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Specification - Altek 334A
ACCURACY:
Quik-Chek 4 & 20 mA ±(0.03% of Setting + 1 LSD)
Milliamp & % Ranges ±(0.05% of Reading + 1 LSD)
Read DC Volts ±(0.05% of Span + 1 LSD)
WARM UP TIME: 10 seconds to specified accuracy, 2 minutes to maximum accuracy
TEMPERATURE EFFECT:
Milliamp Ranges: ±0.008% of Reading/°C
Read DC Volts: ±0.012% of Span/°C
BATTERIES: Three “9V”, (1604) batteries (Alkaline supplied and recommended)
BATTERY LIFE:
SOURCE & POWER TRANSMITTER: Nominal 33 hours at 12 mA, 20 hours at 20 mA with 250 Ohm load
READ mA, DC V & 2-WIRE SIMULATE: Nominal 100 hours
LOW BATTERY INDICATION: “BAT” indication will first appear on the display when approximately 4 hours remain to
source 12 mA into 250 Ohms. This is typical use for a full shift.
OVERVOLTAGE PROTECTION: Protected to 135V AC/DC for 30 seconds without fuses
OPERATING TEMPERATURE RANGE: -5 to +140 °F (-20 to +60°C)
STORAGE TEMPERATURE RANGE: -22 to +160°F (-30 to +70°C)
RELATIVE HUMIDITY: 10 to 90%, non-condensing for 24 hours from 0 to 35°C
OVERALL SIZE: 121.9 x 66.0 x 35.8 mm (4.8 x 2.6 x 1.41 inches)
WEIGHT: 0.22 kg (7.8 oz)
MILLIAMP SOURCE
RANGES:
0.00 to 24.00 mA; -25.0 to 125.0 % of 4 to 20 mA
ACCURACY:
Quik-Chek 4mA ±(0.03% of 4mA + 0.01 mA) = 0.011mA
Quik-Chek 20mA ±(0.03% of 20mA + 0.01 mA) = 0.016mA
0 to 24mA ±(0.05% of Reading + 1 LSD)
TYPICAL DRIVE CAPABILITY: 1200 Ohms @ 20.00 mA with fresh batteries, 800 Ohms @ 20.00 mA with low batteries
COMPLIANCE: nominal 27VDC @ 20 mA with fresh batteries
POWER & MEASURE 2-WIRE TRANSMITTERS
RANGES & ACCURACY: Same as for MILLIAMP SOURCE
OUTPUT CURRENT: up to 24.00 mA
TYPICAL DRIVE CAPABILITY:1200 Ohms @ 20.00 mA with fresh batteries, 800 Ohms @ 20.00 mA with low batteries
COMPLIANCE: nominal 27VDC @ 20 mA with fresh batteries
2-WIRE TRANSMITTER SIMULATOR
RANGES & ACCURACY: Same as for MILLIAMP SOURCE
LOOP VOLTAGE LIMITS: Minimum, 2 VDC; Maximum 100 VDC
OVERLOAD PROTECTION: Current limited to 25 mA nominal
MILLIAMP READ
RANGES: 0.00 to 52.00 mA; -25.0 to 300.0 % of 4 to 20 mA
ACCURACY: Same as for MILLIAMP SOURCE
VOLTAGE BURDEN: 0.9V at 4 mA, 1.2V at 20 mA, 1.9V at 50 mA excitation current
READ DC VOLTS
RANGE:-99.99 to +99.99V DC
INPUT IMPEDANCE: >2 Meg Ohms