361-01R 362-01R 363-01R 364-01R

zero amps
DC moving coil suppressed 361-01S 362-01S 363-01S 364-01S

zero volts
AC moving coil amps 361-01B 362-01B 363-01B 364-01B
AC moving coil volts 361-01W 362-01W 363-01W 364-01W
AC moving iron amps N/A 362-02A 363-02A 364-02A
AC moving iron volts N/A 362-02V 363-02V 364-02V
Frequency N/A 362-41S 363-41S 364-41S

Please specify current, voltage, frequency and required options at time of ordering.

Model 363 (31⁄2")

Model 364 (41⁄2")

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