LFE/api Ruggedized-Sealed Series Models 255-355-455 -7

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Distributed By: Instrument Meter Specialties
Meters & Instruments + Service Since 1946
Phones:1- 800-926-3837 1-818-841-2417 FAX: 1-818-841-2379
We accept: Visa - Mastercard -American Express

Ruggedized-Sealed Series Models 235 (2˝")355(3˝")455(4˝")

Gasket-sealed metal cases
Great in severe environments
Taut band suspension standard for sensitive ranges
Standard indication accuracy of ±3% for AC
Wide selection of ranges
Customized scales available
Mirrored scales available on Model 455
Special pointers and other options available

Ruggedized-Sealed Panel Meters are designed and built to function in severe environments. The meter movement is securely anchored in a gasket-sealed metal case to provide protection against severe shock, salt spray, fungus, and corrosive chemicals.The meter conforms to the gasket sealing requirements of Mil-M10204-C specifications. The rugged-sealed panel meters are available in three sizes as shown above.These panel meters are identical in appearance and in dimensions with the other LFE/api ruggedized-sealed instruments (pyrometers and meter relays) . This interchangeability facilitates panel designing and functional upgrading.

The Ruggedized-Sealed Panel Meters use d'Arsonval meter mechanisms. The meters are furnished with taut band suspensions as standard in the sensitive ranges from 0-5µA to 100µA and 0-5mV to 0-25mV. Taut band suspensions may be specified for other ranges as required. The higher ranges are normally furnished as povot-and-jewel mechanisms. Taut bands provide the advantage of friction-free measurements for the ultimate in accuracy. Taut band also allow the meter to respond to extremely small signals, extending the application of ruggedized-sealed panel meters to areas of sensitivity not previous possible. Additionally, taut band meters offer increased resistance to shock and vibrations over older, pivot-and-jewel designs. Because severe vibration can cause momentary erratic readings on taut band meters, Triplett can provide specially damped meters which are free of this problem, but have relatively slow response time. LFE/api by Triplett Ruggedized-Sealed Panel Meters have a one year warranty backed by IMS - Instrument Meter Specialities .

Round Meter Model 1235 Specifications
Specifications (Taut Band)		*DC Ranges*		*AC Ranges (Rectifier Type)*		*Pyrometer*
Specifications (Taut Band)		*Current*	*Voltage*	*Current*	*Voltage*	*Pyrometer*
Accuracy		±2%	±2%	±3%	±3%	±2%
Tracking		Optional	Optional	Optional	Optional	N/A
Balance		±1%	±1%	±1%	±1%	±1%
Repeatability	Taut Band Mechanism	< Ľ%	< Ľ%	< Ľ%	< Ľ%	< Ľ%
Repeatability	Pivot & Jewel	2%	2%	2%	2%	N/A
Resistance Tolerance		±20%	±5%	-----	< 10V ±20% > 10V ±5%	N/A
Overload Capacity	1 Second	1000%	< 100V 1000% > 100V 200%	150%	150%	N/A
Overload Capacity	Continuous	150%	120%	150%	120%	N/A
Calibration Frequency		--------	--------	60 Hz	60 Hz	N/A
Overshoot (maximum)		20%	20%	20%	20%	N/A
Response Time (maximum)	Sensitivity>50µa	1.5 sec	1.5 sec	1.5 sec	1.5 sec	N/A
Response Time (maximum)	Sensitivity<50µa	3 sec	3 sec	3 sec	3 sec	N/A

Effects of shock, vibration, humidity and temperaure are equal to or better than ANSI C39.1-1981Safety (dielectric test , leakage and other hazards)
instruments are equal to or better than ANSI C39.5-1974. The above tolerance limits apply to the standard ranges listed in this bulletin. Special
instrumants may vary from these limits.Rated circuit to ground voltage = 800 Vrms (1100 Peak)

DC Ranges		Process Ranges		AC Ranges
DC Microamperes	5 to 1000	DC Millamperes	1-5, 4-20, 10-50	AC Microamperes	100 to 1000
DC Milliamperes	1 to 1000	DC Volts	1-5, 0-10	AC Milliamperes	1 to 1000
DC Amperes	1 to 9	For Thermocouple Pyrometers Contact IMS		AC Amperes	1 to 50
DC Millivolts	5 to1000			AC Millivolts	250 & 500
DC Volts	1 to 500			AC Volts	1 to 500

*Rugged-Sealed Meter Dimensions*
Model	Flange Diameter	Barrel Diameter	Depth	Phones: 800-926-3837....818-841-2417.......FAX 818-841-2379 We accept: Visa - MasterCard -American Express
255 (2 ˝")	2.80	2.155	1.97
355 (3 ˝")	3.58	2.62	2.16
455( 4 ˝")	4.56	3.9	2.05

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