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1604 autoranging bench multimeter

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The 1604 is a low-cost auto/manual ranging bench-top DMM with a large and bright LED display. It offers 43/4 digit (40,000 count) scale length, true rms AC measurements, a basic accuracy of 0.08% and a resolution of 10µV, 10mΩ and 0.1µA.

Robustly constructed bench-top instrument
Multi-position tilt stand ensures display is always readable
Incorporates smart functions such as relative measurement, min./max. storage, T-Hold, etc.
Excellent AC bandwidth
Frequency measurement function
Isolated RS-232 interface permits remote control and data logging using optional control/logging software, please see below

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Exc. VatInc. Vat

Unit of Sale

Description

Order Code

10+

Qty

1604 AUTORANGING BENCH DMM (RE)

85-1220

171.00

169.00

165.00

85-1220 is available to credit account holders only

CTRL/LOGGING SOFTWARE FOR 1604 (RE)

85-1222

43.00

42.00

40.00

85-1222 is available to credit account holders only

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Technical Specification

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DC Voltage
Range	Accuracy	Resolution	Notes
400mV	0.08% ± 4 dig.	10µV	Max. Input 265V DC/AC rms
4V	0.08% ± 4 dig.	100µV	Input impedance 10MΩ nominal
40V	0.08% ± 4 dig.	1mV	Max. input 1kV DC or AC pk
400V	0.08% ± 4 dig.	10mV	NMR: >60dB @ 50/60Hz
1000V	0.09% ± 4 dig	100mV	CMR: >90dB @ DC/50Hz/60Hz
AC Voltage (True RMS, 4000 count scale length)
Range		Accuracy		Resolution
	45Hz - 400Hz	400Hz - 5kHz	5kHz - 20kHz
400mV		1% ± 4 dig.	3% ± 4 dig.	100µV
4V				1mV
40V	0.5% ± 4 dig.	2% ± 4 dig.	5% ± 4 dig.	10mV
400V		3% ± 4 dig.		100mV
750V	1% ± 4 dig.			1V
Accuracies apply for readings between 10% and 100% of full scale. Additional error at crest factor = 3 is typically 1%. Input impedance = 10MΩ nominal. Max. input = 750V rms, 1kV pk. (265V rms on 400mV range). 1kΩ unbalanced CMR = >60dB at DC or 50Hz (60Hz rejection available as factory option.) Resistance
Range	Accuracy	Resolution	Notes
400Ω	0.15% ± 6 dig.	0.1µA	* 400Ω specification applies after null
4kΩ	0.1% ± 4 dig.	100mΩ	Max. input 265V DC or AC rms on any range.
40kΩ	0.1% ± 4 dig.	1Ω	Max. open circuit voltage 4V
400kΩ	0.15% ± 4 dig.	10Ω
4MΩ	0.3% ± 6 dig.	100Ω	40MΩ accuracy applies up to 20MΩ
			thereafter add 1%
40MΩ	1.0% ± 10 dig.	1kΩ
DC current
Range	Accuracy	Resolution	Notes
4mA	0.1% ± 4 dig.	0.1µA	Max. input 1A (Fused)
400mA	0.1% ± 4 dig.	10µA	Voltage burden <500mV
10A (up to 1A)	0.3% ± 4 dig.	1mA
10A (up to 5A)	0.1% ± 4 dig.	1mA	Max. input 10A (Fused)
10A (up to 10A)	3.0% ± 10 dig.	1mA	Voltage burden <500mV
AC current (True RMS, 4000 count scale length)
Range	Accuracy	Resolution	Notes
1mA	0.5% ± 4 dig.	1µA	Max. input 1A (Fused)
100mA	0.5% ± 4 dig.	100µA	Voltage burden <500mV
10A (up to 1A)	0.8% ± 4 dig.	10mA
10A (up to 5A)	1.5% ± 4 dig.	10mA	Max. input 10A (Fused)
10A (up to 10A)	3.0% ± 4 dig.	10mA	Voltage burden <500mV
Accuracies apply over 45Hz to 10kHz for readings between 10% and 100% of range. Additional error at crest factor = 3 is typically 1%.
Frequency
Range	Accuracy	Resolution	Notes
4kHz	0.01% ± 1 dig.	0.1Hz	Sensitivity selected by AC range
40kHz	0.01% ± 1 dig.	1Hz	setting
Sensitivity better than 40mV (400mV range), better than 10% of range (other Vac & lac ranges).
All accuracies apply for 1 year, 198C to 258C. Temperature coefficient outside these limits is <0.1 x quoted range accuracy per 8C
Further Functions
Continuity
Selects 4kΩ range and sounds audible tone for impedance <10Ω. Max. input 265V DC or AC rms.
Diode Test
Displays junction voltages up to 3V at a test current of 1mA at 1V. Max. open circuit voltage approximately 4V. Max.input 265V DC or AC rms
Null (Relative):	Stores current reading and subtracts it from future readings
Hold:	Reading is frozen until released
T-Hold	Reading is frozen when it becomes stable
Min/Max:	Minimum and maximum readings are stored
Display and Range Control
0.56in (14mm) LED display. Annunciators for all ranges, functions and ‘smart’ modes. Scale Length 43/4 digits (±40,000 counts) except ac ranges (4,000 counts). Reading rate 2.5 per second. Overrange shows OFL on display. Each measurement function can use automatic or up/down manual ranging.
RS-232 interface
Opto-isolated bi-directional RS-232 interface. 9600 baud.
General
Power:	230V or 155V AC nominal 50/60Hz, adjustable internally: operating range ±14% of nominal; 3VA max.; Installation category II
Size:	260(W) x 88(H) x 235(D)mm, exel. handle/feet
Weight:	2.0kg
Operating range:	+5 to 40°C, 20-80% RH
Storage range	-40 to +70°C
Safety:	Complies with EN61010-1
EMC:	Complies with EN55081-1 and EN50082-1

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