Yokogawa Panel Meters
New Big Look, DC Milliammeters Zero-Center

Dust Resistant Construction
Clean, Readable Case Design Provides Extra Safety
Gasket Sealing Design Establishes A New Industry Standard
Taut Band, Pivot and Jewel Options
High-Sensitivity DC Voltmeters
Expanded-Scale Voltmeters
Rectifier-Type Meters
Conduit Mounting Case

Yokogawa 250 New Big Look
Panel Meters Shown

Product Information
Big Look Catalog	101 KB
Ordering Guide
Ordering Info
PDF Help

New Yokogawa Big Look Panel Meters feature extra-wide scales, big bold numerals above the scale and divisions for unobstructed reading. Tapered needle-sharp pointers and shadow-free acrylic covers help to pinpoint values. Available in taut band and pivot and jewel types. Gasket sealer gives New Big Look dust and moisture resistant design. (Except 1 1⁄2").

Dust Resistant Construction.
YOKOGAWA Big Look panel meters, except 1-1/2”, feature gasketed construction to seal out dust and other air-suspended damaging particles. Application is ideal for adverse environments. Special dust resistant features are included on all YOKOGAWA New Big Look meters (except 1-1/2”). For more severe applications, to meet UL-1437 or IEC 144 requirements, other models are also available upon request.

Clean, Readable Case Design Provides Extra Safety:
YOKOGAWA’s brand New Big Look and Horizon Line panel meters are designed to provide attractive styling, quick, sure readability for any application, and a built in safety feature to help you meet national safety requirements. If you must remove the acrylic cover, you have to remove the instrument itself from the panel in order to reach the special safety screws holding on the cover. Removing the meter prevents shock hazard. This safety feature is standard on all New Big Look and Horizon Line meters.

Gasket Sealing Design Establishes A New Industry Standard:
Dust resistant construction is now a standard feature of all New Big Look panel meters 2-1/2” - 4-1/2” only. YOKOGAWA's unique gasket sealing design eliminates the need for a crimped bezel, providing for quick modification and scale changes while maintaining the integrity of the meters.

Taut Band:
Taut band is a means of suspending the moving mechanism between two ribbons of metal, obviating the need for pivots, jewels and control springs found in conventional mechanisms. The absence of friction resulting from this permits greater sensitivities and provides more rugged meters. Common failures of conventional meters subjected to shock testing are cracked jewels and/or blunted pivots. Taut band, without pivot and jewels, consequently, will withstand shock in excess of that specified for pivot and jewel meters. For example, ANSI Specifications for panel meters require 50G shock. Taut-band meters will withstand 100G shock.

Pivot and Jewel:
In this design the coil and pointer are supported by polished steel pivots at each end which fit into jewel bearings. Pivot and jewel meters are recommended for high vibration environments because of the mechanism’s inherent stability and strength. Accuracy and repeatability are almost equal to the taut-band’s, and good performance from the pivot and jewel construction is the reason for its long popularity. Don’t specify pivot and jewel meters for applications that involve high shock, but do take advantage of this meter’s ability to withstand vibration.

High-Sensitivity DC Voltmeters:
Standard DC voltmeter sensitivity is 1000 ohms/volt. Expressed differently, 1000 ohms/volt sensitivity means that the meter draws approximately one milliamp full-scale current.

Occasionally lower current drains are necessary, hence higher sensitivities may be required. The table below compares available sensitivities, maximum self-contained voltages, and approximate full-scale currents. The voltage range could be extended by using external resistors.

Conduit Mounting Case — 2-1/2-inch New Big Look Meter:
Available only for 2-1/2-inch Type 250 panel meters, for indoor or outdoor use, the conduit mounted case provides protection to the meter under severe environmental conditions. The conduit case is both sealed and weatherproof and is pre-drilled, ready for mounting of separately ordered panel meters. Assembly of meter into case is done by purchaser. (Drawing No. 2579K10700.)

New Big Look - General Specifications
Accuracy	AC/DC Iron-Vane	±2% of full-scale
	Expanded Voltmeters	±0.5% of full-scale
Overload	Voltmeters (AC/DC)	50% Momentary
		20% Sustained
	Ammeters (AC/DC)	Momentary	10 times the rated current for 10 consecutive intervals of .5 second with a 1 minute interval between successive applications
		Sustained	20% for six hours
Scale Data		90 degree rotation
Scale Length		1 1/2"	1.40"
		2 1/2"	2.06"
		3 1/2"	2.88"
		4 1/2"	3.93"
Insulation Level	1 1/2"	1500 Vrms Hi-pot
	All Meters (other then 1 1/2")	2600Vrms Hi-pot
Response Time and Overshoot		3 seconds (max.) for 2 1⁄2", 3 1⁄2", 4 1⁄2" size for microammeters; 2 seconds (max.) for all other DC ratings, and 2.5 seconds (max) for AC ratings. Maximum of 40% overshoot.
Additional Notes		Pivot & jewel instruments are not available in 1 1⁄2" size. Meter with flame retardant window and base in 2 1⁄2", 3 1⁄2" and 4 1⁄2" sizes are available that conform to UL1437. Include /CUL or /UL at the end of the catalog number or contact factory. Sealed meters for outdoor use can be ordered in 2 1⁄2", 3 1⁄2" and 4 1⁄2" sizes by including /IEC at the end of the catalog number, or contact factory. For ratings and scales not listed contact the factory.

Ordering Guide:
Step 1
Specifications	Taut Band	Pivot and Jewel
1 1/2"	250 101	-
2 1/2"	250 201	254 201
3 1/2"	250 301	254 301
4 1/2"	250 401	254 401

Step 2
Scale & Rating	1-0-1 mA	5-0-5 mA		10-0-10 mA		20-0-20 mA	25-0-25 mA
Code	FAFA	FXFX		GZGZ		HFHF	HJHJ
	30-0-30 mA	50-0-50 mA		100-0-100 mA		150-0-150 mA	200-0-200 mA
	HMHM	HYHY		JRJR		JXJX	KAKA
	250-0-250 mA		300-0-300 mA		500-0-500 mA
	KDKD		KGKG		KMKM

Example Product
	Scale Size and Type	Scale & Rating
New Big look meter, 3 1/2" Pivot and Jewel, 200-00-20 mA	254 201	KAKA
	250 101 CFCF

Ordering Information
Model	Description	Price
New Big Look Panel Meters	Yokogawa New Big Look DC Milliammeter Meter, Zero - Center	Please Call

Yokogawa Panel Meters New Big Look, DC Milliammeters Zero-Center

Yokogawa Panel Meters
New Big Look, DC Milliammeters Zero-Center